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s \\fIChez Scheme\\fP",".ds p \\fIPetite Chez Scheme\\fP",".if t .ds c caf\\o'\\'e'",".if n .ds c cafe",".ds ]W ",".TH SCHEME 1 \"Chez Scheme Version 9.5.3 September 2019\"",".SH NAME","\\fIChez Scheme\\fP",".br","\\fIPetite Chez Scheme\\fP",".SH SYNOPSIS","\\fB{InstallSchemeName}\\fP [ \\fIoptions\\fP ] \\fIfile\\fP ...",".br","\\fB{InstallPetiteName}\\fP [ \\fIoptions\\fP ] \\fIfile\\fP ...",".SH DESCRIPTION","\\*s is a programming language, based on R6RS Scheme, and a","high-performance implementation of that language.","\\*s compiles source expressions \\fIincrementally\\fP to machine code,","providing the speed of compiled code in an interactive system.",".LP","\\*p is an interpreted version of \\*s that may be","used as a run-time environment for \\*s applications or as a","stand-alone Scheme system.","With the exception that the compiler is not present, \\*p is 100%","compatible with \\*s.","Interpreted code is fast in \\*p, but generally not nearly as fast as","compiled code.","Debugging and profiling support is also limited for interpreted","code.",".LP","Scheme is normally used interactively. The system prompts","the user with a right angle bracket (\\*(lq\u003e\\*(rq) at the beginning of each","input line. Any Scheme expression may be entered. The system evaluates","the expression and prints the result. After printing","the result, the system prompts again for more input.","The user can exit the system by typing ","Control-D or by using the procedure \\fIexit\\fP.",".SH COMMAND-LINE OPTIONS",".LP","\\*s recognizes the following command line options:",".TP 1i",".B -q, --quiet","Suppress greeting and prompts.",".TP",".B --script \\fIfile\\fP","Run \\fIfile\\fP as a shell script.",".TP",".B --program \\fIfile\\fP","Run rnrs program in \\fIfile\\fP as a shell script.",".TP",".B --libdirs \\fIdir\\fP:...","Set library directories to \\fIdir\\fP:....",".TP",".B --libexts \\fIext\\fP:...","Set library extensions to \\fIext\\fP:....",".TP",".B --compile-imported-libraries","Compile libraries before loading them.",".TP",".B --import-notify","Enable import search messages.",".TP",".B --optimize-level 0 | 1 | 2 | 3","Set optimize level to 0, 1, 2, or 3.",".TP",".B --debug-on-exception","On uncaught exception, call debug.",".TP",".B --eedisable","Disables the expression editor.",".TP",".B --eehistory off | \\fIfile\\fP","Set expression-editor history file or disable restore and save of history.",".TP",".B --enable-object-counts","Have collector maintain object counts.",".TP",".B --retain-static-relocation","Keep reloc information for compute-size, etc.",".TP",".B -b \\fIfile\\fP, --boot \\fIfile\\fP","Load boot code from \\fIfile\\fP.",".TP",".B --verbose","Trace boot search process.",".TP",".B --version","Print version and exit.",".TP",".B --help","Print brief command-line help and exit.",".TP",".B --","Pass all remaining command-line arguments through to Scheme.",".LP","The following options are recognized but cause the system to print an","error message and exit because saved heaps are not presently supported.",".TP 1in",".B -h \\fIfile\\fP, --heap \\fIfile\\fP",".TP",".B -s[\\fIlevel\\fP] \\fIfile\\fP, --saveheap[\\fIlevel\\fP] \\fIfile\\fP",".TP",".B -c, --compact",".LP","Any remaining command-line arguments are treated as the names of","files to be loaded before Chez Scheme begins interacting with the","user (see COMMAND-LINE FILE ARGUMENTS), unless \\*(lq--script\\*(rq or","\\*(lq--program\\*(rq is present, in which case the remaining arguments","are made available to the script via the \\fIcommand-line\\fP parameter","(see SCHEME SCRIPTS).",".SH WAITERS and CAFES",".LP","Interaction of the system with the user is performed","by a Scheme program called a \\fIwaiter\\fP, running in a","program state called a \\fI\\*c\\fP. The waiter","merely prompts, reads, evaluates, prints and loops","back for more. It is possible to open up a chain of \\*s","\\*cs by invoking the \\fInew-cafe\\fP procedure with no arguments.","New-cafe is also one of the options when an interrupt","occurs. Each \\*c has its own reset and exit procedures.","Exiting from one \\*c in the chain returns you to the next one","back, and so on, until the entire chain closes and you leave the","system altogether. Sometimes it is useful to","interrupt a long computation by typing the interrupt character,","enter a new \\*c to execute something (perhaps to check a status","variable set by computation), and exit the \\*c back to the old","computation.",".LP","You can tell what level you are at by the number of angle brackets","in the prompt, one for level one, two for level two, and so on.","Three angle brackets in the prompt means you would have to exit from","three \\*cs to get out of \\*s. If you wish to abort","from \\*s and you are several \\*cs deep, the procedure","\\fIabort\\fP leaves the system directly.",".LP","You can exit the system by typing the end-of-file character","(normally Control-D) or by using the procedure \\fIexit\\fP.","Typing Control-D is equivalent to (exit), (exit (void)), or","(exit 0), each of which is considered a \\*(lqnormal exit\\*(rq.",".SH DEBUGGER","Ordinarily, if an exception occurs during interactive use of the system,","the default exception handler displays","the condition with which the exception was raised, saves it for","possibly later use by the debugger, and prints the message","\"type (debug) to enter the debugger.\"","Once in the debugger, the user has the option of inspecting the","raise continuation, i.e., the stack frames of the pending calls.","When an exception occurs in a script or top level program, or when the","standard input and/or output ports are redirected, the default exception","handler does not save the continuation of the exception and does not print","the \"type (debug)\" message.",".LP","If the parameter debug-on-exception is set to #t, however, the default","exception handler directly invokes debug, whether running interactively or","not, and even when running a script or top-level program.","The \\*(lq--debug-on-exception\\*(rq option may be used to set","debug-on-exception to #t from the command line, which is particularly","useful when debugging scripts or top-level programs run via the","\\*(lq--script\\*(rq or \\*(lq--program\\*(rq options.",".LP","None of this applies to exceptions raised with a non-serious (warning)","condition, for which the default exception handler simply displays the","condition and returns.",".SH KEYBOARD INTERRUPTS","Running programs may be interrupted by typing the interrupt","character (normally Control-C). In response, the","system enters a break handler, which prompts for input with a","\\*(lqbreak\u003e\\*(rq prompt.","Several commands may be issued to the break handler, including","\\*(lqe\\*(rq to exit from the handler and continue,","\\*(lqr\\*(rq to reset to the current \\*c,","\\*(lqa\\*(rq to abort \\*s,","\\*(lqn\\*(rq to enter a new \\*c,","\\*(lqi\\*(rq to inspect the current continuation, and","\\*(lqs\\*(rq to display statistics about the interrupted program.","While typing an expression to the waiter, the interrupt character","simply resets to the current \\*c.",".SH EXPRESSION EDITOR",".LP","When \\*s is used interactively in a ","shell window, the waiter's \\*(lqprompt and read\\*(rq","procedure employs an expression editor that permits entry and editing of","single- and multiple-line expressions, automatically indents expressions","as they are entered, and supports name-completion based on the identifiers","defined in the interactive environment.","The expression editor also maintains a history of expressions typed during","and across sessions and supports tcsh(1)-like history movement and search","commands.","Other editing commands include simple cursor movement via","arrow keys, deletion of characters via backspace and delete, and","movement, deletion, and other commands using mostly","emacs key bindings.",".LP","The expression editor does not run if the TERM environment variable is","not set, if the standard input or output files have been redirected, or","if the --eedisable command-line option has been used.","The history is saved across sessions, by default, in the file","\\*(lq$HOME/.chezscheme_history\\*(rq.","The --eehistory command-line option","can be used to specify a different","location for the history file or to disable the saving and restoring of","the history file.",".LP","Keys for nearly all printing characters (letters, digits, and special","characters) are \\*(lqself inserting\\*(rq by default.","The open parenthesis, close parenthesis, open bracket, and close bracket","keys are self inserting as well, but also cause the editor to \\*(lqflash\\*(rq","to the matching delimiter, if any.","Furthermore, when a close parenthesis or close bracket is typed, it is","automatically corrected to match the corresponding open delimiter, if any.",".LP","Key bindings for other keys and key sequences initially recognized by","the expression editor are given below, organized into groups by function.","Some keys or key sequences serve more than one purpose depending upon","context.","For example, tab is used both for identifier completion and for","indentation.","Such bindings are shown in each applicable functional group.",".LP","Multiple-key sequences are displayed with hyphens between the keys of","the sequences, but these hyphens should not be entered.","When two or more key sequences perform the same operation, the sequences","are shown separated by commas.",".LP","Newlines, acceptance, exiting, and redisplay:",".LP",".ta \\w'{xxxxxxxxxxxxx}'u+.25i","enter, ^M\t accept balanced entry if used at end of entry;",".br","\t else add a newline before the cursor and indent",".br","^J\t accept entry unconditionally",".br","^O\t insert newline after the cursor and indent",".br","^D\t exit from the waiter if entry is empty;",".br","\t else delete character under cursor",".br","^Z\t suspend to shell if shell supports job control",".br","^L\t redisplay entry",".br","^L-^L\t clear screen and redisplay entry",".br",".LP","Basic movement and deletion:",".LP",".ta \\w'{xxxxxxxxxxxxx}'u+.25i","left, ^B\t move cursor left",".br","right, ^F\t move cursor right",".br","up, ^P\t move cursor up; from top of unmodified entry,",".br","\t move to preceding history entry.",".br","down, ^N\t move cursor down; from bottom of unmodified entry,",".br","\t move to next history entry.",".br","^D\t delete character under cursor if entry not empty;",".br","\t else exit from the waiter.",".br","backspace, ^H\t delete character before cursor",".br",".br","delete\t delete character under cursor",".br",".LP","Line movement and deletion:",".LP",".ta \\w'{xxxxxxxxxxxxx}'u+.25i","home, ^A\t move cursor to beginning of line",".br","end, ^E\t move cursor to end of line",".br","^K, esc-k\t delete to end of line or, if cursor is at the end",".br","\t of a line, join with next line",".br","^U\t delete contents of current line",".LP","When used on the first line of a multiline entry of which only the first line","is displayed, i.e., immediately after history movement, ^U deletes the","contents of the entire entry, like ^G (described below).",".br",".LP","Expression movement and deletion:",".LP",".ta \\w'{xxxxxxxxxxxxx}'u+.25i","esc-^F\t move cursor to next expression",".br","esc-^B\t move cursor to preceding expression",".br","esc-]\t move cursor to matching delimiter",".br","^]\t flash cursor to matching delimiter",".br","esc-^K, esc-delete\t delete next expression",".br","esc-backspace, esc-^H\t delete preceding expression",".br",".LP","Entry movement and deletion:",".LP",".ta \\w'{xxxxxxxxxxxxx}'u+.25i","esc-\u003c\t move cursor to beginning of entry",".br","esc-\u003e\t move cursor to end of entry",".br","^G\t delete current entry contents",".br","^C\t delete current entry contents; reset to end of history",".br",".LP","Indentation:",".LP",".ta \\w'{xxxxxxxxxxxxx}'u+.25i","tab\t re-indent current line if identifier prefix not",".br","\t just entered; else insert identifier completion",".br","esc-tab\t re-indent current line unconditionally",".br","esc-q, esc-Q, esc-^Q\t re-indent each line of entry",".br",".LP","Identifier completion:",".LP",".ta \\w'{xxxxxxxxxxxxx}'u+.25i","tab\t insert identifier completion if just entered",".br","\t identifier prefix; else re-indent current line",".br","tab-tab\t show possible identifier completions at end of",".br","\t identifier just typed, else re-indent",".br","^R\t insert next identifier completion",".LP","If at end of existing identifier, i.e., not one just typed, the first tab","re-indents, the second tab inserts identifier completion, and the third","shows possible completions.",".br",".LP","History movement:",".LP",".ta \\w'{xxxxxxxxxxxxx}'u+.25i","up, ^P\t move to preceding entry if at top of unmodified",".br","\t entry; else move up within entry",".br","down, ^N\t move to next entry if at bottom of unmodified",".br","\t entry; else move down within entry",".br","esc-up, esc-^P\t move to preceding entry from unmodified entry",".br","esc-down, esc-^N\t move to next entry from unmodified entry",".br","esc-p\t search backward through history for given prefix",".br","esc-n\t search forward through history for given prefix",".br","esc-P\t search backward through history for given string",".br","esc-N\t search forward through history for given string",".br",".LP","To search, enter a prefix or string followed by one of the search key","sequences.","Follow with additional search key sequences to search further backward or","forward in the history.","For example, enter \\*(lq(define\\*(rq followed by one or more esc-p key sequences","to search backward for entries that are definitions, or \\*(lq(define\\*(rq","followed by one or more esc-P key sequences for entries that contain","definitions.",".br",".LP","Word and page movement:",".LP",".ta \\w'{xxxxxxxxxxxxx}'u+.25i","esc-f, esc-F\t move cursor to end of next word",".br","esc-b, esc-B\t move cursor to start of preceding word",".br","^X-[\t move cursor up one screen page",".br","^X-]\t move cursor down one screen page",".br",".LP","Inserting saved text:",".LP",".ta \\w'{xxxxxxxxxxxxx}'u+.25i","^Y\t insert most recently deleted text",".br","^V\t insert contents of window selection/paste buffer",".br",".LP","Mark operations:",".LP",".ta \\w'{xxxxxxxxxxxxx}'u+.25i","^@, ^space, ^^\t set mark to current cursor position",".br","^X-^X\t move cursor to mark, leave mark at old cursor",".br","^W\t delete between current cursor position and mark",".br",".LP","Command repetition:",".LP",".ta \\w'{xxxxxxxxxxxxx}'u+.25i","esc-^U\t repeat next command four times",".br","esc-^U-\\fIn\\fP\t repeat next command \\fIn\\fP times",".br",".SH TOP-LEVEL ENVIRONMENT SEMANTICS",".LP","Upon startup, the \\*(lqinteraction environment\\*(rq used to","hold the top-level bindings for user-defined variables and other","identifiers contains an initial set of bindings, some standard","and some specific to \\*s.","Any initial identifier binding may be replaced by redefining","the identifier with a normal top-level definition.","For example, the initial binding for \\fIcons\\fP can be replaced","with one that performs a \"reverse cons\" as follows.",".br",".sp","(define cons (lambda (x y) (import scheme) (cons y x)))",".br",".sp","Code entered into the REPL or loaded from a file prior to this","point will still use the original binding for \\fIcons\\fP.","If you want it to use the new binding, you must reenter or reload","the code.","Furthermore, the initial bindings for variables like \\fIcons\\fP are immutable,","so you cannot assign one (e.g., via set! or trace) without first defining","it.","This allows the system to check to make sure it receives the expected","two arguments at compile time and generate inline code to allocate","the pair.","This is not the case if \\fIcons\\fP is redefined, even if redefined to have","the same value, since its value can be changed via set! at any time","during a program run.",".SH COMMAND-LINE FILE ARGUMENTS",".LP","In the normal mode of operation,","the file names on the command line (except for the arguments","to the various command-line options) are","loaded before \\*s begins interacting with the user. Each of the","expressions in the loaded files is executed just as if it were","typed by the user in response to a prompt. If you wish to load a","set of definitions each time, consider setting up a shell script to","load the file \\*(lq.schemerc\\*(rq from your home directory:",".br",".sp"," {InstallSchemeName} ${HOME}/.schemerc $*",".sp",".br","If you have a ","substantial number of definitions to load each time, it might","be worthwhile to compile the .schemerc file (that is, compile","the definitions and name the resulting object file .schemerc).",".LP","Typically, a Scheme programmer creates a source file of","definitions and other Scheme forms using an editor such as","\\fIvi\\fP(1) or \\fIemacs\\fP(1)","and loads the file into Scheme to test them. The","conventional filename extension for \\*s source files","is \\fI.ss\\fP. Such a file may be loaded during a session by typing","(load \\*(lq\\fIfilename\\fP\\*(rq), or by specifying the filename on","the command line as mentioned above. Any expression that may be","typed interactively may be placed in a file to be loaded.",".SH SCHEME SCRIPTS",".LP","When the \\*(lq--script\\*(rq option is used, the named file is","treated as a Scheme shell script, and the script name and remaining","command-line arguments are made available via the parameter","\\*(lqcommand-line\\*(rq.","To support executable shell scripts, the system ignores the first","line of a loaded script if it begins with #! followed by","a space or forward slash.","For example, the following script prints its command-line arguments.",".br",".sp","#! {InstallBin}/{InstallSchemeName} --script",".br","(for-each",".br"," (lambda (x) (display x) (newline))",".br"," (cdr (command-line)))",".SH RNRS TOP-LEVEL PROGRAMS",".LP","The \\*(lq--program\\*(rq option is like the \\*(lq--script\\*(rq option","except that the script file is treated as an RNRS top-level program.","The following RNRS top-level program prints its command-line arguments, as","with the script above.",".br",".sp","#! {InstallBin}/{InstallSchemeName} --program",".br","(import (rnrs))",".br","(for-each",".br"," (lambda (x) (display x) (newline))",".br"," (cdr (command-line)))",".LP","\\*(lqscheme-script\\*(rq may be used in place of \\*(lqscheme --program\\*(rq,","possibly prefixed by \\*(lq/usr/bin/env\\*(rq as suggested in the nonnormative","R6RS appendix on running top-level programs as scripts, i.e., the first line","of the top-level program may be replaced with the following.",".br",".sp","#! /usr/bin/env {InstallScriptName}",".br",".LP","If a top-level program depends on libraries other than those built into","\\*s, the \\*(lq--libdirs\\*(rq option can be used to specify","which source and object directories to search.","Similarly, if a library upon which a top-level program depends has an","extension other than one of the standard extensions, the","\\*(lq--libexts\\*(rq option can be used to specify additional extensions","to search.",".LP","These options set the corresponding \\*s parameters","library-directories and library-extensions.","The values of both parameters are lists of pairs of strings.","The first string in each library-directories pair identifies a","source-file root directory, and the second identifies the corresponding","object-file root directory.","Similarly, the first string in each library-extensions pair","identifies a source-file extension, and the second identifies the","corresponding object-file extension.","The full path of a library source or object file consists of the source or","object root followed by the components of the library name prefixed by","slashes, with the library extension added on the end.","For example, for root /usr/lib/scheme, library name","(app lib1), and extension .sls, the full path is","/usr/lib/scheme/app/lib1.sls.",".LP","The format of the arguments to \\*(lq--libdirs\\*(rq and","\\*(lq--libexts\\*(rq is the same:","a sequence of substrings separated by a single separator","character.","The separator character is a colon (:), except under Windows where it is a","semi-colon (;).","Between single separators, the source and object strings, if both are","specified, are separated by two separator characters.","If a single separator character appears at the end of the string,","the specified pairs are added to the existing list; otherwise, the","specified pairs replace the existing list.","The parameters are set after all boot files have been loaded.",".LP","If multiple \\*(lq--libdirs\\*(rq options appear, all but the final","one are ignored, and if ","If multiple \\*(lq--libexts\\*(rq options appear, all but the final","are ignored.","If no \\*(lq--libdirs\\*(rq option appears and the CHEZSCHEMELIBDIRS","environment variable is set, the string value of CHEZSCHEMELIBDIRS is","treated as if it were specified by a \\*(lq--libdirs\\*(rq option.","Similarly, if no \\*(lq--libexts\\*(rq option appears and the CHEZSCHEMELIBEXTS","environment variable is set, the string value of CHEZSCHEMELIBEXTS is","treated as if it were specified by a \\*(lq--libexts\\*(rq option.",".LP","The library-directories and library-extensions","parameters set by these options are consulted by the expander when it","encounters an import for a library that has not previously been defined or","loaded.","The expander first constructs a partial name from the list of components in the","library name, e.g., \\*(lqa/b\\*(rq for library (a b).","It then searches for the partial name in each pair","of root directories, in order, trying each of the source extensions then","each of the object extensions in turn before moving onto the next pair of","root directories.","If the partial name is an absolute pathname, e.g., \\*(lq~/.myappinit\\*(rq","for a library named (~/.myappinit), only the specified absolute","path is searched, first with each source extension, then with each object","extension.","If the expander finds both a source file and its corresponding object","file, and the object file is not older than the source file, the","expander loads the object file.","If the object file does not exist, if the object file is older, or","if after loading the object file, the expander determines it was","built using a library or include file that has changed, the source","file is loaded or compiled, depending on the value of the parameter","compile-imported-libraries.","If compile-imported-libraries","is set to #t, the expander","compiles the library via compile-library (which is described below).","Otherwise, the expander loads the source file.","(Loading the source file actually causes the code to be compiled,","assuming the default value of current-eval, but the compiled","code is not saved to an object file.)","An exception is raised during this process if a","source or object file exists but is not readable or if an object","file cannot be created.",".LP","The search process used by the expander when processing an import","for a library that has not yet been loaded can be monitored by","setting the parameter import-notify to #t.","This parameter can be set from the command line via the","\\*(lq--import-notify\\*(rq command-line option.",".SH OPTIMIZE LEVELS","The \\*(lq--optimize-level\\*(rq option sets the initial value of the","\\*s optimize-level parameter to 0, 1, 2, or 3.","The value is 0 by default.",".LP","At optimize-levels 0, 1, and 2, code generated by the compiler is","\\fIsafe\\fP, i.e., generates full type and bounds checks.","At optimize-level 3, code generated by the compiler is \\fIunsafe\\fP,","i.e., may omit these checks.","Unsafe code is usually faster, but optimize-level 3 should be used only","for well-tested code since the absence of type and bounds checks may","result in invalid memory references, corruption of the Scheme heap (which","may cause seemingly unrelated problems later), system crashes, or other","undesirable behaviors.",".LP","At present, there is no direct difference other than safety among","optimize levels.",".SH COMPILING FILES",".LP","\\*s compiles source expressions as it sees them. In","order to speed loading of a large file, the file may be compiled","with the output placed in an object file.","(compile-file \\*(lqfoo\\*(rq) compiles the expressions in the file","\\*(lqfoo.ss\\*(rq and places the resulting object code on the file","\\*(lqfoo.so\\*(rq. Loading a pre-compiled file is no different from","loading the source file, except that loading is faster since","compilation is already done. ",".LP","To compile a program to be run with --program, use","compile-program instead of compile-file.","compile-program preserves the first line unchanged, if it begins","with #! followed by a forward slash or space.","Also, while compile-file compresses the resulting object file,","compile-program does not do so if the #! line is present, so","it can be recognized by the shell's script executor.","Any libraries upon which the top-level program depends, other than","built-in libraries, must be compiled first via compile-file","or compile-library.","This can be done manually or by setting the parameter","compile-imported-libraries to #t before compiling the program.",".LP","To compile a script to be run with --script, use","compile-script instead of compile-file.","compile-script is like compile-program, but, like compile-file, implements","the interactive top-level semantics rather than the RNRS top-level","program semantics.",".SH BOOT and HEAP FILES",".LP","When \\*s is run, it looks for one or more boot files to load.","Boot files contain the compiled Scheme code that implements most of","the Scheme system, including the interpreter, compiler, and most","libraries.","Boot files may be specified explicitly on the command","line via \\*(lq-b\\*(rq options or implicitly.","In the simplest case, no \\*(lq-b\\*(rq options","are given and the necessary boot files are loaded","automatically based on the name of the executable.","For example, if the executable name is \\*(lqmyapp\\*(rq, the","system looks for \\*(lqmyapp.boot\\*(rq in a set of standard","directories.","It also looks for and loads any subordinate boot files required","by \\*(lqmyapp.boot\\*(rq.","Subordinate boot files are also loaded automatically for the","first boot file explicitly specified via the command line.","When multiple boot files are specified via the command line and boot each","file must be listed before those that depend upon it.",".LP","The \\*(lq--verbose\\*(rq option may be used to trace the boot file","searching process and must appear before any boot arguments","for which search tracing is desired.",".LP","Ordinarily, the search for boot files is limited to a set of","default installation directories, but this may be overridden by setting","the environment variable SCHEMEHEAPDIRS.","SCHEMEHEAPDIRS should be a colon-separated list of directories, listed in","the order in which they should be searched.","Within each directory, the two-character escape sequence \\*(lq%v\\*(rq","is replaced by the current version, and the two-character escape sequence","\\*(lq%m\\*(rq is replaced by the machine type.","A percent followed by any other character is replaced by the second","character; in particular, \\*(lq%%\\*(rq is replaced by \\*(lq%\\*(rq, and","\\*(lq%:\\*(rq is replaced by \\*(lq:\\*(rq.","If SCHEMEHEAPDIRS ends in a non-escaped colon, the default directories are","searched after those in SCHEMEHEAPDIRS; otherwise, only those listed in","SCHEMEHEAPDIRS are searched.","Under Windows, semi-colons are used in place of colons.",".LP","Boot files consist of a header followed by ordinary compiled code and","may be created with make-boot-file.","For example,",".br",".sp"," (make-boot-file \"myapp.boot\" '(\"petite\")"," \"myapp1.so\" \"myapp2.so\")",".sp",".br","creates a boot file containing the code from myapp1.so and myapp2.so","with a header identifying petite.boot as a boot file upon which the new","boot file depends.","Source files can be provided as well and are compiled on-the-fly","by make-boot-header.",".LP","Multiple alternatives for the boot file upon which the new boot","file depends can be listed, e.g.:",".br",".sp"," (make-boot-file \"myapp.boot\" '(\"petite\" \"scheme\")"," \"myapp1.so\" \"myapp2.so\")",".sp",".br","When possible, both \\*(lqscheme\\*(lq and \\*(lqpetite\\*(lq should be","specified when creating a boot file for an application, as shown above, so","that the application can run in either \\*p or \\*s.","If the application requires the use of the compiler, just","\\*(lqscheme\\*(lq should be specified.",".LP","If the new boot file is to be a base boot file, i.e., one that does not","depend on another boot file, petite.boot (or some other boot file created","from petite.boot) should be listed first among the input files.",".br",".sp"," (make-boot-file \"myapp.boot\" '() \"petite.boot\""," \"myapp1.so\" \"myapp2.so\")",".sp",".br",".SH DOCUMENTATION",".LP","Complete documentation for \\*s is available in two parts:","\\fIThe Scheme Programming Language, 4th Edition\\fP, and","\\fIThe Chez Scheme Version 9 User's Guide\\fP.","The first document is available in printed form from MIT Press,","and links to online versions of both documents are available","at https://cisco.github.io/ChezScheme/.",".LP","Several example Scheme programs, ranging from a simple factorial procedure","to a somewhat complex unification algorithm, are in the examples directory","(see FILES below). Looking at and trying out example programs is a good way","to start learning Scheme.",".SH ENVIRONMENT",".LP","The environment variable",".B SCHEMEHEAPDIRS \\fR","(see above) may be set","to a colon-separated (semi-colon under Windows) list of directories","in which to search for boot files.",".SH FILES",".if 0 COMMENT: put the longest path from below in the tab computation:",".ta \\w'{InstallLibExamples}'u+.25i","{InstallBin}/{InstallSchemeName}\texecutable file",".br","{InstallBin}/{InstallPetiteName}\texecutable file",".br","{InstallBin}/{InstallScriptName}\texecutable file",".br","{InstallLibExamples}\texample program library",".br","{InstallLibBin}\tboot and include files",".sp",".br",".SH SEE ALSO",".in +5",".br",".ti -5","R. Kent Dybvig,","\\fIThe Scheme Programming Language, 4th Edition\\fP,","MIT Press (2009), http://www.scheme.com/tspl4/.",".br",".ti -5","\\fIChez Scheme Version 9 User's Guide\\fP,","Cisco Systems, Inc.",".br",".ti -5","Michael Sperber, R. Kent Dybvig, Matthew Flatt, and Anton van Straaten, eds.,",".if t \\*(lqRevised\\u6\\d Report on the Algorithmic Language Scheme,\\*(rq",".if n \\*(lqRevised^6 Report on the Algorithmic Language Scheme,\\*(rq","(2007), http://www.r6rs.org/.",".br",".ti -5","Daniel P. Friedman and Matthias Felleisen,","\\fIThe Little Schemer\\fP, fourth edition,","MIT Press (1996).",".br",".ti -5","Harold Abelson and Gerald J. Sussman with Julie Sussman,","\\fIStructure and Interpretation of Computer Programs,","Second Edition\\fP,","MIT press (1996).",".in -5",".SH AUTHOR","Copyright 2019 Cisco Systems, Inc.","Licensed under the Apache License, Version 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class="react-line-number react-code-text" style="padding-right:16px">731</div><div data-line-number="732" class="react-line-number react-code-text" style="padding-right:16px">732</div><div data-line-number="733" class="react-line-number react-code-text" style="padding-right:16px">733</div><div data-line-number="734" class="react-line-number react-code-text" style="padding-right:16px">734</div><div data-line-number="735" class="react-line-number react-code-text" style="padding-right:16px">735</div><div data-line-number="736" class="react-line-number react-code-text" style="padding-right:16px">736</div><div data-line-number="737" class="react-line-number react-code-text" style="padding-right:16px">737</div><div data-line-number="738" class="react-line-number react-code-text" style="padding-right:16px">738</div><div data-line-number="739" class="react-line-number react-code-text" style="padding-right:16px">739</div><div data-line-number="740" class="react-line-number react-code-text" style="padding-right:16px">740</div><div data-line-number="741" class="react-line-number react-code-text" style="padding-right:16px">741</div><div data-line-number="742" class="react-line-number react-code-text" style="padding-right:16px">742</div><div data-line-number="743" class="react-line-number react-code-text" style="padding-right:16px">743</div><div data-line-number="744" class="react-line-number react-code-text" style="padding-right:16px">744</div><div data-line-number="745" class="react-line-number react-code-text" style="padding-right:16px">745</div><div data-line-number="746" class="react-line-number react-code-text" style="padding-right:16px">746</div><div data-line-number="747" class="react-line-number react-code-text" style="padding-right:16px">747</div><div data-line-number="748" class="react-line-number react-code-text" style="padding-right:16px">748</div><div data-line-number="749" class="react-line-number react-code-text" style="padding-right:16px">749</div><div data-line-number="750" class="react-line-number react-code-text" style="padding-right:16px">750</div><div data-line-number="751" class="react-line-number react-code-text" style="padding-right:16px">751</div><div data-line-number="752" class="react-line-number react-code-text" style="padding-right:16px">752</div><div data-line-number="753" class="react-line-number react-code-text" style="padding-right:16px">753</div><div data-line-number="754" class="react-line-number react-code-text" style="padding-right:16px">754</div><div data-line-number="755" class="react-line-number react-code-text" style="padding-right:16px">755</div><div data-line-number="756" class="react-line-number react-code-text" style="padding-right:16px">756</div><div data-line-number="757" class="react-line-number react-code-text" style="padding-right:16px">757</div><div data-line-number="758" class="react-line-number react-code-text" style="padding-right:16px">758</div><div data-line-number="759" class="react-line-number react-code-text" style="padding-right:16px">759</div><div data-line-number="760" class="react-line-number react-code-text" style="padding-right:16px">760</div><div data-line-number="761" class="react-line-number react-code-text" style="padding-right:16px">761</div><div data-line-number="762" class="react-line-number react-code-text" style="padding-right:16px">762</div><div data-line-number="763" class="react-line-number react-code-text" style="padding-right:16px">763</div><div data-line-number="764" class="react-line-number react-code-text" style="padding-right:16px">764</div><div data-line-number="765" class="react-line-number react-code-text" style="padding-right:16px">765</div><div data-line-number="766" class="react-line-number react-code-text" style="padding-right:16px">766</div><div data-line-number="767" class="react-line-number react-code-text" style="padding-right:16px">767</div><div data-line-number="768" class="react-line-number react-code-text" style="padding-right:16px">768</div><div data-line-number="769" class="react-line-number react-code-text" style="padding-right:16px">769</div><div data-line-number="770" class="react-line-number react-code-text" style="padding-right:16px">770</div><div data-line-number="771" class="react-line-number react-code-text" style="padding-right:16px">771</div><div data-line-number="772" class="react-line-number react-code-text" style="padding-right:16px">772</div><div data-line-number="773" class="react-line-number react-code-text" style="padding-right:16px">773</div><div data-line-number="774" class="react-line-number react-code-text" style="padding-right:16px">774</div><div data-line-number="775" class="react-line-number react-code-text" style="padding-right:16px">775</div><div data-line-number="776" class="react-line-number react-code-text" style="padding-right:16px">776</div><div data-line-number="777" class="react-line-number react-code-text" style="padding-right:16px">777</div><div data-line-number="778" class="react-line-number react-code-text" style="padding-right:16px">778</div><div data-line-number="779" class="react-line-number react-code-text" style="padding-right:16px">779</div><div data-line-number="780" class="react-line-number react-code-text" style="padding-right:16px">780</div><div data-line-number="781" class="react-line-number react-code-text" style="padding-right:16px">781</div><div data-line-number="782" class="react-line-number react-code-text" style="padding-right:16px">782</div><div data-line-number="783" class="react-line-number react-code-text" style="padding-right:16px">783</div><div data-line-number="784" class="react-line-number react-code-text" style="padding-right:16px">784</div><div data-line-number="785" class="react-line-number react-code-text" style="padding-right:16px">785</div><div data-line-number="786" class="react-line-number react-code-text" style="padding-right:16px">786</div><div data-line-number="787" class="react-line-number react-code-text" style="padding-right:16px">787</div><div data-line-number="788" class="react-line-number react-code-text" style="padding-right:16px">788</div><div data-line-number="789" class="react-line-number react-code-text" style="padding-right:16px">789</div><div data-line-number="790" class="react-line-number react-code-text" style="padding-right:16px">790</div><div data-line-number="791" class="react-line-number react-code-text" style="padding-right:16px">791</div><div data-line-number="792" class="react-line-number react-code-text" style="padding-right:16px">792</div><div data-line-number="793" class="react-line-number react-code-text" style="padding-right:16px">793</div><div data-line-number="794" class="react-line-number react-code-text" style="padding-right:16px">794</div><div data-line-number="795" class="react-line-number react-code-text" style="padding-right:16px">795</div><div data-line-number="796" class="react-line-number react-code-text" style="padding-right:16px">796</div><div data-line-number="797" class="react-line-number react-code-text" style="padding-right:16px">797</div><div data-line-number="798" class="react-line-number react-code-text" style="padding-right:16px">798</div><div data-line-number="799" class="react-line-number react-code-text" style="padding-right:16px">799</div></div><div class="react-code-lines"><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC1" class="react-file-line html-div" data-testid="code-cell" data-line-number="1" style="position:relative">.<span class="pl-k">ds</span> <span class="pl-v"><span class="pl-en">s</span></span><span class="pl-s"> <span class="pl-cce"><span class="pl-en">\fI</span></span><span class="pl-mi">Chez</span> <span class="pl-mi">Scheme</span><span class="pl-cce"><span class="pl-en">\fP</span></span></span></div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC2" class="react-file-line html-div" data-testid="code-cell" data-line-number="2" style="position:relative">.<span class="pl-k">ds</span> <span class="pl-v"><span class="pl-en">p</span></span><span class="pl-s"> <span class="pl-cce"><span class="pl-en">\fI</span></span><span class="pl-mi">Petite</span> <span class="pl-mi">Chez</span> <span class="pl-mi">Scheme</span><span class="pl-cce"><span class="pl-en">\fP</span></span></span></div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC3" class="react-file-line html-div" data-testid="code-cell" data-line-number="3" style="position:relative">.<span class="pl-k">if</span> <span class="pl-c1">t</span> .<span class="pl-k">ds</span> <span class="pl-v"><span class="pl-en">c</span></span><span class="pl-s"> caf<span class="pl-cce"><span class="pl-en">\o</span><span class="pl-s">'<span class="pl-cce">\'</span>e'</span></span></span></div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC4" class="react-file-line html-div" data-testid="code-cell" data-line-number="4" style="position:relative">.<span class="pl-k">if</span> <span class="pl-c1">n</span> .<span class="pl-k">ds</span> <span class="pl-v"><span class="pl-en">c</span></span><span class="pl-s"> cafe</span></div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC5" class="react-file-line html-div" data-testid="code-cell" data-line-number="5" style="position:relative">.<span class="pl-k">ds</span> <span class="pl-v"><span class="pl-en">]W</span></span><span class="pl-s"> </span></div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC6" class="react-file-line html-div" data-testid="code-cell" data-line-number="6" style="position:relative"><span class="pl-mh">.<span class="pl-en">TH</span> SCHEME 1 "Chez Scheme Version 9.5.3 September 2019"</span></div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC7" class="react-file-line html-div" data-testid="code-cell" data-line-number="7" style="position:relative"><span class="pl-mh">.<span class="pl-en">SH</span> NAME</span></div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC8" class="react-file-line html-div" data-testid="code-cell" data-line-number="8" style="position:relative"><span class="pl-cce"><span class="pl-en">\fI</span></span><span class="pl-mi">Chez</span> <span class="pl-mi">Scheme</span><span class="pl-cce"><span class="pl-en">\fP</span></span></div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC9" class="react-file-line html-div" data-testid="code-cell" data-line-number="9" style="position:relative">.<span class="pl-e">br</span></div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC10" class="react-file-line html-div" data-testid="code-cell" data-line-number="10" style="position:relative"><span class="pl-cce"><span class="pl-en">\fI</span></span><span class="pl-mi">Petite</span> <span class="pl-mi">Chez</span> <span class="pl-mi">Scheme</span><span class="pl-cce"><span class="pl-en">\fP</span></span></div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC11" class="react-file-line html-div" data-testid="code-cell" data-line-number="11" style="position:relative"><span class="pl-mh">.<span class="pl-en">SH</span> SYNOPSIS</span></div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC12" class="react-file-line html-div" data-testid="code-cell" data-line-number="12" style="position:relative"><span class="pl-cce"><span class="pl-en">\fB</span></span><span class="pl-mb">{InstallSchemeName}</span><span class="pl-cce"><span class="pl-en">\fP</span></span> [ <span class="pl-cce"><span class="pl-en">\fI</span></span><span class="pl-mi">options</span><span class="pl-cce"><span class="pl-en">\fP</span></span> ] <span class="pl-cce"><span class="pl-en">\fI</span></span><span class="pl-mi">file</span><span class="pl-cce"><span class="pl-en">\fP</span></span> ...</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC13" class="react-file-line html-div" data-testid="code-cell" data-line-number="13" style="position:relative">.<span class="pl-e">br</span></div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC14" class="react-file-line html-div" data-testid="code-cell" data-line-number="14" style="position:relative"><span class="pl-cce"><span class="pl-en">\fB</span></span><span class="pl-mb">{InstallPetiteName}</span><span class="pl-cce"><span class="pl-en">\fP</span></span> [ <span class="pl-cce"><span class="pl-en">\fI</span></span><span class="pl-mi">options</span><span class="pl-cce"><span class="pl-en">\fP</span></span> ] <span class="pl-cce"><span class="pl-en">\fI</span></span><span class="pl-mi">file</span><span class="pl-cce"><span class="pl-en">\fP</span></span> ...</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC15" class="react-file-line html-div" data-testid="code-cell" data-line-number="15" style="position:relative"><span class="pl-mh">.<span class="pl-en">SH</span> DESCRIPTION</span></div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC16" class="react-file-line html-div" data-testid="code-cell" data-line-number="16" style="position:relative"><span class="pl-cce"><span class="pl-en">\*</span><span class="pl-v">s</span></span> is a programming language, based on R6RS Scheme, and a</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC17" class="react-file-line html-div" data-testid="code-cell" data-line-number="17" style="position:relative">high-performance implementation of that language.</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC18" class="react-file-line html-div" data-testid="code-cell" data-line-number="18" style="position:relative"><span class="pl-cce"><span class="pl-en">\*</span><span class="pl-v">s</span></span> compiles source expressions <span class="pl-cce"><span class="pl-en">\fI</span></span><span class="pl-mi">incrementally</span><span class="pl-cce"><span class="pl-en">\fP</span></span> to machine code,</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC19" class="react-file-line html-div" data-testid="code-cell" data-line-number="19" style="position:relative">providing the speed of compiled code in an interactive system.</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC20" class="react-file-line html-div" data-testid="code-cell" data-line-number="20" style="position:relative">.<span class="pl-e">LP</span></div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC21" class="react-file-line html-div" data-testid="code-cell" data-line-number="21" style="position:relative"><span class="pl-cce"><span class="pl-en">\*</span><span class="pl-v">p</span></span> is an interpreted version of <span class="pl-cce"><span class="pl-en">\*</span><span class="pl-v">s</span></span> that may be</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC22" class="react-file-line html-div" data-testid="code-cell" data-line-number="22" style="position:relative">used as a run-time environment for <span class="pl-cce"><span class="pl-en">\*</span><span class="pl-v">s</span></span> applications or as a</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC23" class="react-file-line html-div" data-testid="code-cell" data-line-number="23" style="position:relative">stand-alone Scheme system.</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC24" class="react-file-line html-div" data-testid="code-cell" data-line-number="24" style="position:relative">With the exception that the compiler is not present, <span class="pl-cce"><span class="pl-en">\*</span><span class="pl-v">p</span></span> is 100%</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC25" class="react-file-line html-div" data-testid="code-cell" data-line-number="25" style="position:relative">compatible with <span class="pl-cce"><span class="pl-en">\*</span><span class="pl-v">s</span></span>.</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC26" class="react-file-line html-div" data-testid="code-cell" data-line-number="26" style="position:relative">Interpreted code is fast in <span class="pl-cce"><span class="pl-en">\*</span><span class="pl-v">p</span></span>, but generally not nearly as fast as</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC27" class="react-file-line html-div" data-testid="code-cell" data-line-number="27" style="position:relative">compiled code.</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC28" class="react-file-line html-div" data-testid="code-cell" data-line-number="28" style="position:relative">Debugging and profiling support is also limited for interpreted</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC29" class="react-file-line html-div" data-testid="code-cell" data-line-number="29" style="position:relative">code.</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC30" class="react-file-line html-div" data-testid="code-cell" data-line-number="30" style="position:relative">.<span class="pl-e">LP</span></div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC31" class="react-file-line html-div" data-testid="code-cell" data-line-number="31" style="position:relative">Scheme is normally used interactively. The system prompts</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC32" class="react-file-line html-div" data-testid="code-cell" data-line-number="32" style="position:relative">the user with a right angle bracket (<span class="pl-cce"><span class="pl-en">\*(</span><span class="pl-v">lq</span></span>><span class="pl-cce"><span class="pl-en">\*(</span><span class="pl-v">rq</span></span>) at the beginning of each</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC33" class="react-file-line html-div" data-testid="code-cell" data-line-number="33" style="position:relative">input line. Any Scheme expression may be entered. The system evaluates</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC34" class="react-file-line html-div" data-testid="code-cell" data-line-number="34" style="position:relative">the expression and prints the result. After printing</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC35" class="react-file-line html-div" data-testid="code-cell" data-line-number="35" style="position:relative">the result, the system prompts again for more input.</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC36" class="react-file-line html-div" data-testid="code-cell" data-line-number="36" style="position:relative">The user can exit the system by typing </div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC37" class="react-file-line html-div" data-testid="code-cell" data-line-number="37" style="position:relative">Control-D or by using the procedure <span class="pl-cce"><span class="pl-en">\fI</span></span><span class="pl-mi">exit</span><span class="pl-cce"><span class="pl-en">\fP</span></span>.</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC38" class="react-file-line html-div" data-testid="code-cell" data-line-number="38" style="position:relative"><span class="pl-mh">.<span class="pl-en">SH</span> COMMAND-LINE OPTIONS</span></div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC39" class="react-file-line html-div" data-testid="code-cell" data-line-number="39" style="position:relative">.<span class="pl-e">LP</span></div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC40" class="react-file-line html-div" data-testid="code-cell" data-line-number="40" style="position:relative"><span class="pl-cce"><span class="pl-en">\*</span><span class="pl-v">s</span></span> recognizes the following command line options:</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC41" class="react-file-line html-div" data-testid="code-cell" data-line-number="41" style="position:relative">.<span class="pl-e">TP</span> <span class="pl-c1">1<span class="pl-k">i</span></span></div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC42" class="react-file-line html-div" data-testid="code-cell" data-line-number="42" style="position:relative"><span class="pl-mh">.<span class="pl-en">B</span> <span class="pl-mb">-q,</span> <span class="pl-mb">--quiet</span></span></div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC43" class="react-file-line html-div" data-testid="code-cell" data-line-number="43" style="position:relative">Suppress greeting and prompts.</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC44" class="react-file-line html-div" data-testid="code-cell" data-line-number="44" style="position:relative">.<span class="pl-e">TP</span></div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC45" class="react-file-line html-div" data-testid="code-cell" data-line-number="45" style="position:relative"><span class="pl-mh">.<span class="pl-en">B</span> <span class="pl-mb">--script</span> <span class="pl-mb"><span class="pl-cce"><span class="pl-en">\fI</span></span><span class="pl-mi">file</span><span class="pl-cce"><span class="pl-en">\fP</span></span></span></span></div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC46" class="react-file-line html-div" data-testid="code-cell" data-line-number="46" style="position:relative">Run <span class="pl-cce"><span class="pl-en">\fI</span></span><span class="pl-mi">file</span><span class="pl-cce"><span class="pl-en">\fP</span></span> as a shell script.</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC47" class="react-file-line html-div" data-testid="code-cell" data-line-number="47" style="position:relative">.<span class="pl-e">TP</span></div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC48" class="react-file-line html-div" data-testid="code-cell" data-line-number="48" style="position:relative"><span class="pl-mh">.<span class="pl-en">B</span> <span class="pl-mb">--program</span> <span class="pl-mb"><span class="pl-cce"><span class="pl-en">\fI</span></span><span class="pl-mi">file</span><span class="pl-cce"><span class="pl-en">\fP</span></span></span></span></div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC49" class="react-file-line html-div" data-testid="code-cell" data-line-number="49" style="position:relative">Run rnrs program in <span class="pl-cce"><span class="pl-en">\fI</span></span><span class="pl-mi">file</span><span class="pl-cce"><span class="pl-en">\fP</span></span> as a shell script.</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC50" class="react-file-line html-div" data-testid="code-cell" data-line-number="50" style="position:relative">.<span class="pl-e">TP</span></div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC51" class="react-file-line html-div" data-testid="code-cell" data-line-number="51" style="position:relative"><span class="pl-mh">.<span class="pl-en">B</span> <span class="pl-mb">--libdirs</span> <span class="pl-mb"><span class="pl-cce"><span class="pl-en">\fI</span></span><span class="pl-mi">dir</span><span class="pl-cce"><span class="pl-en">\fP</span></span>:...</span></span></div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC52" class="react-file-line html-div" data-testid="code-cell" data-line-number="52" style="position:relative">Set library directories to <span class="pl-cce"><span class="pl-en">\fI</span></span><span class="pl-mi">dir</span><span class="pl-cce"><span class="pl-en">\fP</span></span>:....</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC53" class="react-file-line html-div" data-testid="code-cell" data-line-number="53" style="position:relative">.<span class="pl-e">TP</span></div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC54" class="react-file-line html-div" data-testid="code-cell" data-line-number="54" style="position:relative"><span class="pl-mh">.<span class="pl-en">B</span> <span class="pl-mb">--libexts</span> <span class="pl-mb"><span class="pl-cce"><span class="pl-en">\fI</span></span><span class="pl-mi">ext</span><span class="pl-cce"><span class="pl-en">\fP</span></span>:...</span></span></div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC55" class="react-file-line html-div" data-testid="code-cell" data-line-number="55" style="position:relative">Set library extensions to <span class="pl-cce"><span class="pl-en">\fI</span></span><span class="pl-mi">ext</span><span class="pl-cce"><span class="pl-en">\fP</span></span>:....</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC56" class="react-file-line html-div" data-testid="code-cell" data-line-number="56" style="position:relative">.<span class="pl-e">TP</span></div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC57" class="react-file-line html-div" data-testid="code-cell" data-line-number="57" style="position:relative"><span class="pl-mh">.<span class="pl-en">B</span> <span class="pl-mb">--compile-imported-libraries</span></span></div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC58" class="react-file-line html-div" data-testid="code-cell" data-line-number="58" style="position:relative">Compile libraries before loading them.</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC59" class="react-file-line html-div" data-testid="code-cell" data-line-number="59" style="position:relative">.<span class="pl-e">TP</span></div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC60" class="react-file-line html-div" data-testid="code-cell" data-line-number="60" style="position:relative"><span class="pl-mh">.<span class="pl-en">B</span> <span class="pl-mb">--import-notify</span></span></div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC61" class="react-file-line html-div" data-testid="code-cell" data-line-number="61" style="position:relative">Enable import search messages.</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC62" class="react-file-line html-div" data-testid="code-cell" data-line-number="62" style="position:relative">.<span class="pl-e">TP</span></div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC63" class="react-file-line html-div" data-testid="code-cell" data-line-number="63" style="position:relative"><span class="pl-mh">.<span class="pl-en">B</span> <span class="pl-mb">--optimize-level</span> <span class="pl-mb">0</span> <span class="pl-mb">|</span> <span class="pl-mb">1</span> <span class="pl-mb">|</span> <span class="pl-mb">2</span> <span class="pl-mb">|</span> <span class="pl-mb">3</span></span></div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC64" class="react-file-line html-div" data-testid="code-cell" data-line-number="64" style="position:relative">Set optimize level to 0, 1, 2, or 3.</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC65" class="react-file-line html-div" data-testid="code-cell" data-line-number="65" style="position:relative">.<span class="pl-e">TP</span></div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC66" class="react-file-line html-div" data-testid="code-cell" data-line-number="66" style="position:relative"><span class="pl-mh">.<span class="pl-en">B</span> <span class="pl-mb">--debug-on-exception</span></span></div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC67" class="react-file-line html-div" data-testid="code-cell" data-line-number="67" style="position:relative">On uncaught exception, call debug.</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC68" class="react-file-line html-div" data-testid="code-cell" data-line-number="68" style="position:relative">.<span class="pl-e">TP</span></div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC69" class="react-file-line html-div" data-testid="code-cell" data-line-number="69" style="position:relative"><span class="pl-mh">.<span class="pl-en">B</span> <span class="pl-mb">--eedisable</span></span></div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC70" class="react-file-line html-div" data-testid="code-cell" data-line-number="70" style="position:relative">Disables the expression editor.</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC71" class="react-file-line html-div" data-testid="code-cell" data-line-number="71" style="position:relative">.<span class="pl-e">TP</span></div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC72" class="react-file-line html-div" data-testid="code-cell" data-line-number="72" style="position:relative"><span class="pl-mh">.<span class="pl-en">B</span> <span class="pl-mb">--eehistory</span> <span class="pl-mb">off</span> <span class="pl-mb">|</span> <span class="pl-mb"><span class="pl-cce"><span class="pl-en">\fI</span></span><span class="pl-mi">file</span><span class="pl-cce"><span class="pl-en">\fP</span></span></span></span></div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC73" class="react-file-line html-div" data-testid="code-cell" data-line-number="73" style="position:relative">Set expression-editor history file or disable restore and save of history.</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC74" class="react-file-line html-div" data-testid="code-cell" data-line-number="74" style="position:relative">.<span class="pl-e">TP</span></div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC75" class="react-file-line html-div" data-testid="code-cell" data-line-number="75" style="position:relative"><span class="pl-mh">.<span class="pl-en">B</span> <span class="pl-mb">--enable-object-counts</span></span></div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC76" class="react-file-line html-div" data-testid="code-cell" data-line-number="76" style="position:relative">Have collector maintain object counts.</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC77" class="react-file-line html-div" data-testid="code-cell" data-line-number="77" style="position:relative">.<span class="pl-e">TP</span></div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC78" class="react-file-line html-div" data-testid="code-cell" data-line-number="78" style="position:relative"><span class="pl-mh">.<span class="pl-en">B</span> <span class="pl-mb">--retain-static-relocation</span></span></div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC79" class="react-file-line html-div" data-testid="code-cell" data-line-number="79" style="position:relative">Keep reloc information for compute-size, etc.</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC80" class="react-file-line html-div" data-testid="code-cell" data-line-number="80" style="position:relative">.<span class="pl-e">TP</span></div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC81" class="react-file-line html-div" data-testid="code-cell" data-line-number="81" style="position:relative"><span class="pl-mh">.<span class="pl-en">B</span> <span class="pl-mb">-b</span> <span class="pl-cce"><span class="pl-en">\fI</span></span><span class="pl-mi">file</span><span class="pl-cce"><span class="pl-en">\fP</span></span><span class="pl-mb">,</span> <span class="pl-mb">--boot</span> <span class="pl-mb"><span class="pl-cce"><span class="pl-en">\fI</span></span><span class="pl-mi">file</span><span class="pl-cce"><span class="pl-en">\fP</span></span></span></span></div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC82" class="react-file-line html-div" data-testid="code-cell" data-line-number="82" style="position:relative">Load boot code from <span class="pl-cce"><span class="pl-en">\fI</span></span><span class="pl-mi">file</span><span class="pl-cce"><span class="pl-en">\fP</span></span>.</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC83" class="react-file-line html-div" data-testid="code-cell" data-line-number="83" style="position:relative">.<span class="pl-e">TP</span></div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC84" class="react-file-line html-div" data-testid="code-cell" data-line-number="84" style="position:relative"><span class="pl-mh">.<span class="pl-en">B</span> <span class="pl-mb">--verbose</span></span></div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC85" class="react-file-line html-div" data-testid="code-cell" data-line-number="85" style="position:relative">Trace boot search process.</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC86" class="react-file-line html-div" data-testid="code-cell" data-line-number="86" style="position:relative">.<span class="pl-e">TP</span></div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC87" class="react-file-line html-div" data-testid="code-cell" data-line-number="87" style="position:relative"><span class="pl-mh">.<span class="pl-en">B</span> <span class="pl-mb">--version</span></span></div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC88" class="react-file-line html-div" data-testid="code-cell" data-line-number="88" style="position:relative">Print version and exit.</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC89" class="react-file-line html-div" data-testid="code-cell" data-line-number="89" style="position:relative">.<span class="pl-e">TP</span></div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC90" class="react-file-line html-div" data-testid="code-cell" data-line-number="90" style="position:relative"><span class="pl-mh">.<span class="pl-en">B</span> <span class="pl-mb">--help</span></span></div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC91" class="react-file-line html-div" data-testid="code-cell" data-line-number="91" style="position:relative">Print brief command-line help and exit.</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC92" class="react-file-line html-div" data-testid="code-cell" data-line-number="92" style="position:relative">.<span class="pl-e">TP</span></div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC93" class="react-file-line html-div" data-testid="code-cell" data-line-number="93" style="position:relative"><span class="pl-mh">.<span class="pl-en">B</span> <span class="pl-mb">--</span></span></div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC94" class="react-file-line html-div" data-testid="code-cell" data-line-number="94" style="position:relative">Pass all remaining command-line arguments through to Scheme.</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC95" class="react-file-line html-div" data-testid="code-cell" data-line-number="95" style="position:relative">.<span class="pl-e">LP</span></div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC96" class="react-file-line html-div" data-testid="code-cell" data-line-number="96" style="position:relative">The following options are recognized but cause the system to print an</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC97" class="react-file-line html-div" data-testid="code-cell" data-line-number="97" style="position:relative">error message and exit because saved heaps are not presently supported.</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC98" class="react-file-line html-div" data-testid="code-cell" data-line-number="98" style="position:relative">.<span class="pl-e">TP</span> <span class="pl-v">1in</span></div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC99" class="react-file-line html-div" data-testid="code-cell" data-line-number="99" style="position:relative"><span class="pl-mh">.<span class="pl-en">B</span> <span class="pl-mb">-h</span> <span class="pl-cce"><span class="pl-en">\fI</span></span><span class="pl-mi">file</span><span class="pl-cce"><span class="pl-en">\fP</span></span><span class="pl-mb">,</span> <span class="pl-mb">--heap</span> <span class="pl-mb"><span class="pl-cce"><span class="pl-en">\fI</span></span><span class="pl-mi">file</span><span class="pl-cce"><span class="pl-en">\fP</span></span></span></span></div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC100" class="react-file-line html-div" data-testid="code-cell" data-line-number="100" style="position:relative">.<span class="pl-e">TP</span></div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC101" class="react-file-line html-div" data-testid="code-cell" data-line-number="101" style="position:relative"><span class="pl-mh">.<span class="pl-en">B</span> <span class="pl-mb">-s[\fIlevel\fP]</span> <span class="pl-cce"><span class="pl-en">\fI</span></span><span class="pl-mi">file</span><span class="pl-cce"><span class="pl-en">\fP</span></span><span class="pl-mb">,</span> <span class="pl-mb">--saveheap[\fIlevel\fP]</span> <span class="pl-mb"><span class="pl-cce"><span class="pl-en">\fI</span></span><span class="pl-mi">file</span><span class="pl-cce"><span class="pl-en">\fP</span></span></span></span></div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC102" class="react-file-line html-div" data-testid="code-cell" data-line-number="102" style="position:relative">.<span class="pl-e">TP</span></div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC103" class="react-file-line html-div" data-testid="code-cell" data-line-number="103" style="position:relative"><span class="pl-mh">.<span class="pl-en">B</span> <span class="pl-mb">-c,</span> <span class="pl-mb">--compact</span></span></div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC104" class="react-file-line html-div" data-testid="code-cell" data-line-number="104" style="position:relative">.<span class="pl-e">LP</span></div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC105" class="react-file-line html-div" data-testid="code-cell" data-line-number="105" style="position:relative">Any remaining command-line arguments are treated as the names of</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC106" class="react-file-line html-div" data-testid="code-cell" data-line-number="106" style="position:relative">files to be loaded before Chez Scheme begins interacting with the</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC107" class="react-file-line html-div" data-testid="code-cell" data-line-number="107" style="position:relative">user (see COMMAND-LINE FILE ARGUMENTS), unless <span class="pl-cce"><span class="pl-en">\*(</span><span class="pl-v">lq</span></span>--script<span class="pl-cce"><span class="pl-en">\*(</span><span class="pl-v">rq</span></span> or</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC108" class="react-file-line html-div" data-testid="code-cell" data-line-number="108" style="position:relative"><span class="pl-cce"><span class="pl-en">\*(</span><span class="pl-v">lq</span></span>--program<span class="pl-cce"><span class="pl-en">\*(</span><span class="pl-v">rq</span></span> is present, in which case the remaining arguments</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC109" class="react-file-line html-div" data-testid="code-cell" data-line-number="109" style="position:relative">are made available to the script via the <span class="pl-cce"><span class="pl-en">\fI</span></span><span class="pl-mi">command-line</span><span class="pl-cce"><span class="pl-en">\fP</span></span> parameter</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC110" class="react-file-line html-div" data-testid="code-cell" data-line-number="110" style="position:relative">(see SCHEME SCRIPTS).</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC111" class="react-file-line html-div" data-testid="code-cell" data-line-number="111" style="position:relative"><span class="pl-mh">.<span class="pl-en">SH</span> WAITERS and CAFES</span></div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC112" class="react-file-line html-div" data-testid="code-cell" data-line-number="112" style="position:relative">.<span class="pl-e">LP</span></div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC113" class="react-file-line html-div" data-testid="code-cell" data-line-number="113" style="position:relative">Interaction of the system with the user is performed</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC114" class="react-file-line html-div" data-testid="code-cell" data-line-number="114" style="position:relative">by a Scheme program called a <span class="pl-cce"><span class="pl-en">\fI</span></span><span class="pl-mi">waiter</span><span class="pl-cce"><span class="pl-en">\fP</span></span>, running in a</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC115" class="react-file-line html-div" data-testid="code-cell" data-line-number="115" style="position:relative">program state called a <span class="pl-cce"><span class="pl-en">\fI</span></span><span class="pl-cce"><span class="pl-en">\*</span><span class="pl-v">c</span></span><span class="pl-cce"><span class="pl-en">\fP</span></span>. The waiter</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC116" class="react-file-line html-div" data-testid="code-cell" data-line-number="116" style="position:relative">merely prompts, reads, evaluates, prints and loops</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC117" class="react-file-line html-div" data-testid="code-cell" data-line-number="117" style="position:relative">back for more. It is possible to open up a chain of <span class="pl-cce"><span class="pl-en">\*</span><span class="pl-v">s</span></span></div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC118" class="react-file-line html-div" data-testid="code-cell" data-line-number="118" style="position:relative"><span class="pl-cce"><span class="pl-en">\*</span><span class="pl-v">c</span></span>s by invoking the <span class="pl-cce"><span class="pl-en">\fI</span></span><span class="pl-mi">new-cafe</span><span class="pl-cce"><span class="pl-en">\fP</span></span> procedure with no arguments.</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC119" class="react-file-line html-div" data-testid="code-cell" data-line-number="119" style="position:relative">New-cafe is also one of the options when an interrupt</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC120" class="react-file-line html-div" data-testid="code-cell" data-line-number="120" style="position:relative">occurs. Each <span class="pl-cce"><span class="pl-en">\*</span><span class="pl-v">c</span></span> has its own reset and exit procedures.</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC121" class="react-file-line html-div" data-testid="code-cell" data-line-number="121" style="position:relative">Exiting from one <span class="pl-cce"><span class="pl-en">\*</span><span class="pl-v">c</span></span> in the chain returns you to the next one</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC122" class="react-file-line html-div" data-testid="code-cell" data-line-number="122" style="position:relative">back, and so on, until the entire chain closes and you leave the</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC123" class="react-file-line html-div" data-testid="code-cell" data-line-number="123" style="position:relative">system altogether. Sometimes it is useful to</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC124" class="react-file-line html-div" data-testid="code-cell" data-line-number="124" style="position:relative">interrupt a long computation by typing the interrupt character,</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC125" class="react-file-line html-div" data-testid="code-cell" data-line-number="125" style="position:relative">enter a new <span class="pl-cce"><span class="pl-en">\*</span><span class="pl-v">c</span></span> to execute something (perhaps to check a status</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC126" class="react-file-line html-div" data-testid="code-cell" data-line-number="126" style="position:relative">variable set by computation), and exit the <span class="pl-cce"><span class="pl-en">\*</span><span class="pl-v">c</span></span> back to the old</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC127" class="react-file-line html-div" data-testid="code-cell" data-line-number="127" style="position:relative">computation.</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC128" class="react-file-line html-div" data-testid="code-cell" data-line-number="128" style="position:relative">.<span class="pl-e">LP</span></div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC129" class="react-file-line html-div" data-testid="code-cell" data-line-number="129" style="position:relative">You can tell what level you are at by the number of angle brackets</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC130" class="react-file-line html-div" data-testid="code-cell" data-line-number="130" style="position:relative">in the prompt, one for level one, two for level two, and so on.</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC131" class="react-file-line html-div" data-testid="code-cell" data-line-number="131" style="position:relative">Three angle brackets in the prompt means you would have to exit from</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC132" class="react-file-line html-div" data-testid="code-cell" data-line-number="132" style="position:relative">three <span class="pl-cce"><span class="pl-en">\*</span><span class="pl-v">c</span></span>s to get out of <span class="pl-cce"><span class="pl-en">\*</span><span class="pl-v">s</span></span>. If you wish to abort</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC133" class="react-file-line html-div" data-testid="code-cell" data-line-number="133" style="position:relative">from <span class="pl-cce"><span class="pl-en">\*</span><span class="pl-v">s</span></span> and you are several <span class="pl-cce"><span class="pl-en">\*</span><span class="pl-v">c</span></span>s deep, the procedure</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC134" class="react-file-line html-div" data-testid="code-cell" data-line-number="134" style="position:relative"><span class="pl-cce"><span class="pl-en">\fI</span></span><span class="pl-mi">abort</span><span class="pl-cce"><span class="pl-en">\fP</span></span> leaves the system directly.</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC135" class="react-file-line html-div" data-testid="code-cell" data-line-number="135" style="position:relative">.<span class="pl-e">LP</span></div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC136" class="react-file-line html-div" data-testid="code-cell" data-line-number="136" style="position:relative">You can exit the system by typing the end-of-file character</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC137" class="react-file-line html-div" data-testid="code-cell" data-line-number="137" style="position:relative">(normally Control-D) or by using the procedure <span class="pl-cce"><span class="pl-en">\fI</span></span><span class="pl-mi">exit</span><span class="pl-cce"><span class="pl-en">\fP</span></span>.</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC138" class="react-file-line html-div" data-testid="code-cell" data-line-number="138" style="position:relative">Typing Control-D is equivalent to (exit), (exit (void)), or</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC139" class="react-file-line html-div" data-testid="code-cell" data-line-number="139" style="position:relative">(exit 0), each of which is considered a <span class="pl-cce"><span class="pl-en">\*(</span><span class="pl-v">lq</span></span>normal exit<span class="pl-cce"><span class="pl-en">\*(</span><span class="pl-v">rq</span></span>.</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC140" class="react-file-line html-div" data-testid="code-cell" data-line-number="140" style="position:relative"><span class="pl-mh">.<span class="pl-en">SH</span> DEBUGGER</span></div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC141" class="react-file-line html-div" data-testid="code-cell" data-line-number="141" style="position:relative">Ordinarily, if an exception occurs during interactive use of the system,</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC142" class="react-file-line html-div" data-testid="code-cell" data-line-number="142" style="position:relative">the default exception handler displays</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC143" class="react-file-line html-div" data-testid="code-cell" data-line-number="143" style="position:relative">the condition with which the exception was raised, saves it for</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC144" class="react-file-line html-div" data-testid="code-cell" data-line-number="144" style="position:relative">possibly later use by the debugger, and prints the message</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC145" class="react-file-line html-div" data-testid="code-cell" data-line-number="145" style="position:relative">"type (debug) to enter the debugger."</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC146" class="react-file-line html-div" data-testid="code-cell" data-line-number="146" style="position:relative">Once in the debugger, the user has the option of inspecting the</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC147" class="react-file-line html-div" data-testid="code-cell" data-line-number="147" style="position:relative">raise continuation, i.e., the stack frames of the pending calls.</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC148" class="react-file-line html-div" data-testid="code-cell" data-line-number="148" style="position:relative">When an exception occurs in a script or top level program, or when the</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC149" class="react-file-line html-div" data-testid="code-cell" data-line-number="149" style="position:relative">standard input and/or output ports are redirected, the default exception</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC150" class="react-file-line html-div" data-testid="code-cell" data-line-number="150" style="position:relative">handler does not save the continuation of the exception and does not print</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC151" class="react-file-line html-div" data-testid="code-cell" data-line-number="151" style="position:relative">the "type (debug)" message.</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC152" class="react-file-line html-div" data-testid="code-cell" data-line-number="152" style="position:relative">.<span class="pl-e">LP</span></div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC153" class="react-file-line html-div" data-testid="code-cell" data-line-number="153" style="position:relative">If the parameter debug-on-exception is set to #t, however, the default</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC154" class="react-file-line html-div" data-testid="code-cell" data-line-number="154" style="position:relative">exception handler directly invokes debug, whether running interactively or</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC155" class="react-file-line html-div" data-testid="code-cell" data-line-number="155" style="position:relative">not, and even when running a script or top-level program.</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC156" class="react-file-line html-div" data-testid="code-cell" data-line-number="156" style="position:relative">The <span class="pl-cce"><span class="pl-en">\*(</span><span class="pl-v">lq</span></span>--debug-on-exception<span class="pl-cce"><span class="pl-en">\*(</span><span class="pl-v">rq</span></span> option may be used to set</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC157" class="react-file-line html-div" data-testid="code-cell" data-line-number="157" style="position:relative">debug-on-exception to #t from the command line, which is particularly</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC158" class="react-file-line html-div" data-testid="code-cell" data-line-number="158" style="position:relative">useful when debugging scripts or top-level programs run via the</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC159" class="react-file-line html-div" data-testid="code-cell" data-line-number="159" style="position:relative"><span class="pl-cce"><span class="pl-en">\*(</span><span class="pl-v">lq</span></span>--script<span class="pl-cce"><span class="pl-en">\*(</span><span class="pl-v">rq</span></span> or <span class="pl-cce"><span class="pl-en">\*(</span><span class="pl-v">lq</span></span>--program<span class="pl-cce"><span class="pl-en">\*(</span><span class="pl-v">rq</span></span> options.</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC160" class="react-file-line html-div" data-testid="code-cell" data-line-number="160" style="position:relative">.<span class="pl-e">LP</span></div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC161" class="react-file-line html-div" data-testid="code-cell" data-line-number="161" style="position:relative">None of this applies to exceptions raised with a non-serious (warning)</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC162" class="react-file-line html-div" data-testid="code-cell" data-line-number="162" style="position:relative">condition, for which the default exception handler simply displays the</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC163" class="react-file-line html-div" data-testid="code-cell" data-line-number="163" style="position:relative">condition and returns.</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC164" class="react-file-line html-div" data-testid="code-cell" data-line-number="164" style="position:relative"><span class="pl-mh">.<span class="pl-en">SH</span> KEYBOARD INTERRUPTS</span></div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC165" class="react-file-line html-div" data-testid="code-cell" data-line-number="165" style="position:relative">Running programs may be interrupted by typing the interrupt</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC166" class="react-file-line html-div" data-testid="code-cell" data-line-number="166" style="position:relative">character (normally Control-C). In response, the</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC167" class="react-file-line html-div" data-testid="code-cell" data-line-number="167" style="position:relative">system enters a break handler, which prompts for input with a</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC168" class="react-file-line html-div" data-testid="code-cell" data-line-number="168" style="position:relative"><span class="pl-cce"><span class="pl-en">\*(</span><span class="pl-v">lq</span></span>break><span class="pl-cce"><span class="pl-en">\*(</span><span class="pl-v">rq</span></span> prompt.</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC169" class="react-file-line html-div" data-testid="code-cell" data-line-number="169" style="position:relative">Several commands may be issued to the break handler, including</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC170" class="react-file-line html-div" data-testid="code-cell" data-line-number="170" style="position:relative"><span class="pl-cce"><span class="pl-en">\*(</span><span class="pl-v">lq</span></span>e<span class="pl-cce"><span class="pl-en">\*(</span><span class="pl-v">rq</span></span> to exit from the handler and continue,</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC171" class="react-file-line html-div" data-testid="code-cell" data-line-number="171" style="position:relative"><span class="pl-cce"><span class="pl-en">\*(</span><span class="pl-v">lq</span></span>r<span class="pl-cce"><span class="pl-en">\*(</span><span class="pl-v">rq</span></span> to reset to the current <span class="pl-cce"><span class="pl-en">\*</span><span class="pl-v">c</span></span>,</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC172" class="react-file-line html-div" data-testid="code-cell" data-line-number="172" style="position:relative"><span class="pl-cce"><span class="pl-en">\*(</span><span class="pl-v">lq</span></span>a<span class="pl-cce"><span class="pl-en">\*(</span><span class="pl-v">rq</span></span> to abort <span class="pl-cce"><span class="pl-en">\*</span><span class="pl-v">s</span></span>,</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC173" class="react-file-line html-div" data-testid="code-cell" data-line-number="173" style="position:relative"><span class="pl-cce"><span class="pl-en">\*(</span><span class="pl-v">lq</span></span>n<span class="pl-cce"><span class="pl-en">\*(</span><span class="pl-v">rq</span></span> to enter a new <span class="pl-cce"><span class="pl-en">\*</span><span class="pl-v">c</span></span>,</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC174" class="react-file-line html-div" data-testid="code-cell" data-line-number="174" style="position:relative"><span class="pl-cce"><span class="pl-en">\*(</span><span class="pl-v">lq</span></span>i<span class="pl-cce"><span class="pl-en">\*(</span><span class="pl-v">rq</span></span> to inspect the current continuation, and</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC175" class="react-file-line html-div" data-testid="code-cell" data-line-number="175" style="position:relative"><span class="pl-cce"><span class="pl-en">\*(</span><span class="pl-v">lq</span></span>s<span class="pl-cce"><span class="pl-en">\*(</span><span class="pl-v">rq</span></span> to display statistics about the interrupted program.</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC176" class="react-file-line html-div" data-testid="code-cell" data-line-number="176" style="position:relative">While typing an expression to the waiter, the interrupt character</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC177" class="react-file-line html-div" data-testid="code-cell" data-line-number="177" style="position:relative">simply resets to the current <span class="pl-cce"><span class="pl-en">\*</span><span class="pl-v">c</span></span>.</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC178" class="react-file-line html-div" data-testid="code-cell" data-line-number="178" style="position:relative"><span class="pl-mh">.<span class="pl-en">SH</span> EXPRESSION EDITOR</span></div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC179" class="react-file-line html-div" data-testid="code-cell" data-line-number="179" style="position:relative">.<span class="pl-e">LP</span></div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC180" class="react-file-line html-div" data-testid="code-cell" data-line-number="180" style="position:relative">When <span class="pl-cce"><span class="pl-en">\*</span><span class="pl-v">s</span></span> is used interactively in a </div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC181" class="react-file-line html-div" data-testid="code-cell" data-line-number="181" style="position:relative">shell window, the waiter's <span class="pl-cce"><span class="pl-en">\*(</span><span class="pl-v">lq</span></span>prompt and read<span class="pl-cce"><span class="pl-en">\*(</span><span class="pl-v">rq</span></span></div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC182" class="react-file-line html-div" data-testid="code-cell" data-line-number="182" style="position:relative">procedure employs an expression editor that permits entry and editing of</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC183" class="react-file-line html-div" data-testid="code-cell" data-line-number="183" style="position:relative">single- and multiple-line expressions, automatically indents expressions</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC184" class="react-file-line html-div" data-testid="code-cell" data-line-number="184" style="position:relative">as they are entered, and supports name-completion based on the identifiers</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC185" class="react-file-line html-div" data-testid="code-cell" data-line-number="185" style="position:relative">defined in the interactive environment.</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC186" class="react-file-line html-div" data-testid="code-cell" data-line-number="186" style="position:relative">The expression editor also maintains a history of expressions typed during</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC187" class="react-file-line html-div" data-testid="code-cell" data-line-number="187" style="position:relative">and across sessions and supports tcsh(1)-like history movement and search</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC188" class="react-file-line html-div" data-testid="code-cell" data-line-number="188" style="position:relative">commands.</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC189" class="react-file-line html-div" data-testid="code-cell" data-line-number="189" style="position:relative">Other editing commands include simple cursor movement via</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC190" class="react-file-line html-div" data-testid="code-cell" data-line-number="190" style="position:relative">arrow keys, deletion of characters via backspace and delete, and</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC191" class="react-file-line html-div" data-testid="code-cell" data-line-number="191" style="position:relative">movement, deletion, and other commands using mostly</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC192" class="react-file-line html-div" data-testid="code-cell" data-line-number="192" style="position:relative">emacs key bindings.</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC193" class="react-file-line html-div" data-testid="code-cell" data-line-number="193" style="position:relative">.<span class="pl-e">LP</span></div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC194" class="react-file-line html-div" data-testid="code-cell" data-line-number="194" style="position:relative">The expression editor does not run if the TERM environment variable is</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC195" class="react-file-line html-div" data-testid="code-cell" data-line-number="195" style="position:relative">not set, if the standard input or output files have been redirected, or</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC196" class="react-file-line html-div" data-testid="code-cell" data-line-number="196" style="position:relative">if the --eedisable command-line option has been used.</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC197" class="react-file-line html-div" data-testid="code-cell" data-line-number="197" style="position:relative">The history is saved across sessions, by default, in the file</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC198" class="react-file-line html-div" data-testid="code-cell" data-line-number="198" style="position:relative"><span class="pl-cce"><span class="pl-en">\*(</span><span class="pl-v">lq</span></span>$HOME/.chezscheme_history<span class="pl-cce"><span class="pl-en">\*(</span><span class="pl-v">rq</span></span>.</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC199" class="react-file-line html-div" data-testid="code-cell" data-line-number="199" style="position:relative">The --eehistory command-line option</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC200" class="react-file-line html-div" data-testid="code-cell" data-line-number="200" style="position:relative">can be used to specify a different</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC201" class="react-file-line html-div" data-testid="code-cell" data-line-number="201" style="position:relative">location for the history file or to disable the saving and restoring of</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC202" class="react-file-line html-div" data-testid="code-cell" data-line-number="202" style="position:relative">the history file.</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC203" class="react-file-line html-div" data-testid="code-cell" data-line-number="203" style="position:relative">.<span class="pl-e">LP</span></div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC204" class="react-file-line html-div" data-testid="code-cell" data-line-number="204" style="position:relative">Keys for nearly all printing characters (letters, digits, and special</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC205" class="react-file-line html-div" data-testid="code-cell" data-line-number="205" style="position:relative">characters) are <span class="pl-cce"><span class="pl-en">\*(</span><span class="pl-v">lq</span></span>self inserting<span class="pl-cce"><span class="pl-en">\*(</span><span class="pl-v">rq</span></span> by default.</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC206" class="react-file-line html-div" data-testid="code-cell" data-line-number="206" style="position:relative">The open parenthesis, close parenthesis, open bracket, and close bracket</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC207" class="react-file-line html-div" data-testid="code-cell" data-line-number="207" style="position:relative">keys are self inserting as well, but also cause the editor to <span class="pl-cce"><span class="pl-en">\*(</span><span class="pl-v">lq</span></span>flash<span class="pl-cce"><span class="pl-en">\*(</span><span class="pl-v">rq</span></span></div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC208" class="react-file-line html-div" data-testid="code-cell" data-line-number="208" style="position:relative">to the matching delimiter, if any.</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC209" class="react-file-line html-div" data-testid="code-cell" data-line-number="209" style="position:relative">Furthermore, when a close parenthesis or close bracket is typed, it is</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC210" class="react-file-line html-div" data-testid="code-cell" data-line-number="210" style="position:relative">automatically corrected to match the corresponding open delimiter, if any.</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC211" class="react-file-line html-div" data-testid="code-cell" data-line-number="211" style="position:relative">.<span class="pl-e">LP</span></div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC212" class="react-file-line html-div" data-testid="code-cell" data-line-number="212" style="position:relative">Key bindings for other keys and key sequences initially recognized by</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC213" class="react-file-line html-div" data-testid="code-cell" data-line-number="213" style="position:relative">the expression editor are given below, organized into groups by function.</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC214" class="react-file-line html-div" data-testid="code-cell" data-line-number="214" style="position:relative">Some keys or key sequences serve more than one purpose depending upon</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC215" class="react-file-line html-div" data-testid="code-cell" data-line-number="215" style="position:relative">context.</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC216" class="react-file-line html-div" data-testid="code-cell" data-line-number="216" style="position:relative">For example, tab is used both for identifier completion and for</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC217" class="react-file-line html-div" data-testid="code-cell" data-line-number="217" style="position:relative">indentation.</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC218" class="react-file-line html-div" data-testid="code-cell" data-line-number="218" style="position:relative">Such bindings are shown in each applicable functional group.</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC219" class="react-file-line html-div" data-testid="code-cell" data-line-number="219" style="position:relative">.<span class="pl-e">LP</span></div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC220" class="react-file-line html-div" data-testid="code-cell" data-line-number="220" style="position:relative">Multiple-key sequences are displayed with hyphens between the keys of</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC221" class="react-file-line html-div" data-testid="code-cell" data-line-number="221" style="position:relative">the sequences, but these hyphens should not be entered.</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC222" class="react-file-line html-div" data-testid="code-cell" data-line-number="222" style="position:relative">When two or more key sequences perform the same operation, the sequences</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC223" class="react-file-line html-div" data-testid="code-cell" data-line-number="223" style="position:relative">are shown separated by commas.</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC224" class="react-file-line html-div" data-testid="code-cell" data-line-number="224" style="position:relative">.<span class="pl-e">LP</span></div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC225" class="react-file-line html-div" data-testid="code-cell" data-line-number="225" style="position:relative">Newlines, acceptance, exiting, and redisplay:</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC226" class="react-file-line html-div" data-testid="code-cell" data-line-number="226" style="position:relative">.<span class="pl-e">LP</span></div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC227" class="react-file-line html-div" data-testid="code-cell" data-line-number="227" style="position:relative">.<span class="pl-e">ta</span> <span class="pl-cce"><span class="pl-en">\w</span><span class="pl-s">'{xxxxxxxxxxxxx}'</span></span><span class="pl-v">u+.25i</span></div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC228" class="react-file-line html-div" data-testid="code-cell" data-line-number="228" style="position:relative">enter, ^M accept balanced entry if used at end of entry;</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC229" class="react-file-line html-div" data-testid="code-cell" data-line-number="229" style="position:relative">.<span class="pl-e">br</span></div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC230" class="react-file-line html-div" data-testid="code-cell" data-line-number="230" style="position:relative"> else add a newline before the cursor and indent</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC231" class="react-file-line html-div" data-testid="code-cell" data-line-number="231" style="position:relative">.<span class="pl-e">br</span></div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC232" class="react-file-line html-div" data-testid="code-cell" data-line-number="232" style="position:relative">^J accept entry unconditionally</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC233" class="react-file-line html-div" data-testid="code-cell" data-line-number="233" style="position:relative">.<span class="pl-e">br</span></div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC234" class="react-file-line html-div" data-testid="code-cell" data-line-number="234" style="position:relative">^O insert newline after the cursor and indent</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC235" class="react-file-line html-div" data-testid="code-cell" data-line-number="235" style="position:relative">.<span class="pl-e">br</span></div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC236" class="react-file-line html-div" data-testid="code-cell" data-line-number="236" style="position:relative">^D exit from the waiter if entry is empty;</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC237" class="react-file-line html-div" data-testid="code-cell" data-line-number="237" style="position:relative">.<span class="pl-e">br</span></div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC238" class="react-file-line html-div" data-testid="code-cell" data-line-number="238" style="position:relative"> else delete character under cursor</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC239" class="react-file-line html-div" data-testid="code-cell" data-line-number="239" style="position:relative">.<span class="pl-e">br</span></div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC240" class="react-file-line html-div" data-testid="code-cell" data-line-number="240" style="position:relative">^Z suspend to shell if shell supports job control</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC241" class="react-file-line html-div" data-testid="code-cell" data-line-number="241" style="position:relative">.<span class="pl-e">br</span></div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC242" class="react-file-line html-div" data-testid="code-cell" data-line-number="242" style="position:relative">^L redisplay entry</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC243" class="react-file-line html-div" data-testid="code-cell" data-line-number="243" style="position:relative">.<span class="pl-e">br</span></div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC244" class="react-file-line html-div" data-testid="code-cell" data-line-number="244" style="position:relative">^L-^L clear screen and redisplay entry</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC245" class="react-file-line html-div" data-testid="code-cell" data-line-number="245" style="position:relative">.<span class="pl-e">br</span></div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC246" class="react-file-line html-div" data-testid="code-cell" data-line-number="246" style="position:relative">.<span class="pl-e">LP</span></div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC247" class="react-file-line html-div" data-testid="code-cell" data-line-number="247" style="position:relative">Basic movement and deletion:</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC248" class="react-file-line html-div" data-testid="code-cell" data-line-number="248" style="position:relative">.<span class="pl-e">LP</span></div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC249" class="react-file-line html-div" data-testid="code-cell" data-line-number="249" style="position:relative">.<span class="pl-e">ta</span> <span class="pl-cce"><span class="pl-en">\w</span><span class="pl-s">'{xxxxxxxxxxxxx}'</span></span><span class="pl-v">u+.25i</span></div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC250" class="react-file-line html-div" data-testid="code-cell" data-line-number="250" style="position:relative">left, ^B move cursor left</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC251" class="react-file-line html-div" data-testid="code-cell" data-line-number="251" style="position:relative">.<span class="pl-e">br</span></div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC252" class="react-file-line html-div" data-testid="code-cell" data-line-number="252" style="position:relative">right, ^F move cursor right</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC253" class="react-file-line html-div" data-testid="code-cell" data-line-number="253" style="position:relative">.<span class="pl-e">br</span></div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC254" class="react-file-line html-div" data-testid="code-cell" data-line-number="254" style="position:relative">up, ^P move cursor up; from top of unmodified entry,</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC255" class="react-file-line html-div" data-testid="code-cell" data-line-number="255" style="position:relative">.<span class="pl-e">br</span></div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC256" class="react-file-line html-div" data-testid="code-cell" data-line-number="256" style="position:relative"> move to preceding history entry.</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC257" class="react-file-line html-div" data-testid="code-cell" data-line-number="257" style="position:relative">.<span class="pl-e">br</span></div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC258" class="react-file-line html-div" data-testid="code-cell" data-line-number="258" style="position:relative">down, ^N move cursor down; from bottom of unmodified entry,</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC259" class="react-file-line html-div" data-testid="code-cell" data-line-number="259" style="position:relative">.<span class="pl-e">br</span></div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC260" class="react-file-line html-div" data-testid="code-cell" data-line-number="260" style="position:relative"> move to next history entry.</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC261" class="react-file-line html-div" data-testid="code-cell" data-line-number="261" style="position:relative">.<span class="pl-e">br</span></div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC262" class="react-file-line html-div" data-testid="code-cell" data-line-number="262" style="position:relative">^D delete character under cursor if entry not empty;</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC263" class="react-file-line html-div" data-testid="code-cell" data-line-number="263" style="position:relative">.<span class="pl-e">br</span></div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC264" class="react-file-line html-div" data-testid="code-cell" data-line-number="264" style="position:relative"> else exit from the waiter.</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC265" class="react-file-line html-div" data-testid="code-cell" data-line-number="265" style="position:relative">.<span class="pl-e">br</span></div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC266" class="react-file-line html-div" data-testid="code-cell" data-line-number="266" style="position:relative">backspace, ^H delete character before cursor</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC267" class="react-file-line html-div" data-testid="code-cell" data-line-number="267" style="position:relative">.<span class="pl-e">br</span></div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC268" class="react-file-line html-div" data-testid="code-cell" data-line-number="268" style="position:relative">.<span class="pl-e">br</span></div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC269" class="react-file-line html-div" data-testid="code-cell" data-line-number="269" style="position:relative">delete delete character under cursor</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC270" class="react-file-line html-div" data-testid="code-cell" data-line-number="270" style="position:relative">.<span class="pl-e">br</span></div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC271" class="react-file-line html-div" data-testid="code-cell" data-line-number="271" style="position:relative">.<span class="pl-e">LP</span></div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC272" class="react-file-line html-div" data-testid="code-cell" data-line-number="272" style="position:relative">Line movement and deletion:</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC273" class="react-file-line html-div" data-testid="code-cell" data-line-number="273" style="position:relative">.<span class="pl-e">LP</span></div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC274" class="react-file-line html-div" data-testid="code-cell" data-line-number="274" style="position:relative">.<span class="pl-e">ta</span> <span class="pl-cce"><span class="pl-en">\w</span><span class="pl-s">'{xxxxxxxxxxxxx}'</span></span><span class="pl-v">u+.25i</span></div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC275" class="react-file-line html-div" data-testid="code-cell" data-line-number="275" style="position:relative">home, ^A move cursor to beginning of line</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC276" class="react-file-line html-div" data-testid="code-cell" data-line-number="276" style="position:relative">.<span class="pl-e">br</span></div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC277" class="react-file-line html-div" data-testid="code-cell" data-line-number="277" style="position:relative">end, ^E move cursor to end of line</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC278" class="react-file-line html-div" data-testid="code-cell" data-line-number="278" style="position:relative">.<span class="pl-e">br</span></div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC279" class="react-file-line html-div" data-testid="code-cell" data-line-number="279" style="position:relative">^K, esc-k delete to end of line or, if cursor is at the end</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC280" class="react-file-line html-div" data-testid="code-cell" data-line-number="280" style="position:relative">.<span class="pl-e">br</span></div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC281" class="react-file-line html-div" data-testid="code-cell" data-line-number="281" style="position:relative"> of a line, join with next line</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC282" class="react-file-line html-div" data-testid="code-cell" data-line-number="282" style="position:relative">.<span class="pl-e">br</span></div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC283" class="react-file-line html-div" data-testid="code-cell" data-line-number="283" style="position:relative">^U delete contents of current line</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC284" class="react-file-line html-div" data-testid="code-cell" data-line-number="284" style="position:relative">.<span class="pl-e">LP</span></div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC285" class="react-file-line html-div" data-testid="code-cell" data-line-number="285" style="position:relative">When used on the first line of a multiline entry of which only the first line</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC286" class="react-file-line html-div" data-testid="code-cell" data-line-number="286" style="position:relative">is displayed, i.e., immediately after history movement, ^U deletes the</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC287" class="react-file-line html-div" data-testid="code-cell" data-line-number="287" style="position:relative">contents of the entire entry, like ^G (described below).</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC288" class="react-file-line html-div" data-testid="code-cell" data-line-number="288" style="position:relative">.<span class="pl-e">br</span></div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC289" class="react-file-line html-div" data-testid="code-cell" data-line-number="289" style="position:relative">.<span class="pl-e">LP</span></div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC290" class="react-file-line html-div" data-testid="code-cell" data-line-number="290" style="position:relative">Expression movement and deletion:</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC291" class="react-file-line html-div" data-testid="code-cell" data-line-number="291" style="position:relative">.<span class="pl-e">LP</span></div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC292" class="react-file-line html-div" data-testid="code-cell" data-line-number="292" style="position:relative">.<span class="pl-e">ta</span> <span class="pl-cce"><span class="pl-en">\w</span><span class="pl-s">'{xxxxxxxxxxxxx}'</span></span><span class="pl-v">u+.25i</span></div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC293" class="react-file-line html-div" data-testid="code-cell" data-line-number="293" style="position:relative">esc-^F move cursor to next expression</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC294" class="react-file-line html-div" data-testid="code-cell" data-line-number="294" style="position:relative">.<span class="pl-e">br</span></div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC295" class="react-file-line html-div" data-testid="code-cell" data-line-number="295" style="position:relative">esc-^B move cursor to preceding expression</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC296" class="react-file-line html-div" data-testid="code-cell" data-line-number="296" style="position:relative">.<span class="pl-e">br</span></div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC297" class="react-file-line html-div" data-testid="code-cell" data-line-number="297" style="position:relative">esc-] move cursor to matching delimiter</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC298" class="react-file-line html-div" data-testid="code-cell" data-line-number="298" style="position:relative">.<span class="pl-e">br</span></div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC299" class="react-file-line html-div" data-testid="code-cell" data-line-number="299" style="position:relative">^] flash cursor to matching delimiter</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC300" class="react-file-line html-div" data-testid="code-cell" data-line-number="300" style="position:relative">.<span class="pl-e">br</span></div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC301" class="react-file-line html-div" data-testid="code-cell" data-line-number="301" style="position:relative">esc-^K, esc-delete delete next expression</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC302" class="react-file-line html-div" data-testid="code-cell" data-line-number="302" style="position:relative">.<span class="pl-e">br</span></div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC303" class="react-file-line html-div" data-testid="code-cell" data-line-number="303" style="position:relative">esc-backspace, esc-^H delete preceding expression</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC304" class="react-file-line html-div" data-testid="code-cell" data-line-number="304" style="position:relative">.<span class="pl-e">br</span></div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC305" class="react-file-line html-div" data-testid="code-cell" data-line-number="305" style="position:relative">.<span class="pl-e">LP</span></div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC306" class="react-file-line html-div" data-testid="code-cell" data-line-number="306" style="position:relative">Entry movement and deletion:</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC307" class="react-file-line html-div" data-testid="code-cell" data-line-number="307" style="position:relative">.<span class="pl-e">LP</span></div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC308" class="react-file-line html-div" data-testid="code-cell" data-line-number="308" style="position:relative">.<span class="pl-e">ta</span> <span class="pl-cce"><span class="pl-en">\w</span><span class="pl-s">'{xxxxxxxxxxxxx}'</span></span><span class="pl-v">u+.25i</span></div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC309" class="react-file-line html-div" data-testid="code-cell" data-line-number="309" style="position:relative">esc-< move cursor to beginning of entry</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC310" class="react-file-line html-div" data-testid="code-cell" data-line-number="310" style="position:relative">.<span class="pl-e">br</span></div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC311" class="react-file-line html-div" data-testid="code-cell" data-line-number="311" style="position:relative">esc-> move cursor to end of entry</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC312" class="react-file-line html-div" data-testid="code-cell" data-line-number="312" style="position:relative">.<span class="pl-e">br</span></div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC313" class="react-file-line html-div" data-testid="code-cell" data-line-number="313" style="position:relative">^G delete current entry contents</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC314" class="react-file-line html-div" data-testid="code-cell" data-line-number="314" style="position:relative">.<span class="pl-e">br</span></div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC315" class="react-file-line html-div" data-testid="code-cell" data-line-number="315" style="position:relative">^C delete current entry contents; reset to end of history</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC316" class="react-file-line html-div" data-testid="code-cell" data-line-number="316" style="position:relative">.<span class="pl-e">br</span></div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC317" class="react-file-line html-div" data-testid="code-cell" data-line-number="317" style="position:relative">.<span class="pl-e">LP</span></div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC318" class="react-file-line html-div" data-testid="code-cell" data-line-number="318" style="position:relative">Indentation:</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC319" class="react-file-line html-div" data-testid="code-cell" data-line-number="319" style="position:relative">.<span class="pl-e">LP</span></div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC320" class="react-file-line html-div" data-testid="code-cell" data-line-number="320" style="position:relative">.<span class="pl-e">ta</span> <span class="pl-cce"><span class="pl-en">\w</span><span class="pl-s">'{xxxxxxxxxxxxx}'</span></span><span class="pl-v">u+.25i</span></div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC321" class="react-file-line html-div" data-testid="code-cell" data-line-number="321" style="position:relative">tab re-indent current line if identifier prefix not</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC322" class="react-file-line html-div" data-testid="code-cell" data-line-number="322" style="position:relative">.<span class="pl-e">br</span></div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC323" class="react-file-line html-div" data-testid="code-cell" data-line-number="323" style="position:relative"> just entered; else insert identifier completion</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC324" class="react-file-line html-div" data-testid="code-cell" data-line-number="324" style="position:relative">.<span class="pl-e">br</span></div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC325" class="react-file-line html-div" data-testid="code-cell" data-line-number="325" style="position:relative">esc-tab re-indent current line unconditionally</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC326" class="react-file-line html-div" data-testid="code-cell" data-line-number="326" style="position:relative">.<span class="pl-e">br</span></div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC327" class="react-file-line html-div" data-testid="code-cell" data-line-number="327" style="position:relative">esc-q, esc-Q, esc-^Q re-indent each line of entry</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC328" class="react-file-line html-div" data-testid="code-cell" data-line-number="328" style="position:relative">.<span class="pl-e">br</span></div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC329" class="react-file-line html-div" data-testid="code-cell" data-line-number="329" style="position:relative">.<span class="pl-e">LP</span></div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC330" class="react-file-line html-div" data-testid="code-cell" data-line-number="330" style="position:relative">Identifier completion:</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC331" class="react-file-line html-div" data-testid="code-cell" data-line-number="331" style="position:relative">.<span class="pl-e">LP</span></div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC332" class="react-file-line html-div" data-testid="code-cell" data-line-number="332" style="position:relative">.<span class="pl-e">ta</span> <span class="pl-cce"><span class="pl-en">\w</span><span class="pl-s">'{xxxxxxxxxxxxx}'</span></span><span class="pl-v">u+.25i</span></div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC333" class="react-file-line html-div" data-testid="code-cell" data-line-number="333" style="position:relative">tab insert identifier completion if just entered</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC334" class="react-file-line html-div" data-testid="code-cell" data-line-number="334" style="position:relative">.<span class="pl-e">br</span></div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC335" class="react-file-line html-div" data-testid="code-cell" data-line-number="335" style="position:relative"> identifier prefix; else re-indent current line</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC336" class="react-file-line html-div" data-testid="code-cell" data-line-number="336" style="position:relative">.<span class="pl-e">br</span></div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC337" class="react-file-line html-div" data-testid="code-cell" data-line-number="337" style="position:relative">tab-tab show possible identifier completions at end of</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC338" class="react-file-line html-div" data-testid="code-cell" data-line-number="338" style="position:relative">.<span class="pl-e">br</span></div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC339" class="react-file-line html-div" data-testid="code-cell" data-line-number="339" style="position:relative"> identifier just typed, else re-indent</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC340" class="react-file-line html-div" data-testid="code-cell" data-line-number="340" style="position:relative">.<span class="pl-e">br</span></div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC341" class="react-file-line html-div" data-testid="code-cell" data-line-number="341" style="position:relative">^R insert next identifier completion</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC342" class="react-file-line html-div" data-testid="code-cell" data-line-number="342" style="position:relative">.<span class="pl-e">LP</span></div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC343" class="react-file-line html-div" data-testid="code-cell" data-line-number="343" style="position:relative">If at end of existing identifier, i.e., not one just typed, the first tab</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC344" class="react-file-line html-div" data-testid="code-cell" data-line-number="344" style="position:relative">re-indents, the second tab inserts identifier completion, and the third</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC345" class="react-file-line html-div" data-testid="code-cell" data-line-number="345" style="position:relative">shows possible completions.</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC346" class="react-file-line html-div" data-testid="code-cell" data-line-number="346" style="position:relative">.<span class="pl-e">br</span></div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC347" class="react-file-line html-div" data-testid="code-cell" data-line-number="347" style="position:relative">.<span class="pl-e">LP</span></div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC348" class="react-file-line html-div" data-testid="code-cell" data-line-number="348" style="position:relative">History movement:</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC349" class="react-file-line html-div" data-testid="code-cell" data-line-number="349" style="position:relative">.<span class="pl-e">LP</span></div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC350" class="react-file-line html-div" data-testid="code-cell" data-line-number="350" style="position:relative">.<span class="pl-e">ta</span> <span class="pl-cce"><span class="pl-en">\w</span><span class="pl-s">'{xxxxxxxxxxxxx}'</span></span><span class="pl-v">u+.25i</span></div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC351" class="react-file-line html-div" data-testid="code-cell" data-line-number="351" style="position:relative">up, ^P move to preceding entry if at top of unmodified</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC352" class="react-file-line html-div" data-testid="code-cell" data-line-number="352" style="position:relative">.<span class="pl-e">br</span></div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC353" class="react-file-line html-div" data-testid="code-cell" data-line-number="353" style="position:relative"> entry; else move up within entry</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC354" class="react-file-line html-div" data-testid="code-cell" data-line-number="354" style="position:relative">.<span class="pl-e">br</span></div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC355" class="react-file-line html-div" data-testid="code-cell" data-line-number="355" style="position:relative">down, ^N move to next entry if at bottom of unmodified</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC356" class="react-file-line html-div" data-testid="code-cell" data-line-number="356" style="position:relative">.<span class="pl-e">br</span></div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC357" class="react-file-line html-div" data-testid="code-cell" data-line-number="357" style="position:relative"> entry; else move down within entry</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC358" class="react-file-line html-div" data-testid="code-cell" data-line-number="358" style="position:relative">.<span class="pl-e">br</span></div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC359" class="react-file-line html-div" data-testid="code-cell" data-line-number="359" style="position:relative">esc-up, esc-^P move to preceding entry from unmodified entry</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC360" class="react-file-line html-div" data-testid="code-cell" data-line-number="360" style="position:relative">.<span class="pl-e">br</span></div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC361" class="react-file-line html-div" data-testid="code-cell" data-line-number="361" style="position:relative">esc-down, esc-^N move to next entry from unmodified entry</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC362" class="react-file-line html-div" data-testid="code-cell" data-line-number="362" style="position:relative">.<span class="pl-e">br</span></div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC363" class="react-file-line html-div" data-testid="code-cell" data-line-number="363" style="position:relative">esc-p search backward through history for given prefix</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC364" class="react-file-line html-div" data-testid="code-cell" data-line-number="364" style="position:relative">.<span class="pl-e">br</span></div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC365" class="react-file-line html-div" data-testid="code-cell" data-line-number="365" style="position:relative">esc-n search forward through history for given prefix</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC366" class="react-file-line html-div" data-testid="code-cell" data-line-number="366" style="position:relative">.<span class="pl-e">br</span></div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC367" class="react-file-line html-div" data-testid="code-cell" data-line-number="367" style="position:relative">esc-P search backward through history for given string</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC368" class="react-file-line html-div" data-testid="code-cell" data-line-number="368" style="position:relative">.<span class="pl-e">br</span></div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC369" class="react-file-line html-div" data-testid="code-cell" data-line-number="369" style="position:relative">esc-N search forward through history for given string</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC370" class="react-file-line html-div" data-testid="code-cell" data-line-number="370" style="position:relative">.<span class="pl-e">br</span></div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC371" class="react-file-line html-div" data-testid="code-cell" data-line-number="371" style="position:relative">.<span class="pl-e">LP</span></div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC372" class="react-file-line html-div" data-testid="code-cell" data-line-number="372" style="position:relative">To search, enter a prefix or string followed by one of the search key</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC373" class="react-file-line html-div" data-testid="code-cell" data-line-number="373" style="position:relative">sequences.</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC374" class="react-file-line html-div" data-testid="code-cell" data-line-number="374" style="position:relative">Follow with additional search key sequences to search further backward or</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC375" class="react-file-line html-div" data-testid="code-cell" data-line-number="375" style="position:relative">forward in the history.</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC376" class="react-file-line html-div" data-testid="code-cell" data-line-number="376" style="position:relative">For example, enter <span class="pl-cce"><span class="pl-en">\*(</span><span class="pl-v">lq</span></span>(define<span class="pl-cce"><span class="pl-en">\*(</span><span class="pl-v">rq</span></span> followed by one or more esc-p key sequences</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC377" class="react-file-line html-div" data-testid="code-cell" data-line-number="377" style="position:relative">to search backward for entries that are definitions, or <span class="pl-cce"><span class="pl-en">\*(</span><span class="pl-v">lq</span></span>(define<span class="pl-cce"><span class="pl-en">\*(</span><span class="pl-v">rq</span></span></div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC378" class="react-file-line html-div" data-testid="code-cell" data-line-number="378" style="position:relative">followed by one or more esc-P key sequences for entries that contain</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC379" class="react-file-line html-div" data-testid="code-cell" data-line-number="379" style="position:relative">definitions.</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC380" class="react-file-line html-div" data-testid="code-cell" data-line-number="380" style="position:relative">.<span class="pl-e">br</span></div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC381" class="react-file-line html-div" data-testid="code-cell" data-line-number="381" style="position:relative">.<span class="pl-e">LP</span></div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC382" class="react-file-line html-div" data-testid="code-cell" data-line-number="382" style="position:relative">Word and page movement:</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC383" class="react-file-line html-div" data-testid="code-cell" data-line-number="383" style="position:relative">.<span class="pl-e">LP</span></div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC384" class="react-file-line html-div" data-testid="code-cell" data-line-number="384" style="position:relative">.<span class="pl-e">ta</span> <span class="pl-cce"><span class="pl-en">\w</span><span class="pl-s">'{xxxxxxxxxxxxx}'</span></span><span class="pl-v">u+.25i</span></div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC385" class="react-file-line html-div" data-testid="code-cell" data-line-number="385" style="position:relative">esc-f, esc-F move cursor to end of next word</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC386" class="react-file-line html-div" data-testid="code-cell" data-line-number="386" style="position:relative">.<span class="pl-e">br</span></div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC387" class="react-file-line html-div" data-testid="code-cell" data-line-number="387" style="position:relative">esc-b, esc-B move cursor to start of preceding word</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC388" class="react-file-line html-div" data-testid="code-cell" data-line-number="388" style="position:relative">.<span class="pl-e">br</span></div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC389" class="react-file-line html-div" data-testid="code-cell" data-line-number="389" style="position:relative">^X-[ move cursor up one screen page</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC390" class="react-file-line html-div" data-testid="code-cell" data-line-number="390" style="position:relative">.<span class="pl-e">br</span></div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC391" class="react-file-line html-div" data-testid="code-cell" data-line-number="391" style="position:relative">^X-] move cursor down one screen page</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC392" class="react-file-line html-div" data-testid="code-cell" data-line-number="392" style="position:relative">.<span class="pl-e">br</span></div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC393" class="react-file-line html-div" data-testid="code-cell" data-line-number="393" style="position:relative">.<span class="pl-e">LP</span></div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC394" class="react-file-line html-div" data-testid="code-cell" data-line-number="394" style="position:relative">Inserting saved text:</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC395" class="react-file-line html-div" data-testid="code-cell" data-line-number="395" style="position:relative">.<span class="pl-e">LP</span></div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC396" class="react-file-line html-div" data-testid="code-cell" data-line-number="396" style="position:relative">.<span class="pl-e">ta</span> <span class="pl-cce"><span class="pl-en">\w</span><span class="pl-s">'{xxxxxxxxxxxxx}'</span></span><span class="pl-v">u+.25i</span></div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC397" class="react-file-line html-div" data-testid="code-cell" data-line-number="397" style="position:relative">^Y insert most recently deleted text</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC398" class="react-file-line html-div" data-testid="code-cell" data-line-number="398" style="position:relative">.<span class="pl-e">br</span></div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC399" class="react-file-line html-div" data-testid="code-cell" data-line-number="399" style="position:relative">^V insert contents of window selection/paste buffer</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC400" class="react-file-line html-div" data-testid="code-cell" data-line-number="400" style="position:relative">.<span class="pl-e">br</span></div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC401" class="react-file-line html-div" data-testid="code-cell" data-line-number="401" style="position:relative">.<span class="pl-e">LP</span></div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC402" class="react-file-line html-div" data-testid="code-cell" data-line-number="402" style="position:relative">Mark operations:</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC403" class="react-file-line html-div" data-testid="code-cell" data-line-number="403" style="position:relative">.<span class="pl-e">LP</span></div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC404" class="react-file-line html-div" data-testid="code-cell" data-line-number="404" style="position:relative">.<span class="pl-e">ta</span> <span class="pl-cce"><span class="pl-en">\w</span><span class="pl-s">'{xxxxxxxxxxxxx}'</span></span><span class="pl-v">u+.25i</span></div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC405" class="react-file-line html-div" data-testid="code-cell" data-line-number="405" style="position:relative">^@, ^space, ^^ set mark to current cursor position</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC406" class="react-file-line html-div" data-testid="code-cell" data-line-number="406" style="position:relative">.<span class="pl-e">br</span></div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC407" class="react-file-line html-div" data-testid="code-cell" data-line-number="407" style="position:relative">^X-^X move cursor to mark, leave mark at old cursor</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC408" class="react-file-line html-div" data-testid="code-cell" data-line-number="408" style="position:relative">.<span class="pl-e">br</span></div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC409" class="react-file-line html-div" data-testid="code-cell" data-line-number="409" style="position:relative">^W delete between current cursor position and mark</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC410" class="react-file-line html-div" data-testid="code-cell" data-line-number="410" style="position:relative">.<span class="pl-e">br</span></div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC411" class="react-file-line html-div" data-testid="code-cell" data-line-number="411" style="position:relative">.<span class="pl-e">LP</span></div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC412" class="react-file-line html-div" data-testid="code-cell" data-line-number="412" style="position:relative">Command repetition:</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC413" class="react-file-line html-div" data-testid="code-cell" data-line-number="413" style="position:relative">.<span class="pl-e">LP</span></div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC414" class="react-file-line html-div" data-testid="code-cell" data-line-number="414" style="position:relative">.<span class="pl-e">ta</span> <span class="pl-cce"><span class="pl-en">\w</span><span class="pl-s">'{xxxxxxxxxxxxx}'</span></span><span class="pl-v">u+.25i</span></div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC415" class="react-file-line html-div" data-testid="code-cell" data-line-number="415" style="position:relative">esc-^U repeat next command four times</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC416" class="react-file-line html-div" data-testid="code-cell" data-line-number="416" style="position:relative">.<span class="pl-e">br</span></div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC417" class="react-file-line html-div" data-testid="code-cell" data-line-number="417" style="position:relative">esc-^U-<span class="pl-cce"><span class="pl-en">\fI</span></span><span class="pl-mi">n</span><span class="pl-cce"><span class="pl-en">\fP</span></span> repeat next command <span class="pl-cce"><span class="pl-en">\fI</span></span><span class="pl-mi">n</span><span class="pl-cce"><span class="pl-en">\fP</span></span> times</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC418" class="react-file-line html-div" data-testid="code-cell" data-line-number="418" style="position:relative">.<span class="pl-e">br</span></div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC419" class="react-file-line html-div" data-testid="code-cell" data-line-number="419" style="position:relative"><span class="pl-mh">.<span class="pl-en">SH</span> TOP-LEVEL ENVIRONMENT SEMANTICS</span></div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC420" class="react-file-line html-div" data-testid="code-cell" data-line-number="420" style="position:relative">.<span class="pl-e">LP</span></div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC421" class="react-file-line html-div" data-testid="code-cell" data-line-number="421" style="position:relative">Upon startup, the <span class="pl-cce"><span class="pl-en">\*(</span><span class="pl-v">lq</span></span>interaction environment<span class="pl-cce"><span class="pl-en">\*(</span><span class="pl-v">rq</span></span> used to</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC422" class="react-file-line html-div" data-testid="code-cell" data-line-number="422" style="position:relative">hold the top-level bindings for user-defined variables and other</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC423" class="react-file-line html-div" data-testid="code-cell" data-line-number="423" style="position:relative">identifiers contains an initial set of bindings, some standard</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC424" class="react-file-line html-div" data-testid="code-cell" data-line-number="424" style="position:relative">and some specific to <span class="pl-cce"><span class="pl-en">\*</span><span class="pl-v">s</span></span>.</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC425" class="react-file-line html-div" data-testid="code-cell" data-line-number="425" style="position:relative">Any initial identifier binding may be replaced by redefining</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC426" class="react-file-line html-div" data-testid="code-cell" data-line-number="426" style="position:relative">the identifier with a normal top-level definition.</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC427" class="react-file-line html-div" data-testid="code-cell" data-line-number="427" style="position:relative">For example, the initial binding for <span class="pl-cce"><span class="pl-en">\fI</span></span><span class="pl-mi">cons</span><span class="pl-cce"><span class="pl-en">\fP</span></span> can be replaced</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC428" class="react-file-line html-div" data-testid="code-cell" data-line-number="428" style="position:relative">with one that performs a "reverse cons" as follows.</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC429" class="react-file-line html-div" data-testid="code-cell" data-line-number="429" style="position:relative">.<span class="pl-e">br</span></div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC430" class="react-file-line html-div" data-testid="code-cell" data-line-number="430" style="position:relative">.<span class="pl-e">sp</span></div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC431" class="react-file-line html-div" data-testid="code-cell" data-line-number="431" style="position:relative">(define cons (lambda (x y) (import scheme) (cons y x)))</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC432" class="react-file-line html-div" data-testid="code-cell" data-line-number="432" style="position:relative">.<span class="pl-e">br</span></div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC433" class="react-file-line html-div" data-testid="code-cell" data-line-number="433" style="position:relative">.<span class="pl-e">sp</span></div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC434" class="react-file-line html-div" data-testid="code-cell" data-line-number="434" style="position:relative">Code entered into the REPL or loaded from a file prior to this</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC435" class="react-file-line html-div" data-testid="code-cell" data-line-number="435" style="position:relative">point will still use the original binding for <span class="pl-cce"><span class="pl-en">\fI</span></span><span class="pl-mi">cons</span><span class="pl-cce"><span class="pl-en">\fP</span></span>.</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC436" class="react-file-line html-div" data-testid="code-cell" data-line-number="436" style="position:relative">If you want it to use the new binding, you must reenter or reload</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC437" class="react-file-line html-div" data-testid="code-cell" data-line-number="437" style="position:relative">the code.</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC438" class="react-file-line html-div" data-testid="code-cell" data-line-number="438" style="position:relative">Furthermore, the initial bindings for variables like <span class="pl-cce"><span class="pl-en">\fI</span></span><span class="pl-mi">cons</span><span class="pl-cce"><span class="pl-en">\fP</span></span> are immutable,</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC439" class="react-file-line html-div" data-testid="code-cell" data-line-number="439" style="position:relative">so you cannot assign one (e.g., via set! or trace) without first defining</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC440" class="react-file-line html-div" data-testid="code-cell" data-line-number="440" style="position:relative">it.</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC441" class="react-file-line html-div" data-testid="code-cell" data-line-number="441" style="position:relative">This allows the system to check to make sure it receives the expected</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC442" class="react-file-line html-div" data-testid="code-cell" data-line-number="442" style="position:relative">two arguments at compile time and generate inline code to allocate</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC443" class="react-file-line html-div" data-testid="code-cell" data-line-number="443" style="position:relative">the pair.</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC444" class="react-file-line html-div" data-testid="code-cell" data-line-number="444" style="position:relative">This is not the case if <span class="pl-cce"><span class="pl-en">\fI</span></span><span class="pl-mi">cons</span><span class="pl-cce"><span class="pl-en">\fP</span></span> is redefined, even if redefined to have</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC445" class="react-file-line html-div" data-testid="code-cell" data-line-number="445" style="position:relative">the same value, since its value can be changed via set! at any time</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC446" class="react-file-line html-div" data-testid="code-cell" data-line-number="446" style="position:relative">during a program run.</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC447" class="react-file-line html-div" data-testid="code-cell" data-line-number="447" style="position:relative"><span class="pl-mh">.<span class="pl-en">SH</span> COMMAND-LINE FILE ARGUMENTS</span></div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC448" class="react-file-line html-div" data-testid="code-cell" data-line-number="448" style="position:relative">.<span class="pl-e">LP</span></div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC449" class="react-file-line html-div" data-testid="code-cell" data-line-number="449" style="position:relative">In the normal mode of operation,</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC450" class="react-file-line html-div" data-testid="code-cell" data-line-number="450" style="position:relative">the file names on the command line (except for the arguments</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC451" class="react-file-line html-div" data-testid="code-cell" data-line-number="451" style="position:relative">to the various command-line options) are</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC452" class="react-file-line html-div" data-testid="code-cell" data-line-number="452" style="position:relative">loaded before <span class="pl-cce"><span class="pl-en">\*</span><span class="pl-v">s</span></span> begins interacting with the user. Each of the</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC453" class="react-file-line html-div" data-testid="code-cell" data-line-number="453" style="position:relative">expressions in the loaded files is executed just as if it were</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC454" class="react-file-line html-div" data-testid="code-cell" data-line-number="454" style="position:relative">typed by the user in response to a prompt. If you wish to load a</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC455" class="react-file-line html-div" data-testid="code-cell" data-line-number="455" style="position:relative">set of definitions each time, consider setting up a shell script to</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC456" class="react-file-line html-div" data-testid="code-cell" data-line-number="456" style="position:relative">load the file <span class="pl-cce"><span class="pl-en">\*(</span><span class="pl-v">lq</span></span>.schemerc<span class="pl-cce"><span class="pl-en">\*(</span><span class="pl-v">rq</span></span> from your home directory:</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC457" class="react-file-line html-div" data-testid="code-cell" data-line-number="457" style="position:relative">.<span class="pl-e">br</span></div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC458" class="react-file-line html-div" data-testid="code-cell" data-line-number="458" style="position:relative">.<span class="pl-e">sp</span></div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC459" class="react-file-line html-div" data-testid="code-cell" data-line-number="459" style="position:relative"> {InstallSchemeName} ${HOME}/.schemerc $*</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC460" class="react-file-line html-div" data-testid="code-cell" data-line-number="460" style="position:relative">.<span class="pl-e">sp</span></div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC461" class="react-file-line html-div" data-testid="code-cell" data-line-number="461" style="position:relative">.<span class="pl-e">br</span></div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC462" class="react-file-line html-div" data-testid="code-cell" data-line-number="462" style="position:relative">If you have a </div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC463" class="react-file-line html-div" data-testid="code-cell" data-line-number="463" style="position:relative">substantial number of definitions to load each time, it might</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC464" class="react-file-line html-div" data-testid="code-cell" data-line-number="464" style="position:relative">be worthwhile to compile the .schemerc file (that is, compile</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC465" class="react-file-line html-div" data-testid="code-cell" data-line-number="465" style="position:relative">the definitions and name the resulting object file .schemerc).</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC466" class="react-file-line html-div" data-testid="code-cell" data-line-number="466" style="position:relative">.<span class="pl-e">LP</span></div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC467" class="react-file-line html-div" data-testid="code-cell" data-line-number="467" style="position:relative">Typically, a Scheme programmer creates a source file of</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC468" class="react-file-line html-div" data-testid="code-cell" data-line-number="468" style="position:relative">definitions and other Scheme forms using an editor such as</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC469" class="react-file-line html-div" data-testid="code-cell" data-line-number="469" style="position:relative"><span class="pl-cce"><span class="pl-en">\fI</span></span><span class="pl-mi">vi</span><span class="pl-cce"><span class="pl-en">\fP</span></span>(1) or <span class="pl-cce"><span class="pl-en">\fI</span></span><span class="pl-mi">emacs</span><span class="pl-cce"><span class="pl-en">\fP</span></span>(1)</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC470" class="react-file-line html-div" data-testid="code-cell" data-line-number="470" style="position:relative">and loads the file into Scheme to test them. The</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC471" class="react-file-line html-div" data-testid="code-cell" data-line-number="471" style="position:relative">conventional filename extension for <span class="pl-cce"><span class="pl-en">\*</span><span class="pl-v">s</span></span> source files</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC472" class="react-file-line html-div" data-testid="code-cell" data-line-number="472" style="position:relative">is <span class="pl-cce"><span class="pl-en">\fI</span></span>.<span class="pl-mi">ss</span><span class="pl-cce"><span class="pl-en">\fP</span></span>. Such a file may be loaded during a session by typing</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC473" class="react-file-line html-div" data-testid="code-cell" data-line-number="473" style="position:relative">(load <span class="pl-cce"><span class="pl-en">\*(</span><span class="pl-v">lq</span></span><span class="pl-cce"><span class="pl-en">\fI</span></span><span class="pl-mi">filename</span><span class="pl-cce"><span class="pl-en">\fP</span></span><span class="pl-cce"><span class="pl-en">\*(</span><span class="pl-v">rq</span></span>), or by specifying the filename on</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC474" class="react-file-line html-div" data-testid="code-cell" data-line-number="474" style="position:relative">the command line as mentioned above. Any expression that may be</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC475" class="react-file-line html-div" data-testid="code-cell" data-line-number="475" style="position:relative">typed interactively may be placed in a file to be loaded.</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC476" class="react-file-line html-div" data-testid="code-cell" data-line-number="476" style="position:relative"><span class="pl-mh">.<span class="pl-en">SH</span> SCHEME SCRIPTS</span></div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC477" class="react-file-line html-div" data-testid="code-cell" data-line-number="477" style="position:relative">.<span class="pl-e">LP</span></div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC478" class="react-file-line html-div" data-testid="code-cell" data-line-number="478" style="position:relative">When the <span class="pl-cce"><span class="pl-en">\*(</span><span class="pl-v">lq</span></span>--script<span class="pl-cce"><span class="pl-en">\*(</span><span class="pl-v">rq</span></span> option is used, the named file is</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC479" class="react-file-line html-div" data-testid="code-cell" data-line-number="479" style="position:relative">treated as a Scheme shell script, and the script name and remaining</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC480" class="react-file-line html-div" data-testid="code-cell" data-line-number="480" style="position:relative">command-line arguments are made available via the parameter</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC481" class="react-file-line html-div" data-testid="code-cell" data-line-number="481" style="position:relative"><span class="pl-cce"><span class="pl-en">\*(</span><span class="pl-v">lq</span></span>command-line<span class="pl-cce"><span class="pl-en">\*(</span><span class="pl-v">rq</span></span>.</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC482" class="react-file-line html-div" data-testid="code-cell" data-line-number="482" style="position:relative">To support executable shell scripts, the system ignores the first</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC483" class="react-file-line html-div" data-testid="code-cell" data-line-number="483" style="position:relative">line of a loaded script if it begins with #! followed by</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC484" class="react-file-line html-div" data-testid="code-cell" data-line-number="484" style="position:relative">a space or forward slash.</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC485" class="react-file-line html-div" data-testid="code-cell" data-line-number="485" style="position:relative">For example, the following script prints its command-line arguments.</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC486" class="react-file-line html-div" data-testid="code-cell" data-line-number="486" style="position:relative">.<span class="pl-e">br</span></div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC487" class="react-file-line html-div" data-testid="code-cell" data-line-number="487" style="position:relative">.<span class="pl-e">sp</span></div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC488" class="react-file-line html-div" data-testid="code-cell" data-line-number="488" style="position:relative">#! {InstallBin}/{InstallSchemeName} --script</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC489" class="react-file-line html-div" data-testid="code-cell" data-line-number="489" style="position:relative">.<span class="pl-e">br</span></div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC490" class="react-file-line html-div" data-testid="code-cell" data-line-number="490" style="position:relative">(for-each</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC491" class="react-file-line html-div" data-testid="code-cell" data-line-number="491" style="position:relative">.<span class="pl-e">br</span></div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC492" class="react-file-line html-div" data-testid="code-cell" data-line-number="492" style="position:relative"> (lambda (x) (display x) (newline))</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC493" class="react-file-line html-div" data-testid="code-cell" data-line-number="493" style="position:relative">.<span class="pl-e">br</span></div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC494" class="react-file-line html-div" data-testid="code-cell" data-line-number="494" style="position:relative"> (cdr (command-line)))</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC495" class="react-file-line html-div" data-testid="code-cell" data-line-number="495" style="position:relative"><span class="pl-mh">.<span class="pl-en">SH</span> RNRS TOP-LEVEL PROGRAMS</span></div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC496" class="react-file-line html-div" data-testid="code-cell" data-line-number="496" style="position:relative">.<span class="pl-e">LP</span></div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC497" class="react-file-line html-div" data-testid="code-cell" data-line-number="497" style="position:relative">The <span class="pl-cce"><span class="pl-en">\*(</span><span class="pl-v">lq</span></span>--program<span class="pl-cce"><span class="pl-en">\*(</span><span class="pl-v">rq</span></span> option is like the <span class="pl-cce"><span class="pl-en">\*(</span><span class="pl-v">lq</span></span>--script<span class="pl-cce"><span class="pl-en">\*(</span><span class="pl-v">rq</span></span> option</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC498" class="react-file-line html-div" data-testid="code-cell" data-line-number="498" style="position:relative">except that the script file is treated as an RNRS top-level program.</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC499" class="react-file-line html-div" data-testid="code-cell" data-line-number="499" style="position:relative">The following RNRS top-level program prints its command-line arguments, as</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC500" class="react-file-line html-div" data-testid="code-cell" data-line-number="500" style="position:relative">with the script above.</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC501" class="react-file-line html-div" data-testid="code-cell" data-line-number="501" style="position:relative">.<span class="pl-e">br</span></div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC502" class="react-file-line html-div" data-testid="code-cell" data-line-number="502" style="position:relative">.<span class="pl-e">sp</span></div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC503" class="react-file-line html-div" data-testid="code-cell" data-line-number="503" style="position:relative">#! {InstallBin}/{InstallSchemeName} --program</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC504" class="react-file-line html-div" data-testid="code-cell" data-line-number="504" style="position:relative">.<span class="pl-e">br</span></div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC505" class="react-file-line html-div" data-testid="code-cell" data-line-number="505" style="position:relative">(import (rnrs))</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC506" class="react-file-line html-div" data-testid="code-cell" data-line-number="506" style="position:relative">.<span class="pl-e">br</span></div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC507" class="react-file-line html-div" data-testid="code-cell" data-line-number="507" style="position:relative">(for-each</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC508" class="react-file-line html-div" data-testid="code-cell" data-line-number="508" style="position:relative">.<span class="pl-e">br</span></div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC509" class="react-file-line html-div" data-testid="code-cell" data-line-number="509" style="position:relative"> (lambda (x) (display x) (newline))</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC510" class="react-file-line html-div" data-testid="code-cell" data-line-number="510" style="position:relative">.<span class="pl-e">br</span></div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC511" class="react-file-line html-div" data-testid="code-cell" data-line-number="511" style="position:relative"> (cdr (command-line)))</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC512" class="react-file-line html-div" data-testid="code-cell" data-line-number="512" style="position:relative">.<span class="pl-e">LP</span></div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC513" class="react-file-line html-div" data-testid="code-cell" data-line-number="513" style="position:relative"><span class="pl-cce"><span class="pl-en">\*(</span><span class="pl-v">lq</span></span>scheme-script<span class="pl-cce"><span class="pl-en">\*(</span><span class="pl-v">rq</span></span> may be used in place of <span class="pl-cce"><span class="pl-en">\*(</span><span class="pl-v">lq</span></span>scheme --program<span class="pl-cce"><span class="pl-en">\*(</span><span class="pl-v">rq</span></span>,</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC514" class="react-file-line html-div" data-testid="code-cell" data-line-number="514" style="position:relative">possibly prefixed by <span class="pl-cce"><span class="pl-en">\*(</span><span class="pl-v">lq</span></span>/usr/bin/env<span class="pl-cce"><span class="pl-en">\*(</span><span class="pl-v">rq</span></span> as suggested in the nonnormative</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC515" class="react-file-line html-div" data-testid="code-cell" data-line-number="515" style="position:relative">R6RS appendix on running top-level programs as scripts, i.e., the first line</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC516" class="react-file-line html-div" data-testid="code-cell" data-line-number="516" style="position:relative">of the top-level program may be replaced with the following.</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC517" class="react-file-line html-div" data-testid="code-cell" data-line-number="517" style="position:relative">.<span class="pl-e">br</span></div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC518" class="react-file-line html-div" data-testid="code-cell" data-line-number="518" style="position:relative">.<span class="pl-e">sp</span></div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC519" class="react-file-line html-div" data-testid="code-cell" data-line-number="519" style="position:relative">#! /usr/bin/env {InstallScriptName}</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC520" class="react-file-line html-div" data-testid="code-cell" data-line-number="520" style="position:relative">.<span class="pl-e">br</span></div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC521" class="react-file-line html-div" data-testid="code-cell" data-line-number="521" style="position:relative">.<span class="pl-e">LP</span></div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC522" class="react-file-line html-div" data-testid="code-cell" data-line-number="522" style="position:relative">If a top-level program depends on libraries other than those built into</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC523" class="react-file-line html-div" data-testid="code-cell" data-line-number="523" style="position:relative"><span class="pl-cce"><span class="pl-en">\*</span><span class="pl-v">s</span></span>, the <span class="pl-cce"><span class="pl-en">\*(</span><span class="pl-v">lq</span></span>--libdirs<span class="pl-cce"><span class="pl-en">\*(</span><span class="pl-v">rq</span></span> option can be used to specify</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC524" class="react-file-line html-div" data-testid="code-cell" data-line-number="524" style="position:relative">which source and object directories to search.</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC525" class="react-file-line html-div" data-testid="code-cell" data-line-number="525" style="position:relative">Similarly, if a library upon which a top-level program depends has an</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC526" class="react-file-line html-div" data-testid="code-cell" data-line-number="526" style="position:relative">extension other than one of the standard extensions, the</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC527" class="react-file-line html-div" data-testid="code-cell" data-line-number="527" style="position:relative"><span class="pl-cce"><span class="pl-en">\*(</span><span class="pl-v">lq</span></span>--libexts<span class="pl-cce"><span class="pl-en">\*(</span><span class="pl-v">rq</span></span> option can be used to specify additional extensions</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC528" class="react-file-line html-div" data-testid="code-cell" data-line-number="528" style="position:relative">to search.</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC529" class="react-file-line html-div" data-testid="code-cell" data-line-number="529" style="position:relative">.<span class="pl-e">LP</span></div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC530" class="react-file-line html-div" data-testid="code-cell" data-line-number="530" style="position:relative">These options set the corresponding <span class="pl-cce"><span class="pl-en">\*</span><span class="pl-v">s</span></span> parameters</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC531" class="react-file-line html-div" data-testid="code-cell" data-line-number="531" style="position:relative">library-directories and library-extensions.</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC532" class="react-file-line html-div" data-testid="code-cell" data-line-number="532" style="position:relative">The values of both parameters are lists of pairs of strings.</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC533" class="react-file-line html-div" data-testid="code-cell" data-line-number="533" style="position:relative">The first string in each library-directories pair identifies a</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC534" class="react-file-line html-div" data-testid="code-cell" data-line-number="534" style="position:relative">source-file root directory, and the second identifies the corresponding</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC535" class="react-file-line html-div" data-testid="code-cell" data-line-number="535" style="position:relative">object-file root directory.</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC536" class="react-file-line html-div" data-testid="code-cell" data-line-number="536" style="position:relative">Similarly, the first string in each library-extensions pair</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC537" class="react-file-line html-div" data-testid="code-cell" data-line-number="537" style="position:relative">identifies a source-file extension, and the second identifies the</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC538" class="react-file-line html-div" data-testid="code-cell" data-line-number="538" style="position:relative">corresponding object-file extension.</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC539" class="react-file-line html-div" data-testid="code-cell" data-line-number="539" style="position:relative">The full path of a library source or object file consists of the source or</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC540" class="react-file-line html-div" data-testid="code-cell" data-line-number="540" style="position:relative">object root followed by the components of the library name prefixed by</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC541" class="react-file-line html-div" data-testid="code-cell" data-line-number="541" style="position:relative">slashes, with the library extension added on the end.</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC542" class="react-file-line html-div" data-testid="code-cell" data-line-number="542" style="position:relative">For example, for root /usr/lib/scheme, library name</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC543" class="react-file-line html-div" data-testid="code-cell" data-line-number="543" style="position:relative">(app lib1), and extension .sls, the full path is</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC544" class="react-file-line html-div" data-testid="code-cell" data-line-number="544" style="position:relative">/usr/lib/scheme/app/lib1.sls.</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC545" class="react-file-line html-div" data-testid="code-cell" data-line-number="545" style="position:relative">.<span class="pl-e">LP</span></div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC546" class="react-file-line html-div" data-testid="code-cell" data-line-number="546" style="position:relative">The format of the arguments to <span class="pl-cce"><span class="pl-en">\*(</span><span class="pl-v">lq</span></span>--libdirs<span class="pl-cce"><span class="pl-en">\*(</span><span class="pl-v">rq</span></span> and</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC547" class="react-file-line html-div" data-testid="code-cell" data-line-number="547" style="position:relative"><span class="pl-cce"><span class="pl-en">\*(</span><span class="pl-v">lq</span></span>--libexts<span class="pl-cce"><span class="pl-en">\*(</span><span class="pl-v">rq</span></span> is the same:</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC548" class="react-file-line html-div" data-testid="code-cell" data-line-number="548" style="position:relative">a sequence of substrings separated by a single separator</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC549" class="react-file-line html-div" data-testid="code-cell" data-line-number="549" style="position:relative">character.</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC550" class="react-file-line html-div" data-testid="code-cell" data-line-number="550" style="position:relative">The separator character is a colon (:), except under Windows where it is a</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC551" class="react-file-line html-div" data-testid="code-cell" data-line-number="551" style="position:relative">semi-colon (;).</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC552" class="react-file-line html-div" data-testid="code-cell" data-line-number="552" style="position:relative">Between single separators, the source and object strings, if both are</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC553" class="react-file-line html-div" data-testid="code-cell" data-line-number="553" style="position:relative">specified, are separated by two separator characters.</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC554" class="react-file-line html-div" data-testid="code-cell" data-line-number="554" style="position:relative">If a single separator character appears at the end of the string,</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC555" class="react-file-line html-div" data-testid="code-cell" data-line-number="555" style="position:relative">the specified pairs are added to the existing list; otherwise, the</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC556" class="react-file-line html-div" data-testid="code-cell" data-line-number="556" style="position:relative">specified pairs replace the existing list.</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC557" class="react-file-line html-div" data-testid="code-cell" data-line-number="557" style="position:relative">The parameters are set after all boot files have been loaded.</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC558" class="react-file-line html-div" data-testid="code-cell" data-line-number="558" style="position:relative">.<span class="pl-e">LP</span></div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC559" class="react-file-line html-div" data-testid="code-cell" data-line-number="559" style="position:relative">If multiple <span class="pl-cce"><span class="pl-en">\*(</span><span class="pl-v">lq</span></span>--libdirs<span class="pl-cce"><span class="pl-en">\*(</span><span class="pl-v">rq</span></span> options appear, all but the final</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC560" class="react-file-line html-div" data-testid="code-cell" data-line-number="560" style="position:relative">one are ignored, and if </div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC561" class="react-file-line html-div" data-testid="code-cell" data-line-number="561" style="position:relative">If multiple <span class="pl-cce"><span class="pl-en">\*(</span><span class="pl-v">lq</span></span>--libexts<span class="pl-cce"><span class="pl-en">\*(</span><span class="pl-v">rq</span></span> options appear, all but the final</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC562" class="react-file-line html-div" data-testid="code-cell" data-line-number="562" style="position:relative">are ignored.</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC563" class="react-file-line html-div" data-testid="code-cell" data-line-number="563" style="position:relative">If no <span class="pl-cce"><span class="pl-en">\*(</span><span class="pl-v">lq</span></span>--libdirs<span class="pl-cce"><span class="pl-en">\*(</span><span class="pl-v">rq</span></span> option appears and the CHEZSCHEMELIBDIRS</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC564" class="react-file-line html-div" data-testid="code-cell" data-line-number="564" style="position:relative">environment variable is set, the string value of CHEZSCHEMELIBDIRS is</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC565" class="react-file-line html-div" data-testid="code-cell" data-line-number="565" style="position:relative">treated as if it were specified by a <span class="pl-cce"><span class="pl-en">\*(</span><span class="pl-v">lq</span></span>--libdirs<span class="pl-cce"><span class="pl-en">\*(</span><span class="pl-v">rq</span></span> option.</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC566" class="react-file-line html-div" data-testid="code-cell" data-line-number="566" style="position:relative">Similarly, if no <span class="pl-cce"><span class="pl-en">\*(</span><span class="pl-v">lq</span></span>--libexts<span class="pl-cce"><span class="pl-en">\*(</span><span class="pl-v">rq</span></span> option appears and the CHEZSCHEMELIBEXTS</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC567" class="react-file-line html-div" data-testid="code-cell" data-line-number="567" style="position:relative">environment variable is set, the string value of CHEZSCHEMELIBEXTS is</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC568" class="react-file-line html-div" data-testid="code-cell" data-line-number="568" style="position:relative">treated as if it were specified by a <span class="pl-cce"><span class="pl-en">\*(</span><span class="pl-v">lq</span></span>--libexts<span class="pl-cce"><span class="pl-en">\*(</span><span class="pl-v">rq</span></span> option.</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC569" class="react-file-line html-div" data-testid="code-cell" data-line-number="569" style="position:relative">.<span class="pl-e">LP</span></div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC570" class="react-file-line html-div" data-testid="code-cell" data-line-number="570" style="position:relative">The library-directories and library-extensions</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC571" class="react-file-line html-div" data-testid="code-cell" data-line-number="571" style="position:relative">parameters set by these options are consulted by the expander when it</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC572" class="react-file-line html-div" data-testid="code-cell" data-line-number="572" style="position:relative">encounters an import for a library that has not previously been defined or</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC573" class="react-file-line html-div" data-testid="code-cell" data-line-number="573" style="position:relative">loaded.</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC574" class="react-file-line html-div" data-testid="code-cell" data-line-number="574" style="position:relative">The expander first constructs a partial name from the list of components in the</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC575" class="react-file-line html-div" data-testid="code-cell" data-line-number="575" style="position:relative">library name, e.g., <span class="pl-cce"><span class="pl-en">\*(</span><span class="pl-v">lq</span></span>a/b<span class="pl-cce"><span class="pl-en">\*(</span><span class="pl-v">rq</span></span> for library (a b).</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC576" class="react-file-line html-div" data-testid="code-cell" data-line-number="576" style="position:relative">It then searches for the partial name in each pair</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC577" class="react-file-line html-div" data-testid="code-cell" data-line-number="577" style="position:relative">of root directories, in order, trying each of the source extensions then</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC578" class="react-file-line html-div" data-testid="code-cell" data-line-number="578" style="position:relative">each of the object extensions in turn before moving onto the next pair of</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC579" class="react-file-line html-div" data-testid="code-cell" data-line-number="579" style="position:relative">root directories.</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC580" class="react-file-line html-div" data-testid="code-cell" data-line-number="580" style="position:relative">If the partial name is an absolute pathname, e.g., <span class="pl-cce"><span class="pl-en">\*(</span><span class="pl-v">lq</span></span>~/.myappinit<span class="pl-cce"><span class="pl-en">\*(</span><span class="pl-v">rq</span></span></div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC581" class="react-file-line html-div" data-testid="code-cell" data-line-number="581" style="position:relative">for a library named (~/.myappinit), only the specified absolute</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC582" class="react-file-line html-div" data-testid="code-cell" data-line-number="582" style="position:relative">path is searched, first with each source extension, then with each object</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC583" class="react-file-line html-div" data-testid="code-cell" data-line-number="583" style="position:relative">extension.</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC584" class="react-file-line html-div" data-testid="code-cell" data-line-number="584" style="position:relative">If the expander finds both a source file and its corresponding object</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC585" class="react-file-line html-div" data-testid="code-cell" data-line-number="585" style="position:relative">file, and the object file is not older than the source file, the</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC586" class="react-file-line html-div" data-testid="code-cell" data-line-number="586" style="position:relative">expander loads the object file.</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC587" class="react-file-line html-div" data-testid="code-cell" data-line-number="587" style="position:relative">If the object file does not exist, if the object file is older, or</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC588" class="react-file-line html-div" data-testid="code-cell" data-line-number="588" style="position:relative">if after loading the object file, the expander determines it was</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC589" class="react-file-line html-div" data-testid="code-cell" data-line-number="589" style="position:relative">built using a library or include file that has changed, the source</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC590" class="react-file-line html-div" data-testid="code-cell" data-line-number="590" style="position:relative">file is loaded or compiled, depending on the value of the parameter</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC591" class="react-file-line html-div" data-testid="code-cell" data-line-number="591" style="position:relative">compile-imported-libraries.</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC592" class="react-file-line html-div" data-testid="code-cell" data-line-number="592" style="position:relative">If compile-imported-libraries</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC593" class="react-file-line html-div" data-testid="code-cell" data-line-number="593" style="position:relative">is set to #t, the expander</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC594" class="react-file-line html-div" data-testid="code-cell" data-line-number="594" style="position:relative">compiles the library via compile-library (which is described below).</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC595" class="react-file-line html-div" data-testid="code-cell" data-line-number="595" style="position:relative">Otherwise, the expander loads the source file.</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC596" class="react-file-line html-div" data-testid="code-cell" data-line-number="596" style="position:relative">(Loading the source file actually causes the code to be compiled,</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC597" class="react-file-line html-div" data-testid="code-cell" data-line-number="597" style="position:relative">assuming the default value of current-eval, but the compiled</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC598" class="react-file-line html-div" data-testid="code-cell" data-line-number="598" style="position:relative">code is not saved to an object file.)</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC599" class="react-file-line html-div" data-testid="code-cell" data-line-number="599" style="position:relative">An exception is raised during this process if a</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC600" class="react-file-line html-div" data-testid="code-cell" data-line-number="600" style="position:relative">source or object file exists but is not readable or if an object</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC601" class="react-file-line html-div" data-testid="code-cell" data-line-number="601" style="position:relative">file cannot be created.</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC602" class="react-file-line html-div" data-testid="code-cell" data-line-number="602" style="position:relative">.<span class="pl-e">LP</span></div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC603" class="react-file-line html-div" data-testid="code-cell" data-line-number="603" style="position:relative">The search process used by the expander when processing an import</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC604" class="react-file-line html-div" data-testid="code-cell" data-line-number="604" style="position:relative">for a library that has not yet been loaded can be monitored by</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC605" class="react-file-line html-div" data-testid="code-cell" data-line-number="605" style="position:relative">setting the parameter import-notify to #t.</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC606" class="react-file-line html-div" data-testid="code-cell" data-line-number="606" style="position:relative">This parameter can be set from the command line via the</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC607" class="react-file-line html-div" data-testid="code-cell" data-line-number="607" style="position:relative"><span class="pl-cce"><span class="pl-en">\*(</span><span class="pl-v">lq</span></span>--import-notify<span class="pl-cce"><span class="pl-en">\*(</span><span class="pl-v">rq</span></span> command-line option.</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC608" class="react-file-line html-div" data-testid="code-cell" data-line-number="608" style="position:relative"><span class="pl-mh">.<span class="pl-en">SH</span> OPTIMIZE LEVELS</span></div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC609" class="react-file-line html-div" data-testid="code-cell" data-line-number="609" style="position:relative">The <span class="pl-cce"><span class="pl-en">\*(</span><span class="pl-v">lq</span></span>--optimize-level<span class="pl-cce"><span class="pl-en">\*(</span><span class="pl-v">rq</span></span> option sets the initial value of the</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC610" class="react-file-line html-div" data-testid="code-cell" data-line-number="610" style="position:relative"><span class="pl-cce"><span class="pl-en">\*</span><span class="pl-v">s</span></span> optimize-level parameter to 0, 1, 2, or 3.</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC611" class="react-file-line html-div" data-testid="code-cell" data-line-number="611" style="position:relative">The value is 0 by default.</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC612" class="react-file-line html-div" data-testid="code-cell" data-line-number="612" style="position:relative">.<span class="pl-e">LP</span></div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC613" class="react-file-line html-div" data-testid="code-cell" data-line-number="613" style="position:relative">At optimize-levels 0, 1, and 2, code generated by the compiler is</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC614" class="react-file-line html-div" data-testid="code-cell" data-line-number="614" style="position:relative"><span class="pl-cce"><span class="pl-en">\fI</span></span><span class="pl-mi">safe</span><span class="pl-cce"><span class="pl-en">\fP</span></span>, i.e., generates full type and bounds checks.</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC615" class="react-file-line html-div" data-testid="code-cell" data-line-number="615" style="position:relative">At optimize-level 3, code generated by the compiler is <span class="pl-cce"><span class="pl-en">\fI</span></span><span class="pl-mi">unsafe</span><span class="pl-cce"><span class="pl-en">\fP</span></span>,</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC616" class="react-file-line html-div" data-testid="code-cell" data-line-number="616" style="position:relative">i.e., may omit these checks.</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC617" class="react-file-line html-div" data-testid="code-cell" data-line-number="617" style="position:relative">Unsafe code is usually faster, but optimize-level 3 should be used only</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC618" class="react-file-line html-div" data-testid="code-cell" data-line-number="618" style="position:relative">for well-tested code since the absence of type and bounds checks may</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC619" class="react-file-line html-div" data-testid="code-cell" data-line-number="619" style="position:relative">result in invalid memory references, corruption of the Scheme heap (which</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC620" class="react-file-line html-div" data-testid="code-cell" data-line-number="620" style="position:relative">may cause seemingly unrelated problems later), system crashes, or other</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC621" class="react-file-line html-div" data-testid="code-cell" data-line-number="621" style="position:relative">undesirable behaviors.</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC622" class="react-file-line html-div" data-testid="code-cell" data-line-number="622" style="position:relative">.<span class="pl-e">LP</span></div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC623" class="react-file-line html-div" data-testid="code-cell" data-line-number="623" style="position:relative">At present, there is no direct difference other than safety among</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC624" class="react-file-line html-div" data-testid="code-cell" data-line-number="624" style="position:relative">optimize levels.</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC625" class="react-file-line html-div" data-testid="code-cell" data-line-number="625" style="position:relative"><span class="pl-mh">.<span class="pl-en">SH</span> COMPILING FILES</span></div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC626" class="react-file-line html-div" data-testid="code-cell" data-line-number="626" style="position:relative">.<span class="pl-e">LP</span></div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC627" class="react-file-line html-div" data-testid="code-cell" data-line-number="627" style="position:relative"><span class="pl-cce"><span class="pl-en">\*</span><span class="pl-v">s</span></span> compiles source expressions as it sees them. In</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC628" class="react-file-line html-div" data-testid="code-cell" data-line-number="628" style="position:relative">order to speed loading of a large file, the file may be compiled</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC629" class="react-file-line html-div" data-testid="code-cell" data-line-number="629" style="position:relative">with the output placed in an object file.</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC630" class="react-file-line html-div" data-testid="code-cell" data-line-number="630" style="position:relative">(compile-file <span class="pl-cce"><span class="pl-en">\*(</span><span class="pl-v">lq</span></span>foo<span class="pl-cce"><span class="pl-en">\*(</span><span class="pl-v">rq</span></span>) compiles the expressions in the file</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC631" class="react-file-line html-div" data-testid="code-cell" data-line-number="631" style="position:relative"><span class="pl-cce"><span class="pl-en">\*(</span><span class="pl-v">lq</span></span>foo.ss<span class="pl-cce"><span class="pl-en">\*(</span><span class="pl-v">rq</span></span> and places the resulting object code on the file</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC632" class="react-file-line html-div" data-testid="code-cell" data-line-number="632" style="position:relative"><span class="pl-cce"><span class="pl-en">\*(</span><span class="pl-v">lq</span></span>foo.so<span class="pl-cce"><span class="pl-en">\*(</span><span class="pl-v">rq</span></span>. Loading a pre-compiled file is no different from</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC633" class="react-file-line html-div" data-testid="code-cell" data-line-number="633" style="position:relative">loading the source file, except that loading is faster since</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC634" class="react-file-line html-div" data-testid="code-cell" data-line-number="634" style="position:relative">compilation is already done. </div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC635" class="react-file-line html-div" data-testid="code-cell" data-line-number="635" style="position:relative">.<span class="pl-e">LP</span></div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC636" class="react-file-line html-div" data-testid="code-cell" data-line-number="636" style="position:relative">To compile a program to be run with --program, use</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC637" class="react-file-line html-div" data-testid="code-cell" data-line-number="637" style="position:relative">compile-program instead of compile-file.</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC638" class="react-file-line html-div" data-testid="code-cell" data-line-number="638" style="position:relative">compile-program preserves the first line unchanged, if it begins</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC639" class="react-file-line html-div" data-testid="code-cell" data-line-number="639" style="position:relative">with #! followed by a forward slash or space.</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC640" class="react-file-line html-div" data-testid="code-cell" data-line-number="640" style="position:relative">Also, while compile-file compresses the resulting object file,</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC641" class="react-file-line html-div" data-testid="code-cell" data-line-number="641" style="position:relative">compile-program does not do so if the #! line is present, so</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC642" class="react-file-line html-div" data-testid="code-cell" data-line-number="642" style="position:relative">it can be recognized by the shell's script executor.</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC643" class="react-file-line html-div" data-testid="code-cell" data-line-number="643" style="position:relative">Any libraries upon which the top-level program depends, other than</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC644" class="react-file-line html-div" data-testid="code-cell" data-line-number="644" style="position:relative">built-in libraries, must be compiled first via compile-file</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC645" class="react-file-line html-div" data-testid="code-cell" data-line-number="645" style="position:relative">or compile-library.</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC646" class="react-file-line html-div" data-testid="code-cell" data-line-number="646" style="position:relative">This can be done manually or by setting the parameter</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC647" class="react-file-line html-div" data-testid="code-cell" data-line-number="647" style="position:relative">compile-imported-libraries to #t before compiling the program.</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC648" class="react-file-line html-div" data-testid="code-cell" data-line-number="648" style="position:relative">.<span class="pl-e">LP</span></div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC649" class="react-file-line html-div" data-testid="code-cell" data-line-number="649" style="position:relative">To compile a script to be run with --script, use</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC650" class="react-file-line html-div" data-testid="code-cell" data-line-number="650" style="position:relative">compile-script instead of compile-file.</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC651" class="react-file-line html-div" data-testid="code-cell" data-line-number="651" style="position:relative">compile-script is like compile-program, but, like compile-file, implements</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC652" class="react-file-line html-div" data-testid="code-cell" data-line-number="652" style="position:relative">the interactive top-level semantics rather than the RNRS top-level</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC653" class="react-file-line html-div" data-testid="code-cell" data-line-number="653" style="position:relative">program semantics.</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC654" class="react-file-line html-div" data-testid="code-cell" data-line-number="654" style="position:relative"><span class="pl-mh">.<span class="pl-en">SH</span> BOOT and HEAP FILES</span></div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC655" class="react-file-line html-div" data-testid="code-cell" data-line-number="655" style="position:relative">.<span class="pl-e">LP</span></div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC656" class="react-file-line html-div" data-testid="code-cell" data-line-number="656" style="position:relative">When <span class="pl-cce"><span class="pl-en">\*</span><span class="pl-v">s</span></span> is run, it looks for one or more boot files to load.</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC657" class="react-file-line html-div" data-testid="code-cell" data-line-number="657" style="position:relative">Boot files contain the compiled Scheme code that implements most of</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC658" class="react-file-line html-div" data-testid="code-cell" data-line-number="658" style="position:relative">the Scheme system, including the interpreter, compiler, and most</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC659" class="react-file-line html-div" data-testid="code-cell" data-line-number="659" style="position:relative">libraries.</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC660" class="react-file-line html-div" data-testid="code-cell" data-line-number="660" style="position:relative">Boot files may be specified explicitly on the command</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC661" class="react-file-line html-div" data-testid="code-cell" data-line-number="661" style="position:relative">line via <span class="pl-cce"><span class="pl-en">\*(</span><span class="pl-v">lq</span></span>-b<span class="pl-cce"><span class="pl-en">\*(</span><span class="pl-v">rq</span></span> options or implicitly.</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC662" class="react-file-line html-div" data-testid="code-cell" data-line-number="662" style="position:relative">In the simplest case, no <span class="pl-cce"><span class="pl-en">\*(</span><span class="pl-v">lq</span></span>-b<span class="pl-cce"><span class="pl-en">\*(</span><span class="pl-v">rq</span></span> options</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC663" class="react-file-line html-div" data-testid="code-cell" data-line-number="663" style="position:relative">are given and the necessary boot files are loaded</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC664" class="react-file-line html-div" data-testid="code-cell" data-line-number="664" style="position:relative">automatically based on the name of the executable.</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC665" class="react-file-line html-div" data-testid="code-cell" data-line-number="665" style="position:relative">For example, if the executable name is <span class="pl-cce"><span class="pl-en">\*(</span><span class="pl-v">lq</span></span>myapp<span class="pl-cce"><span class="pl-en">\*(</span><span class="pl-v">rq</span></span>, the</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC666" class="react-file-line html-div" data-testid="code-cell" data-line-number="666" style="position:relative">system looks for <span class="pl-cce"><span class="pl-en">\*(</span><span class="pl-v">lq</span></span>myapp.boot<span class="pl-cce"><span class="pl-en">\*(</span><span class="pl-v">rq</span></span> in a set of standard</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC667" class="react-file-line html-div" data-testid="code-cell" data-line-number="667" style="position:relative">directories.</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC668" class="react-file-line html-div" data-testid="code-cell" data-line-number="668" style="position:relative">It also looks for and loads any subordinate boot files required</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC669" class="react-file-line html-div" data-testid="code-cell" data-line-number="669" style="position:relative">by <span class="pl-cce"><span class="pl-en">\*(</span><span class="pl-v">lq</span></span>myapp.boot<span class="pl-cce"><span class="pl-en">\*(</span><span class="pl-v">rq</span></span>.</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC670" class="react-file-line html-div" data-testid="code-cell" data-line-number="670" style="position:relative">Subordinate boot files are also loaded automatically for the</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC671" class="react-file-line html-div" data-testid="code-cell" data-line-number="671" style="position:relative">first boot file explicitly specified via the command line.</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC672" class="react-file-line html-div" data-testid="code-cell" data-line-number="672" style="position:relative">When multiple boot files are specified via the command line and boot each</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC673" class="react-file-line html-div" data-testid="code-cell" data-line-number="673" style="position:relative">file must be listed before those that depend upon it.</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC674" class="react-file-line html-div" data-testid="code-cell" data-line-number="674" style="position:relative">.<span class="pl-e">LP</span></div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC675" class="react-file-line html-div" data-testid="code-cell" data-line-number="675" style="position:relative">The <span class="pl-cce"><span class="pl-en">\*(</span><span class="pl-v">lq</span></span>--verbose<span class="pl-cce"><span class="pl-en">\*(</span><span class="pl-v">rq</span></span> option may be used to trace the boot file</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC676" class="react-file-line html-div" data-testid="code-cell" data-line-number="676" style="position:relative">searching process and must appear before any boot arguments</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC677" class="react-file-line html-div" data-testid="code-cell" data-line-number="677" style="position:relative">for which search tracing is desired.</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC678" class="react-file-line html-div" data-testid="code-cell" data-line-number="678" style="position:relative">.<span class="pl-e">LP</span></div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC679" class="react-file-line html-div" data-testid="code-cell" data-line-number="679" style="position:relative">Ordinarily, the search for boot files is limited to a set of</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC680" class="react-file-line html-div" data-testid="code-cell" data-line-number="680" style="position:relative">default installation directories, but this may be overridden by setting</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC681" class="react-file-line html-div" data-testid="code-cell" data-line-number="681" style="position:relative">the environment variable SCHEMEHEAPDIRS.</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC682" class="react-file-line html-div" data-testid="code-cell" data-line-number="682" style="position:relative">SCHEMEHEAPDIRS should be a colon-separated list of directories, listed in</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC683" class="react-file-line html-div" data-testid="code-cell" data-line-number="683" style="position:relative">the order in which they should be searched.</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC684" class="react-file-line html-div" data-testid="code-cell" data-line-number="684" style="position:relative">Within each directory, the two-character escape sequence <span class="pl-cce"><span class="pl-en">\*(</span><span class="pl-v">lq</span></span>%v<span class="pl-cce"><span class="pl-en">\*(</span><span class="pl-v">rq</span></span></div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC685" class="react-file-line html-div" data-testid="code-cell" data-line-number="685" style="position:relative">is replaced by the current version, and the two-character escape sequence</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC686" class="react-file-line html-div" data-testid="code-cell" data-line-number="686" style="position:relative"><span class="pl-cce"><span class="pl-en">\*(</span><span class="pl-v">lq</span></span>%m<span class="pl-cce"><span class="pl-en">\*(</span><span class="pl-v">rq</span></span> is replaced by the machine type.</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC687" class="react-file-line html-div" data-testid="code-cell" data-line-number="687" style="position:relative">A percent followed by any other character is replaced by the second</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC688" class="react-file-line html-div" data-testid="code-cell" data-line-number="688" style="position:relative">character; in particular, <span class="pl-cce"><span class="pl-en">\*(</span><span class="pl-v">lq</span></span>%%<span class="pl-cce"><span class="pl-en">\*(</span><span class="pl-v">rq</span></span> is replaced by <span class="pl-cce"><span class="pl-en">\*(</span><span class="pl-v">lq</span></span>%<span class="pl-cce"><span class="pl-en">\*(</span><span class="pl-v">rq</span></span>, and</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC689" class="react-file-line html-div" data-testid="code-cell" data-line-number="689" style="position:relative"><span class="pl-cce"><span class="pl-en">\*(</span><span class="pl-v">lq</span></span>%:<span class="pl-cce"><span class="pl-en">\*(</span><span class="pl-v">rq</span></span> is replaced by <span class="pl-cce"><span class="pl-en">\*(</span><span class="pl-v">lq</span></span>:<span class="pl-cce"><span class="pl-en">\*(</span><span class="pl-v">rq</span></span>.</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC690" class="react-file-line html-div" data-testid="code-cell" data-line-number="690" style="position:relative">If SCHEMEHEAPDIRS ends in a non-escaped colon, the default directories are</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC691" class="react-file-line html-div" data-testid="code-cell" data-line-number="691" style="position:relative">searched after those in SCHEMEHEAPDIRS; otherwise, only those listed in</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC692" class="react-file-line html-div" data-testid="code-cell" data-line-number="692" style="position:relative">SCHEMEHEAPDIRS are searched.</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC693" class="react-file-line html-div" data-testid="code-cell" data-line-number="693" style="position:relative">Under Windows, semi-colons are used in place of colons.</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC694" class="react-file-line html-div" data-testid="code-cell" data-line-number="694" style="position:relative">.<span class="pl-e">LP</span></div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC695" class="react-file-line html-div" data-testid="code-cell" data-line-number="695" style="position:relative">Boot files consist of a header followed by ordinary compiled code and</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC696" class="react-file-line html-div" data-testid="code-cell" data-line-number="696" style="position:relative">may be created with make-boot-file.</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC697" class="react-file-line html-div" data-testid="code-cell" data-line-number="697" style="position:relative">For example,</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC698" class="react-file-line html-div" data-testid="code-cell" data-line-number="698" style="position:relative">.<span class="pl-e">br</span></div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC699" class="react-file-line html-div" data-testid="code-cell" data-line-number="699" style="position:relative">.<span class="pl-e">sp</span></div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC700" class="react-file-line html-div" data-testid="code-cell" data-line-number="700" style="position:relative"> (make-boot-file "myapp.boot" '("petite")</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC701" class="react-file-line html-div" data-testid="code-cell" data-line-number="701" style="position:relative"> "myapp1.so" "myapp2.so")</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC702" class="react-file-line html-div" data-testid="code-cell" data-line-number="702" style="position:relative">.<span class="pl-e">sp</span></div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC703" class="react-file-line html-div" data-testid="code-cell" data-line-number="703" style="position:relative">.<span class="pl-e">br</span></div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC704" class="react-file-line html-div" data-testid="code-cell" data-line-number="704" style="position:relative">creates a boot file containing the code from myapp1.so and myapp2.so</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC705" class="react-file-line html-div" data-testid="code-cell" data-line-number="705" style="position:relative">with a header identifying petite.boot as a boot file upon which the new</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC706" class="react-file-line html-div" data-testid="code-cell" data-line-number="706" style="position:relative">boot file depends.</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC707" class="react-file-line html-div" data-testid="code-cell" data-line-number="707" style="position:relative">Source files can be provided as well and are compiled on-the-fly</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC708" class="react-file-line html-div" data-testid="code-cell" data-line-number="708" style="position:relative">by make-boot-header.</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC709" class="react-file-line html-div" data-testid="code-cell" data-line-number="709" style="position:relative">.<span class="pl-e">LP</span></div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC710" class="react-file-line html-div" data-testid="code-cell" data-line-number="710" style="position:relative">Multiple alternatives for the boot file upon which the new boot</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC711" class="react-file-line html-div" data-testid="code-cell" data-line-number="711" style="position:relative">file depends can be listed, e.g.:</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC712" class="react-file-line html-div" data-testid="code-cell" data-line-number="712" style="position:relative">.<span class="pl-e">br</span></div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC713" class="react-file-line html-div" data-testid="code-cell" data-line-number="713" style="position:relative">.<span class="pl-e">sp</span></div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC714" class="react-file-line html-div" data-testid="code-cell" data-line-number="714" style="position:relative"> (make-boot-file "myapp.boot" '("petite" "scheme")</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC715" class="react-file-line html-div" data-testid="code-cell" data-line-number="715" style="position:relative"> "myapp1.so" "myapp2.so")</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC716" class="react-file-line html-div" data-testid="code-cell" data-line-number="716" style="position:relative">.<span class="pl-e">sp</span></div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC717" class="react-file-line html-div" data-testid="code-cell" data-line-number="717" style="position:relative">.<span class="pl-e">br</span></div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC718" class="react-file-line html-div" data-testid="code-cell" data-line-number="718" style="position:relative">When possible, both <span class="pl-cce"><span class="pl-en">\*(</span><span class="pl-v">lq</span></span>scheme<span class="pl-cce"><span class="pl-en">\*(</span><span class="pl-v">lq</span></span> and <span class="pl-cce"><span class="pl-en">\*(</span><span class="pl-v">lq</span></span>petite<span class="pl-cce"><span class="pl-en">\*(</span><span class="pl-v">lq</span></span> should be</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC719" class="react-file-line html-div" data-testid="code-cell" data-line-number="719" style="position:relative">specified when creating a boot file for an application, as shown above, so</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC720" class="react-file-line html-div" data-testid="code-cell" data-line-number="720" style="position:relative">that the application can run in either <span class="pl-cce"><span class="pl-en">\*</span><span class="pl-v">p</span></span> or <span class="pl-cce"><span class="pl-en">\*</span><span class="pl-v">s</span></span>.</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC721" class="react-file-line html-div" data-testid="code-cell" data-line-number="721" style="position:relative">If the application requires the use of the compiler, just</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC722" class="react-file-line html-div" data-testid="code-cell" data-line-number="722" style="position:relative"><span class="pl-cce"><span class="pl-en">\*(</span><span class="pl-v">lq</span></span>scheme<span class="pl-cce"><span class="pl-en">\*(</span><span class="pl-v">lq</span></span> should be specified.</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC723" class="react-file-line html-div" data-testid="code-cell" data-line-number="723" style="position:relative">.<span class="pl-e">LP</span></div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC724" class="react-file-line html-div" data-testid="code-cell" data-line-number="724" style="position:relative">If the new boot file is to be a base boot file, i.e., one that does not</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC725" class="react-file-line html-div" data-testid="code-cell" data-line-number="725" style="position:relative">depend on another boot file, petite.boot (or some other boot file created</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC726" class="react-file-line html-div" data-testid="code-cell" data-line-number="726" style="position:relative">from petite.boot) should be listed first among the input files.</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC727" class="react-file-line html-div" data-testid="code-cell" data-line-number="727" style="position:relative">.<span class="pl-e">br</span></div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC728" class="react-file-line html-div" data-testid="code-cell" data-line-number="728" style="position:relative">.<span class="pl-e">sp</span></div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC729" class="react-file-line html-div" data-testid="code-cell" data-line-number="729" style="position:relative"> (make-boot-file "myapp.boot" '() "petite.boot"</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC730" class="react-file-line html-div" data-testid="code-cell" data-line-number="730" style="position:relative"> "myapp1.so" "myapp2.so")</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC731" class="react-file-line html-div" data-testid="code-cell" data-line-number="731" style="position:relative">.<span class="pl-e">sp</span></div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC732" class="react-file-line html-div" data-testid="code-cell" data-line-number="732" style="position:relative">.<span class="pl-e">br</span></div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC733" class="react-file-line html-div" data-testid="code-cell" data-line-number="733" style="position:relative"><span class="pl-mh">.<span class="pl-en">SH</span> DOCUMENTATION</span></div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC734" class="react-file-line html-div" data-testid="code-cell" data-line-number="734" style="position:relative">.<span class="pl-e">LP</span></div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC735" class="react-file-line html-div" data-testid="code-cell" data-line-number="735" style="position:relative">Complete documentation for <span class="pl-cce"><span class="pl-en">\*</span><span class="pl-v">s</span></span> is available in two parts:</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC736" class="react-file-line html-div" data-testid="code-cell" data-line-number="736" style="position:relative"><span class="pl-cce"><span class="pl-en">\fI</span></span><span class="pl-mi">The</span> <span class="pl-mi">Scheme</span> <span class="pl-mi">Programming</span> <span class="pl-mi">Language,</span> <span class="pl-mi">4th</span> <span class="pl-mi">Edition</span><span class="pl-cce"><span class="pl-en">\fP</span></span>, and</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC737" class="react-file-line html-div" data-testid="code-cell" data-line-number="737" style="position:relative"><span class="pl-cce"><span class="pl-en">\fI</span></span><span class="pl-mi">The</span> <span class="pl-mi">Chez</span> <span class="pl-mi">Scheme</span> <span class="pl-mi">Version</span> <span class="pl-mi">9</span> <span class="pl-mi">User's</span> <span class="pl-mi">Guide</span><span class="pl-cce"><span class="pl-en">\fP</span></span>.</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC738" class="react-file-line html-div" data-testid="code-cell" data-line-number="738" style="position:relative">The first document is available in printed form from MIT Press,</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC739" class="react-file-line html-div" data-testid="code-cell" data-line-number="739" style="position:relative">and links to online versions of both documents are available</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC740" class="react-file-line html-div" data-testid="code-cell" data-line-number="740" style="position:relative">at https://cisco.github.io/ChezScheme/.</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC741" class="react-file-line html-div" data-testid="code-cell" data-line-number="741" style="position:relative">.<span class="pl-e">LP</span></div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC742" class="react-file-line html-div" data-testid="code-cell" data-line-number="742" style="position:relative">Several example Scheme programs, ranging from a simple factorial procedure</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC743" class="react-file-line html-div" data-testid="code-cell" data-line-number="743" style="position:relative">to a somewhat complex unification algorithm, are in the examples directory</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC744" class="react-file-line html-div" data-testid="code-cell" data-line-number="744" style="position:relative">(see FILES below). Looking at and trying out example programs is a good way</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC745" class="react-file-line html-div" data-testid="code-cell" data-line-number="745" style="position:relative">to start learning Scheme.</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC746" class="react-file-line html-div" data-testid="code-cell" data-line-number="746" style="position:relative"><span class="pl-mh">.<span class="pl-en">SH</span> ENVIRONMENT</span></div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC747" class="react-file-line html-div" data-testid="code-cell" data-line-number="747" style="position:relative">.<span class="pl-e">LP</span></div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC748" class="react-file-line html-div" data-testid="code-cell" data-line-number="748" style="position:relative">The environment variable</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC749" class="react-file-line html-div" data-testid="code-cell" data-line-number="749" style="position:relative">.<span class="pl-en">B</span> <span class="pl-mb">SCHEMEHEAPDIRS</span> <span class="pl-mb"><span class="pl-cce"><span class="pl-en">\fR</span></span></span></div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC750" class="react-file-line html-div" data-testid="code-cell" data-line-number="750" style="position:relative">(see above) may be set</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC751" class="react-file-line html-div" data-testid="code-cell" data-line-number="751" style="position:relative">to a colon-separated (semi-colon under Windows) list of directories</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC752" class="react-file-line html-div" data-testid="code-cell" data-line-number="752" style="position:relative">in which to search for boot files.</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC753" class="react-file-line html-div" data-testid="code-cell" data-line-number="753" style="position:relative"><span class="pl-mh">.<span class="pl-en">SH</span> FILES</span></div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC754" class="react-file-line html-div" data-testid="code-cell" data-line-number="754" style="position:relative">.<span class="pl-k">if</span> <span class="pl-c1">0</span> COMMENT<span class="pl-k">:</span> put the longest path from below in the tab computation<span class="pl-k">:</span></div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC755" class="react-file-line html-div" data-testid="code-cell" data-line-number="755" style="position:relative">.<span class="pl-e">ta</span> <span class="pl-cce"><span class="pl-en">\w</span><span class="pl-s">'{InstallLibExamples}'</span></span><span class="pl-v">u+.25i</span></div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC756" class="react-file-line html-div" data-testid="code-cell" data-line-number="756" style="position:relative">{InstallBin}/{InstallSchemeName} executable file</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC757" class="react-file-line html-div" data-testid="code-cell" data-line-number="757" style="position:relative">.<span class="pl-e">br</span></div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC758" class="react-file-line html-div" data-testid="code-cell" data-line-number="758" style="position:relative">{InstallBin}/{InstallPetiteName} executable file</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC759" class="react-file-line html-div" data-testid="code-cell" data-line-number="759" style="position:relative">.<span class="pl-e">br</span></div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC760" class="react-file-line html-div" data-testid="code-cell" data-line-number="760" style="position:relative">{InstallBin}/{InstallScriptName} executable file</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC761" class="react-file-line html-div" data-testid="code-cell" data-line-number="761" style="position:relative">.<span class="pl-e">br</span></div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC762" class="react-file-line html-div" data-testid="code-cell" data-line-number="762" style="position:relative">{InstallLibExamples} example program library</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC763" class="react-file-line html-div" data-testid="code-cell" data-line-number="763" style="position:relative">.<span class="pl-e">br</span></div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC764" class="react-file-line html-div" data-testid="code-cell" data-line-number="764" style="position:relative">{InstallLibBin} boot and include files</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC765" class="react-file-line html-div" data-testid="code-cell" data-line-number="765" style="position:relative">.<span class="pl-e">sp</span></div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC766" class="react-file-line html-div" data-testid="code-cell" data-line-number="766" style="position:relative">.<span class="pl-e">br</span></div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC767" class="react-file-line html-div" data-testid="code-cell" data-line-number="767" style="position:relative"><span class="pl-mh">.<span class="pl-en">SH</span> SEE ALSO</span></div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC768" class="react-file-line html-div" data-testid="code-cell" data-line-number="768" style="position:relative">.<span class="pl-e">in</span> <span class="pl-c1">+5</span></div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC769" class="react-file-line html-div" data-testid="code-cell" data-line-number="769" style="position:relative">.<span class="pl-e">br</span></div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC770" class="react-file-line html-div" data-testid="code-cell" data-line-number="770" style="position:relative">.<span class="pl-e">ti</span> <span class="pl-c1">-5</span></div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC771" class="react-file-line html-div" data-testid="code-cell" data-line-number="771" style="position:relative">R. Kent Dybvig,</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC772" class="react-file-line html-div" data-testid="code-cell" data-line-number="772" style="position:relative"><span class="pl-cce"><span class="pl-en">\fI</span></span><span class="pl-mi">The</span> <span class="pl-mi">Scheme</span> <span class="pl-mi">Programming</span> <span class="pl-mi">Language,</span> <span class="pl-mi">4th</span> <span class="pl-mi">Edition</span><span class="pl-cce"><span class="pl-en">\fP</span></span>,</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC773" class="react-file-line html-div" data-testid="code-cell" data-line-number="773" style="position:relative">MIT Press (2009), http://www.scheme.com/tspl4/.</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC774" class="react-file-line html-div" data-testid="code-cell" data-line-number="774" style="position:relative">.<span class="pl-e">br</span></div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC775" class="react-file-line html-div" data-testid="code-cell" data-line-number="775" style="position:relative">.<span class="pl-e">ti</span> <span class="pl-c1">-5</span></div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC776" class="react-file-line html-div" data-testid="code-cell" data-line-number="776" style="position:relative"><span class="pl-cce"><span class="pl-en">\fI</span></span><span class="pl-mi">Chez</span> <span class="pl-mi">Scheme</span> <span class="pl-mi">Version</span> <span class="pl-mi">9</span> <span class="pl-mi">User's</span> <span class="pl-mi">Guide</span><span class="pl-cce"><span class="pl-en">\fP</span></span>,</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC777" class="react-file-line html-div" data-testid="code-cell" data-line-number="777" style="position:relative">Cisco Systems, Inc.</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC778" class="react-file-line html-div" data-testid="code-cell" data-line-number="778" style="position:relative">.<span class="pl-e">br</span></div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC779" class="react-file-line html-div" data-testid="code-cell" data-line-number="779" style="position:relative">.<span class="pl-e">ti</span> <span class="pl-c1">-5</span></div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC780" class="react-file-line html-div" data-testid="code-cell" data-line-number="780" style="position:relative">Michael Sperber, R. Kent Dybvig, Matthew Flatt, and Anton van Straaten, eds.,</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC781" class="react-file-line html-div" data-testid="code-cell" data-line-number="781" style="position:relative">.<span class="pl-k">if</span> <span class="pl-c1">t</span> <span class="pl-cce"><span class="pl-en">\*(</span><span class="pl-v">lq</span></span>Revised<span class="pl-cce">\u</span>6<span class="pl-cce">\d</span> Report on the Algorithmic Language Scheme,<span class="pl-cce"><span class="pl-en">\*(</span><span class="pl-v">rq</span></span></div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC782" class="react-file-line html-div" data-testid="code-cell" data-line-number="782" style="position:relative">.<span class="pl-k">if</span> <span class="pl-c1">n</span> <span class="pl-cce"><span class="pl-en">\*(</span><span class="pl-v">lq</span></span>Revised^6 Report on the Algorithmic Language Scheme,<span class="pl-cce"><span class="pl-en">\*(</span><span class="pl-v">rq</span></span></div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC783" class="react-file-line html-div" data-testid="code-cell" data-line-number="783" style="position:relative">(2007), http://www.r6rs.org/.</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC784" class="react-file-line html-div" data-testid="code-cell" data-line-number="784" style="position:relative">.<span class="pl-e">br</span></div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC785" class="react-file-line html-div" data-testid="code-cell" data-line-number="785" style="position:relative">.<span class="pl-e">ti</span> <span class="pl-c1">-5</span></div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC786" class="react-file-line html-div" data-testid="code-cell" data-line-number="786" style="position:relative">Daniel P. Friedman and Matthias Felleisen,</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC787" class="react-file-line html-div" data-testid="code-cell" data-line-number="787" style="position:relative"><span class="pl-cce"><span class="pl-en">\fI</span></span><span class="pl-mi">The</span> <span class="pl-mi">Little</span> <span class="pl-mi">Schemer</span><span class="pl-cce"><span class="pl-en">\fP</span></span>, fourth edition,</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC788" class="react-file-line html-div" data-testid="code-cell" data-line-number="788" style="position:relative">MIT Press (1996).</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC789" class="react-file-line html-div" data-testid="code-cell" data-line-number="789" style="position:relative">.<span class="pl-e">br</span></div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC790" class="react-file-line html-div" data-testid="code-cell" data-line-number="790" style="position:relative">.<span class="pl-e">ti</span> <span class="pl-c1">-5</span></div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC791" class="react-file-line html-div" data-testid="code-cell" data-line-number="791" style="position:relative">Harold Abelson and Gerald J. Sussman with Julie Sussman,</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC792" class="react-file-line html-div" data-testid="code-cell" data-line-number="792" style="position:relative"><span class="pl-cce"><span class="pl-en">\fI</span></span><span class="pl-mi">Structure</span> <span class="pl-mi">and</span> <span class="pl-mi">Interpretation</span> <span class="pl-mi">of</span> <span class="pl-mi">Computer</span> <span class="pl-mi">Programs,</span></div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC793" class="react-file-line html-div" data-testid="code-cell" data-line-number="793" style="position:relative"><span class="pl-mi">Second</span> <span class="pl-mi">Edition</span><span class="pl-cce"><span class="pl-en">\fP</span></span>,</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC794" class="react-file-line html-div" data-testid="code-cell" data-line-number="794" style="position:relative">MIT press (1996).</div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC795" class="react-file-line html-div" data-testid="code-cell" data-line-number="795" style="position:relative">.<span class="pl-e">in</span> <span class="pl-c1">-5</span></div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC796" class="react-file-line html-div" data-testid="code-cell" data-line-number="796" style="position:relative"><span class="pl-mh">.<span class="pl-en">SH</span> AUTHOR</span></div></div></div><div class="react-code-text react-code-line-contents" style="min-height:auto"><div><div id="LC797" class="react-file-line html-div" data-testid="code-cell" data-line-number="797" style="position:relative">Copyright 2019 Cisco Systems, Inc.</div></div></div><div class="react-code-text 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