replace "tty" command w. "test -t 0", MacOS X color fix

I'm optimistic that most UNIX and UNIX-like systems support "test -t 0", but the possibility exists that some systems will not like this. This fix allows color to work in MacOS X 10.5.7. For some reason, the tty command is flaky when run from ~/.bash_profile and will report no tty. Didn't quite figure it out. But I did isolate it to this conditional, and verified that "test -t 0" (which is recommended as an alternative in the MacOS X "tty" man page) does get MacOS X color working again.
funtoo · Jul 22, 2009 · 181f0b7 · 181f0b7
1 parent 66e2d99
commit 181f0b7
Showing 1 changed file with 2 additions and 2 deletions.
diff --git a/keychain.sh b/keychain.sh
@@ -357,7 +357,7 @@ findpids() {
 
     # Try systems where we know what to do first
     case "$OSTYPE" in
-        AIX|*bsd*|*BSD*|CYGWIN|darwin*|Linux|linux-gnu|OSF1)
+        AIX|*bsd*|*BSD*|CYGWIN|darwin*|Linux|linux-gnu|OSF3)
             fp_psout=`ps x 2>/dev/null` ;;      # BSD syntax
         HP-UX)
             fp_psout=`ps -u $me 2>/dev/null` ;; # SysV syntax
@@ -1261,7 +1261,7 @@ fi
 
 # Don't use color if there's no terminal on stdout
 if [ -n "$OFF" ]; then
-    tty <&1 >/dev/null 2>&1 || unset BLUE CYAN GREEN OFF RED
+    test -t 0 || unset BLUE CYAN GREEN OFF RED
 fi
 
 # versinfo uses qprint, which honors --quiet