awk-builtin-variables: builtin variable names and values for AWK language
bing-search-operators: Advanced search operators in the Microsoft Bing query language https://msdn.microsoft.com/library/ff795620.aspx
ch-language-keywords: keywords for Ch--the cross-platform C and C++ interpeter
esoteric-programming-languages: list of esoteric programming language names from https://esolangs.org/wiki/Language_list
gcc-clang-enums: constants of enum clang declared in libcpp/include/cpplib.h
github-linguist-languages: all languages GitHub detects
javascript-future-words: Reserved identifiers for future JavaScript syntax
javascript-reserved-words: Words that can't be used in current JavaScript syntax
openssl-header-constants: Preprocessor constants defined in OpenSSL header files
openssl-library-functions: OpenSSL man page functions
pandoc-markup-formats: a list of formats recognized as input or output by Pandoc
prismjs-lang-names: Prism syntax highlighted languages
pygments-styles-list: https://help.farbox.com/pygments.html
pygmentize-styles-list: http://pygments.org/docs/styles/#getting-a-list-of-available-styles
vimaddons-syntax-checkers: the output of ls -1 /var/lib/vim/addons/syntax_checkers
yandex-search-operators: https://yandex.com/support/search/how-to-search/search-operators.html