/usr/share/source-highlight/sh.lang is in libsource-highlight-common 3.1.7-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 | preproc = "import"
#number = '(?<=-)([[:digit:]]+)'
include "number.lang"
normal = '\\"'
normal = '\\\''
include "c_string.lang"
function = 'function[[:blank:]]+([[:alpha:]]|_)[[:word:]]*[[:blank:]]*(\(\))?'
function = '([[:alpha:]]|_)[[:word:]]*[[:blank:]]*\(\)'
# avoids, in things such as --bind, that words are highlighted as keywords
normal = '([[:alpha:]]*[-/]+[[:alpha:]]+)+'
keyword = "alias|bg|bind|break|builtin|caller|case|command|compgen",
"complete|continue|declare|dirs|disown|do|done|elif|else|enable",
"esac|eval|exec|exit|export|false|fc|fg|fi|for|getopts|hash|help",
"history|if|in|jobs|let|local|logout|popd|printf|pushd|read",
"readonly|return|select|set|shift|shopt|source|suspend|test|then",
"times|trap|true|type|typeset|umask|unalias|unset|until|wait|while"
# it is considered a variable if there's a =, which is discarded anyway
variable = '([[:alpha:]]|_)[[:word:]]*(?==)'
variable = '\$\{([^[:blank:]]+)\}'
variable = '\$\(([^[:blank:]]+)\)'
variable = '\$([[:alpha:]]|_)[[:word:]]*'
variable = '\$([^[:blank:]]{1})'
# notice that - is not a symbol since it can be used in command line parameters
symbol = "~","!","%","^","*","(",")","+","=","[",
"]","\\",":",";",",",".","/","?","&","<",">","\|","%%"
symbol = '(##){2}(?!#)'
include "script_comment.lang"
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