/usr/share/source-highlight/javascript.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 | # Javascript lang definition file
# first check if the input matches a comment
include "c_comment.lang"
keyword =
"abstract|break|case|catch|class|const|continue|debugger|default|delete|do|else|enum|export|extends|false|final|finally|for|function|goto|if|implements|in|instanceof|interface|native|new|null|private|protected|prototype|public|return|static|super|switch|synchronized|throw|throws|this|transient|true|try|typeof|var|volatile|while|with"
# next check if it matches a division operator, which can occur only
# after a number, an identifier, or certain symbols
(symbol,normal,symbol) = `(\+\+|--|\)|\])(\s*)(/=?(?![*/]))`
(number,normal,symbol) =
`(0x[[:xdigit:]]+|(?:[[:digit:]]*\.)?[[:digit:]]+(?:[eE][+-]?[[:digit:]]+)?)(\s*)(/(?![*/]))`
(normal,symbol) = `([[:alpha:]$_][[:alnum:]$_]*\s*)(/=?(?![*/]))`
# finally check if it matches a regular expression
regexp = '/(\\.|[^*\\/])(\\.|[^\\/])*/[gim]*'
include "number.lang"
include "c_string.lang"
include "symbols.lang"
cbracket = "{|}"
include "function.lang"
|