/usr/share/source-highlight/tcl.lang is in libsource-highlight-common 3.1.8-1.2.
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 | # language definition for TCL
include "script_comment.lang"
include "number.lang"
include "c_string.lang"
include "symbols.lang"
cbracket = "{|}"
keyword = "proc|global|upvar|if|then|else|elseif|for|foreach",
"break|continue|while|set|eval|case|in|switch",
"default|exit|error|proc|return|uplevel|loop",
"for_array_keys|for_recursive_glob|for_file|unwind_protect",
"expr|catch|namespace|rename|variable",
"method|itcl_class|public|protected",
"append|binary|format|re_syntax|regexp|regsub",
"scan|string|subst",
"concat|join|lappend|lindex|list|llength|lrange",
"lreplace|lsearch|lset|lsort|split",
"expr",
"incr|close|eof|fblocked|fconfigure|fcopy|file",
"fileevent|flush|gets|open|puts|read|seek",
"socket|tell",
"load|loadTk|package|pgk::create|pkg_mkIndex|source",
"bgerror|history|info|interp|memory|unknown",
"enconding|http|msgcat",
"cd|clock|exec|exit|glob|pid|pwd|time",
"dde|registry|resource"
vardef ID = '[[:word:]:-]+'
variable = "$" + $ID + "|${" + $ID + "}"
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