/usr/share/gtksourceview-2.0/language-specs/def.lang is in libgtksourceview2.0-common 2.10.5-1ubuntu2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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<!--
Authors: Marco Barisione, Emanuele Aina
Copyright (C) 2005-2007 Marco Barisione <barisione@gmail.com>
Copyright (C) 2005-2007 Emanuele Aina
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public
License as published by the Free Software Foundation; either
version 2 of the License, or (at your option) any later version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Library General Public License for more details.
You should have received a copy of the GNU Library General Public
License along with this library; if not, write to the
Free Software Foundation, Inc., 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA.
-->
<language id="def" _name="Defaults" hidden="true" version="2.0">
<styles>
<!-- styles defined here are all the styles that
a language can use as default for its styles.
The styles are defined in logical groups.
A style scheme has to at least define the style
for the first item of each group and if desired
define the style for the other items to achieve a
more finegrained control on the apperance.
Finally a style scheme may also define language
specific styles. -->
<!-- Comment group -->
<!-- Any comment -->
<style id="comment" _name="Comment"/>
<!-- A shebang: #!/bin/sh -->
<style id="shebang" _name="Shebang" map-to="def:comment"/>
<!-- A special comment containing documentation like in javadoc or
gtk-doc -->
<style id="doc-comment" _name="Documentation comment" map-to="def:comment"/>
<!-- A element inside a documentation comment: @author -->
<!-- This style doesn't map to anything since it must be used as an additional
style for text which is already styled as a "doc-comment" -->
<style id="doc-comment-element" _name="Documentation comment element" />
<!-- Constant group -->
<!-- Any constant -->
<style id="constant" _name="Constant"/>
<!-- A character constant: 'c' -->
<style id="character" _name="Character" map-to="def:constant"/>
<!-- A string constant: "this is a string" -->
<style id="string" _name="String" map-to="def:constant"/>
<!-- Special character in a string constant: "%s", "\t" -->
<!-- This style doesn't map to anything since it must be used as an additional
style for text which is already styled as a "string" -->
<style id="special-char" _name="Special character (inside a string)" />
<!-- A generic number constant -->
<style id="number" _name="Number" map-to="def:constant"/>
<!-- A floating point constant: 2.3e10 -->
<style id="floating-point" _name="Floating point number" map-to="def:number"/>
<!-- A decimal number: 1234 -->
<style id="decimal" _name="Decimal number" map-to="def:number"/>
<!-- A base-N number: 0xFFFF -->
<style id="base-n-integer" _name="Base-N number" map-to="def:number"/>
<!-- A complex number -->
<style id="complex" _name="Complex number" map-to="def:number"/>
<!-- A special constant like NULL in C or null in Java -->
<style id="special-constant" _name="Special constant" map-to="def:constant"/>
<!-- A boolean constant: TRUE, false -->
<style id="boolean" _name="Boolean value" map-to="def:special-constant"/>
<!-- Identifier group -->
<!-- Any variable name -->
<style id="identifier" _name="Identifier" />
<!-- A function name (also: methods for classes) -->
<style id="function" _name="Function" map-to="def:identifier"/>
<!-- A builtin name: like __import__, abs in Python
(see http://docs.python.org/lib/built-in-funcs.html) -->
<style id="builtin" _name="Built-in identifier" map-to="def:identifier"/>
<!-- Statement group -->
<!-- Any statement -->
<style id="statement" _name="Statement"/>
<!-- Operators: "+", "*", etc. -->
<style id="operator" _name="Operator" map-to="def:statement" />
<!-- keywords: "if", "for", "while", etc. -->
<style id="keyword" _name="Keyword" map-to="def:statement" />
<!-- Type group -->
<!--A primitive data type: int, long, char, etc. -->
<style id="type" _name="Data type"/>
<!-- Others -->
<!-- This one is for '#include <foo.h>' and "#pragma blah", or 'use foobar', etc.. -->
<style id="preprocessor" _name="Preprocessor directive"/>
<!-- Any erroneous construct -->
<style id="error" _name="Error"/>
<!--Reserved keywords: like "const" and "goto" in Java -->
<style id="reserved" _name="Reserved keyword" map-to="def:error" />
<!-- Anything that needs extra attention; mostly the keywords TODO, FIXME and XXX -->
<style id="note" _name="Note (FIXME, TODO, XXX, etc.)"/>
<!-- Text that stands out, HTML links, e-mail addresses, etc. -->
<style id="underlined" _name="Underlined"/>
</styles>
<definitions>
<!-- An empty string always matches. -->
<define-regex id="always-match"></define-regex>
<!-- $^ never matches. -->
<define-regex id="never-match">$^</define-regex>
<define-regex id="decimal" extended="true">
(?<![\w\.]) ([1-9][0-9]* | 0) (?![\w\.])
</define-regex>
<define-regex id="octal" extended="true">
(?<![\w\.]) 0 [0-7]+ (?![\w\.])
</define-regex>
<define-regex id="hexadecimal" extended="true">
(?<![\w\.]) 0 [xX] [0-9a-fA-F]+ (?![\w\.])
</define-regex>
<define-regex id="float" extended="true" case-sensitive="false">
\b
([0-9]+ e [-+]? [0-9]+ |
([0-9]* \. [0-9]+ | [0-9]+ \.)
(e [-+]? [0-9]+)?) [fl]?
\b
</define-regex>
<context id="decimal" style-ref="decimal">
<match>\%{decimal}</match>
</context>
<context id="octal" style-ref="base-n-integer">
<match>\%{octal}</match>
</context>
<context id="hexadecimal" style-ref="base-n-integer">
<match>\%{hexadecimal}</match>
</context>
<context id="float" style-ref="floating-point">
<match>\%{float}</match>
</context>
<!-- FIXME is it working at line end? -->
<define-regex id="net-address" extended="true" case-sensitive="false">
\%[ # separator
(https?|ftp|nntp|news|javascript|about): # protocol
[^\ \\]* [^\ \\.:;,?><)] # address
(?![a-z0-9_.-]) # separator
</define-regex>
<define-regex id="email-address" extended="true" case-sensitive="false">
\%[ # separator
(mailto:)? # optional "mailto:"
[a-z0-9_.+-]+ # user name
@ # at
[a-z0-9_.+-]+ # domain
\%] # separator
</define-regex>
<context id="in-comment" class-disabled="no-spell-check">
<include>
<context id="net-address" extend-parent="false" style-ref="underlined" class="no-spell-check">
<match>\%{net-address}</match>
</context>
<context id="email-address" extend-parent="false" style-ref="underlined" class="no-spell-check">
<match>\%{email-address}</match>
</context>
<context id="comment-note" extend-parent="false" style-ref="note" class="no-spell-check">
<match>\b(FIXME|TODO|XXX)\b</match>
</context>
</include>
</context>
<!-- A line comment starting with # -->
<context id="shell-like-comment" style-ref="comment" end-at-line-end="true" class-disabled="no-spell-check">
<start>#</start>
<include>
<context ref="in-comment"/>
</include>
</context>
<context id="line-continue" style-ref="preprocessor">
<start>\\$</start>
<end>^</end>
</context>
<!-- this is intended to be used from line comments
that can continue on a different line after "\" -->
<context id="in-line-comment" class-disabled="no-spell-check">
<include>
<context ref="line-continue" ignore-style="true"/>
<context ref="in-comment"/>
</include>
</context>
<context id="shebang" style-ref="shebang" first-line-only="true" class="no-spell-check">
<start>^#!</start>
<end>$</end>
</context>
<context id="escape" style-ref="special-char">
<match>\\.</match>
</context>
<!-- usual quoted string, ends at line end, \ is an escape char -->
<context id="string" style-ref="string" end-at-line-end="true" class="string" class-disabled="no-spell-check">
<start>"</start>
<end>"</end>
<include>
<context ref="escape"/>
<context ref="line-continue"/>
</include>
</context>
<!-- same thing but with single quote marks -->
<context id="single-quoted-string" style-ref="string" end-at-line-end="true" class="string" class-disabled="no-spell-check">
<start>'</start>
<end>'</end>
<include>
<context ref="escape"/>
<context ref="line-continue"/>
</include>
</context>
<!-- Dummy context, needed to load the style mappings when parsing v1 files -->
<context id="def"/>
</definitions>
</language>
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