[gtksourceview] Add headings styles to def.lang

[Sébastien Wilmet <swilmet src gnome org>]

commit becb6d7c24458ac7975976766c59d98b57be43b4
Author: Andreas Fuchs <anduchs gmail com>
Date:   Thu Jan 2 17:09:33 2014 +0100

    Add headings styles to def.lang

 data/language-specs/def.lang |    8 ++++++++
 1 files changed, 8 insertions(+), 0 deletions(-)
---
diff --git a/data/language-specs/def.lang b/data/language-specs/def.lang
index c012825..373fe14 100644
--- a/data/language-specs/def.lang
+++ b/data/language-specs/def.lang
@@ -108,6 +108,14 @@
     <style id="note"                _name="Note (FIXME, TODO, XXX, etc.)"/>
     <!-- Text that stands out, HTML links, e-mail addresses, etc. -->
     <style id="underlined"          _name="Underlined"/>
+    <!-- Text that acts as some kind of heading, such as h1, h2, ... in html. -->
+    <style id="heading0"            _name="Heading 0"/>
+    <style id="heading1"            _name="Heading 1"/>
+    <style id="heading2"            _name="Heading 2"/>
+    <style id="heading3"            _name="Heading 3"/>
+    <style id="heading4"            _name="Heading 4"/>
+    <style id="heading5"            _name="Heading 5"/>
+    <style id="heading6"            _name="Heading 6"/>
   </styles>
 
   <definitions>