[gtksourceview] desktop.lang: support languages with @ in their name

[Sébastien Wilmet <swilmet src gnome org>]

commit 3b87ce2c58fd9ac06fa4e360a54f97d04cfd3a12
Author: Sébastien Wilmet <swilmet gnome org>
Date:   Wed Nov 25 19:34:13 2015 +0100

    desktop.lang: support languages with @ in their name
    
    The "language" context class was actually dead code.
    But since the regex is duplicated at several places, define a regex and
    use it.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=757528

 data/language-specs/desktop.lang |    9 +++------
 1 files changed, 3 insertions(+), 6 deletions(-)
---
diff --git a/data/language-specs/desktop.lang b/data/language-specs/desktop.lang
index b4cfcc1..662a877 100644
--- a/data/language-specs/desktop.lang
+++ b/data/language-specs/desktop.lang
@@ -45,17 +45,14 @@
   </styles>
 
   <definitions>
-    <define-regex id="key-suffix">(?=(\[[a-zA-Z_]+\])?\s*=\s*)</define-regex>
+    <define-regex id="language">\[[a-zA-Z_]+ ?[a-zA-Z_]*\]</define-regex>
+    <define-regex id="key-suffix">(?=(\%{language})?\s*=\s*)</define-regex>
 
     <context id="group" style-ref="group">
       <start>^\[</start>
       <end>\]$</end>
     </context>
 
-    <context id="language" style-ref="language">
-      <match>\[[a-zA-Z_]+\]</match>
-    </context>
-
     <context id="boolean" style-ref="boolean">
       <keyword>true</keyword>
       <keyword>false</keyword>
@@ -285,7 +282,7 @@
         <context ref="group"/>
         <context ref="key"/>
         <context id="lang-and-value" end-at-line-end="true">
-          <start>(\[[a-zA-Z_]+\])?\s*=\s*</start>
+          <start>(\%{language})?\s*=\s*</start>
           <include>
             <context sub-pattern="1" where="start" style-ref="language"/>
             <context ref="boolean"/>