[gtksourceview: 1/4] php.lang: Add support for Unicode identifiers

[Christian Hergert <chergert src gnome org>]

commit 282c20c62d0417246ce416f01ed4cc4ce4dab84d
Author: Jeffery To <jeffery to gmail com>
Date:   Tue Oct 29 00:03:19 2019 +0800

    php.lang: Add support for Unicode identifiers
    
    Fixes #10.

 data/language-specs/php.lang       | 10 ++++++----
 tests/syntax-highlighting/file.php |  8 ++++++++
 2 files changed, 14 insertions(+), 4 deletions(-)
---
diff --git a/data/language-specs/php.lang b/data/language-specs/php.lang
index 17d7b796..0066707e 100644
--- a/data/language-specs/php.lang
+++ b/data/language-specs/php.lang
@@ -58,6 +58,8 @@
 
   <definitions>
 
+    <define-regex id="identifier">[a-zA-Z_\x{80}-\x{10ffff}][a-zA-Z0-9_\x{80}-\x{10ffff}]*</define-regex>
+
     <context id="bash-line-comment" style-ref="comment" end-at-line-end="true" extend-parent="false" 
class="comment" class-disabled="no-spell-check">
       <start>#</start>
       <include>
@@ -89,7 +91,7 @@
     </context>
 
     <context id="variable" style-ref="variable">
-      <match>[$]+[a-zA-Z_][a-zA-Z0-9_]*</match>
+      <match>[$]+\%{identifier}</match>
     </context>
 
     <context id="array-operators" style-ref="variable">
@@ -147,7 +149,7 @@
     </context>
 
     <context id="here-doc-string" style-ref="here-doc" extend-parent="true">
-      <start>(&lt;&lt;&lt;)\s?([a-zA-Z_][a-zA-Z0-9_]*)</start>
+      <start>(&lt;&lt;&lt;)\s?(\%{identifier})</start>
       <end>^(\%{2@start});?$</end>
       <include>
         <context sub-pattern="0" where="start" style-ref="here-doc-bound"/>
@@ -159,7 +161,7 @@
     </context>
 
     <context id="now-doc-string" style-ref="here-doc" extend-parent="true">
-      <start>(&lt;&lt;&lt;)\s?'([a-zA-Z_][a-zA-Z0-9_]*)'</start>
+      <start>(&lt;&lt;&lt;)\s?'(\%{identifier})'</start>
       <end>^(\%{2@start});?$</end>
       <include>
         <context sub-pattern="0" where="start" style-ref="here-doc-bound"/>
@@ -172,7 +174,7 @@
     </context>
 
     <context id="identifier" style-ref="identifier">
-      <match>[a-zA-Z_][a-zA-Z0-9_]*</match>
+      <match>\%{identifier}</match>
     </context>
 
     <context id="keywords" style-ref="keyword">
diff --git a/tests/syntax-highlighting/file.php b/tests/syntax-highlighting/file.php
new file mode 100644
index 00000000..69d2c730
--- /dev/null
+++ b/tests/syntax-highlighting/file.php
@@ -0,0 +1,8 @@
+<?php
+$i = 1;
+$數 = 1;
+$i數 = 1;
+
+$str <<<extrémité
+text
+extrémité