Fix sphinx-doc#6497: custom lexers fails highlighting when syntax error

tk0miya · Jun 17, 2019 · 2119a65 · 2119a65
1 parent 5b307fc
commit 2119a65
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diff --git a/CHANGES b/CHANGES
@@ -16,6 +16,8 @@ Features added
 Bugs fixed
 ----------
 
+* #6497: custom lexers fails highlighting when syntax error
+
 Testing
 --------
 

diff --git a/sphinx/highlighting.py b/sphinx/highlighting.py
@@ -139,7 +139,8 @@ def get_lexer(self, source, lang, opts=None, force=False, location=None):
                 lexer = lexers['none']
 
         if lang in lexers:
-            lexer = lexers[lang]
+            # just return custom lexers here (without installing raiseonerror filter)
+            return lexers[lang]
         elif lang in lexer_classes:
             lexer = lexer_classes[lang](**opts)
         else: