bug#11986: 24.1; cc-mode not font lock objc methods with leading _

bug#11986: 24.1; cc-mode not font lock objc methods with leading _

[Leo]

Put the following objc method declaration¹ in an objc-mode buffer:

    - (DDMathStringToken *)_parseNumberWithError:(NSError **)error;

You can see _parseNumberWithError not highlighted in
font-lock-function-name-face. This may be due to c-symbol-start not
containing _.

Leo

Footnotes: 
¹  Taken from https://github.com/davedelong/DDMathParser

bug#11986: 24.1; cc-mode not font lock objc methods with leading _

[Leo]

I plan to install the following fix later day.

diff --git a/lisp/progmodes/cc-langs.el b/lisp/progmodes/cc-langs.el
index 493f3db0..78be8ac2 100644
--- a/lisp/progmodes/cc-langs.el
+++ b/lisp/progmodes/cc-langs.el
@@ -578,7 +578,7 @@ (c-lang-defconst c-symbol-start
 operator at the top level."
   t    (concat "[" c-alpha "_]")
   java (concat "[" c-alpha "_@]")
-  objc (concat "[" c-alpha "@]")
+  objc (concat "[" c-alpha "_@]")
   pike (concat "[" c-alpha "_`]"))
 (c-lang-defvar c-symbol-start (c-lang-const c-symbol-start))
 

Leo

bug#11986: 24.1; cc-mode not font lock objc methods with leading _

[Leo]

Installed in emacs-24.