Don't misfontify "foo ()" inside C++ initialization parentheses as a type

Also recognize and handle function names introduced by "extern" inside a
function.

* lisp/progmodes/cc-engine.el (c-forward-decl-or-cast-1): Add a new element to
the result list which is t when our declaration is, or is to be treated as,
being at top level.

* lisp/progmodes/cc-fonts.el (c-get-fontification-context): Detect being
inside a C++ uniform initialization and return (not-decl nil) for this case.
(c-font-lock-declarations): Use the new element 4 of the result of
c-forward-decl-or-cast-1.

* lisp/progmodes/cc-langs.el (c-make-top-level-kwds, c-make-top-level-key):
New lang consts/vars.

1 files changed, 10 insertions, 0 deletions

diff --git a/lisp/progmodes/cc-langs.el b/lisp/progmodes/cc-langs.el
index 227b3e16485..869048bee31 100644
--- a/lisp/progmodes/cc-langs.el
+++ b/lisp/progmodes/cc-langs.el
@@ -2355,6 +2355,16 @@ construct it's part of continues."
   t    nil
   (c c++ objc) '("extern"))
 
+(c-lang-defconst c-make-top-level-kwds
+  "Keywords which make declarations they introduce be handled as top-level."
+  t    nil
+  (c c++ objc) '("extern"))
+
+(c-lang-defconst c-make-top-level-key
+  ;; A regexp which matches any `c-make-top-level-kwds' keyword.
+  t (c-make-keywords-re t (c-lang-const c-make-top-level-kwds)))
+(c-lang-defvar c-make-top-level-key (c-lang-const c-make-top-level-key))
+
 (c-lang-defconst c-type-list-kwds
   "Keywords that may be followed by a comma separated list of type
 identifiers, where each optionally can be prefixed by keywords.  (Can