Fontify "extern foo ();" correctly inside a function

This fixes bug#63224.

* lisp/progmodes/cc-engine.el (c-forward-type): Handle the "("
as a special case by trying to parse it with
c-forward-declarator and accepting it as a typeless function
when that fails.

diff --git a/lisp/progmodes/cc-engine.el b/lisp/progmodes/cc-engine.el
index f7320da5629654ca2afbdf8b3588efbc42391ab2..8b34daf03c2ef5d33d9876a2e127cac3b1bd8f3d 100644 (file)
--- a/lisp/progmodes/cc-engine.el
+++ b/lisp/progmodes/cc-engine.el
@@ -9279,7 +9279,11 @@ multi-line strings (but not C++, for example)."
             (setq pos (point))
             (c-forward-syntactic-ws)
             (and (not (looking-at c-symbol-start))
-                 (not (looking-at c-type-decl-prefix-key)))))
+                 (or
+                  (not (looking-at c-type-decl-prefix-key))
+                  (and (eq (char-after) ?\()
+                       (not (save-excursion
+                              (c-forward-declarator))))))))
       ;; A C specifier followed by an implicit int, e.g.
       ;; "register count;"
       (goto-char prefix-end-pos)