Re: CC Mode - syntactical can of worms.

[Stefan Monnier]

> Hi, Emacs and CC Mode!
> Following up from: address@hidden: Bug in emacs 22.1.1 (cosmetic
> bug)].

> This bug was in C Mode, with the following source line:

>     #warning for isn't a keyword here.

> This fouls up the fontification, because the syntactic fontification
> recognises the apostrophe as a string opener.  It can get pretty bad -
> here is a syntactically correct C function:

> 1   #warning for isn't a keyword here. (
> 2   //#warning for isnt a keyword here.
> 3   void foo (bar)
> 4   {
> 5   #error Brace yourself! }
> 6       printf ("Hello, world!\n") ; /* the famous one liner! */
> 7   }

You forget other interesting constructs such as

   #define HELLO }
   #define WORLD )
   
   void foo (WORLD
   {
     printf ("Hello\n"WORLD;
   HELLO

and of course, the more common ones like

   #if foo
   void foo (void)
   {
      size_t toto;
   #else
   int foo ()
   {
      unsigned toto;
   #endif

or how 'bout

   #include "hello.h"

   void foo (WORLD
   {
     printf ("Hello\n"WORLD;
   HELLO

CC-mode's job is fundamentally impossible.


        Stefan