My vimrc to share with the world!

`.vim/ftplugin/scanCMacro.pl`: scans and parses a C/C++ source

with its included files for macro blocks it contains.

Together with c.vim, the :MacroHighlight will disable syntax highlighting for inactive macro blocks.

For example, in foo.h:

#define HOO 0
// ...

in foo.c:

#include "foo.h"

void foo(void){
#if HOO == 0
   puts("HOOray!");
#else
   puts("Moo!");
#endif
}

Then when :MacroHighlight is executed in foo.c, then line 6-8 will not be highlighted.