Preprocessing #ifdef but not #define

[Bruce Dumes]

In article <4769 at dogie.macc.wisc.edu> thomson at vms.macc.wisc.edu (Don Thomson, MACC) writes:
>I'm sorting through C code loaded with #ifdef statements for portability.  I'd
>like to strip the code down to a version that applies to my operating system
>and configuration so that I can read through it but don't want to preprocess
>all the #define statements, as I'd like to see the #define mnemonics in the
>stripped down code.  I don't see any options for the C preprocessor that will
>allow me to preprocess #ifdef's but not #define's.  Is there an easy way to do
>this?
>

If you have Gnu emacs, you can use the hide-ifdefs command.  It's
pretty handy.  You can define whatever you want, and all the undefined
"#ifdef"s will look something like:

	#ifdef FOOBAR ...
	#else
		printf("I am not a foobar\n");
	#endif


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Bruce Dumes			|  "You don't see many of *these* nowdays, |
bad at zen.cac.stratus.com		|   do you?"				   |