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Re: cpplib: new lexer
On Wed, Apr 26, 2000 at 04:37:24PM -0700, Russ Allbery wrote:
> Zack Weinberg <zack@wolery.cumb.org> writes:
>
> > I believe it's purely historical; -D does that because that's what -D
> > has always done. There is a justification, though. Macros defined on
> > the command line with no expansion are usually meant to be tested in
> > conditionals, and if you define them to 1 instead of empty, you can test
> > them with #if as well as #ifdef. (Of course you can use #if defined,
> > but that's more typing.)
>
> Note that the autoconf manual now uniformly uses #if instead of #ifdef, so
> if one uses the old-style autoconf results handling (command-line -D
> switches rather than a config.h file), proper compilation depends on this.
I have absolutely no intention of changing this.
zw