Re: clean up m4sh.m4, then optimize AS_PATH_WALK

[Stepan Kasal]

Hello,

earlier today, I wrote:

> > 2006-04-01  Eric Blake  <address@hidden>
> > 
> >     * lib/m4sugar/m4sh.m4 (_AS_PATH_WALK): Optimize nonexistent
> >     directories, unless optional third argument supplied.
> >     (AS_UNAME): Don't optimize PATH walk.
> 
> I committed this one exactly as submitted.

... which introduced a bug in autotest.  Some directories were unjustly
removed from the path, and the system autoconf was used instead of the
one from the build.

I fixed this by the patch attached below.

(Actually, it might have been safer the other way round: _AS_PATH_WALK
would skip nonexistent directories only if explicitly requested.)

Stepan

autoconf-20060401-path-walk2.patch
Description: Text document