Re: document AS_BASENAME

[Eric Blake]

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According to Stepan Kasal on 4/1/2006 8:35 AM:
> I think it would be simpler to handle the corner cases once, by a shell
> ``case,'' and use expr||sed only for the non-trivial one.
> 
> 
>       * lib/m4sugar/m4sh.m4 (AS_DIRNAME): Reimplement using AS_CASE.
>       (AS_BASENAME): Likewise.
>       (AS_DIRNAME_EXPR, AS_DIRNAME_SED, AS_BASENAME_EXPR, AS_BASENAME_SED):
>         Nuke.
>       * tests/m4sh.at (AS_DIRNAME, AS_BASENAME): Do not test the removed
>         macros.

Also, if we are handling the special cases up front, then we can guarantee
that we are no longer calling 'basename /'.  If we decide to take the
approach of your patch, then _AS_BASENAME_PREPARE becomes extraneous, and
you should delete it (since we would be removing the one reason we avoid a
platform basename).

- --
Life is short - so eat dessert first!

Eric Blake             address@hidden
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