Re: problem with ifelse

[Vincent Torri]

On Thu, 5 Mar 2009, Eric Blake wrote:

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> According to Vincent Torri on 3/4/2009 1:34 PM:
> > dnl use: ECORE_CHECK_MODULE(Foo, default-enabled[, dependancy[,
> > ACTION-IF-FOUND[, ACTION-IF-NOT-FOUND]]])
> > AC_DEFUN([ECORE_CHECK_MODULE],
> > [
> > pushdef([UP], translit([$1], [a-z], [A-Z]))dnl
> > pushdef([DOWN], translit([$1], [A-Z], [a-z]))dnl
>
> Consider using the m4sugar namespace.  We have threatened to add warnings
> when using the raw m4 namespace from within configure scripts, because it
> is too easy to run into conflicts.  For that matter, why not use
> m4_toupper and m4_tolower, instead of rewriting them yourself?  Not to
> mention that those macros are more robust to arguments that include
> potential macro names (your version is underquoted, and would end up
> expanding such a macro).
>
> m4_pushdef([UP], m4_toupper([[$1]]))dnl

and what to do with m4_pushdef if i want to transform - to _. For example, 
I use this:

pushdef([UP], translit([$1], [-a-z], [_A-Z]))dnl
pushdef([DOWN], translit([$1], [-A-Z], [_a-z]))dnl

Vincent Torri