Re: fix lt_join

[Ralf Wildenhues]

Hi Eric,

* Eric Blake wrote on Sat, Oct 13, 2007 at 07:31:47PM CEST:
> 
> In reviewing this thread for ways to speed up m4sugar:
> http://lists.gnu.org/archive/html/libtool-patches/2005-10/msg00161.html
> 
> I discovered that Ralf's 'speedup' for lt_join isn't perfect:
> 
> lt_join([|],[one],,,)
> => one|lt_car(,,)
> 
> Here's the implementation that mirrors what I'm installing into m4sugar;
> it has the added benefit of being faster as well.  OK to apply?

OK if you can explain to me the bug.  For me,
  lt_join([|],[one],,,)

expands to
  one

both before and after the patch.

Cheers,
Ralf

> 2007-10-13  Eric Blake  <address@hidden>
> 
>       Fix bug in lt_join(|,one,,,).
>       * libltdl/m4/ltsugar.m4 (lt_join, _lt_join): Rewrite to match
>       autoconf 2.62's faster implementation.