Re: r150960 changed ltmain.sh and broke the build

[Ralf Wildenhues <Ralf.Wildenhues@gmx.de>]

[ trimmed Cc:, added autoconf-patches; followups can remove gcc@ ]
[ http://thread.gmane.org/gmane.comp.gcc.devel/108348 ]

* Dave Korn wrote on Wed, Aug 26, 2009 at 08:16:11PM CEST:
> Ralf Wildenhues wrote:
> >      Patterns should not include the separator (unless escaped), even
> >      as part of a character class.  In conformance with Posix, the Cray
> >      `sed' rejects `s/[^/]*$//': use `s,[^/]*$,,'.
> > [...]
> >      Portable `sed' regular expressions should use `\' only to escape
> >      characters in the string `$()*.0123456789[\^n{}'.
> 
>   Ah, I didn't read those two conditions as applying simultaneously.

I don't think they apply simultaneously in the way you interpreted that.
However, in the  s,x\{1\,\},y,  example, the comma is both a separator
and another metacharacter.  Hmm, maybe those sentences don't really
cover this case.

How about

     Patterns should not include the separator (unless escaped), even
     as part of a character class.  In conformance with Posix, the Cray
     `sed' rejects `s/[^/]*$//': use `s,[^/]*$,,'.  Even escaped,
     patterns should not include separators that are also used as
     metacharacters.  For example, GNU sed 3.02 rejects `s,x\{1\,\},,',
     and is used on MinGW.

?

Cheers,
Ralf