> Err, maybe I was not answering on the spaces you were referring to.
>
> If you refer to the spaces in the case argument and in the patterns,
> it's nothing but protection against collisions such as
> topo/Makefile.in. So they want spaces in the patterns, as a
> separator, but then they need to add spaces in case po/Makefile.in
> were the first/last in $CONFIG_FILES.
The way it is now, their code is highly fragile, because it presumes
a particular formatting of AC_OUTPUT. It breaks on
po/Makfile.in.in\n
\tpo/Makefile.in.in
\tpo/Makefile.in.in\tfoo/Makefile.in
etc.