bug#62896: [Configure] Bug with check for PERL when path has spaces (i.e. Windows)

[Bogdan]

Karl Berry <karl@freefriends.org>, Fri Apr 21 2023 23:57:12 GMT+0200 
(Central European Summer Time)
> Thanks for the report, Dan, and for looking into this, Bogdan.
>
>              #!User bins/perl
>
> Apart from anything else, this cannot be solved. Shebang lines do not
> support quoting.
>
> Thus I think what we should do is have configure give a better error
> message when the Perl path contains whitespace, that is, explicitly
> stating it can't be supported.  Instead of just failing "by the way" due
> to the lack of quoting. Would you be up for making a patch for that?


 Sure, seems easy. Too bad I don't see where configure is checking 
for 'mkdir -p' and 'install -c', I could fix that as well.
 But anyway, patch for the Perl path attached. I thought about using 
'grep -q' and checking the exit code, but maybe this version is more 
portable.

--
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