Re: Portability problems of "Usual Tools" not described in manual

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According to Ralf Wildenhues on 3/17/2009 3:07 PM:
>> I'm assuming this was from an older version of coreutils?  Can someone
>> determine 'expr --version' in the broken case, to see when it was fixed?
> 
> I see one instance of this, in the 'dirname' emulation code in m4sh
> (also in install-sh).  Luckily, coreutils dirname works, so that isn't
> a problem.

How far back does the coreutils bug extend?  We already proved it was a
regression introduced some point after sh-utils 1.16.  Is there a chance
that the user's coreutils could be so old that basename is also rejected
by m4sh?  At which point, maybe we DO need to teach _AS_EXPR_PREPARE to
reject the broken coreutils expr in favor of sed?

- --
Don't work too hard, make some time for fun as well!

Eric Blake             ebb9@xxxxxxx
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