Re: svn commit: rev 7225 - in trunk: . build/ac-macros

=?UTF-8?B?QnJhbmtvIMSMaWJlag==?= <brane@xbc.nu> writes:

> Aha! I suspected your patch would do something like this. :-)
> Unfortunately, that woun't work; those regular expressions are tested
> with 'expr', which does not understand the | operator (at least, it
> doesn't on FreeBSD). In fact, the first thing I tried was exactly what
> you did here.
>
> We could use 'grep' instead of 'expr'. Does anyone know why we don't?

Plain grep on many systems won't work with '|':

$ uname -sr
FreeBSD 4.8-STABLE
$ cat /tmp/this;
a
b
$ grep 'a|b' /tmp/this
$ egrep 'a|b' /tmp/this
a
b

egrep works on Linux, FreeBSD, and Solaris8, I believe. Dunno about
others.

Cheers,
-B.

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Received on Mon Sep 29 01:30:52 2003