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AC_PROG_EGREP behaviour

From: Stepan Kasal
Subject: AC_PROG_EGREP behaviour
Date: Mon, 6 Dec 2004 10:16:52 +0100
User-agent: Mutt/1.4.1i

  the behaviour of AC_PROG_EGREP has changed.  I'd like to ask whether
this was intentional.

Previously, the macro set EGREP=egrep even if there was no egrep on the
The CVS version calls _AC_PROG_GREP, which means that on system without
any working egrep, configuration halts with an error.  Is that OK?

OTOH, if AC_PROG_AWK finds no awk, the variable AWK is not set.
Shouldn't we halt with an error too?
Or shouldn't we set AWK=awk anyway, similarily to AC_PROG_YACC?

Shouldn't the documentation of AC_PROG_{AWK,*GREP,SED} mention these

Have a nice day,

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