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'For' loops with empty 'in' expansions no longer work.

From: malcolm
Subject: 'For' loops with empty 'in' expansions no longer work.
Date: Sat, 20 Apr 2002 11:36:56 +1000

Configuration Information [Automatically generated, do not change]:
Machine: i386
OS: linux-gnu
Compiler: gcc
Compilation CFLAGS:  -DPROGRAM='bash' -DCONF_HOSTTYPE='i386' 
-DCONF_OSTYPE='linux-gnu' -DCONF_MACHTYPE='i386-redhat-linux-gnu' 
-D_FILE_OFFSET_BITS=64  -I.  -I. -I./include -I./lib -I/usr/include -O2 
-march=i386 -mcpu=i686
uname output: Linux ws14.commsecure.com.au 2.4.18 #1 Sat Apr 6 15:41:47 EST 
2002 i686 unknown
Machine Type: i386-redhat-linux-gnu

Bash Version: 2.05
Patch Level: 8
Release Status: release

        In bash2 versions up to 2.04, a loop of the form

                for i in $WORDS
        would not execute the loop body if $WORDS expanded to nothing.
        In version 2.05, this situation generates a syntax error.

        The bash documentation (info page) indicates that the 2.04
        behaviour is correct and the most recent change is incorrect.

        The previous behaviour was certainly more useful, since the loop
        body could be executed only if there were arguments to work with
        (e.g. in the case where <stuff> is "gcc $i" -- this clearly
        makes no sense if $i is empty).


        for i in ; do echo foo; done

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