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failure in pipeline not reflected in $?

From: cell
Subject: failure in pipeline not reflected in $?
Date: Wed, 24 Aug 2005 12:26:58 -0500 (CDT)

Configuration Information [Automatically generated, do not change]:
Machine: i586
OS: linux-gnu
Compiler: gcc
Compilation CFLAGS:  -DPROGRAM='bash' -DCONF_HOSTTYPE='i586' 
-DCONF_OSTYPE='linux-gnu' -DCONF_MACHTYPE='i586-mandrake-linux-gnu' 
-DCONF_VENDOR='mandrake' -DLOCALEDIR='/usr/share/locale' -DPACKAGE='bash' 
-DSHELL -DHAVE_CONFIG_H  -I.  -I.. -I../include -I../lib  -D_GNU_SOURCE  -O2 
-fomit-frame-pointer -pipe -march=i586 -mtune=pentiumpro 
uname output: Linux block.ices.utexas.edu 2.6.11-6mdk #1 Tue Mar 22 16:04:32 
CET 2005 i686 AMD Athlon(TM) XP 2200+ unknown GNU/Linux
Machine Type: i586-mandrake-linux-gnu

Bash Version: 3.0
Patch Level: 16
Release Status: release

        I am not sure if this is a bug, or if this is correct behavior.


    false | true
    echo $?

    If a command in a pipeline of commands fails, there appears to be no
    way of knowing this.  One alternate behavior to consider is to return
    the exit status of the first command in the pipeline to exit with non
    zero status.

    Jason Pepas

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