Re: [PATCH v2] Replace instances of export VAR=VAL with VAR=VAL; export VAR

From: Johannes Sixt <j.sixt@viscovery.net>
Date: Nov 29, 2007, 07:39 UTC
Message-ID: <474E6CC8.8000301@viscovery.net>
In-Reply-To: <85sl2q6kyu.fsf@lola.goethe.zz>

David Kastrup schrieb:

Show 16 quoted lines

> Junio C Hamano <gitster@pobox.com> writes:
>> I thought somebody already mention that ash mishandles "export VAR=VAL"
>> but otherwise Ok.
> 
> dak@lola:~$ ash
> $ export JUNK=woozle
> $ sh -c 'echo $JUNK'
> woozle
> $ exit
> dak@lola:~$ dash
> $ export JUNK=woozle
> $ sh -c 'echo $JUNK'
> woozle
> $ exit
> 
> What problem are we talking about exactly, and with what shell?

$ export foo="bar baz" $ bash bash$ export JUNK=$foo bash$ sh -c 'echo "$JUNK"' bar baz bash$ exit exit $ ash ash$ export JUNK=$foo ash$ sh -c 'echo "$JUNK"' bar ash$ exit

The problem is $foo not being quoted on the RHS of the assignment of the export command: bash doesn't word-split, but ash does. Hence, *if* export VAR=VAL is used, always quote VAL.

-- Hannes