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Re: some more inline assignments / evaluation wrt POSIX


From: Andreas Schwab
Subject: Re: some more inline assignments / evaluation wrt POSIX
Date: Sat, 19 May 2007 08:51:03 +0200
User-agent: Gnus/5.110006 (No Gnus v0.6) Emacs/22.0.97 (gnu/linux)

Mike Frysinger <address@hidden> writes:

> testing with bash-3.2p17 here ...
>
> looking at these statements:
> K=dvb0.net A=${K#dvb} echo "$A"
> K=dvb0.net A=${K#dvb} ; echo "$A"
> K=dvb0.net A=${K#dvb} eval echo '$A'
>
> shouldnt "0.net" always be displayed ?  looks like A is always set properly 
> to "0.net", but in the first statement, $A gets expanded before the variable 
> assignments are processed

See
<http://www.opengroup.org/onlinepubs/009695399/utilities/xcu_chap02.html#tag_02_09_01>.
The command is expanded before the assignments are evaluated.

Andreas.

-- 
Andreas Schwab, SuSE Labs, address@hidden
SuSE Linux Products GmbH, Maxfeldstraße 5, 90409 Nürnberg, Germany
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