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Re: some more inline assignments / evaluation wrt POSIX


From: Chet Ramey
Subject: Re: some more inline assignments / evaluation wrt POSIX
Date: Sun, 20 May 2007 16:17:16 -0400
User-agent: Thunderbird 2.0.0.0 (Macintosh/20070326)

Mike Frysinger wrote:
> 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

As Andreas said, variable assignments preceding a command name are
deferred until the rest of the words in the command are expanded.

Chet


-- 
``The lyf so short, the craft so long to lerne.'' - Chaucer
                       Live Strong.  No day but today.
Chet Ramey, ITS, CWRU    address@hidden    http://cnswww.cns.cwru.edu/~chet/




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