Re: variable assignments and parameter expansion in a single command

[Andreas Schwab]

Mike Frysinger <vapier@gentoo.org> writes:

> i'm trying to determine whether POSIX allows for utilizing of variables in 
> simple commands that were defined earlier in the same command ... in other 
> words, whether this snippet:
> unset A B
> A="moo" B="$A more"
> echo $A , $B
> should display moo twice or just once:
> moo , moo more
> moo ,  more

"Each variable assignment shall be expanded [...] prior to assigning the
value."

That means that each assignment is supposed to be expanded _and_ performed
in the same step while iterating over them.

Andreas.

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Andreas Schwab, SuSE Labs, schwab@suse.de
SuSE Linux Products GmbH, Maxfeldstraße 5, 90409 Nürnberg, Germany
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