Re: variable assignments and parameter expansion in a single command

[Kevin F. Quinn]

On Sat, 24 Mar 2007 19:32:35 -0400
Chet Ramey <chet.ramey@case.edu> wrote:

> Kevin F. Quinn wrote:
> > my interpretation of
> > "variable assignment" is the `A=' part of the statement; i.e. that
> > the rhs of the assignment is expanded.
> 
> It's not; the entire word, including the portion after the `=', is a
> variable assignment.

ah; that explains the bash behaviour w.r.t. Posix.  I concur, as:

$ A= one

is two words due to the whitespace, so the rhs must be part of the word.

> None of these shells are or claim posix compliance.  The Solaris posix
> shell is /usr/xpg4/bin/sh (or something).  Of the others, dash is
> closest to Posix compliance.

FWIW I tried also /usr/xpg4/bin/sh (with the Belenix livecd, SunOS
5.11) and that shows the same as sh/ash/dash/bb.

> I don't get these results with bash-3.2.  I get "one two" for B both
> times with bash (and ksh93, incidentally).

Sorry; should have said - that was with bash-3.1.17; I should have
tried 3.2.  I see the same as you with bash-3.2 (and ksh-93s).


Thanks again for your patience :)

-- 
Kevin F. Quinn

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