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Re: 2 regressions related to PROMPT_COMMAND


From: Bob Proulx
Subject: Re: 2 regressions related to PROMPT_COMMAND
Date: Mon, 2 Mar 2009 09:22:03 -0700
User-agent: Mutt/1.5.13 (2006-08-11)

Andreas Schwab wrote:
> smallnow writes:
> > PROMPT_COMMAND='$(cd)'
> 
> Since $(cd) expands to nothing this is mostly a no-op.

True.  But he did say this as well:

> > I used $(cd) as a trivial command substitution, but any command
> > substitution seems to have the same effect.
> > I actually had some useful code including parameter expansions
> > going on in my PROMPT_COMMAND.

So the fact that it is mostly a noop accomplishes the effect Ian was
needing in order to produce a small bug case.  Perhaps he could have
used $(:) instead to make it more obvious?  (shrug)

Bob




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