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To: gentoo-dev@g.o
From: Dan Douglas <ormaaj@...>
Subject: Re: lastpipe
Date: Fri, 25 May 2012 19:11:35 -0500
On Friday, May 25, 2012 11:33:43 PM Ciaran McCreesh wrote:
> On Fri, 25 May 2012 15:02:32 -0500
> Dan Douglas <ormaaj@...> wrote:
> > If it were made a policy now that ebuilds and eclasses cannot depend
> > upon the subshell (for example, to set temporary positional
> > parameters or isolate temporary variables), then maybe someday in the
> > distant future this could be made the default, and in the meantime,
> > an option for those with new enough shells. Since dependence on the
> > subshell isn't very common, I think this should be feasible, and of
> > course as a workaround all that's required is to wrap any such
> > commands in parentheses.
> We'll be able to turn that on in a controlled way in EAPI 6.

Ah didn't know that. That's a solution for ebuilds anyway. How about for eclasses and user bashrc files? Does whatever EAPI setting is in effect for a particular ebuild apply to them? It isn't really worth toggling it on and off for individual files or functions in order to not break certain eclasses that conflict.

> Having
> said that, if we're reaching the point where speed of bash code is
> at all relevant, then ebuilds are doing something wrong...

That point was reached when someone decided a custom Bash parser just for ebuilds was necessary. :)

Dan Douglas
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-- Dan Douglas
Re: lastpipe
-- Ciaran McCreesh
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Updated Jun 29, 2012

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