From: Philipp Stephani <p.stephani2@gmail.com>
To: emacs-devel@gnu.org, Shea Levy <shea@shealevy.com>
Subject: Re: Propagating local variables?
Date: Sat, 19 May 2018 14:11:36 +0200 [thread overview]
Message-ID: <CAArVCkQQ1gKws8dEhOgk+dQ4qmhe1-2HoFCDyggE+uW=SZvpfQ@mail.gmail.com> (raw)
In-Reply-To: <m236ys7ls5.fsf@newartisans.com>
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John Wiegley <johnw@gnu.org> schrieb am Di., 15. Mai 2018 um 21:40 Uhr:
> I'd like to create a module, propagate.el, which defines a new class of
> buffer
> local variables: buffer local variables that propagate to any buffers or
> processes (in the case of exec-path and process-environment) created on
> behalf
> of the parent.
>
There is some pior art to this (namely, `default-directory'), but such a
facility needs to be very carefully designed because it changes fundamental
aspects of ELisp in a subtle way. For example, callers of
`with-temp-buffer' can currently assume that buffer-local variables are
take from their global defaults and not from the "parent" buffer. This
needs to stay that way. So probably such an inheritance facility should be
opt-in and not affect existing code.
Before jumping to implementation discussions, we should analyze the precise
requirements for such a facility and make sure it's not a breaking change.
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next prev parent reply other threads:[~2018-05-19 12:11 UTC|newest]
Thread overview: 24+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-05-15 19:37 Propagating local variables? John Wiegley
2018-05-16 3:42 ` Roland Winkler
2018-05-16 17:34 ` Stefan Monnier
2018-05-16 18:59 ` John Wiegley
2018-05-16 20:49 ` Stefan Monnier
2018-05-16 22:46 ` John Wiegley
2018-05-17 14:45 ` Stefan Monnier
2018-05-16 21:02 ` Roland Winkler
2018-05-17 3:00 ` Richard Stallman
2018-05-17 5:16 ` John Wiegley
2018-05-18 2:32 ` Richard Stallman
2018-05-18 4:28 ` John Wiegley
2018-05-18 20:15 ` Shea Levy
2018-05-19 3:19 ` Richard Stallman
2018-05-19 15:09 ` John Shahid
2018-05-20 3:19 ` Richard Stallman
2018-05-17 12:18 ` Shea Levy
2018-05-17 14:27 ` Clément Pit-Claudel
2018-05-18 2:33 ` Richard Stallman
2018-05-18 3:18 ` Stefan Monnier
2018-05-19 12:06 ` Philipp Stephani
2018-05-20 19:09 ` Clément Pit-Claudel
2018-05-19 12:11 ` Philipp Stephani [this message]
2018-05-19 19:12 ` Stefan Monnier
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