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From: Stefan Monnier <monnier@iro.umontreal.ca>
To: help-gnu-emacs@gnu.org
Subject: Re: Return values of (find-file-noselect), etc.
Date: Tue, 08 Jan 2019 13:07:07 -0500	[thread overview]
Message-ID: <jwvo98rm3du.fsf-monnier+gmane.emacs.help@gnu.org> (raw)
In-Reply-To: db56d588-939f-ca9d-7d4e-123fec681dc0@gmail.com

>>> Either way, that's not what I'm seeing. Should this be recorded as a bug?
>> I think it's a bug for a major mode function to change the current
>> buffer, so what you're seeing is likely the result of find-file-noselect
>> not protecting itself against such misbehaving major modes ;-)
> Hmmm. I suppose I could make (cpio-mode) a function instead of a mode,

I think using buffer-swap-text, you should be able to fairly easily make
it so that cpio-mode is a proper major mode (e.g. doesn't change
current-buffer) and yet moves the current buffer's contents to some
auxiliary buffer and puts the dired-style interface in the current buffer.
(and setup a change-major-mode-hook to reverse this if the user decides
to change the major mode to something else like fundamental-mode).


        Stefan




  reply	other threads:[~2019-01-08 18:07 UTC|newest]

Thread overview: 7+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-01-06 19:06 Return values of (find-file-noselect), etc Douglas Lewan
2019-01-06 22:13 ` Stefan Monnier
2019-01-07  0:49   ` Douglas Lewan
2019-01-07  3:06     ` Stefan Monnier
2019-01-07  7:36       ` Douglas Lewan
2019-01-08 18:07         ` Stefan Monnier [this message]
2019-01-08 19:12           ` Douglas Lewan

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