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Re: Please try Pmail

From: Stefan Monnier
Subject: Re: Please try Pmail
Date: Tue, 20 Jan 2009 23:18:10 -0500
User-agent: Gnus/5.13 (Gnus v5.13) Emacs/23.0.60 (gnu/linux)

>> The cleanest solution is to let build_annotations_unwind run some
>> buffer-local hook function (e.g. write-region-post-annotate-function),
>> which can either run kill-buffer, and/or re-narrow the buffer, and/or
>> kill previous buffers.  The current code already allows it via
>> kill-buffer-hook, but using that is ugly and will lead to
>> other surprises.
> The annotation functions would need to add functions to that hook when
> they are run.

Not really.  When they switch to another buffer, they may need to adjust
that hook in that buffer.  The default value could be `kill-buffer', so
as to preserve current behavior.

> Another idea: allow a new type of return value for annotation functions,
> and use this to keep track of buffers to be killed.  For example, allow
> annotation functions to return (FUN1 . FUN2), where FUN1 and FUN2 are
> lambda functions.  Then FUN1 is called during annotation, and FUN2 is
> called after other annotations have taken place.

Since they return a buffer already, we may as well store the FUN2
inside that buffer (as a buffer-local var).


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