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Re: Diff could also show the changes within lines

From: Michael Heerdegen
Subject: Re: Diff could also show the changes within lines
Date: Wed, 19 Feb 2014 18:54:38 +0100
User-agent: Gnus/5.13 (Gnus v5.13) Emacs/24.3.50 (gnu/linux)

"Sebastien Vauban" <address@hidden>

> > In any case, the ugly solution of using an idle timer should always
> > work.  Not very cool, but also not worse than doing it manually.
> If you're talking of things such as:
>     (add-hook 'gnus-article-prepare-hook
>               (lambda ()
>                 (run-at-time 0.0 nil 'my--diff-make-fine-diffs-if-necessary)))
>     (add-hook 'gnus-article-mode-hook
>               (lambda ()
>                 (run-at-time 0.0 nil 'my--diff-make-fine-diffs-if-necessary)))
> I've tried them both with no success either...
> One question I've for the last 2 cases is "where is point?" when those
> functions are run?  If they're in the summary buffer, no luck for me, or
> will it be moved to the buffer where the hook is supposed to be applied?

You mean "which buffer is current?" (every buffer has a `point').  It's
easy: when the timer fires, there's no change of current buffer - there
is no environment restored or so.  The given function is called with the
given args - that's all.  Whatever buffer may be current then.

I would wrap your call in `gnus-with-article-buffer', and also use an
idle timer (`run-with-idle-timer').  If
`my--diff-make-fine-diffs-if-necessary' really works when called
explicitly, it should also work when called by the timer with the right
buffer current after Gnus has finished preparing the buffer.



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