[RFC][PATCH v4] emacs: Re-implement advance/rewind functions of notmuch-show-mode.

[David Edmondson]

On Sat, 24 Dec 2011 20:06:35 -0500, Austin Clements <amdragon at MIT.EDU> wrote:
> Awesome.  This looks significantly cleaner.  I think this is worth
> pushing for the comment you added to notmuch-show-advance alone.

Thanks.

> This definitely changes the behavior of rewind, but other than one
> case I point out below, I think what you have now is much closer to an
> inverse of advance.  It would be nice to have tests for rewind (looks
> like we don't have any right now), but it would seem counterproductive
> to write tests for the current rewind only to rewrite them for this
> rewind.

I'll write some tests.

> Tailing whitespace.

Will fix.

> > +     ((= start-of-message (point))
> > +      ;; The cursor is at the start of the current message - move to
> > +      ;; the previous open message.
> > +      (notmuch-show-previous-open-message))
> 
> This will jump to the beginning of the previous message if I'm at the
> beginning of a message.  I would expect rewind to show me the end of
> the previous message in this case.

That would definitely more closely be the inverse of how advance works,
but is it the most useful behaviour?
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