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bug#9006: 24.0.50; Abort in unshow_buffer/kill-buffer

From: martin rudalics
Subject: bug#9006: 24.0.50; Abort in unshow_buffer/kill-buffer
Date: Sun, 10 Jul 2011 10:59:26 +0200
User-agent: Thunderbird (Windows/20090302)

> I just encountered a bad effect that I assume is caused by this change,
> since it didn't happen before:

Before means before the change that sets w->pointm?  Are you sure it's
not related to upgrading to the new window code?

> when I type `h'
> (gnus-summary-select-article-buffer) in the Gnus Summary buffer, this
> splits the window and selects the Article buffer as it's supposed to,
> but in the Summary buffer point simultaneously moves to point-min; it's
> supposed to stay put.  The same thing happens when I have split windows
> with the Summary and Article buffer and in the former type C-x o
> (other-window).  I haven't been able to reproduce this with other
> buffers, but only with Gnus Summary.  Still no abort, but this effect
> means the fix -- if it is one -- at least needs further tuning.

Just to make sure: This does not happen with the w->pointm hack?  If so,
that is if it does not happen with the w->pointm hack, then it's
obviously what I mentioned in the last post: We set window-point to 1
for the temporary buffer but we don't reset it back to the old buffer's
position upon exiting `vertical-motion'.  Rather _you_ did set the old
buffer's window point to 1 and it stays put there when you set w->buffer
to old_buffer upon exiting `vertical-motion'.  (Note that
`vertical-motion' gets called by `split-window-above-each-other'.)


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