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bug#17671: 24.3.91; RET on a link in *Help* buffer resizes *Help*
From: |
martin rudalics |
Subject: |
bug#17671: 24.3.91; RET on a link in *Help* buffer resizes *Help* |
Date: |
Tue, 03 Jun 2014 09:21:56 +0200 |
> C-h f line-move-visual RET
> C-x o
> move to the link under "simple.el" and type RET
> drag the mode line so that the lower window showing *Help* becomes
> smaller
`temp-buffer-resize-mode' would do that automatically.
> move cursor to the first call to vertical-motion
> C-h f RET
> C-x o
> move to the link under "C source code" and type RET
> the window showing *Help* is resized back to half the frame
It's due to this code in `display-buffer-use-some-window':
;; If the window was used by `display-buffer' before, try to
;; resize it to its old height but don't signal an error.
(when (and (listp quad)
(integerp (nth 3 quad))
(/= (nth 3 quad) (window-total-height window)))
(condition-case nil
(window-resize window (- (nth 3 quad) (window-total-height window)))
(error nil)))
> This is annoying. I like my *Help* windows to be small, but many
> times (but not always) they are resized when I need to request
> documentation of something else.
In the case at hand the *Help* window gets resized _implicitly_ because
the _other_ window is resized so the behavior is not tied to using help.
> Why cannot Emacs keep the size of that window?
I can't remember. Maybe to assure that the window used for displaying
`vertical-motion' is reasonably large (after all you could have dragged
the mode line to make the window showing *Help* larger). Maybe simply
to assure that when the same or a similar buffer is displayed in that
window again, one can continue to work with its previous size (I vaguely
remember that you requested something similar once wrt the position of
`point' in such case). Maybe it was also completlely unmotivated.
We can either remove that part or make it customizable. Since I never
use `display-buffer-use-some-window' I can't judge how offending the
behavior is.
martin