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bug#53398: 29.0.50; narrow-to-region induces buffer recentering
From: |
Eli Zaretskii |
Subject: |
bug#53398: 29.0.50; narrow-to-region induces buffer recentering |
Date: |
Sun, 23 Jan 2022 08:08:10 +0200 |
> From: Jose A Ortega Ruiz <jao@gnu.org>
> Date: Sat, 22 Jan 2022 19:13:21 +0000
> Cc: 53398@debbugs.gnu.org
>
> (defun text-with-right-padding (text)
> (let* ((len (+ (string-pixel-width text) (string-pixel-width " ")))
> (padding (propertize "-"
> 'display
> `(space :align-to (- (+ right
> right-margin) (,len))))))
> (concat padding text " ")))
>
> (defun custom-set-message (msg)
> (when msg (concat msg (text-with-right-padding (buffer-name)))))
>
> (setq set-message-function #'custom-set-message)
>
> text-with-right-padding is copied directly from a message in emacs-devel
> and i don't fully understand it (in particular, i cannot make sense of
> the parens around (,len)), but it does its intended job: with
> custom-set-message one sees messages displayed with the current buffer
> name attached and padded to the right.
These customizations cause the echo-area message become too long for a
single screen line. That in turn causes Emacs to resize the
mini-window to show the echo-area message, and that indirectly causes
the recentering you see.
So I don't think there's anything in this behavior that isn't
expected. If you want to prevent recentering, try setting
max-mini-window-height to 1, so that mini-windows aren't resized. (I
didn't try it, though.) Or just don't ask the echo-area messages to
display so much stuff.
- bug#53398: 29.0.50; narrow-to-region induces buffer recentering, Jose A Ortega Ruiz, 2022/01/20
- bug#53398: 29.0.50; narrow-to-region induces buffer recentering, Eli Zaretskii, 2022/01/21
- bug#53398: 29.0.50; narrow-to-region induces buffer recentering, Lars Ingebrigtsen, 2022/01/21
- bug#53398: 29.0.50; narrow-to-region induces buffer recentering, Jose A Ortega Ruiz, 2022/01/22
- bug#53398: 29.0.50; narrow-to-region induces buffer recentering,
Eli Zaretskii <=
- bug#53398: 29.0.50; narrow-to-region induces buffer recentering, Lars Ingebrigtsen, 2022/01/23
- bug#53398: 29.0.50; narrow-to-region induces buffer recentering, Jose A Ortega Ruiz, 2022/01/23
- bug#53398: 29.0.50; narrow-to-region induces buffer recentering, Lars Ingebrigtsen, 2022/01/23
- bug#53398: 29.0.50; narrow-to-region induces buffer recentering, Eli Zaretskii, 2022/01/23
- bug#53398: 29.0.50; narrow-to-region induces buffer recentering, Jose A Ortega Ruiz, 2022/01/23