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bug#15716: 24.3.50; redisplay bug for display-table update
From: |
Drew Adams |
Subject: |
bug#15716: 24.3.50; redisplay bug for display-table update |
Date: |
Fri, 25 Oct 2013 08:04:14 -0700 (PDT) |
This seems to be a regression; I have never seen it before.
See attached screenshots, from the same session. The bad one (NG) was
taken after `C-l', which should have taken care of any redisplay
problem. The good one (OK) was taken after then iconifying (thumbifying,
actually) and then restoring the frame - that took care of the display
problem.
The part of the displayed buffer that got messed up is the result of
modifying the display table for character ^L - what looks like a sunken
line of text "Section (Printable Page)" is in fact just a ^L character.
The code that does this is here:
http://www.emacswiki.org/emacs-en/download/pp-c-l.el.
This is the part of the code that updates the display table:
(lambda (window)
(let ((display-table (or (window-display-table window)
(make-display-table))))
(aset display-table ?\014 (and pretty-control-l-mode
(pp^L-^L-display-table-entry window)))
(set-window-display-table window display-table)))
BTW/FWIW - I think I have also noticed, with this build (perhaps other
recent builds too?), the need to hit `C-l' more often. Until now I have
probably used `C-l' only a few times over the last decade or so - hasn't
been needed. (In the old days it was needed much more often.)
HTH.
In GNU Emacs 24.3.50.1 (i686-pc-mingw32)
of 2013-10-19 on LEG570
Bzr revision: 114715 rgm@gnu.org-20131019023520-s8mwtib7xcx9e05w
Windowing system distributor `Microsoft Corp.', version 6.1.7601
Configured using:
`configure --enable-checking 'CFLAGS=-O0 -g3' CPPFLAGS=-DGLYPH_DEBUG=1'
throw-emacs-redisplay-bug-OK.png
Description: PNG image
throw-emacs-redisplay-bug-NG.png
Description: PNG image
- bug#15716: 24.3.50; redisplay bug for display-table update,
Drew Adams <=