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bug#20445: excessive redisplay / echo area resizing during byte-compilat


From: Glenn Morris
Subject: bug#20445: excessive redisplay / echo area resizing during byte-compilation
Date: Mon, 27 Apr 2015 17:31:28 -0400
User-agent: Gnus (www.gnus.org), GNU Emacs (www.gnu.org/software/emacs/)

Package: emacs
Version: 25.0.50

Current master on RHEL 7.1, Lucid toolkit, without toolkit-scroll-bars.

emacs -Q ./lisp/org/org.el

menu-bar, emacs-lisp, byte-compile this file

During compilation, the display flickers a lot.
Especially noticeable in the scroll-bar.
The echo area resizes itself a lot up and down rapidly, which is pretty
distracting.

Does not happen with M-x byte-recompile-file.

Does not happen with 24.5, even with the menu-bar.


(I have a vague memory something like this happened once before not so
long ago.)





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