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A list of bugs
From: |
Lars Hansen |
Subject: |
A list of bugs |
Date: |
Fri, 26 Jul 2002 23:34:52 +0200 |
Hi
I have collected a few bugs, described below.
expand-file-name crashes Emacs
------------------------------
Calling expand-file-name with default-directory set to nil, such as in
(let ((default-directory nil))
(expand-file-name "foo"))
makes Emacs crash without a word. I experience the problem with
Emacs 21.2 and 20.7 under MS Windows.
Microsoft Windows cannot shut down Emacs
----------------------------------------
Start Emacs (21.2 or 20.7) under MS Windows and try to close MS Windows.
Then you get an error message saying that MS Windows cannot shut down
Emacs. I suspect that Emacs does not handle the WM_QUERYENDSESSION (0x0011)
sent to applications by MS Windows to make them do things like ask the user
if unsaved files should be saved. I have not checked whether my suspicion
holds.
Font lock in multi line text strings
------------------------------------
Font lock in emacs-lisp-mode gets very confused when a multi line text string
(such as a doc string) have a line starting with 'with' or '(' (no quotes).
Redraw of MS Windows title bar
------------------------------
When running under MS Windows, the title bar of Emacs frames often flicker.
I seems they are redrawn unnecessarily. This problem is introduced with Emacs
21,
it is not there with Emacs 20.
Scroll/timer bug
----------------
I have reported this bug before -- however at that time I suspected the error
to be MS Windows specific. Now I have seen it on a Linux system as well.
When I scroll a window by holding down the the down-arrow button,
the scrolling motion have anoying jumps now and then. What happes
is, obviously, that the window gets recentered.
I suspect this problem has to do with timers.
It can be reproduce with Emacs 20 or 21 under MS Windows using a .emacs file
with the following lines:
(setq display-time-interval 1)
(display-time-mode t)
(setq scroll-margin 1)
(setq scroll-conservatively 1000)
Start Emacs and visit any relatively large file. Hold the down-arrow button
down. The window will the scroll upwards, and most of the time the point
stays, as i should, one row from the bottom of the window. But occasionally
it will go down to the bottom of the screen. If you have a fast keyboard
repeat rate you will see that the problem comes when the clock on the
mode line is updated. Not necessarily each second, but sometimes a few
seconds in a row. It probably depends on when keyboard events occur
related to the timer events. You can also reproduce the problem without
using automatic keyboard repeating, just by pressing the down-arrow about
say 50-100 times, waiting for the correct timing to occur. If you then stop,
when the problem comes, point stays at the bottom of the window.
I have the problem on a Suse Linux system as well -- here the problem comes
from something in the site file, but I don't know exactly what.
Lars Hansen
e-mail: larsh@math.ku.dk
- A list of bugs,
Lars Hansen <=