10:25 a.m.
This bug report will be sent to the XEmacs Development Team,
not to your local site managers!!
Please write in English, because the XEmacs maintainers do not have
translators to read other languages for them.
Please describe as succinctly as possible:
- What happened.
- What you thought should have happened.
- Precisely what you were doing at the time.
Please also include any C or lisp back-traces that you may have.
================================================================
Dear Bug Team!
In edit-utils 1.88 the mouse-avoidance-fancy-hook problem is still
evident: activating a fancy mouse-avoidance mode causes errors
sometimes when switching between buffers (a buffer out of bounds
error). The patch below fixes it.
I've reported this (and supplied the fix) a few times before. If
there's something wrong with it, please tell me. I'm interested in
getting it right because at the moment I have to reapply it manually
every time edit-utils is updated.
I also note the misspelling "KEYSEQENCE" in the bottom line of the
patch.
--- avoid.el Sat Jun 29 09:56:19 2002
+++ avoid.el.new Thu Jun 27 09:34:58 2002
＠＠ -299,6 +299,7 ＠＠
(setq mouse-avoidance-state nil))))))
(defun mouse-avoidance-fancy-hook ()
+ (condition-case nil
;; Used for the "fancy" modes, ie jump et al.
(if (and (not executing-kbd-macro) ; don't check inside macro
(mouse-avoidance-kbd-command (this-command-keys))
＠＠ -312,7 +313,8 ＠＠
(selected-window)) (car old-pos))) ; move went awry
(set-mouse-position (car old-pos) ; sigh..
(car (cdr old-pos))
- (cdr (cdr old-pos)))))))
+ (cdr (cdr old-pos))))))
+ (error nil)))
(defun mouse-avoidance-kbd-command (key)
"Return t if the KEYSEQENCE is composed of keyboard events only.
================================================================
System Info to help track down your bug:
---------------------------------------
uname -a: Linux mnemosyne 2.4.18-4 #1 Thu May 2 18:10:25 EDT 2002 i686 unknown
./configure '--prefix=/home/rrt' '--with-mule'
XEmacs 21.4.8 "Honest Recruiter" configured for `i686-pc-linux'.
Compilation / Installation:
Source code location: /home/rrt/src/xemacs-21.4.8
Installation prefix: /home/rrt
Operating system description file: `s/linux.h'
Machine description file: `m/intel386.h'
Compiler: gcc -g -O3 -Wall -Wno-switch -Winline
-Wmissing-prototypes -Wsign-compare -Wshadow
Relocating allocator for buffers: no
GNU version of malloc: yes
- Using Doug Lea's new malloc from the GNU C Library.
Linking with `-z nocombreloc'.
- Consider configuring with --pdump.
Window System:
Compiling in support for the X window system:
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- X Windows libraries location: /usr/X11R6/lib
- Handling WM_COMMAND properly.
Using Lucid menubars.
Using Lucid scrollbars.
TTY:
Compiling in support for ncurses.
Compiling in support for GPM (General Purpose Mouse).
Images:
Compiling in support for GIF images (builtin).
Compiling in support for XPM images.
Compiling in support for PNG images.
Compiling in support for JPEG images.
Compiling in support for TIFF images.
Compiling in support for X-Face message headers.
Sound:
Compiling in support for sound (native).
Databases:
Compiling in support for Berkeley database.
Compiling in support for PostgreSQL.
- Using PostgreSQL header file: libpq-fe.h
- Using PostgreSQL V7 bindings.
Internationalization:
Compiling in support for Mule (multi-lingual Emacs).
Compiling in support for XIM (X11R5+ I18N input method).
- Using raw Xlib to provide XIM support.
Mail:
Compiling in support for "dot-locking" mail spool file locking method.
Other Features:
Inhibiting IPv6 canonicalization at startup.
Compiling in support for dynamic shared object modules.
Load-Path Lisp Shadows:
----------------------
(/home/rrt/elisp/winring
/home/rrt/lib/xemacs/xemacs-packages/lisp/edit-utils/winring
/home/rrt/elisp/setnu
/home/rrt/lib/xemacs/xemacs-packages/lisp/edit-utils/setnu)
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-------------------------
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--------
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lisp-float-type linux devices window-system base64)
Recent keystrokes:
-----------------
down down down down down down down down down down down
down down down down down down down down down down down
down down down down down down down down down down down
down down down down down down down down down down down
down down down down down down down down down down down
down down down down down down down down down down down
down down down down down down down down down down down
down down down down down down down down down down q
M-x r e p TAB o TAB r TAB x TAB RET
Recent messages (most recent first):
-----------------------------------
Loading xemacsbug...done
Loading xemacsbug...
Making completion list...
Making completion list...
Creating package list ...
Updated package-get database
Got 101 package-get database entries
Loading package-ui...done
Loading package-ui...
Loading package-get...done
Loading package-get...
History item: 1
Wrote /home/rrt/lib/xemacs/xemacs-packages/lisp/edit-utils/avoid.el
Matches: (if (and (not executing-kbd-macro) ; don't check inside macro
Matches: (defun mouse-avoidance-fancy-hook ()
Matches: (defun mouse-avoidance-fancy-hook ()
~/lib/xemacs/xemacs-packages/lisp/edit-utils/
Loading shell...done
Loading shell...
Quit
--
http://www.mupsych.org/rrt/ | Slow Pedestrian Crossing
4:15 a.m.
|--==> "RT" == Reuben Thomas <rrt(a)sc3d.org> writes:
RT> In edit-utils 1.88 the mouse-avoidance-fancy-hook problem is still
RT> evident: activating a fancy mouse-avoidance mode causes errors
RT> sometimes when switching between buffers (a buffer out of bounds
RT> error). The patch below fixes it.
s/fixes/hides/
Also, the patch you sent this time is different from the last one, and
looks wrong to me.
RT> I've reported this (and supplied the fix) a few times before. If
RT> there's something wrong with it, please tell me. I'm interested in
RT> getting it right because at the moment I have to reapply it manually
RT> every time edit-utils is updated.
See <http://list-archive.xemacs.org/xemacs-beta/200204/msg00130.html>
As yet, nobody has offered to look into the real problem. I'll put it
on my todo list, but at this stage I don't know when I'll be able to
get to it.
RT> I also note the misspelling "KEYSEQENCE" in the bottom line of the
RT> patch.
I also note that your patch didn't fix the misspelling. :-)
--
|---<Steve Youngs>---------------<GnuPG KeyID: 10D5C9C5>---|
| XEmacs - It's not just an editor. |
| It's a way of life. |
|------------------------------------<youngs(a)xemacs.org>---|
5:57 a.m.
Steve Youngs <youngs(a)xemacs.org> wrote:
As yet, nobody has offered to look into the real problem. I'll
put it
on my todo list, but at this stage I don't know when I'll be able to
get to it.
FWIW, the problem is with `mouse-position'. It should return a list
(WINDOW X . Y) giving the current mouse window and position, and
return (nil nil) when the cursor is not over a character, or not over
a window. But it appears to return (nil nil) nearly all the time.
I'm not sure whether `mouse-avoidance-nudge-mouse' switching frames
will "never happen", but I would be inclined to just let it happen.
Also, maybe when detecting mice events it is sufficient to just use
`mouse-event-p' ?
Rueben, does this work ?
(defun mouse-avoidance-fancy-hook ()
;; Used for the "fancy" modes, ie jump et al.
(if (and (not executing-kbd-macro) ; don't check inside macro
;; Don't do anything if last event was a mouse event.
(not (mouse-event-p last-input-event))
(mouse-avoidance-too-close-p (mouse-position)))
(mouse-avoidance-nudge-mouse)))
--
John Paul Wallington
7:05 a.m.
John Paul Wallington <jpw(a)shootybangbang.com> wrote:
Steve Youngs <youngs(a)xemacs.org> wrote:
> As yet, nobody has offered to look into the real problem. I'll put it
> on my todo list, but at this stage I don't know when I'll be able to
> get to it.
FWIW, the problem is with `mouse-position'. It should return a list
(WINDOW X . Y) giving the current mouse window and position, and
return (nil nil) when the cursor is not over a character, or not over
a window. But it appears to return (nil nil) nearly all the time.
Lies ?
Try this too:
--- avoid.el~ Sun Jun 30 01:02:27 2002
+++ avoid.el Tue Jul 2 06:54:25 2002
＠＠ -328,7 +328,7 ＠＠
(mouse-avoidance-too-close-p (mouse-position)))
(let ((old-pos (mouse-position)))
(mouse-avoidance-nudge-mouse)
- (if (not (eq (selected-frame) (car old-pos)))
+ (if (not (eq (selected-window) (car old-pos)))
;; This should never happen.
(apply 'set-mouse-position old-pos)))))
--
John Paul Wallington
7:48 a.m.
John Paul Wallington <jpw(a)shootybangbang.com> wrote:
John Paul Wallington <jpw(a)shootybangbang.com> wrote:
[...]
> FWIW, the problem is with `mouse-position'. It should
return a list
> (WINDOW X . Y) giving the current mouse window and position, and
> return (nil nil) when the cursor is not over a character, or not over
> a window. But it appears to return (nil nil) nearly all the time.
Lies ?
Try this too:
--- avoid.el~ Sun Jun 30 01:02:27 2002
+++ avoid.el Tue Jul 2 06:54:25 2002
＠＠ -328,7 +328,7 ＠＠
(mouse-avoidance-too-close-p (mouse-position)))
(let ((old-pos (mouse-position)))
(mouse-avoidance-nudge-mouse)
- (if (not (eq (selected-frame) (car old-pos)))
+ (if (not (eq (selected-window) (car old-pos)))
;; This should never happen.
(apply 'set-mouse-position old-pos)))))
also, consider this:
repeatedly eval the following `setq' until you get a (WINDOW X . Y)
return value ...
(setq foo (mouse-position))
then use `apply' like `mouse-avoidance-fancy-hook' does ...
(apply 'set-mouse-position foo)
=> Malformed list: (#<window on "*scratch*" 0xaa7> 14 . 8)
unlike the apply, this works with (WINDOW X . Y) values...
(set-mouse-position (car foo) (cadr foo) (cddr foo))
--
John Paul Wallington
7:39 a.m.
>>>> "John" == John Paul Wallington
<jpw(a)shootybangbang.com> writes:
John> Steve Youngs <youngs(a)xemacs.org> wrote:
> As yet, nobody has offered to look into the real problem.
I'll put it
> on my todo list, but at this stage I don't know when I'll be able to
> get to it.
John> FWIW, the problem is with `mouse-position'. It should return a list
John> (WINDOW X . Y) giving the current mouse window and position, and
John> return (nil nil) when the cursor is not over a character, or not over
John> a window. But it appears to return (nil nil) nearly all the time.
Ah, I've seen this problem (`mouse-position' to return (nil nil)) too
when I tried to make the 'menu key work like 'button3 in native
Windows XEmacs.
John> I'm not sure whether `mouse-avoidance-nudge-mouse' switching frames
John> will "never happen", but I would be inclined to just let it
happen.
John> Also, maybe when detecting mice events it is sufficient to just use
John> `mouse-event-p' ?
John> Rueben, does this work ?
John> (defun mouse-avoidance-fancy-hook ()
John> ;; Used for the "fancy" modes, ie jump et al.
John> (if (and (not executing-kbd-macro) ; don't check inside macro
John> ;; Don't do anything if last event was a mouse event.
John> (not (mouse-event-p last-input-event))
John> (mouse-avoidance-too-close-p (mouse-position)))
John> (mouse-avoidance-nudge-mouse)))
John> --
John> John Paul Wallington
--
Adrian Aichner
mailto:adrian＠xemacs.org
http://www.xemacs.org/
8:12 a.m.
John> FWIW, the problem is with `mouse-position'. It
should return a list
John> (WINDOW X . Y) giving the current mouse window and position, and
John> return (nil nil) when the cursor is not over a character, or not over
John> a window. But it appears to return (nil nil) nearly all the time.
Ah, I've seen this problem (`mouse-position' to return (nil nil)) too
when I tried to make the 'menu key work like 'button3 in native
Windows XEmacs.
Thanks for a confirmation! There are several fixes that IMHO should
be applied to the degenerate `mouse-avoidance-fancy-hook'. But
avoid.el lives in packages; should/can we accomodate XEmacs with
broken `mouse-position' ?
I guess the first thing is to work out the nature and extent of
`mouse-position' lossage.
--
John Paul Wallington
1:48 a.m.
|--==> "JPW" == John Paul Wallington <jpw(a)shootybangbang.com> writes:
JPW> Thanks for a confirmation! There are several fixes that IMHO should
JPW> be applied to the degenerate `mouse-avoidance-fancy-hook'. But
JPW> avoid.el lives in packages; should/can we accomodate XEmacs with
JPW> broken `mouse-position' ?
Is the problem in avoid.el or is it in 'mouse-position'? If avoid.el
does the right thing, don't "fix" it. Fix instead, the broken
'mouse-position'.
JPW> I guess the first thing is to work out the nature and extent of
JPW> `mouse-position' lossage.
Yep. John, are you able to work on this?
--
|---<Steve Youngs>---------------<GnuPG KeyID: 10D5C9C5>---|
| XEmacs - It's not just an editor. |
| It's a way of life. |
|------------------------------------<youngs(a)xemacs.org>---|
9:12 p.m.
Steve Youngs <youngs(a)xemacs.org> wrote:
|--==> "JPW" == John Paul Wallington
<jpw(a)shootybangbang.com> writes:
JPW> Thanks for a confirmation! There are several fixes that IMHO should
JPW> be applied to the degenerate `mouse-avoidance-fancy-hook'. But
JPW> avoid.el lives in packages; should/can we accomodate XEmacs with
JPW> broken `mouse-position' ?
Is the problem in avoid.el or is it in 'mouse-position'? If avoid.el
does the right thing, don't "fix" it. Fix instead, the broken
'mouse-position'.
JPW> I guess the first thing is to work out the nature and extent of
JPW> `mouse-position' lossage.
Yep. John, are you able to work on this?
`mouse-position' is only broken insofar as it faithfully obeys its
documentation...
"When the cursor is *not over a character*, or not over a window, the
return value is a list (nil nil)."
whereas `mouse-pixel-position' will return positional values if the
mouse cursor is over a window, because it doesn't care about
characters.
GNU Emacs' `mouse-position' returns positional values based on
standard character cells, even if the cursor isn't over a character.
We could cook up some package-specific brain-damage:
(defun mouse-avoidance-mouse-position ()
"I wanna lose! Return approximate current mouse window and position."
(let ((m-pos (mouse-position)))
(if (car m-pos)
m-pos
(setq m-pos (mouse-pixel-position))
(if (car m-pos)
(cons (car m-pos)
(cons (/ (cadr m-pos) (face-width 'default))
(/ (cddr m-pos) (face-height 'default))))
m-pos))))
I guess `mouse-position' could do something similar, or preferably
better. I don't know whether any XEmacs specific code relies upon
`mouse-position' returning (nil nil) when not over a character though.
--
John Paul Wallington
2:10 a.m.
>>>> "jpw" == John Paul Wallington
<jpw(a)shootybangbang.com> writes:
jpw> `mouse-position' is only broken insofar as it faithfully
jpw> obeys its documentation...
This figures.
jpw> GNU Emacs' `mouse-position' returns positional values based
jpw> on standard character cells, even if the cursor isn't over a
jpw> character.
Is this broken according to their doc, or do they have a different
specification for the function? Either way, someone should get in
touch with the GNU Emacs project to adjust this. I have my
preferences, see below.
jpw> I guess `mouse-position' could do something similar, or
jpw> preferably better. I don't know whether any XEmacs specific
jpw> code relies upon `mouse-position' returning (nil nil) when
jpw> not over a character though.
The code you wrote is broken for proportional fonts, and for many
historical character cell fonts. Consider any buffer containing
native widgets. (What _should_ `mouse-position' do in that case, I
wonder?) However, rather than make a new function or break
`mouse-position', I would add a new (keyword) argument :force-estimate,
which would estimate based on distance from current line-ending to
mouse xpos, and current baseline to mouse ypos
--
Institute of Policy and Planning Sciences http://turnbull.sk.tsukuba.ac.jp
University of Tsukuba Tennodai 1-1-1 Tsukuba 305-8573 JAPAN
My nostalgia for Icon makes me forget about any of the bad things. I don't
have much nostalgia for Perl, so its faults I remember. Scott Gilbert c.l.py
3:24 a.m.
jpw> GNU Emacs' `mouse-position' returns positional
values based
jpw> on standard character cells, even if the cursor isn't over a
jpw> character.
Is this broken according to their doc, or do they have a different
specification for the function?
It is fine according to their doc, and makes some sense because they
return (FRAME X . Y) rather than (WINDOW X . Y)
Presently, XEmacs avoid.el occaisionally wants to treat
(car (mouse-position)) as a frame :-/
Either way, someone should get in
touch with the GNU Emacs project to adjust this. I have my
preferences, see below.
jpw> I guess `mouse-position' could do something similar,
or
jpw> preferably better. I don't know whether any XEmacs specific
jpw> code relies upon `mouse-position' returning (nil nil) when
jpw> not over a character though.
The code you wrote is broken for proportional fonts, and for many
historical character cell fonts.
Well, hence "brain-damage", "I wanna lose!"...
Consider any buffer containing
native widgets. (What _should_ `mouse-position' do in that case, I
wonder?)
Dunno what it should do, it'll probably end up punting by returning
(nil nil).
However, rather than make a new function or break
`mouse-position', I would add a new (keyword) argument :force-estimate,
which would estimate based on distance from current line-ending to
mouse xpos, and current baseline to mouse ypos
That sounds neat.
--
John Paul Wallington
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Adrian Aichner -
John Paul Wallington -
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Stephen J. Turnbull -
Steve Youngs