|
From: | GNU bug Tracking System |
Subject: | [debbugs-tracker] bug#11484: closed (23.4; Scrolling leaves traces of old text behind) |
Date: | Sun, 21 Oct 2012 19:10:01 +0000 |
Your message dated Sun, 21 Oct 2012 21:07:11 +0200 with message-id <address@hidden> and subject line Re: bug#11484: 23.4; Scrolling leaves traces of old text behind has caused the debbugs.gnu.org bug report #11484, regarding 23.4; Scrolling leaves traces of old text behind to be marked as done. (If you believe you have received this mail in error, please contact address@hidden) -- 11484: http://debbugs.gnu.org/cgi/bugreport.cgi?bug=11484 GNU Bug Tracking System Contact address@hidden with problems
--- Begin Message ---Subject: 23.4; Scrolling leaves traces of old text behind Date: Tue, 15 May 2012 15:02:01 -0700 Bug: Scrolling can leave behind traces of old text. The traces appear to be cyan outlines of the right hand side of characters which previously occupied the same location. For example, a "Y" will leave behind a small cyan dot from its upper right, an "A" will leave behind a small cyan dot from its lower right. Steps to reproduce: 1) /Applications/Emacs.app/Contents/MacOS/Emacs -Q 2) C-x C-f helix.pqr [Ret] 3) Rapidly scroll up and down with two-finger drag gesture I have attached the file helix.pqr, for which the effect is very pronounced, and a screenshot faithfully reproducing the effect. Note the small cyan marks on the left of many numbers and letters. This version of emacs came from http://emacsformacosx.com/ In GNU Emacs 23.4.1 (x86_64-apple-darwin, NS apple-appkit-1038.36) of 2012-01-29 on bob.porkrind.org Windowing system distributor `Apple', version 10.3.1138 configured using `configure '--host=x86_64-apple-darwin' '--build=i686-apple-darwin' '--with-ns' 'build_alias=i686-apple-darwin' 'host_alias=x86_64-apple-darwin' 'CC=gcc -mmacosx-version-min=10.5'' Important settings: value of $LC_ALL: nil value of $LC_COLLATE: nil value of $LC_CTYPE: nil value of $LC_MESSAGES: nil value of $LC_MONETARY: nil value of $LC_NUMERIC: nil value of $LC_TIME: nil value of $LANG: en_US.UTF-8 value of $XMODIFIERS: nil locale-coding-system: utf-8-unix default enable-multibyte-characters: t Major mode: Fundamental Minor modes in effect: tooltip-mode: t mouse-wheel-mode: t menu-bar-mode: t file-name-shadow-mode: t global-font-lock-mode: t font-lock-mode: t blink-cursor-mode: t auto-encryption-mode: t auto-compression-mode: t line-number-mode: t transient-mark-mode: t Recent input: <wheel-up> <double-wheel-up> <triple-wheel-up> <triple-wheel-up> <triple-wheel-up> <triple-wheel-up> <triple-wheel-up> <triple-wheel-up> <triple-wheel-up> <triple-wheel-up> <triple-wheel-up> <wheel-down> <double-wheel-down> <triple-wheel-down> <triple-wheel-down> <triple-wheel-down> <triple-wheel-down> <triple-wheel-down> <triple-wheel-down> <triple-wheel-down> <triple-wheel-down> <triple-wheel-down> <triple-wheel-down> <triple-wheel-down> <triple-wheel-down> <triple-wheel-down> <triple-wheel-down> <triple-wheel-down> <wheel-up> <double-wheel-up> <triple-wheel-up> <triple-wheel-up> <triple-wheel-up> <triple-wheel-up> <triple-wheel-up> <triple-wheel-up> <triple-wheel-up> <triple-wheel-up> <triple-wheel-up> <triple-wheel-up> <triple-wheel-up> <triple-wheel-up> <triple-wheel-up> <wheel-down> <double-wheel-down> <triple-wheel-down> <wheel-up> <double-wheel-up> <triple-wheel-up> <wheel-up> <double-wheel-up> <wheel-down> <double-wheel-down> <triple-wheel-down> <triple-wheel-down> <triple-wheel-down> <triple-wheel-down> <triple-wheel-down> <triple-wheel-down> <triple-wheel-down> <triple-wheel-down> <triple-wheel-down> <triple-wheel-down> <triple-wheel-down> <triple-wheel-down> <triple-wheel-down> <triple-wheel-down> <triple-wheel-down> <triple-wheel-down> <triple-wheel-down> <wheel-down> <double-wheel-down> <wheel-down> <double-wheel-down> <triple-wheel-down> <triple-wheel-down> <triple-wheel-down> <triple-wheel-down> <triple-wheel-down> <triple-wheel-down> <triple-wheel-down> <triple-wheel-down> <triple-wheel-down> <wheel-up> <double-wheel-up> <triple-wheel-up> <triple-wheel-up> <triple-wheel-up> <triple-wheel-up> <triple-wheel-up> <triple-wheel-up> <triple-wheel-up> <triple-wheel-up> <triple-wheel-up> <wheel-up> <double-wheel-up> <wheel-down> <wheel-down> <double-wheel-down> <wheel-up> <wheel-down> <wheel-down> <wheel-up> <double-wheel-up> <wheel-up> <wheel-up> <double-wheel-up> <triple-wheel-up> <up> <up> <up> <up> <up> <up> <up> <up> <up> <up> <up> <up> <up> <up> <up> <up> <up> <up> <up> <up> <up> <up> <up> <up> <up> <up> <up> <up> <up> <up> <up> <up> <up> <up> <up> <up> <up> <up> <up> <up> <up> <up> <up> <up> <up> <up> <up> <up> <up> <up> <up> <up> <up> <up> <up> <up> <up> <up> <up> <up> <up> <up> <up> <up> <up> <up> <up> <up> <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> C-x b <return> <wheel-up> <double-wheel-up> <triple-wheel-up> <triple-wheel-up> <wheel-down> <double-wheel-down> <triple-wheel-down> <triple-wheel-down> <triple-wheel-down> <triple-wheel-down> <triple-wheel-down> <wheel-up> <double-wheel-up> <triple-wheel-up> <triple-wheel-up> <wheel-down> <double-wheel-down> <triple-wheel-down> <triple-wheel-down> <triple-wheel-down> <triple-wheel-down> <wheel-up> <double-wheel-up> <wheel-down> <double-wheel-down> <triple-wheel-down> <wheel-down> <double-wheel-down> <triple-wheel-down> <wheel-up> <double-wheel-up> <triple-wheel-up> <triple-wheel-up> <wheel-down> <double-wheel-down> <triple-wheel-down> <triple-wheel-down> <triple-wheel-down> <triple-wheel-down> <wheel-up> <double-wheel-up> <triple-wheel-up> <triple-wheel-up> <triple-wheel-up> <wheel-down> <double-wheel-down> <triple-wheel-down> <triple-wheel-down> <triple-wheel-down> <triple-wheel-down> <triple-wheel-down> <wheel-up> <double-wheel-up> <triple-wheel-up> <triple-wheel-up> <wheel-down> <double-wheel-down> <triple-wheel-down> <wheel-up> <double-wheel-up> <triple-wheel-up> <wheel-down> <double-wheel-down> <wheel-down> <double-wheel-down> M-x b u g <tab> <backspace> <backspace> <backspace> <backspace> <backspace> <backspace> <backspace> <backspace> <backspace> <backspace> <backspace> <backspace> <backspace> <backspace> r e p <tab> o r <tab> <return> Recent messages: Saving file /Users/fvm/.emacs... Wrote /Users/fvm/.emacs byte-code: Beginning of buffer [8 times] byte-code: End of buffer [13 times] byte-code: Beginning of buffer [13 times] byte-code: End of buffer [26 times] byte-code: Beginning of buffer [14 times] byte-code: End of buffer [2 times] Making completion list... byte-code: End of buffer [4 times] Load-path shadows: None found. Features: (shadow sort mail-extr message ecomplete rfc822 mml mml-sec password-cache mm-decode mm-bodies mm-encode mailcap mail-parse rfc2231 rfc2047 rfc2045 qp ietf-drums mailabbrev nnheader gnus-util netrc time-date mm-util mail-prsvr gmm-utils wid-edit mailheader canlock sha1 hex-util hashcash mail-utils emacsbug help-mode view vc-hg cc-mode cc-fonts cc-menus cc-cmds cc-styles cc-align cc-engine cc-vars cc-defs regexp-opt tooltip ediff-hook vc-hooks lisp-float-type mwheel ns-win easymenu tool-bar dnd fontset image fringe lisp-mode register page menu-bar rfn-eshadow timer select scroll-bar mldrag mouse jit-lock font-lock syntax facemenu font-core frame cham georgian utf-8-lang misc-lang vietnamese tibetan thai tai-viet lao korean japanese hebrew greek romanian slovak czech european ethiopic indian cyrillic chinese case-table epa-hook jka-cmpr-hook help simple abbrev loaddefs button minibuffer faces cus-face files text-properties overlay md5 base64 format env code-pages mule custom widget hashtable-print-readable backquote make-network-process ns multi-tty emacs)helix.pqr
Description: Binary dataScreen Shot 2012-05-15 at 2.54.44 PM.png
Description: PNG image
--- End Message ---
--- Begin Message ---Subject: Re: bug#11484: 23.4; Scrolling leaves traces of old text behind Date: Sun, 21 Oct 2012 21:07:11 +0200
Hello. I have fixed this in the trunk, but I'm not satisfied with the solution, but it will have to do for now.The problem has to do with LCD-smoothing. As you can see in the attached pictureone pixel of the A in the lower right corner extends in to the box for T. As Emacs does not know about these pixels, when we write a Y over the A, the pixel remains.You can see the same effect when Y is replaced with for example A. The top right part of the Y has an extra pixel in the next character box, that remains.The current solution is to turn off LCD-smoothing. A better solution would be to draw the whole line every time. Or somehow keep track of adjacent characters that needs to be redrawn. But that may involve the display engine and is a bigger task.Jan D.16 maj 2012 kl. 00:02 skrev Frank Marcoline <address@hidden>:Bug: Scrolling can leave behind traces of old text.
The traces appear to be cyan outlines of the right hand
side of characters which previously occupied the same location.
For example, a "Y" will leave behind a small cyan dot from its upper
right, an "A" will leave behind a small cyan dot from its lower right.
Steps to reproduce:
1) /Applications/Emacs.app/Contents/MacOS/Emacs -Q
2) C-x C-f helix.pqr [Ret]
3) Rapidly scroll up and down with two-finger drag gesture
I have attached the file helix.pqr, for which the effect is
very pronounced, and a screenshot faithfully reproducing
the effect. Note the small cyan marks on the left of
many numbers and letters.
This version of emacs came from http://emacsformacosx.com/
In GNU Emacs 23.4.1 (x86_64-apple-darwin, NS apple-appkit-1038.36)
of 2012-01-29 on bob.porkrind.org
Windowing system distributor `Apple', version 10.3.1138
configured using `configure '--host=x86_64-apple-darwin'
'--build=i686-apple-darwin' '--with-ns'
'build_alias=i686-apple-darwin' 'host_alias=x86_64-apple-darwin'
'CC=gcc -mmacosx-version-min=10.5''
Important settings:
value of $LC_ALL: nil
value of $LC_COLLATE: nil
value of $LC_CTYPE: nil
value of $LC_MESSAGES: nil
value of $LC_MONETARY: nil
value of $LC_NUMERIC: nil
value of $LC_TIME: nil
value of $LANG: en_US.UTF-8
value of $XMODIFIERS: nil
locale-coding-system: utf-8-unix
default enable-multibyte-characters: t
Major mode: Fundamental
Minor modes in effect:
tooltip-mode: t
mouse-wheel-mode: t
menu-bar-mode: t
file-name-shadow-mode: t
global-font-lock-mode: t
font-lock-mode: t
blink-cursor-mode: t
auto-encryption-mode: t
auto-compression-mode: t
line-number-mode: t
transient-mark-mode: t
Recent input:
<wheel-up> <double-wheel-up> <triple-wheel-up> <triple-wheel-up>
<triple-wheel-up> <triple-wheel-up> <triple-wheel-up>
<triple-wheel-up> <triple-wheel-up> <triple-wheel-up>
<triple-wheel-up> <wheel-down> <double-wheel-down>
<triple-wheel-down> <triple-wheel-down> <triple-wheel-down>
<triple-wheel-down> <triple-wheel-down> <triple-wheel-down>
<triple-wheel-down> <triple-wheel-down> <triple-wheel-down>
<triple-wheel-down> <triple-wheel-down> <triple-wheel-down>
<triple-wheel-down> <triple-wheel-down> <triple-wheel-down>
<wheel-up> <double-wheel-up> <triple-wheel-up> <triple-wheel-up>
<triple-wheel-up> <triple-wheel-up> <triple-wheel-up>
<triple-wheel-up> <triple-wheel-up> <triple-wheel-up>
<triple-wheel-up> <triple-wheel-up> <triple-wheel-up>
<triple-wheel-up> <triple-wheel-up> <wheel-down> <double-wheel-down>
<triple-wheel-down> <wheel-up> <double-wheel-up> <triple-wheel-up>
<wheel-up> <double-wheel-up> <wheel-down> <double-wheel-down>
<triple-wheel-down> <triple-wheel-down> <triple-wheel-down>
<triple-wheel-down> <triple-wheel-down> <triple-wheel-down>
<triple-wheel-down> <triple-wheel-down> <triple-wheel-down>
<triple-wheel-down> <triple-wheel-down> <triple-wheel-down>
<triple-wheel-down> <triple-wheel-down> <triple-wheel-down>
<triple-wheel-down> <triple-wheel-down> <wheel-down>
<double-wheel-down> <wheel-down> <double-wheel-down>
<triple-wheel-down> <triple-wheel-down> <triple-wheel-down>
<triple-wheel-down> <triple-wheel-down> <triple-wheel-down>
<triple-wheel-down> <triple-wheel-down> <triple-wheel-down>
<wheel-up> <double-wheel-up> <triple-wheel-up> <triple-wheel-up>
<triple-wheel-up> <triple-wheel-up> <triple-wheel-up>
<triple-wheel-up> <triple-wheel-up> <triple-wheel-up>
<triple-wheel-up> <wheel-up> <double-wheel-up> <wheel-down>
<wheel-down> <double-wheel-down> <wheel-up> <wheel-down>
<wheel-down> <wheel-up> <double-wheel-up> <wheel-up>
<wheel-up> <double-wheel-up> <triple-wheel-up> <up>
<up> <up> <up> <up> <up> <up> <up> <up> <up> <up> <up>
<up> <up> <up> <up> <up> <up> <up> <up> <up> <up> <up>
<up> <up> <up> <up> <up> <up> <up> <up> <up> <up> <up>
<up> <up> <up> <up> <up> <up> <up> <up> <up> <up> <up>
<up> <up> <up> <up> <up> <up> <up> <up> <up> <up> <up>
<up> <up> <up> <up> <up> <up> <up> <up> <up> <up> <up>
<up> <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> C-x b <return>
<wheel-up> <double-wheel-up> <triple-wheel-up> <triple-wheel-up>
<wheel-down> <double-wheel-down> <triple-wheel-down>
<triple-wheel-down> <triple-wheel-down> <triple-wheel-down>
<triple-wheel-down> <wheel-up> <double-wheel-up> <triple-wheel-up>
<triple-wheel-up> <wheel-down> <double-wheel-down>
<triple-wheel-down> <triple-wheel-down> <triple-wheel-down>
<triple-wheel-down> <wheel-up> <double-wheel-up> <wheel-down>
<double-wheel-down> <triple-wheel-down> <wheel-down>
<double-wheel-down> <triple-wheel-down> <wheel-up>
<double-wheel-up> <triple-wheel-up> <triple-wheel-up>
<wheel-down> <double-wheel-down> <triple-wheel-down>
<triple-wheel-down> <triple-wheel-down> <triple-wheel-down>
<wheel-up> <double-wheel-up> <triple-wheel-up> <triple-wheel-up>
<triple-wheel-up> <wheel-down> <double-wheel-down>
<triple-wheel-down> <triple-wheel-down> <triple-wheel-down>
<triple-wheel-down> <triple-wheel-down> <wheel-up>
<double-wheel-up> <triple-wheel-up> <triple-wheel-up>
<wheel-down> <double-wheel-down> <triple-wheel-down>
<wheel-up> <double-wheel-up> <triple-wheel-up> <wheel-down>
<double-wheel-down> <wheel-down> <double-wheel-down>
M-x b u g <tab> <backspace> <backspace> <backspace>
<backspace> <backspace> <backspace> <backspace> <backspace>
<backspace> <backspace> <backspace> <backspace> <backspace>
<backspace> r e p <tab> o r <tab> <return>
Recent messages:
Saving file /Users/fvm/.emacs...
Wrote /Users/fvm/.emacs
byte-code: Beginning of buffer [8 times]
byte-code: End of buffer [13 times]
byte-code: Beginning of buffer [13 times]
byte-code: End of buffer [26 times]
byte-code: Beginning of buffer [14 times]
byte-code: End of buffer [2 times]
Making completion list...
byte-code: End of buffer [4 times]
Load-path shadows:
None found.
Features:
(shadow sort mail-extr message ecomplete rfc822 mml mml-sec
password-cache mm-decode mm-bodies mm-encode mailcap mail-parse rfc2231
rfc2047 rfc2045 qp ietf-drums mailabbrev nnheader gnus-util netrc
time-date mm-util mail-prsvr gmm-utils wid-edit mailheader canlock sha1
hex-util hashcash mail-utils emacsbug help-mode view vc-hg cc-mode
cc-fonts cc-menus cc-cmds cc-styles cc-align cc-engine cc-vars cc-defs
regexp-opt tooltip ediff-hook vc-hooks lisp-float-type mwheel ns-win
easymenu tool-bar dnd fontset image fringe lisp-mode register page
menu-bar rfn-eshadow timer select scroll-bar mldrag mouse jit-lock
font-lock syntax facemenu font-core frame cham georgian utf-8-lang
misc-lang vietnamese tibetan thai tai-viet lao korean japanese hebrew
greek romanian slovak czech european ethiopic indian cyrillic chinese
case-table epa-hook jka-cmpr-hook help simple abbrev loaddefs button
minibuffer faces cus-face files text-properties overlay md5 base64
format env code-pages mule custom widget hashtable-print-readable
backquote make-network-process ns multi-tty emacs)
<helix.pqr><Screen Shot 2012-05-15 at 2.54.44 PM.png>
--- End Message ---
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