Package: emacs;
Reported by: Nicolas Goaziou <n.goaziou <at> gmail.com>
Date: Wed, 2 Mar 2011 17:16:02 UTC
Severity: normal
Found in version 23.2
Done: Eli Zaretskii <eliz <at> gnu.org>
Bug is archived. No further changes may be made.
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From: Nicolas Goaziou <n.goaziou <at> gmail.com> To: 8155 <at> debbugs.gnu.org Subject: bug#8155: 23.2; erratic cursor movement with visual-line-mode and wrap-prefix property Date: Wed, 02 Mar 2011 16:41:40 +0100
This bug report will be sent to the Free Software Foundation, not to your local site managers! Please write in English if possible, because the Emacs maintainers usually do not have translators to read other languages for them. Your bug report will be posted to the bug-gnu-emacs <at> gnu.org mailing list, and to the gnu.emacs.bug news group. Please describe exactly what actions triggered the bug and the precise symptoms of the bug. If you can, give a recipe starting from `emacs -Q': From `emacs -Q', C-x b whatever to open a new buffer. Then M-x visual-line-mode. Now fill a bit more than a screenfull of text without inserting a newline. Eventually use (put-text-property 1 (point-max) 'wrap-prefix " "). Now, going from (point-min), use C-n to move down. Near the end of that huge paragraph, C-n will not keep a constant column. In the same area, C-e and C-a will change line. C-p will go through the same path as C-n, thus not keeping the first column as well. Under certain conditions that I have yet to find (but related to that property and visual-line-mode), `next-line', when reaching the last line of the window, will put point back in the middle of the screen while keeping the same buffer portion visible (so it's a loopback, as the next part of the buffer is never shown). When it happens, the cursor is stuck forever in that loop if the user keep moving with `next-line'. This doesn't happen with C-p, and C-v can get out of the loop. In GNU Emacs 23.2.1 (x86_64-unknown-linux-gnu, GTK+ Version 2.20.0) of 2010-05-08 on pidsley.hoetzel.info Windowing system distributor `The X.Org Foundation', version 11.0.10904000 configured using `configure '--prefix=/usr' '--sysconfdir=/etc' '--libexecdir=/usr/lib' '--localstatedir=/var' '--mandir=/usr/share/man' '--without-sound' '-with-x-toolkit=gtk' 'CFLAGS=-march=x86-64 -mtune=generic -O2 -pipe -fno-optimize-sibling-calls' 'LDFLAGS=-Wl,--hash-style=gnu -Wl,--as-needed'' 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: fr_FR.utf8 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 tool-bar-mode: t menu-bar-mode: t file-name-shadow-mode: t global-font-lock-mode: t blink-cursor-mode: t auto-encryption-mode: t auto-compression-mode: t line-number-mode: t visual-line-mode: t transient-mark-mode: t Recent input: C-n C-n C-n C-n C-n C-n C-n C-n C-n C-n C-n C-n C-n C-n C-n C-n C-n C-n C-n C-n C-n C-n C-n C-n C-n C-n C-n C-n C-n C-n C-n C-n C-n C-n C-n C-n C-n C-n C-n C-n C-n C-n C-n C-n C-n C-n C-n C-n C-n C-p C-p C-p C-p C-p C-p C-p C-p C-p C-p C-p C-p C-p C-p C-p C-p C-p C-p C-p C-p C-p C-p C-p C-p C-p C-p C-p C-p C-p C-p C-p C-p C-p C-p C-p C-p C-n C-n C-n C-n C-n C-n C-n C-n C-n C-n C-n C-n C-n C-n C-n C-n C-n C-n C-n C-n C-n C-n C-n C-n C-n C-n C-n C-n C-n C-n C-n C-n C-n C-n C-n C-n C-n C-n C-n C-n C-n C-n C-n C-n C-n C-n C-n C-n C-n C-n C-n C-n C-n C-n C-n C-n C-n C-n C-n C-n C-p C-p C-p C-p C-p C-p C-p C-p C-p C-p C-p C-p C-p C-p C-p C-p C-p C-p C-p C-p C-p C-p C-p C-p C-p C-p C-p C-p C-p C-p C-p C-p C-p C-p C-p C-p C-p C-n C-n C-n C-n C-n C-n C-n C-n C-n C-n C-n C-n C-n C-n C-n C-n C-n C-n C-n C-n C-n C-n C-n C-n C-n C-n C-n C-n C-n C-n C-n C-n C-n C-n C-n C-n C-n C-n C-n C-n C-n C-n C-n C-n C-n C-n C-n C-n C-n C-n C-n C-n C-n C-n C-n C-n C-n C-n C-n C-p C-p C-p C-p C-p C-p C-p C-p C-p C-p C-p C-p C-p C-p C-p C-p C-p C-p C-p C-p C-p C-p C-p C-p C-p C-p C-p C-p C-p C-p C-p C-p C-p C-p C-p C-p M-t <f1> f C-g <f1> c C-n <f1> c C-n M-t M-x r e p o r t - e m <tab> <return> Recent messages: Visual-Line mode enabled Mark set [6 times] Scanning for dabbrevs...100% dabbrev-expand: No dynamic expansion for `put-text-pro' found Scanning for dabbrevs...100% dabbrev-expand: No dynamic expansion for `put-text-proper' found call-interactively: End of buffer nil Quit C-n runs the command next-line C-n runs the command next-line Load-path shadows: None found. Features: (shadow sort mail-extr message sendmail regexp-opt ecomplete rfc822 mml easymenu 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-fns dabbrev tooltip ediff-hook vc-hooks lisp-float-type mwheel x-win x-dnd font-setting 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 dbusbind system-font-setting font-render-setting gtk x-toolkit x multi-tty emacs) -- Nicolas Goaziou
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