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bug#8122: 23.2.94; (prefer-coding-system 'utf-8) changes indentation beh


From: Steve Revilak
Subject: bug#8122: 23.2.94; (prefer-coding-system 'utf-8) changes indentation behavior for emacsclient
Date: Sat, 26 Feb 2011 09:31:16 -0500
User-agent: Mutt/1.5.20 (2009-06-14)

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 report will be posted to the address@hidden mailing list
and the gnu.emacs.bug news group, and at http://debbugs.gnu.org.

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':

In the 23.2.94 emacs pretest, the use of (prefer-coding-system 'utf-8)
changes text-mode indentation behavior with emacsclient/emacs --daemon.

Steps to reproduce

(1) Start emacs in daemon mode, as follows:
    env TMPDIR=$HOME/tmp emacs  -Q --eval "(prefer-coding-system 'utf-8)" 
--daemon

(2) Use emacsclient to connect to the server started in step (1),
    editing a new text file.
    rm -f a.txt
    env TMPDIR=$HOME/tmp emacsclient a.txt

(3) In the buffer for a.txt, type the lines that appear below.  Do not
    press return after typing "ccc"

aaa
bbb

  ccc

(4) With point at the end of line "ccc", press RETURN.  If "ccc"
    appeared in line 5 of the buffer, then the cursor will appear at
line 6, column 2.
Expected behavior: after pressing RETURN, the cursor should have
appeared line line 6, column 0.

(5) With the cursor at line 6, column 2.  Press ESC-\ (aka
    "delete-horizonal-space").   Now, the cursor appears in line 6,
    column 0

(6) With the cursor in line 6, column 0, press RETURN.  The cursor now
    appears in line 7, column 2.

Expected behavior: after pressing RETURN, the cursor should have
appeared in line 7, column 0.

Regression Notes:

* The behavior I've described appears to be specific to emacsclient.
For example, emacs -Q --eval "(prefer-coding-system 'utf-8)"
  does not exhibit the behavior I've described.

* The last emacs pretest that I used on this system was 23.2.91.
  23.2.91 did not exhibit this behavior.
  Later today, I will try building 23.2.92 and 23.2.93, to get see if
  the behavior appeared in those versions.

* I've observed this behavior on Mac OS X Darwin oatmeal 10.4.0 Darwin Kernel Version 10.4.0: Fri Apr 23 18:28:53 PDT 2010; root:xnu-1504.7.4~1/RELEASE_I386 i386

  and on OpenSUSE 11.3.
  Linux sunny 2.6.34.7-0.7-desktop #1 SMP PREEMPT 2010-12-13 11:13:53 +0100 
x86_64 x86_64 x86_64 GNU/Linux


If Emacs crashed, and you have the Emacs process in the gdb debugger,
please include the output from the following gdb commands:
    `bt full' and `xbacktrace'.
For information about debugging Emacs, please read the file
/Applications/Emacs.app/Contents/Resources/etc/DEBUG.


In GNU Emacs 23.2.94.1 (x86_64-apple-darwin10.4.0, NS apple-appkit-1038.32)
 of 2011-02-15 on oatmeal.ma.runwaynine.com
Windowing system distributor `Apple', version 10.3.1038
configured using `configure  '--with-ns''

Important settings:
  value of $LC_ALL: nil
  value of $LC_COLLATE: C
  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: nil
  value of $XMODIFIERS: nil
  locale-coding-system: nil
  default enable-multibyte-characters: t

Major mode: Emacs-Lisp

Minor modes in effect:
  diff-auto-refine-mode: t
  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
  font-lock-mode: t
  auto-encryption-mode: t
  auto-compression-mode: t
  line-number-mode: t
  transient-mark-mode: t

Recent input:
A ESC [ A ESC [ A ESC [ A ESC [ A ESC [ A ESC [ A ESC [ A ESC [ A ESC [ A ESC [ A ESC [ A ESC [ A ESC [ A ESC [ A ESC [ A ESC [ A ESC [ A ESC [ A ESC [ A ESC [ A ESC [ A ESC [ A ESC [ A ESC [ A ESC [ A ESC [ A ESC [ A ESC [ A ESC [ A ESC [ A ESC [ A ESC [ A ESC [ A ESC [ A ESC [ A ESC [ A ESC [ A ESC [ A ESC [ A ESC [ A ESC [ A ESC [ A ESC [ A ESC [ A ESC [ A ESC [ A ESC [ A ESC [ A ESC [ A ESC [ A ESC [ A ESC [ A ESC [ A ESC [ A ESC [ A ESC [ A ESC [ A ESC [ A ESC [ A ESC [ A ESC [ A ESC [ A ESC [ A ESC [ A ESC [ A ESC [ A ESC [ A ESC [ A ESC [ A ESC [ A ESC [ A ESC [ A ESC [ A ESC [ B ESC [ B ESC [ B ESC [ B ESC [ B ESC [ B ESC [ B ESC [ B ESC [ B ESC [ B ESC [ B ESC [ B ESC [ B ESC [ B ESC [ B ESC [ B DEL C-x C-s C-@ C-e ESC w C-x v u y e s RET C-x C-s ESC x r e p o r t - e m a c s TAB RET

Recent messages:
Saving file /Users/srevilak/.emacs...
Wrote /Users/srevilak/.emacs
Saving file /Users/srevilak/.emacs...
Wrote /Users/srevilak/.emacs
Saving file /Users/srevilak/.emacs...
Wrote /Users/srevilak/.emacs
Mark activated
Finding changes in /Users/srevilak/.emacs...
Reverting /Users/srevilak/.emacs...done
(No changes need to be saved)

Load-path shadows:
None found.

Features:
(shadow sort mail-extr message sendmail regexp-opt 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 log-edit ring pcvs-util
add-log diff-mode easy-mmode vc vc-dispatcher rect pp find-func help-fns
help-mode view debug vc-git 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)

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