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bug#15385: [Eshell] Directory completion overwrites preceding characters

From: Joost Kremers
Subject: bug#15385: [Eshell] Directory completion overwrites preceding characters
Date: Sun, 15 Sep 2013 16:11:44 +0200
User-agent: mu4e; emacs 24.3.1

This bug report will be sent to the Bug-GNU-Emacs mailing list
and the GNU bug tracker at debbugs.gnu.org.  Please check that
the From: line contains a valid email address.  After a delay of up
to one day, you should receive an acknowledgment at that address.

Please write in English if possible, as the Emacs maintainers
usually do not have translators for other languages.

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':


Starting from `emacs -Q', if I do

   (setq eshell-cmpl-ignore-case t)

and then start up a shell, TAB completion behaves incorrectly under some

Specifically, I type a command such as:

    $ cp ~/Dropbox/Work/Reading/Wilbur_Martinez2002.pdf ~/Dro

At this point, I hit TAB to complete `~/Dro' and get:

    $ cp ~/Dropbox/Work/Reading/Wilbur_Martine/home/joost/Dropbox/

Note that the problem does *not* occur with the first file path. If I
hit TAB to complete

    $ cp ~/Dro

then completion produces the correct result:

    $ cp ~/Dropbox/

It seems the problem occurs when the file path is the second argument on
the command line, because if I type:

    $ ls ~/Dropbox/Work/Literature/k/kim2002.pdf ~/dro

and hit TAB to complete, the result is also:

    $ ls ~/Dropbox/Work/Literature/k/ki/home/joost/Dropbox/

It does not occur when there is a switch preceding the file path:

    $ ls -l ~/dro

completes fine.


Joost Kremers


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

In GNU Emacs 24.3.1 (i686-pc-linux-gnu, GTK+ Version 3.4.2)
 of 2013-08-22 on chindi02, modified by Debian
Windowing system distributor `The X.Org Foundation', version 11.0.11103000
System Description:     elementary OS Luna

Configured using:
 `configure '--build' 'i686-linux-gnu' '--build' 'i686-linux-gnu'
 '--prefix=/usr' '--sharedstatedir=/var/lib' '--libexecdir=/usr/lib'
 '--localstatedir=/var/lib' '--infodir=/usr/share/info'
 '--mandir=/usr/share/man' '--with-pop=yes'
 '--with-crt-dir=/usr/lib/i386-linux-gnu' '--with-x=yes'
 '--with-x-toolkit=gtk3' '--with-toolkit-scroll-bars'
 'build_alias=i686-linux-gnu' 'CFLAGS=-g -O2 -fstack-protector
 --param=ssp-buffer-size=4 -Wformat -Wformat-security
 -Werror=format-security -Wall' 'LDFLAGS=-Wl,-Bsymbolic-functions
 -Wl,-z,relro' 'CPPFLAGS=-D_FORTIFY_SOURCE=2''

Important settings:
  value of $LANG: en_US.UTF-8
  locale-coding-system: utf-8-unix
  default enable-multibyte-characters: t

Major mode: EShell

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
  font-lock-mode: t
  blink-cursor-mode: t
  auto-composition-mode: t
  auto-encryption-mode: t
  auto-compression-mode: t
  line-number-mode: t
  transient-mark-mode: t

Recent input:
( s e t q SPC c m <backspace> <backspace> e s h e l 
l - c m p l - i g n o r e - c a s e SPC t ) M-x e s 
h e l l <return> c d SPC d r o <tab> <backspace> <backspace> 
<backspace> D r o <tab> W o r <tab> R e <tab> <return> 
c d SPC . . / R e a <tab> <return> c p SPC W i l <tab> 
<tab> SPC ~ / D r o <tab> <M-backspace> D r o <C-tab> 
C-x b <return> C-x C-e C-x b <return> <tab> <M-backspace> 
d r o <tab> <M-backspace> <M-backspace> <M-backspace> 
<M-backspace> <M-backspace> e x i t <return> M-x e 
s h e l l <return> c d SPC d r o <tab> r e a <tab> 
<backspace> <backspace> <backspace> w o r <tab> r e 
a <tab> <return> c p SPC w i l b <tab> ~ / r <backspace> 
d r o <tab> <M-backspace> <M-backspace> <M-backspace> 
<M-backspace> <M-backspace> <M-backspace> c d <return> 
c d SPC ~ / d r o <tab> w o <tab> M-x r e p o r <tab> 

Recent messages:
Loading em-hist...done
Loading em-ls...done
Loading em-prompt...done
Loading em-script...done
Loading em-term...done
Loading em-unix...done
No completions of dro
No completions of /home/joost/dro
No completions of Dropbox/rea

Load-path shadows:
None found.

(shadow sort gnus-util mail-extr emacsbug message format-spec rfc822 mml
mml-sec mm-decode mm-bodies mm-encode mail-parse rfc2231 mailabbrev
gmm-utils mailheader sendmail rfc2047 rfc2045 ietf-drums mm-util
mail-prsvr mail-utils pcmpl-unix em-unix pcomplete comint ansi-color
em-term term disp-table easymenu ehelp electric em-script em-prompt
em-ls em-hist em-pred em-glob em-dirs em-cmpl em-basic em-banner
em-alias ring esh-var esh-io esh-cmd esh-opt esh-ext esh-proc esh-arg
eldoc help-fns esh-groups eshell esh-module esh-mode esh-util time-date
tooltip ediff-hook vc-hooks lisp-float-type mwheel x-win x-dnd tool-bar
dnd fontset image regexp-opt fringe tabulated-list newcomment lisp-mode
register page menu-bar rfn-eshadow timer select scroll-bar 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
minibuffer loaddefs button faces cus-face macroexp files text-properties
overlay sha1 md5 base64 format env code-pages mule custom widget
hashtable-print-readable backquote make-network-process dbusbind
dynamic-setting system-font-setting font-render-setting move-toolbar gtk
x-toolkit x multi-tty emacs)

Joost Kremers
Life has its moments

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