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[debbugs-tracker] bug#22544: closed (25.0.90; Long history items cause s

From: GNU bug Tracking System
Subject: [debbugs-tracker] bug#22544: closed (25.0.90; Long history items cause surprising positioning of cursor in minibuffer)
Date: Wed, 10 Feb 2016 00:33:02 +0000

Your message dated Wed, 10 Feb 2016 02:32:28 +0200
with message-id <address@hidden>
and subject line Re: bug#22544: 25.0.90; Long history items cause surprising 
positioning of cursor in minibuffer
has caused the debbugs.gnu.org bug report #22544,
regarding 25.0.90; Long history items cause surprising positioning of cursor in 
to be marked as done.

(If you believe you have received this mail in error, please contact

22544: http://debbugs.gnu.org/cgi/bugreport.cgi?bug=22544
GNU Bug Tracking System
Contact address@hidden with problems
--- Begin Message --- Subject: 25.0.90; Long history items cause surprising positioning of cursor in minibuffer Date: Wed, 03 Feb 2016 18:32:58 +0200
emacs -Q

Paste the following into *scratch* and evaluate it with "C-x C-e"
after the closing parenthesis:

   (let ((default-file "~/rmail/FOO")
      (concat "Output message to mail file (default "
              (file-name-nondirectory default-file)
              "): ")
      (file-name-directory default-file)
      (abbreviate-file-name default-file)))

You should now see this in the minibuffer:

  Output message to mail file (default FOO): ~/rmail/!

where ! shows the cursor position.

Now press <UP> once.  The result is as expected:

  Output message to mail file (default FOO): ~/rmail/FOOBAR!

with the cursor at the end of the history item.  Press <UP> one more
time, which results in this:

  Output message to mail file (default FOO): 

Still as expected.  Press <UP> once more, resulting in:

  Output message to mail file (default FOO): 

This is somewhat unexpected, because the column of the cursor looks
random -- it is neither the same as in previous display, nor related
to anything else I can think of.

Now press <UP> one more time, and observe this result:

  Output message to mail file (default FOO): ~/shorte!r/file/name

This is even less expected -- why isn't the cursor at the end of the
file name, even though it is short enough to display entirely on a
single screen line?

If the longish history item is removed before evaluating the above,
then the behavior is as expected -- Emacs places the cursor at the end
of each history item.

Clearly, the bug is not a catastrophe, but it's quite annoying to see
the cursor jump to these unexpected positions.

The test case is synthesized, but it faithfully emulates what happens
to me every time I use 'o' in Rmail to file a message in my archives.
The archive folders are just mbox files, so the 'o' command in Rmail
uses file-name-history, where I have long file names as well as short

In GNU Emacs (i686-pc-mingw32)
 of 2016-01-31 built on HOME-C4E4A596F7
Windowing system distributor 'Microsoft Corp.', version 5.1.2600
Configured using:
 'configure --prefix=/d/usr --enable-checking=yes,glyphs
 --with-wide-int --with-modules 'CFLAGS=-Og -gdwarf-4 -g3''

Configured features:

Important settings:
  value of $LANG: ENU
  locale-coding-system: cp1255

Major mode: RMAIL

Minor modes in effect:
  shell-dirtrack-mode: t
  diff-auto-refine-mode: t
  desktop-save-mode: t
  save-place-mode: t
  show-paren-mode: t
  display-time-mode: t
  tooltip-mode: t
  global-eldoc-mode: t
  electric-indent-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
  temp-buffer-resize-mode: t
  buffer-read-only: t
  line-number-mode: t

Recent messages:
Showing message 2138...done
Showing message 2139...done
Added to d:/usr/eli/rmail/GIT.rmail
Showing message 2140...done
Showing message 2141...done
Showing message 2142...done
Showing message 2143...done
No following nondeleted message
command-execute: Command attempted to use minibuffer while in minibuffer
Mark set

Load-path shadows:
d:/usr/share/emacs/site-lisp/soap-inspect hides 
d:/usr/share/emacs/site-lisp/soap-client hides 

(shadow emacsbug ruby-mode smie shell character-fold misearch
multi-isearch rmailout url-util url-parse url-vars rfc2104
network-stream nsm starttls tls gnutls mail-extr smtpmail auth-source
eieio eieio-core cl-macs password-cache dabbrev mailalias sendmail
shr-color color shr dom subr-x browse-url cl-seq conf-mode arc-mode
archive-mode vc-bzr org-element org-rmail org-mhe org-irc org-info
org-gnus org-docview doc-view image-mode org-bibtex bibtex org-bbdb
org-w3m org advice org-macro org-footnote org-pcomplete pcomplete
org-list org-faces org-entities org-version ob-emacs-lisp ob ob-tangle
ob-ref ob-lob ob-table ob-exp org-src ob-keys ob-comint comint
ansi-color ring ob-core ob-eval org-compat org-macs org-loaddefs
find-func cal-menu calendar cal-loaddefs bat-mode make-mode parse-time
vc-cvs generic vc-svn texinfo jka-compr noutline outline bug-reference
flyspell add-log info vc vc-dispatcher vc-git diff-mode easy-mmode map
seq byte-opt gv bytecomp byte-compile cconv cl-extra qp rmailsum
rmailmm message dired-x dired format-spec rfc822 mml mml-sec epg
epg-config gnus-util mm-decode mm-bodies mm-encode mailabbrev
gmm-utils mailheader mail-parse rfc2231 rmail rfc2047 rfc2045
ietf-drums mm-util help-fns help-mode mail-prsvr mail-utils desktop
frameset server filecache mairix cus-edit cus-start cus-load wid-edit
saveplace midnight ispell generic-x cc-mode cc-fonts easymenu cc-guess
cc-menus cc-cmds cc-styles cc-align cc-engine cc-vars cc-defs
cl-loaddefs pcase cl-lib paren battery time time-date mule-util
tooltip eldoc electric uniquify ediff-hook vc-hooks lisp-float-type
mwheel dos-w32 ls-lisp disp-table w32-win w32-vars term/common-win
tool-bar dnd fontset image regexp-opt fringe tabulated-list newcomment
elisp-mode lisp-mode prog-mode register page menu-bar rfn-eshadow
timer select scroll-bar mouse jit-lock font-lock syntax facemenu
font-core frame cl-generic cham georgian utf-8-lang misc-lang
vietnamese tibetan thai tai-viet lao korean japanese eucjp-ms cp51932
hebrew greek romanian slovak czech european ethiopic indian cyrillic
chinese charscript case-table epa-hook jka-cmpr-hook help simple
abbrev minibuffer cl-preloaded nadvice loaddefs button faces cus-face
macroexp files text-properties overlay sha1 md5 base64 format env
code-pages mule custom widget hashtable-print-readable backquote
w32notify w32 multi-tty make-network-process emacs)

Memory information:
((conses 16 1683542 243444)
 (symbols 56 41206 0)
 (miscs 48 3561 4743)
 (strings 16 113909 44473)
 (string-bytes 1 3147922)
 (vectors 16 41851)
 (vector-slots 8 1701426 256664)
 (floats 8 497 588)
 (intervals 40 326308 7211)
 (buffers 856 218))

--- End Message ---
--- Begin Message --- Subject: Re: bug#22544: 25.0.90; Long history items cause surprising positioning of cursor in minibuffer Date: Wed, 10 Feb 2016 02:32:28 +0200 User-agent: Gnus/5.13 (Gnus v5.13) Emacs/25.0.90 (x86_64-pc-linux-gnu)
> LGTM, I'm fine with having these patches as the solution to the
> issue.  Please go ahead and commit.


--- End Message ---

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