bug#12906: 24.2.50; Parts of the screen are completely white

bug#12906: 24.2.50; Parts of the screen are completely white

[Fabrice Niessen]

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':


I sometimes have parts of the screen "undisplayed" such in the
example at http://screencast.com/t/qLMxmSLxYvJ8.

In the beginning, all the line was white (even the fringe!).

While moving the cursor around, some characters are redisplayed correctly.

Paging up and down makes the display correct again.

However, this is not occurring often, and not reproducible per se -- unluckily.


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
c:/Program Files/Emacs-24.2/etc/DEBUG.


In GNU Emacs 24.2.50.1 (i386-mingw-nt5.1.2600)
 of 2012-10-22 on DANI-PC
Bzr revision: 110618 monnier-CRDzTM1onBSWkKpYnGOUKhc95p6a78TbeXGMcDWol4xM7RDeeHvltMWNcNhuwuIV@public.gmane.org
Windowing system distributor `Microsoft Corp.', version 5.1.2600
Configured using:
 `configure --with-gcc (4.7) --no-opt --enable-checking --cflags
 -I../../libs/libxpm-3.5.8/include -I../../libs/libxpm-3.5.8/src
 -I../../libs/libpng-1.4.10 -I../../libs/zlib-1.2.6
 -I../../libs/giflib-4.1.4-1/include -I../../libs/jpeg-6b-4/include
 -I../../libs/tiff-3.8.2-1/include
 -I../../libs/libxml2-2.7.8-w32-bin/include/libxml2
 -I../../libs/gnutls-3.0.16/include
 -I../../libs/libiconv-1.14-2-mingw32-dev/include'

Important settings:
  value of $LANG: en_US.utf8
  locale-coding-system: cp1252
  default enable-multibyte-characters: t

Major mode: Group

Minor modes in effect:
  gnus-topic-mode: t
  diff-auto-refine-mode: t
  recentf-mode: t
  auto-image-file-mode: t
  gnus-undo-mode: t
  global-auto-complete-mode: t
  shell-dirtrack-mode: t
  helm-match-plugin-mode: t
  pretty-control-l-mode: t
  yas-global-mode: t
  yas-minor-mode: t
  show-paren-mode: t
  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-composition-mode: t
  auto-encryption-mode: t
  auto-compression-mode: t
  buffer-read-only: t
  line-number-mode: t
  transient-mark-mode: t

Recent messages:
(info) +-> Requiring `nnmail'... already loaded
No more newsgroups
(info) +-> Requiring `cl'... already loaded
(info) +-> Requiring `helm'... already loaded
(info) +-> Requiring `helm-mode'... already loaded

(info) +-> Requiring `helm-misc'... already loaded
(info) +-> Requiring `sendmail'... already loaded
(info) +-> Requiring `message'... already loaded
(info) +-> Requiring `helm-misc'... already loaded

Load-path shadows:
d:/home/sva/emacs/site-lisp/yasnippet/.yas-snippets-snippets hides d:/home/sva/Downloads/emacs/site-lisp/yasnippet/.yas-snippets-snippets
d:/home/sva/Downloads/emacs/site-lisp/gnus/lisp/.dir-locals hides d:/home/sva/Downloads/emacs/site-lisp/gnus/.dir-locals
d:/home/sva/Downloads/emacs/site-lisp/gnus/lisp/lpath hides d:/home/sva/Downloads/emacs/site-lisp/dictionary-1.8.7/lpath
d:/home/sva/Downloads/emacs/site-lisp/fuzzy-el/fuzzy hides d:/home/sva/Downloads/emacs/site-lisp/auto-complete-1.3.1/fuzzy
d:/home/sva/Downloads/emacs/site-lisp/auctex-11.86/lisp/tex-site hides d:/home/sva/Downloads/emacs/site-lisp/tex-site
d:/home/sva/Downloads/emacs/site-lisp/gnus/lisp/password-cache hides c:/Program Files/Emacs-24.2/lisp/password-cache
d:/home/sva/Downloads/emacs/site-lisp/gnus/lisp/md4 hides c:/Program Files/Emacs-24.2/lisp/md4
d:/home/sva/Downloads/emacs/site-lisp/gnus/lisp/hex-util hides c:/Program Files/Emacs-24.2/lisp/hex-util
d:/home/sva/Downloads/emacs/site-lisp/gnus/lisp/format-spec hides c:/Program Files/Emacs-24.2/lisp/format-spec
d:/home/sva/Downloads/emacs/site-lisp/ehelp hides c:/Program Files/Emacs-24.2/lisp/ehelp
d:/home/sva/Downloads/emacs/site-lisp/gnus/lisp/color hides c:/Program Files/Emacs-24.2/lisp/color
d:/home/sva/Downloads/emacs/site-lisp/gnus/lisp/dns-mode hides c:/Program Files/Emacs-24.2/lisp/textmodes/dns-mode
d:/home/sva/src/org-mode/lisp/org hides c:/Program Files/Emacs-24.2/lisp/org/org
d:/home/sva/src/org-mode/lisp/org-xoxo hides c:/Program Files/Emacs-24.2/lisp/org/org-xoxo
d:/home/sva/src/org-mode/lisp/org-wl hides c:/Program Files/Emacs-24.2/lisp/org/org-wl
d:/home/sva/src/org-mode/lisp/org-w3m hides c:/Program Files/Emacs-24.2/lisp/org/org-w3m
d:/home/sva/src/org-mode/lisp/org-vm hides c:/Program Files/Emacs-24.2/lisp/org/org-vm
d:/home/sva/src/org-mode/lisp/org-version hides c:/Program Files/Emacs-24.2/lisp/org/org-version
d:/home/sva/src/org-mode/lisp/org-timer hides c:/Program Files/Emacs-24.2/lisp/org/org-timer
d:/home/sva/src/org-mode/lisp/org-taskjuggler hides c:/Program Files/Emacs-24.2/lisp/org/org-taskjuggler
d:/home/sva/src/org-mode/lisp/org-table hides c:/Program Files/Emacs-24.2/lisp/org/org-table
d:/home/sva/src/org-mode/lisp/org-src hides c:/Program Files/Emacs-24.2/lisp/org/org-src
d:/home/sva/src/org-mode/lisp/org-special-blocks hides c:/Program Files/Emacs-24.2/lisp/org/org-special-blocks
d:/home/sva/src/org-mode/lisp/org-rmail hides c:/Program Files/Emacs-24.2/lisp/org/org-rmail
d:/home/sva/src/org-mode/lisp/org-remember hides c:/Program Files/Emacs-24.2/lisp/org/org-remember
d:/home/sva/src/org-mode/lisp/org-publish hides c:/Program Files/Emacs-24.2/lisp/org/org-publish
d:/home/sva/src/org-mode/lisp/org-protocol hides c:/Program Files/Emacs-24.2/lisp/org/org-protocol
d:/home/sva/src/org-mode/lisp/org-plot hides c:/Program Files/Emacs-24.2/lisp/org/org-plot
d:/home/sva/src/org-mode/lisp/org-pcomplete hides c:/Program Files/Emacs-24.2/lisp/org/org-pcomplete
d:/home/sva/src/org-mode/lisp/org-odt hides c:/Program Files/Emacs-24.2/lisp/org/org-odt
d:/home/sva/src/org-mode/lisp/org-mouse hides c:/Program Files/Emacs-24.2/lisp/org/org-mouse
d:/home/sva/src/org-mode/lisp/org-mobile hides c:/Program Files/Emacs-24.2/lisp/org/org-mobile
d:/home/sva/src/org-mode/lisp/org-mks hides c:/Program Files/Emacs-24.2/lisp/org/org-mks
d:/home/sva/src/org-mode/lisp/org-mhe hides c:/Program Files/Emacs-24.2/lisp/org/org-mhe
d:/home/sva/src/org-mode/lisp/org-mew hides c:/Program Files/Emacs-24.2/lisp/org/org-mew
d:/home/sva/src/org-mode/lisp/org-macs hides c:/Program Files/Emacs-24.2/lisp/org/org-macs
d:/home/sva/src/org-mode/lisp/org-mac-message hides c:/Program Files/Emacs-24.2/lisp/org/org-mac-message
d:/home/sva/src/org-mode/lisp/org-lparse hides c:/Program Files/Emacs-24.2/lisp/org/org-lparse
d:/home/sva/src/org-mode/lisp/org-list hides c:/Program Files/Emacs-24.2/lisp/org/org-list
d:/home/sva/src/org-mode/lisp/org-latex hides c:/Program Files/Emacs-24.2/lisp/org/org-latex
d:/home/sva/src/org-mode/lisp/org-jsinfo hides c:/Program Files/Emacs-24.2/lisp/org/org-jsinfo
d:/home/sva/src/org-mode/lisp/org-irc hides c:/Program Files/Emacs-24.2/lisp/org/org-irc
d:/home/sva/src/org-mode/lisp/org-install hides c:/Program Files/Emacs-24.2/lisp/org/org-install
d:/home/sva/src/org-mode/lisp/org-inlinetask hides c:/Program Files/Emacs-24.2/lisp/org/org-inlinetask
d:/home/sva/src/org-mode/lisp/org-info hides c:/Program Files/Emacs-24.2/lisp/org/org-info
d:/home/sva/src/org-mode/lisp/org-indent hides c:/Program Files/Emacs-24.2/lisp/org/org-indent
d:/home/sva/src/org-mode/lisp/org-id hides c:/Program Files/Emacs-24.2/lisp/org/org-id
d:/home/sva/src/org-mode/lisp/org-icalendar hides c:/Program Files/Emacs-24.2/lisp/org/org-icalendar
d:/home/sva/src/org-mode/lisp/org-html hides c:/Program Files/Emacs-24.2/lisp/org/org-html
d:/home/sva/src/org-mode/lisp/org-habit hides c:/Program Files/Emacs-24.2/lisp/org/org-habit
d:/home/sva/src/org-mode/lisp/org-gnus hides c:/Program Files/Emacs-24.2/lisp/org/org-gnus
d:/home/sva/src/org-mode/lisp/org-freemind hides c:/Program Files/Emacs-24.2/lisp/org/org-freemind
d:/home/sva/src/org-mode/lisp/org-footnote hides c:/Program Files/Emacs-24.2/lisp/org/org-footnote
d:/home/sva/src/org-mode/lisp/org-feed hides c:/Program Files/Emacs-24.2/lisp/org/org-feed
d:/home/sva/src/org-mode/lisp/org-faces hides c:/Program Files/Emacs-24.2/lisp/org/org-faces
d:/home/sva/src/org-mode/lisp/org-exp hides c:/Program Files/Emacs-24.2/lisp/org/org-exp
d:/home/sva/src/org-mode/lisp/org-eshell hides c:/Program Files/Emacs-24.2/lisp/org/org-eshell
d:/home/sva/src/org-mode/lisp/org-entities hides c:/Program Files/Emacs-24.2/lisp/org/org-entities
d:/home/sva/src/org-mode/lisp/org-element hides c:/Program Files/Emacs-24.2/lisp/org/org-element
d:/home/sva/src/org-mode/lisp/org-docview hides c:/Program Files/Emacs-24.2/lisp/org/org-docview
d:/home/sva/src/org-mode/lisp/org-docbook hides c:/Program Files/Emacs-24.2/lisp/org/org-docbook
d:/home/sva/src/org-mode/lisp/org-datetree hides c:/Program Files/Emacs-24.2/lisp/org/org-datetree
d:/home/sva/src/org-mode/lisp/org-ctags hides c:/Program Files/Emacs-24.2/lisp/org/org-ctags
d:/home/sva/src/org-mode/lisp/org-crypt hides c:/Program Files/Emacs-24.2/lisp/org/org-crypt
d:/home/sva/src/org-mode/lisp/org-compat hides c:/Program Files/Emacs-24.2/lisp/org/org-compat
d:/home/sva/src/org-mode/lisp/org-colview hides c:/Program Files/Emacs-24.2/lisp/org/org-colview
d:/home/sva/src/org-mode/lisp/org-clock hides c:/Program Files/Emacs-24.2/lisp/org/org-clock
d:/home/sva/src/org-mode/lisp/org-capture hides c:/Program Files/Emacs-24.2/lisp/org/org-capture
d:/home/sva/src/org-mode/lisp/org-bibtex hides c:/Program Files/Emacs-24.2/lisp/org/org-bibtex
d:/home/sva/src/org-mode/lisp/org-beamer hides c:/Program Files/Emacs-24.2/lisp/org/org-beamer
d:/home/sva/src/org-mode/lisp/org-bbdb hides c:/Program Files/Emacs-24.2/lisp/org/org-bbdb
d:/home/sva/src/org-mode/lisp/org-attach hides c:/Program Files/Emacs-24.2/lisp/org/org-attach
d:/home/sva/src/org-mode/lisp/org-ascii hides c:/Program Files/Emacs-24.2/lisp/org/org-ascii
d:/home/sva/src/org-mode/lisp/org-archive hides c:/Program Files/Emacs-24.2/lisp/org/org-archive
d:/home/sva/src/org-mode/lisp/org-agenda hides c:/Program Files/Emacs-24.2/lisp/org/org-agenda
d:/home/sva/src/org-mode/lisp/ob hides c:/Program Files/Emacs-24.2/lisp/org/ob
d:/home/sva/src/org-mode/lisp/ob-tangle hides c:/Program Files/Emacs-24.2/lisp/org/ob-tangle
d:/home/sva/src/org-mode/lisp/ob-table hides c:/Program Files/Emacs-24.2/lisp/org/ob-table
d:/home/sva/src/org-mode/lisp/ob-sqlite hides c:/Program Files/Emacs-24.2/lisp/org/ob-sqlite
d:/home/sva/src/org-mode/lisp/ob-sql hides c:/Program Files/Emacs-24.2/lisp/org/ob-sql
d:/home/sva/src/org-mode/lisp/ob-shen hides c:/Program Files/Emacs-24.2/lisp/org/ob-shen
d:/home/sva/src/org-mode/lisp/ob-sh hides c:/Program Files/Emacs-24.2/lisp/org/ob-sh
d:/home/sva/src/org-mode/lisp/ob-screen hides c:/Program Files/Emacs-24.2/lisp/org/ob-screen
d:/home/sva/src/org-mode/lisp/ob-scheme hides c:/Program Files/Emacs-24.2/lisp/org/ob-scheme
d:/home/sva/src/org-mode/lisp/ob-scala hides c:/Program Files/Emacs-24.2/lisp/org/ob-scala
d:/home/sva/src/org-mode/lisp/ob-sass hides c:/Program Files/Emacs-24.2/lisp/org/ob-sass
d:/home/sva/src/org-mode/lisp/ob-ruby hides c:/Program Files/Emacs-24.2/lisp/org/ob-ruby
d:/home/sva/src/org-mode/lisp/ob-ref hides c:/Program Files/Emacs-24.2/lisp/org/ob-ref
d:/home/sva/src/org-mode/lisp/ob-R hides c:/Program Files/Emacs-24.2/lisp/org/ob-R
d:/home/sva/src/org-mode/lisp/ob-python hides c:/Program Files/Emacs-24.2/lisp/org/ob-python
d:/home/sva/src/org-mode/lisp/ob-plantuml hides c:/Program Files/Emacs-24.2/lisp/org/ob-plantuml
d:/home/sva/src/org-mode/lisp/ob-picolisp hides c:/Program Files/Emacs-24.2/lisp/org/ob-picolisp
d:/home/sva/src/org-mode/lisp/ob-perl hides c:/Program Files/Emacs-24.2/lisp/org/ob-perl
d:/home/sva/src/org-mode/lisp/ob-org hides c:/Program Files/Emacs-24.2/lisp/org/ob-org
d:/home/sva/src/org-mode/lisp/ob-octave hides c:/Program Files/Emacs-24.2/lisp/org/ob-octave
d:/home/sva/src/org-mode/lisp/ob-ocaml hides c:/Program Files/Emacs-24.2/lisp/org/ob-ocaml
d:/home/sva/src/org-mode/lisp/ob-mscgen hides c:/Program Files/Emacs-24.2/lisp/org/ob-mscgen
d:/home/sva/src/org-mode/lisp/ob-maxima hides c:/Program Files/Emacs-24.2/lisp/org/ob-maxima
d:/home/sva/src/org-mode/lisp/ob-matlab hides c:/Program Files/Emacs-24.2/lisp/org/ob-matlab
d:/home/sva/src/org-mode/lisp/ob-lob hides c:/Program Files/Emacs-24.2/lisp/org/ob-lob
d:/home/sva/src/org-mode/lisp/ob-lisp hides c:/Program Files/Emacs-24.2/lisp/org/ob-lisp
d:/home/sva/src/org-mode/lisp/ob-lilypond hides c:/Program Files/Emacs-24.2/lisp/org/ob-lilypond
d:/home/sva/src/org-mode/lisp/ob-ledger hides c:/Program Files/Emacs-24.2/lisp/org/ob-ledger
d:/home/sva/src/org-mode/lisp/ob-latex hides c:/Program Files/Emacs-24.2/lisp/org/ob-latex
d:/home/sva/src/org-mode/lisp/ob-keys hides c:/Program Files/Emacs-24.2/lisp/org/ob-keys
d:/home/sva/src/org-mode/lisp/ob-js hides c:/Program Files/Emacs-24.2/lisp/org/ob-js
d:/home/sva/src/org-mode/lisp/ob-java hides c:/Program Files/Emacs-24.2/lisp/org/ob-java
d:/home/sva/src/org-mode/lisp/ob-io hides c:/Program Files/Emacs-24.2/lisp/org/ob-io
d:/home/sva/src/org-mode/lisp/ob-haskell hides c:/Program Files/Emacs-24.2/lisp/org/ob-haskell
d:/home/sva/src/org-mode/lisp/ob-gnuplot hides c:/Program Files/Emacs-24.2/lisp/org/ob-gnuplot
d:/home/sva/src/org-mode/lisp/ob-fortran hides c:/Program Files/Emacs-24.2/lisp/org/ob-fortran
d:/home/sva/src/org-mode/lisp/ob-exp hides c:/Program Files/Emacs-24.2/lisp/org/ob-exp
d:/home/sva/src/org-mode/lisp/ob-eval hides c:/Program Files/Emacs-24.2/lisp/org/ob-eval
d:/home/sva/src/org-mode/lisp/ob-emacs-lisp hides c:/Program Files/Emacs-24.2/lisp/org/ob-emacs-lisp
d:/home/sva/src/org-mode/lisp/ob-dot hides c:/Program Files/Emacs-24.2/lisp/org/ob-dot
d:/home/sva/src/org-mode/lisp/ob-ditaa hides c:/Program Files/Emacs-24.2/lisp/org/ob-ditaa
d:/home/sva/src/org-mode/lisp/ob-css hides c:/Program Files/Emacs-24.2/lisp/org/ob-css
d:/home/sva/src/org-mode/lisp/ob-comint hides c:/Program Files/Emacs-24.2/lisp/org/ob-comint
d:/home/sva/src/org-mode/lisp/ob-clojure hides c:/Program Files/Emacs-24.2/lisp/org/ob-clojure
d:/home/sva/src/org-mode/lisp/ob-calc hides c:/Program Files/Emacs-24.2/lisp/org/ob-calc
d:/home/sva/src/org-mode/lisp/ob-C hides c:/Program Files/Emacs-24.2/lisp/org/ob-C
d:/home/sva/src/org-mode/lisp/ob-awk hides c:/Program Files/Emacs-24.2/lisp/org/ob-awk
d:/home/sva/src/org-mode/lisp/ob-asymptote hides c:/Program Files/Emacs-24.2/lisp/org/ob-asymptote
d:/home/sva/Downloads/emacs/site-lisp/gnus/lisp/tls hides c:/Program Files/Emacs-24.2/lisp/net/tls
d:/home/sva/Downloads/emacs/site-lisp/gnus/lisp/sasl hides c:/Program Files/Emacs-24.2/lisp/net/sasl
d:/home/sva/Downloads/emacs/site-lisp/gnus/lisp/sasl-ntlm hides c:/Program Files/Emacs-24.2/lisp/net/sasl-ntlm
d:/home/sva/Downloads/emacs/site-lisp/gnus/lisp/sasl-digest hides c:/Program Files/Emacs-24.2/lisp/net/sasl-digest
d:/home/sva/Downloads/emacs/site-lisp/gnus/lisp/sasl-cram hides c:/Program Files/Emacs-24.2/lisp/net/sasl-cram
d:/home/sva/Downloads/emacs/site-lisp/gnus/lisp/ntlm hides c:/Program Files/Emacs-24.2/lisp/net/ntlm
d:/home/sva/Downloads/emacs/site-lisp/gnus/lisp/netrc hides c:/Program Files/Emacs-24.2/lisp/net/netrc
d:/home/sva/Downloads/emacs/site-lisp/gnus/lisp/hmac-md5 hides c:/Program Files/Emacs-24.2/lisp/net/hmac-md5
d:/home/sva/Downloads/emacs/site-lisp/gnus/lisp/hmac-def hides c:/Program Files/Emacs-24.2/lisp/net/hmac-def
d:/home/sva/Downloads/emacs/site-lisp/gnus/lisp/dns hides c:/Program Files/Emacs-24.2/lisp/net/dns
d:/home/sva/Downloads/emacs/site-lisp/gnus/lisp/dig hides c:/Program Files/Emacs-24.2/lisp/net/dig
d:/home/sva/Downloads/emacs/site-lisp/gnus/lisp/uudecode hides c:/Program Files/Emacs-24.2/lisp/mail/uudecode
d:/home/sva/Downloads/emacs/site-lisp/gnus/lisp/hashcash hides c:/Program Files/Emacs-24.2/lisp/mail/hashcash
d:/home/sva/Downloads/emacs/site-lisp/gnus/lisp/binhex hides c:/Program Files/Emacs-24.2/lisp/mail/binhex
d:/home/sva/Downloads/emacs/site-lisp/gnus/lisp/yenc hides c:/Program Files/Emacs-24.2/lisp/gnus/yenc
d:/home/sva/Downloads/emacs/site-lisp/gnus/lisp/utf7 hides c:/Program Files/Emacs-24.2/lisp/gnus/utf7
d:/home/sva/Downloads/emacs/site-lisp/gnus/lisp/starttls hides c:/Program Files/Emacs-24.2/lisp/gnus/starttls
d:/home/sva/Downloads/emacs/site-lisp/gnus/lisp/spam hides c:/Program Files/Emacs-24.2/lisp/gnus/spam
d:/home/sva/Downloads/emacs/site-lisp/gnus/lisp/spam-wash hides c:/Program Files/Emacs-24.2/lisp/gnus/spam-wash
d:/home/sva/Downloads/emacs/site-lisp/gnus/lisp/spam-stat hides c:/Program Files/Emacs-24.2/lisp/gnus/spam-stat
d:/home/sva/Downloads/emacs/site-lisp/gnus/lisp/spam-report hides c:/Program Files/Emacs-24.2/lisp/gnus/spam-report
d:/home/sva/Downloads/emacs/site-lisp/gnus/lisp/smime hides c:/Program Files/Emacs-24.2/lisp/gnus/smime
d:/home/sva/Downloads/emacs/site-lisp/gnus/lisp/smiley hides c:/Program Files/Emacs-24.2/lisp/gnus/smiley
d:/home/sva/Downloads/emacs/site-lisp/gnus/lisp/sieve hides c:/Program Files/Emacs-24.2/lisp/gnus/sieve
d:/home/sva/Downloads/emacs/site-lisp/gnus/lisp/sieve-mode hides c:/Program Files/Emacs-24.2/lisp/gnus/sieve-mode
d:/home/sva/Downloads/emacs/site-lisp/gnus/lisp/sieve-manage hides c:/Program Files/Emacs-24.2/lisp/gnus/sieve-manage
d:/home/sva/Downloads/emacs/site-lisp/gnus/lisp/shr hides c:/Program Files/Emacs-24.2/lisp/gnus/shr
d:/home/sva/Downloads/emacs/site-lisp/gnus/lisp/shr-color hides c:/Program Files/Emacs-24.2/lisp/gnus/shr-color
d:/home/sva/Downloads/emacs/site-lisp/gnus/lisp/score-mode hides c:/Program Files/Emacs-24.2/lisp/gnus/score-mode
d:/home/sva/Downloads/emacs/site-lisp/gnus/lisp/rtree hides c:/Program Files/Emacs-24.2/lisp/gnus/rtree
d:/home/sva/Downloads/emacs/site-lisp/gnus/lisp/rfc2231 hides c:/Program Files/Emacs-24.2/lisp/gnus/rfc2231
d:/home/sva/Downloads/emacs/site-lisp/gnus/lisp/rfc2104 hides c:/Program Files/Emacs-24.2/lisp/gnus/rfc2104
d:/home/sva/Downloads/emacs/site-lisp/gnus/lisp/rfc2047 hides c:/Program Files/Emacs-24.2/lisp/gnus/rfc2047
d:/home/sva/Downloads/emacs/site-lisp/gnus/lisp/rfc2045 hides c:/Program Files/Emacs-24.2/lisp/gnus/rfc2045
d:/home/sva/Downloads/emacs/site-lisp/gnus/lisp/rfc1843 hides c:/Program Files/Emacs-24.2/lisp/gnus/rfc1843
d:/home/sva/Downloads/emacs/site-lisp/gnus/lisp/registry hides c:/Program Files/Emacs-24.2/lisp/gnus/registry
d:/home/sva/Downloads/emacs/site-lisp/gnus/lisp/qp hides c:/Program Files/Emacs-24.2/lisp/gnus/qp
d:/home/sva/Downloads/emacs/site-lisp/gnus/lisp/pop3 hides c:/Program Files/Emacs-24.2/lisp/gnus/pop3
d:/home/sva/Downloads/emacs/site-lisp/gnus/lisp/plstore hides c:/Program Files/Emacs-24.2/lisp/gnus/plstore
d:/home/sva/Downloads/emacs/site-lisp/gnus/lisp/nnweb hides c:/Program Files/Emacs-24.2/lisp/gnus/nnweb
d:/home/sva/Downloads/emacs/site-lisp/gnus/lisp/nnvirtual hides c:/Program Files/Emacs-24.2/lisp/gnus/nnvirtual
d:/home/sva/Downloads/emacs/site-lisp/gnus/lisp/nntp hides c:/Program Files/Emacs-24.2/lisp/gnus/nntp
d:/home/sva/Downloads/emacs/site-lisp/gnus/lisp/nnspool hides c:/Program Files/Emacs-24.2/lisp/gnus/nnspool
d:/home/sva/Downloads/emacs/site-lisp/gnus/lisp/nnrss hides c:/Program Files/Emacs-24.2/lisp/gnus/nnrss
d:/home/sva/Downloads/emacs/site-lisp/gnus/lisp/nnregistry hides c:/Program Files/Emacs-24.2/lisp/gnus/nnregistry
d:/home/sva/Downloads/emacs/site-lisp/gnus/lisp/nnoo hides c:/Program Files/Emacs-24.2/lisp/gnus/nnoo
d:/home/sva/Downloads/emacs/site-lisp/gnus/lisp/nnnil hides c:/Program Files/Emacs-24.2/lisp/gnus/nnnil
d:/home/sva/Downloads/emacs/site-lisp/gnus/lisp/nnml hides c:/Program Files/Emacs-24.2/lisp/gnus/nnml
d:/home/sva/Downloads/emacs/site-lisp/gnus/lisp/nnmh hides c:/Program Files/Emacs-24.2/lisp/gnus/nnmh
d:/home/sva/Downloads/emacs/site-lisp/gnus/lisp/nnmbox hides c:/Program Files/Emacs-24.2/lisp/gnus/nnmbox
d:/home/sva/Downloads/emacs/site-lisp/gnus/lisp/nnmairix hides c:/Program Files/Emacs-24.2/lisp/gnus/nnmairix
d:/home/sva/Downloads/emacs/site-lisp/gnus/lisp/nnmaildir hides c:/Program Files/Emacs-24.2/lisp/gnus/nnmaildir
d:/home/sva/Downloads/emacs/site-lisp/gnus/lisp/nnmail hides c:/Program Files/Emacs-24.2/lisp/gnus/nnmail
d:/home/sva/Downloads/emacs/site-lisp/gnus/lisp/nnir hides c:/Program Files/Emacs-24.2/lisp/gnus/nnir
d:/home/sva/Downloads/emacs/site-lisp/gnus/lisp/nnimap hides c:/Program Files/Emacs-24.2/lisp/gnus/nnimap
d:/home/sva/Downloads/emacs/site-lisp/gnus/lisp/nnheader hides c:/Program Files/Emacs-24.2/lisp/gnus/nnheader
d:/home/sva/Downloads/emacs/site-lisp/gnus/lisp/nngateway hides c:/Program Files/Emacs-24.2/lisp/gnus/nngateway
d:/home/sva/Downloads/emacs/site-lisp/gnus/lisp/nnfolder hides c:/Program Files/Emacs-24.2/lisp/gnus/nnfolder
d:/home/sva/Downloads/emacs/site-lisp/gnus/lisp/nneething hides c:/Program Files/Emacs-24.2/lisp/gnus/nneething
d:/home/sva/Downloads/emacs/site-lisp/gnus/lisp/nndraft hides c:/Program Files/Emacs-24.2/lisp/gnus/nndraft
d:/home/sva/Downloads/emacs/site-lisp/gnus/lisp/nndoc hides c:/Program Files/Emacs-24.2/lisp/gnus/nndoc
d:/home/sva/Downloads/emacs/site-lisp/gnus/lisp/nndir hides c:/Program Files/Emacs-24.2/lisp/gnus/nndir
d:/home/sva/Downloads/emacs/site-lisp/gnus/lisp/nndiary hides c:/Program Files/Emacs-24.2/lisp/gnus/nndiary
d:/home/sva/Downloads/emacs/site-lisp/gnus/lisp/nnbabyl hides c:/Program Files/Emacs-24.2/lisp/gnus/nnbabyl
d:/home/sva/Downloads/emacs/site-lisp/gnus/lisp/nnagent hides c:/Program Files/Emacs-24.2/lisp/gnus/nnagent
d:/home/sva/Downloads/emacs/site-lisp/gnus/lisp/mml2015 hides c:/Program Files/Emacs-24.2/lisp/gnus/mml2015
d:/home/sva/Downloads/emacs/site-lisp/gnus/lisp/mml1991 hides c:/Program Files/Emacs-24.2/lisp/gnus/mml1991
d:/home/sva/Downloads/emacs/site-lisp/gnus/lisp/mml hides c:/Program Files/Emacs-24.2/lisp/gnus/mml
d:/home/sva/Downloads/emacs/site-lisp/gnus/lisp/mml-smime hides c:/Program Files/Emacs-24.2/lisp/gnus/mml-smime
d:/home/sva/Downloads/emacs/site-lisp/gnus/lisp/mml-sec hides c:/Program Files/Emacs-24.2/lisp/gnus/mml-sec
d:/home/sva/Downloads/emacs/site-lisp/gnus/lisp/mm-view hides c:/Program Files/Emacs-24.2/lisp/gnus/mm-view
d:/home/sva/Downloads/emacs/site-lisp/gnus/lisp/mm-uu hides c:/Program Files/Emacs-24.2/lisp/gnus/mm-uu
d:/home/sva/Downloads/emacs/site-lisp/gnus/lisp/mm-util hides c:/Program Files/Emacs-24.2/lisp/gnus/mm-util
d:/home/sva/Downloads/emacs/site-lisp/gnus/lisp/mm-url hides c:/Program Files/Emacs-24.2/lisp/gnus/mm-url
d:/home/sva/Downloads/emacs/site-lisp/gnus/lisp/mm-partial hides c:/Program Files/Emacs-24.2/lisp/gnus/mm-partial
d:/home/sva/Downloads/emacs/site-lisp/gnus/lisp/mm-extern hides c:/Program Files/Emacs-24.2/lisp/gnus/mm-extern
d:/home/sva/Downloads/emacs/site-lisp/gnus/lisp/mm-encode hides c:/Program Files/Emacs-24.2/lisp/gnus/mm-encode
d:/home/sva/Downloads/emacs/site-lisp/gnus/lisp/mm-decode hides c:/Program Files/Emacs-24.2/lisp/gnus/mm-decode
d:/home/sva/Downloads/emacs/site-lisp/gnus/lisp/mm-bodies hides c:/Program Files/Emacs-24.2/lisp/gnus/mm-bodies
d:/home/sva/Downloads/emacs/site-lisp/gnus/lisp/mm-archive hides c:/Program Files/Emacs-24.2/lisp/gnus/mm-archive
d:/home/sva/Downloads/emacs/site-lisp/gnus/lisp/messcompat hides c:/Program Files/Emacs-24.2/lisp/gnus/messcompat
d:/home/sva/Downloads/emacs/site-lisp/gnus/lisp/message hides c:/Program Files/Emacs-24.2/lisp/gnus/message
d:/home/sva/Downloads/emacs/site-lisp/gnus/lisp/mailcap hides c:/Program Files/Emacs-24.2/lisp/gnus/mailcap
d:/home/sva/Downloads/emacs/site-lisp/gnus/lisp/mail-source hides c:/Program Files/Emacs-24.2/lisp/gnus/mail-source
d:/home/sva/Downloads/emacs/site-lisp/gnus/lisp/mail-prsvr hides c:/Program Files/Emacs-24.2/lisp/gnus/mail-prsvr
d:/home/sva/Downloads/emacs/site-lisp/gnus/lisp/mail-parse hides c:/Program Files/Emacs-24.2/lisp/gnus/mail-parse
d:/home/sva/Downloads/emacs/site-lisp/gnus/lisp/legacy-gnus-agent hides c:/Program Files/Emacs-24.2/lisp/gnus/legacy-gnus-agent
d:/home/sva/Downloads/emacs/site-lisp/gnus/lisp/ietf-drums hides c:/Program Files/Emacs-24.2/lisp/gnus/ietf-drums
d:/home/sva/Downloads/emacs/site-lisp/gnus/lisp/html2text hides c:/Program Files/Emacs-24.2/lisp/gnus/html2text
d:/home/sva/Downloads/emacs/site-lisp/gnus/lisp/gssapi hides c:/Program Files/Emacs-24.2/lisp/gnus/gssapi
d:/home/sva/Downloads/emacs/site-lisp/gnus/lisp/gravatar hides c:/Program Files/Emacs-24.2/lisp/gnus/gravatar
d:/home/sva/Downloads/emacs/site-lisp/gnus/lisp/gnus hides c:/Program Files/Emacs-24.2/lisp/gnus/gnus
d:/home/sva/Downloads/emacs/site-lisp/gnus/lisp/gnus-win hides c:/Program Files/Emacs-24.2/lisp/gnus/gnus-win
d:/home/sva/Downloads/emacs/site-lisp/gnus/lisp/gnus-vm hides c:/Program Files/Emacs-24.2/lisp/gnus/gnus-vm
d:/home/sva/Downloads/emacs/site-lisp/gnus/lisp/gnus-uu hides c:/Program Files/Emacs-24.2/lisp/gnus/gnus-uu
d:/home/sva/Downloads/emacs/site-lisp/gnus/lisp/gnus-util hides c:/Program Files/Emacs-24.2/lisp/gnus/gnus-util
d:/home/sva/Downloads/emacs/site-lisp/gnus/lisp/gnus-undo hides c:/Program Files/Emacs-24.2/lisp/gnus/gnus-undo
d:/home/sva/Downloads/emacs/site-lisp/gnus/lisp/gnus-topic hides c:/Program Files/Emacs-24.2/lisp/gnus/gnus-topic
d:/home/sva/Downloads/emacs/site-lisp/gnus/lisp/gnus-sync hides c:/Program Files/Emacs-24.2/lisp/gnus/gnus-sync
d:/home/sva/Downloads/emacs/site-lisp/gnus/lisp/gnus-sum hides c:/Program Files/Emacs-24.2/lisp/gnus/gnus-sum
d:/home/sva/Downloads/emacs/site-lisp/gnus/lisp/gnus-start hides c:/Program Files/Emacs-24.2/lisp/gnus/gnus-start
d:/home/sva/Downloads/emacs/site-lisp/gnus/lisp/gnus-srvr hides c:/Program Files/Emacs-24.2/lisp/gnus/gnus-srvr
d:/home/sva/Downloads/emacs/site-lisp/gnus/lisp/gnus-spec hides c:/Program Files/Emacs-24.2/lisp/gnus/gnus-spec
d:/home/sva/Downloads/emacs/site-lisp/gnus/lisp/gnus-sieve hides c:/Program Files/Emacs-24.2/lisp/gnus/gnus-sieve
d:/home/sva/Downloads/emacs/site-lisp/gnus/lisp/gnus-setup hides c:/Program Files/Emacs-24.2/lisp/gnus/gnus-setup
d:/home/sva/Downloads/emacs/site-lisp/gnus/lisp/gnus-score hides c:/Program Files/Emacs-24.2/lisp/gnus/gnus-score
d:/home/sva/Downloads/emacs/site-lisp/gnus/lisp/gnus-salt hides c:/Program Files/Emacs-24.2/lisp/gnus/gnus-salt
d:/home/sva/Downloads/emacs/site-lisp/gnus/lisp/gnus-registry hides c:/Program Files/Emacs-24.2/lisp/gnus/gnus-registry
d:/home/sva/Downloads/emacs/site-lisp/gnus/lisp/gnus-range hides c:/Program Files/Emacs-24.2/lisp/gnus/gnus-range
d:/home/sva/Downloads/emacs/site-lisp/gnus/lisp/gnus-picon hides c:/Program Files/Emacs-24.2/lisp/gnus/gnus-picon
d:/home/sva/Downloads/emacs/site-lisp/gnus/lisp/gnus-notifications hides c:/Program Files/Emacs-24.2/lisp/gnus/gnus-notifications
d:/home/sva/Downloads/emacs/site-lisp/gnus/lisp/gnus-msg hides c:/Program Files/Emacs-24.2/lisp/gnus/gnus-msg
d:/home/sva/Downloads/emacs/site-lisp/gnus/lisp/gnus-mlspl hides c:/Program Files/Emacs-24.2/lisp/gnus/gnus-mlspl
d:/home/sva/Downloads/emacs/site-lisp/gnus/lisp/gnus-ml hides c:/Program Files/Emacs-24.2/lisp/gnus/gnus-ml
d:/home/sva/Downloads/emacs/site-lisp/gnus/lisp/gnus-mh hides c:/Program Files/Emacs-24.2/lisp/gnus/gnus-mh
d:/home/sva/Downloads/emacs/site-lisp/gnus/lisp/gnus-logic hides c:/Program Files/Emacs-24.2/lisp/gnus/gnus-logic
d:/home/sva/Downloads/emacs/site-lisp/gnus/lisp/gnus-kill hides c:/Program Files/Emacs-24.2/lisp/gnus/gnus-kill
d:/home/sva/Downloads/emacs/site-lisp/gnus/lisp/gnus-int hides c:/Program Files/Emacs-24.2/lisp/gnus/gnus-int
d:/home/sva/Downloads/emacs/site-lisp/gnus/lisp/gnus-html hides c:/Program Files/Emacs-24.2/lisp/gnus/gnus-html
d:/home/sva/Downloads/emacs/site-lisp/gnus/lisp/gnus-group hides c:/Program Files/Emacs-24.2/lisp/gnus/gnus-group
d:/home/sva/Downloads/emacs/site-lisp/gnus/lisp/gnus-gravatar hides c:/Program Files/Emacs-24.2/lisp/gnus/gnus-gravatar
d:/home/sva/Downloads/emacs/site-lisp/gnus/lisp/gnus-fun hides c:/Program Files/Emacs-24.2/lisp/gnus/gnus-fun
d:/home/sva/Downloads/emacs/site-lisp/gnus/lisp/gnus-ems hides c:/Program Files/Emacs-24.2/lisp/gnus/gnus-ems
d:/home/sva/Downloads/emacs/site-lisp/gnus/lisp/gnus-eform hides c:/Program Files/Emacs-24.2/lisp/gnus/gnus-eform
d:/home/sva/Downloads/emacs/site-lisp/gnus/lisp/gnus-dup hides c:/Program Files/Emacs-24.2/lisp/gnus/gnus-dup
d:/home/sva/Downloads/emacs/site-lisp/gnus/lisp/gnus-draft hides c:/Program Files/Emacs-24.2/lisp/gnus/gnus-draft
d:/home/sva/Downloads/emacs/site-lisp/gnus/lisp/gnus-dired hides c:/Program Files/Emacs-24.2/lisp/gnus/gnus-dired
d:/home/sva/Downloads/emacs/site-lisp/gnus/lisp/gnus-diary hides c:/Program Files/Emacs-24.2/lisp/gnus/gnus-diary
d:/home/sva/Downloads/emacs/site-lisp/gnus/lisp/gnus-demon hides c:/Program Files/Emacs-24.2/lisp/gnus/gnus-demon
d:/home/sva/Downloads/emacs/site-lisp/gnus/lisp/gnus-delay hides c:/Program Files/Emacs-24.2/lisp/gnus/gnus-delay
d:/home/sva/Downloads/emacs/site-lisp/gnus/lisp/gnus-cus hides c:/Program Files/Emacs-24.2/lisp/gnus/gnus-cus
d:/home/sva/Downloads/emacs/site-lisp/gnus/lisp/gnus-cite hides c:/Program Files/Emacs-24.2/lisp/gnus/gnus-cite
d:/home/sva/Downloads/emacs/site-lisp/gnus/lisp/gnus-cache hides c:/Program Files/Emacs-24.2/lisp/gnus/gnus-cache
d:/home/sva/Downloads/emacs/site-lisp/gnus/lisp/gnus-bookmark hides c:/Program Files/Emacs-24.2/lisp/gnus/gnus-bookmark
d:/home/sva/Downloads/emacs/site-lisp/gnus/lisp/gnus-bcklg hides c:/Program Files/Emacs-24.2/lisp/gnus/gnus-bcklg
d:/home/sva/Downloads/emacs/site-lisp/gnus/lisp/gnus-async hides c:/Program Files/Emacs-24.2/lisp/gnus/gnus-async
d:/home/sva/Downloads/emacs/site-lisp/gnus/lisp/gnus-art hides c:/Program Files/Emacs-24.2/lisp/gnus/gnus-art
d:/home/sva/Downloads/emacs/site-lisp/gnus/lisp/gnus-agent hides c:/Program Files/Emacs-24.2/lisp/gnus/gnus-agent
d:/home/sva/Downloads/emacs/site-lisp/gnus/lisp/gmm-utils hides c:/Program Files/Emacs-24.2/lisp/gnus/gmm-utils
d:/home/sva/Downloads/emacs/site-lisp/gnus/lisp/flow-fill hides c:/Program Files/Emacs-24.2/lisp/gnus/flow-fill
d:/home/sva/Downloads/emacs/site-lisp/gnus/lisp/ecomplete hides c:/Program Files/Emacs-24.2/lisp/gnus/ecomplete
d:/home/sva/Downloads/emacs/site-lisp/gnus/lisp/deuglify hides c:/Program Files/Emacs-24.2/lisp/gnus/deuglify
d:/home/sva/Downloads/emacs/site-lisp/gnus/lisp/compface hides c:/Program Files/Emacs-24.2/lisp/gnus/compface
d:/home/sva/Downloads/emacs/site-lisp/gnus/lisp/canlock hides c:/Program Files/Emacs-24.2/lisp/gnus/canlock
d:/home/sva/Downloads/emacs/site-lisp/gnus/lisp/auth-source hides c:/Program Files/Emacs-24.2/lisp/gnus/auth-source
d:/home/sva/Downloads/emacs/site-lisp/gnus/lisp/.dir-locals hides c:/Program Files/Emacs-24.2/lisp/gnus/.dir-locals
d:/home/sva/Downloads/emacs/site-lisp/gnus/lisp/time-date hides c:/Program Files/Emacs-24.2/lisp/calendar/time-date
d:/home/sva/Downloads/emacs/site-lisp/gnus/lisp/parse-time hides c:/Program Files/Emacs-24.2/lisp/calendar/parse-time

Features:
(shadow emacsbug helm-command htmlize nxml-uchnm rng-xsd xsd-regexp rng-cmpct
rng-nxml rng-valid rng-loc rng-uri rng-parse nxml-parse rng-match rng-dt
rng-util rng-pttrn nxml-ns nxml-mode nxml-outln nxml-rap nxml-util nxml-glyph
nxml-enc xmltok calc-arith sgml-mode mailalias smtpmail gnus-alias cc-langs
cc-mode cc-fonts cc-guess cc-menus cc-cmds cc-styles cc-align cc-engine
cc-vars cc-defs flow-fill qp sort gnus-cite mm-archive gnus-async gnus-bcklg
gnus-ml hl-line gnus-topic mail-extr nndraft nnmh gnus-agent gnus-srvr
gnus-score score-mode nnvirtual gnus-msg utf-7 nnimap utf7 nnfolder parse-time
gnus-cache bbdb-message sendmail epa-file epa netrc gnutls network-stream
starttls tls nntp gnus-leuven gnus-dired bbdb-gnus gnus-art mm-uu mml2015
mm-view mml-smime smime dig bbdb-mua bbdb-com bbdb timezone org-colview
calc-map calc-stat calc-vec calc-menu calc-aent epg epg-config misearch
multi-isearch fuzzy solar cal-dst cal-iso log-edit pcvs-util add-log
smerge-mode diff-mode vc-cvs vc-rcs vc-dir ewoc vc time-stamp copyright tabify
org-table sh-script smie executable recentf tree-widget vc-git rainbow-mode
flyspell ispell org-id org-gnus org-info org-crypt org-mime org-inlinetask
anything-orgcard ob-sql ob-sh ob-python ob-org ob-ledger ob-latex ob-gnuplot
ob-dot ob-ditaa ob-calc calc-store calc-trail calc-ext calc calc-loaddefs
calc-macs ob-awk ob-R org-special-blocks org-html org-e-odt org-e-beamer
org-e-latex org-e-html table org-e-ascii org-e-publish org-export org-element
org-protocol org-habit org-clock org-exp ob-exp org-agenda holidays
hol-loaddefs vc-dispatcher vc-svn image-file appt diary-lib diary-loaddefs
org-occur-goto mule-util org ob-tangle ob-ref ob-lob ob-table org-footnote
org-src ob-keys org-pcomplete org-list org-faces org-entities noutline outline
org-version ob-emacs-lisp ob-comint ob org-compat org-macs ob-eval cal-menu
calendar cal-loaddefs gnus-sum nnoo gnus-group gnus-undo nnmail mail-source
gnus-start gnus-spec gnus-int gnus-range message dircolors rfc822 mml mml-sec
mm-decode mm-bodies mm-encode mail-parse rfc2231 rfc2047 rfc2045 ietf-drums
mailabbrev gmm-utils mailheader gnus-win gnus gnus-ems gnus-compat nnheader
mail-utils wid-edit auto-complete-config auto-complete popup server saveplace
helm-misc helm-mode helm-files image-dired warnings tramp tramp-compat
tramp-loaddefs shell pcomplete format-spec ffap thingatpt helm-buffers
helm-elscreen helm-tags helm-bookmark helm-adaptative helm-info helm-net
browse-url xml url url-proxy url-privacy url-expand url-methods url-history
url-cookie url-domsuf url-util url-parse auth-source eieio byte-opt bytecomp
byte-compile cconv gnus-util mm-util mail-prsvr password-cache url-vars
mailcap helm-plugin bookmark pp helm-grep helm-regexp grep helm-external
helm-utils dired-sort-map dired-single dired+ dired-x dired-aux dired compile
comint ansi-color ring helm-locate helm-help helm-match-plugin helm-config
helm show-point-mode eldoc edebug redshank skeleton paredit whitespace
hideshow emacs-leuven pp-c-l leuven-theme gnus-load org-loaddefs yasnippet
dropdown-list derived assoc help-mode easymenu find-func eval-expr mic-paren
paren tex-site auto-loads uniquify diff-mode- cl-macs gv edmacro kmacro
idle-require easy-mmode advice help-fns advice-preload cl cl-lib time-date
tooltip ediff-hook vc-hooks lisp-float-type mwheel dos-w32 ls-lisp
w32-common-fns disp-table w32-win w32-vars 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 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 w32 multi-tty emacs)

Best regards,
Fabrice

bug#12906: 24.2.50; Parts of the screen are completely white

[Eli Zaretskii]

> From: "Fabrice Niessen" <fni@missioncriticalit.com>
> Date: Fri, 16 Nov 2012 16:04:44 +0100
> 
> I sometimes have parts of the screen "undisplayed" such in the
> example at http://screencast.com/t/qLMxmSLxYvJ8.
> 
> In the beginning, all the line was white (even the fringe!).
> 
> While moving the cursor around, some characters are redisplayed correctly.
> 
> Paging up and down makes the display correct again.

This is a clear sign that some redisplay optimization is applied when
it shouldn't be.  IOW, Emacs mistakenly thinks the display does not
need to be redrawn.

> However, this is not occurring often, and not reproducible per se -- unluckily.

When that happens next, try typing "M-x".  Just "M-x", without any
command.  If that doesn't help, try "M-x redraw-display RET".

More importantly, post the result of "C-h l" (that's ell, not the
digit one), and try to remember what were you doing immediately before
the incident.  Also, in what mode was the current buffer.

bug#12906: 24.2.50; Parts of the screen are completely white

[Fabrice Niessen]

Eli,

Eli Zaretskii wrote:
>> From: "Fabrice Niessen" <fni-djc/iPCCuDYQheJpep6IedvLeJWuRmrY@public.gmane.org>
>>
>> I sometimes have parts of the screen "undisplayed" such in the
>> example at http://screencast.com/t/qLMxmSLxYvJ8.
>> 
>> In the beginning, all the line was white (even the fringe!).
>> 
>> While moving the cursor around, some characters are redisplayed correctly.
>> 
>> Paging up and down makes the display correct again.
>
> This is a clear sign that some redisplay optimization is applied when
> it shouldn't be.  IOW, Emacs mistakenly thinks the display does not
> need to be redrawn.
>
>> However, this is not occurring often, and not reproducible per se -- unluckily.
>
> When that happens next, try typing "M-x".  Just "M-x", without any
> command.  If that doesn't help, try "M-x redraw-display RET".

I'll do, to be sure.

> More importantly, post the result of "C-h l" (that's ell, not the
> digit one), and try to remember what were you doing immediately before
> the incident.

Yep, the lossage buffer.

> Also, in what mode was the current buffer.

It the case I posted here, it was an Org mode buffer. But all my buffers are
(more or less) either in Org, or in Gnus/Message.

Anyway, I'll give you the required information next time it happens.

Best regards,
Fabrice

bug#12906: 24.2.50; Parts of the screen are completely white

[Fabrice Niessen]

Hello Eli,

Eli Zaretskii wrote:
>> From: "Fabrice Niessen" <fni-djc/iPCCuDYQheJpep6IedvLeJWuRmrY@public.gmane.org>
>>
>> I sometimes have parts of the screen "undisplayed" such in the
>> example at http://screencast.com/t/qLMxmSLxYvJ8.
>> 
>> In the beginning, all the line was white (even the fringe!).
>> 
>> While moving the cursor around, some characters are redisplayed correctly.
>> 
>> Paging up and down makes the display correct again.
>
> This is a clear sign that some redisplay optimization is applied when
> it shouldn't be.  IOW, Emacs mistakenly thinks the display does not
> need to be redrawn.
>
>> However, this is not occurring often, and not reproducible per se -- unluckily.
>
> When that happens next, try typing "M-x".  Just "M-x", without any
> command.

That did not help, in the Org buffer I was just looking at...

> If that doesn't help, try "M-x redraw-display RET".

That did work -- in fact, before applying it!  Why?  Because I typed M-x red
TAB, and a buffer came on the right side of my screen, full with completions.
When that one appeared, the display was corrected.

> More importantly, post the result of "C-h l" (that's ell, not the
> digit one), and try to remember what were you doing immediately before
> the incident.  Also, in what mode was the current buffer.

Just browsing the file with C-v/M-v.

I'm sorry, but, by answering to this email first, I'd lost what you wanted
from C-h l.

Best regards,
Fabrice

bug#12906: 24.2.50; Parts of the screen are completely white

[Fabrice Niessen]

Elli,

"Fabrice Niessen" wrote:
> Eli Zaretskii wrote:
>>> From: "Fabrice Niessen" <fni-djc/iPCCuDYQheJpep6IedvLeJWuRmrY@public.gmane.org>
>>>
>>> I sometimes have parts of the screen "undisplayed" such in the
>>> example at http://screencast.com/t/qLMxmSLxYvJ8.
>>> 
>>> In the beginning, all the line was white (even the fringe!).
>>> 
>>> While moving the cursor around, some characters are redisplayed correctly.
>>> 
>>> Paging up and down makes the display correct again.
>>
>> This is a clear sign that some redisplay optimization is applied when
>> it shouldn't be.  IOW, Emacs mistakenly thinks the display does not
>> need to be redrawn.
>>
>>> However, this is not occurring often, and not reproducible per se -- unluckily.
>>
>> When that happens next, try typing "M-x".  Just "M-x", without any
>> command.
>
> That did not help, in the Org buffer I was just looking at...
>
>> If that doesn't help, try "M-x redraw-display RET".
>
> That did work -- in fact, before applying it!  Why?  Because I typed M-x red
> TAB, and a buffer came on the right side of my screen, full with completions.
> When that one appeared, the display was corrected.
>
>> More importantly, post the result of "C-h l" (that's ell, not the
>> digit one), and try to remember what were you doing immediately before
>> the incident.  Also, in what mode was the current buffer.
>
> Just browsing the file with C-v/M-v.
>
> I'm sorry, but, by answering to this email first, I'd lost what you wanted
> from C-h l.

This time, I could write redraw-display without TAB'ing. It did redraw the
screen correctly.

And here the lossage view you asked for:

--8<---------------cut here---------------start------------->8---
SPC SPC SPC SPC SPC SPC <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> <down> <down> <down> <down> <down> <down> <down>
<down> <down> <down> <down> <down> <down> <down> <down>
<down> <down> <up> <up> <up> <up> <up> <up> <up> <up>
<up> <left> C-a C-c C-v C-d <down> <down> <down> <down>
<down> <down> <down> <down> <down> <down> <down> <down>
<down> <up> <up> <up> <up> <up> <up> <up> <up> <up>
<up> <up> <up> <up> <up> <up> <up> <up> <up> <up> <up>
<up> <up> <up> <up> C-c C-v C-d <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> <down> <down> <down> <down> <down> <down>
<down> <down> <down> <down> <down> <down> <down> <down>
<down> <down> <down> <down> <down> C-x C-s <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> <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>
M-x <up> r e d r a w - d s <backspace> i s p l a y
<return> C-h l

[back]
--8<---------------cut here---------------end--------------->8---

On the big Org file (13,000 lines, 454 KB) I'm working on, the problem is
pretty reproducible...

Best regards,
Fabrice

bug#12906: 24.2.50; Parts of the screen are completely white

[Eli Zaretskii]

> From: "Fabrice Niessen" <fni@missioncriticalit.com>
> Cc: 12906@debbugs.gnu.org
> Date: Sun, 18 Nov 2012 21:10:12 +0100
> 
> > If that doesn't help, try "M-x redraw-display RET".
> 
> That did work -- in fact, before applying it!  Why?  Because I typed M-x red
> TAB, and a buffer came on the right side of my screen, full with completions.
> When that one appeared, the display was corrected.

That's expected.  Popping another buffer requires a thorough
redisplay.

> > More importantly, post the result of "C-h l" (that's ell, not the
> > digit one), and try to remember what were you doing immediately before
> > the incident.  Also, in what mode was the current buffer.
> 
> Just browsing the file with C-v/M-v.

In that case, please tell what customizations do you have that are
related to scrolling, and perhaps also post the Org file you were
browsing, or part thereof.

Also, you should probably update to the latest trunk or branch,
whatever you were tracking, to make sure the problem still exists in
the latest codebase.

> I'm sorry, but, by answering to this email first, I'd lost what you wanted
> from C-h l.

If I'd see there only C-v/M-v, that's not a big loss.

bug#12906: 24.2.50; Parts of the screen are completely white

[Eli Zaretskii]

> From: "Fabrice Niessen" <fni@missioncriticalit.com>
> Cc: 12906@debbugs.gnu.org
> Date: Sun, 18 Nov 2012 21:24:37 +0100
> 
> On the big Org file (13,000 lines, 454 KB) I'm working on, the problem is
> pretty reproducible...

Can you send it to me?

bug#12906: 24.2.50; Parts of the screen are completely white

[Fabrice Niessen]

Eli,

Eli Zaretskii wrote:
>> From: "Fabrice Niessen" <fni-djc/iPCCuDYQheJpep6IedvLeJWuRmrY@public.gmane.org>
>>
>> On the big Org file (13,000 lines, 454 KB) I'm working on, the problem is
>> pretty reproducible...
>
> Can you send it to me?

It's my .emacs LP'ed (Literate Programming) in a big Org file. Find it there:

https://www.assembla.com/code/emacs-leuven/git/nodes/master/emacs-leuven.txt

Best regards,
Fabrice

bug#12906: 24.2.50; Parts of the screen are completely white

[Fabrice Niessen]

Eli,

"Fabrice Niessen" wrote:
> Eli Zaretskii wrote:
>>> From: "Fabrice Niessen" <fni-djc/iPCCuDYQheJpep6IedvLeJWuRmrY@public.gmane.org>
>>>
>>> On the big Org file (13,000 lines, 454 KB) I'm working on, the problem is
>>> pretty reproducible...
>>
>> Can you send it to me?
>
> It's my .emacs LP'ed (Literate Programming) in a big Org file. Find it there:
>
> https://www.assembla.com/code/emacs-leuven/git/nodes/master/emacs-leuven.txt

Could you reproduce it?  I have it quite often. Another example, if that can
be helpful:

http://screencast.com/t/2J3VIgiGn

Though, I consider that minor.

Best regards,
Fabrice

bug#12906: 24.2.50; Parts of the screen are completely white

[Eli Zaretskii]

> From: "Fabrice Niessen" <fni@missioncriticalit.com>
> Cc: 12906@debbugs.gnu.org
> Date: Tue, 20 Nov 2012 19:39:50 +0100
> 
> > https://www.assembla.com/code/emacs-leuven/git/nodes/master/emacs-leuven.txt
> 
> Could you reproduce it?

Didn't have time yet, will do in a few days.

bug#12906: 24.2.50; Parts of the screen are completely white

[Fabrice Niessen]

Eli,

Eli Zaretskii wrote:
>> From: "Fabrice Niessen" <fni-djc/iPCCuDYQheJpep6IedvLeJWuRmrY@public.gmane.org>
>> Cc: 12906-ubl+/3LiMTaZdePnXv/OxA@public.gmane.org
>> Date: Sun, 18 Nov 2012 21:24:37 +0100
>> 
>> On the big Org file (13,000 lines, 454 KB) I'm working on, the problem is
>> pretty reproducible...
>
> Can you send it to me?

Just to let you know, this problem still occurs with GNU Emacs 24.3.50.1
(i386-mingw-nt5.1.2600) of 2012-12-03 on MS-W7-DANI.

Best regards,
Fabrice

bug#12906: 24.2.50; Parts of the screen are completely white

[Fabrice Niessen]

Eli,

> Eli Zaretskii wrote:
>>> From: "Fabrice Niessen" <fni-djc/iPCCuDYQheJpep6IedvLeJWuRmrY@public.gmane.org>
>>> Cc: 12906-ubl+/3LiMTaZdePnXv/OxA@public.gmane.org
>>> Date: Sun, 18 Nov 2012 21:24:37 +0100
>>> 
>>> On the big Org file (13,000 lines, 454 KB) I'm working on, the problem is
>>> pretty reproducible...
>>
>> Can you send it to me?
>
> Just to let you know, this problem still occurs with GNU Emacs 24.3.50.1
> (i386-mingw-nt5.1.2600) of 2012-12-03 on MS-W7-DANI.

As asked by Stefan, I'm testing the emacs-24 branch.

And I can confirm the above problem is *still* occurring with:

  GNU Emacs 24.2.91.1 (i386-mingw-nt5.1.2600) of 2012-12-15 on MS-W7-DANI

Best regards,
Fabrice

bug#12906: 24.2.50; Parts of the screen are completely white

[Stefan Monnier]

severity 12906 important
thanks

>>>> On the big Org file (13,000 lines, 454 KB) I'm working on, the problem is
>>>> pretty reproducible...
>>> Can you send it to me?
>> Just to let you know, this problem still occurs with GNU Emacs 24.3.50.1
>> (i386-mingw-nt5.1.2600) of 2012-12-03 on MS-W7-DANI.
> As asked by Stefan, I'm testing the emacs-24 branch.
> And I can confirm the above problem is *still* occurring with:
>   GNU Emacs 24.2.91.1 (i386-mingw-nt5.1.2600) of 2012-12-15 on MS-W7-DANI

Thanks, bumping its severity accordingly,


        Stefan

bug#12906: 24.2.50; Parts of the screen are completely white

[Eli Zaretskii]

> From: "Fabrice Niessen" <fni@missioncriticalit.com>
> Cc: 12906@debbugs.gnu.org
> Date: Tue, 18 Dec 2012 23:50:38 +0100
> 
> Eli,
> 
> > Eli Zaretskii wrote:
> >>> From: "Fabrice Niessen" <fni@missioncriticalit.com>
> >>> Cc: 12906@debbugs.gnu.org
> >>> Date: Sun, 18 Nov 2012 21:24:37 +0100
> >>> 
> >>> On the big Org file (13,000 lines, 454 KB) I'm working on, the problem is
> >>> pretty reproducible...
> >>
> >> Can you send it to me?
> >
> > Just to let you know, this problem still occurs with GNU Emacs 24.3.50.1
> > (i386-mingw-nt5.1.2600) of 2012-12-03 on MS-W7-DANI.
> 
> As asked by Stefan, I'm testing the emacs-24 branch.
> 
> And I can confirm the above problem is *still* occurring with:
> 
>   GNU Emacs 24.2.91.1 (i386-mingw-nt5.1.2600) of 2012-12-15 on MS-W7-DANI

I'm sorry, but I cannot reproduce the problem, using the file you
mentioned, at least not in "emacs -Q".

You have a lot of optional features turned on; any chance of finding
out some minimal subset of them that still causes the problem?

bug#12906: 24.2.50; Parts of the screen are completely white

[Fabrice Niessen]

Eli,

Eli Zaretskii wrote:
>> From: "Fabrice Niessen" <fni-djc/iPCCuDYQheJpep6IedvLeJWuRmrY@public.gmane.org>
>>
>>>>> On the big Org file (13,000 lines, 454 KB) I'm working on, the problem is
>>>>> pretty reproducible...
>>>>
>>>> Can you send it to me?
>>>
>>> Just to let you know, this problem still occurs with GNU Emacs 24.3.50.1
>>> (i386-mingw-nt5.1.2600) of 2012-12-03 on MS-W7-DANI.
>>
>> As asked by Stefan, I'm testing the emacs-24 branch.
>>
>> And I can confirm the above problem is *still* occurring with:
>>
>>   GNU Emacs 24.2.91.1 (i386-mingw-nt5.1.2600) of 2012-12-15 on MS-W7-DANI
>
> I'm sorry, but I cannot reproduce the problem, using the file you
> mentioned, at least not in "emacs -Q".
>
> You have a lot of optional features turned on; any chance of finding
> out some minimal subset of them that still causes the problem?

Because of heavy workload (with the end of year holidays and so on), I cannot
commit on being able to free up the time needed to do so, if this is
configuration related.

However, the first settings I'd suspect would be in the "Controlling the
display" block. I'm copying it in case it'd trigger some alarm for someone:

--8<---------------cut here---------------start------------->8---
  ;; keep screen position of point when scrolling
  (setq scroll-preserve-screen-position t)

  ;; better scrolling in Emacs (doing a <PageDown> followed by a <PageUp> will
  ;; place the point at the same place)
  (when (locate-library "pager")
    (autoload 'pager-page-up "pager" nil t)
    (autoload 'pager-page-down "pager" nil t)

    (global-set-key (kbd "<prior>") 'pager-page-up)
    (global-set-key (kbd "<next>") 'pager-page-down))

  ;; ;; scroll one line at a time
  ;; (setq scroll-step 1)

  ;; redisplay will never recenter point
  (setq scroll-conservatively 10000)

  ;; ;; number of lines of margin at the top and bottom of a window
  ;; (setq scroll-margin 1)

  ;; scrolling down looks much better
  (setq auto-window-vscroll nil)

  ;; ;; display update isn't paused when input is detected
  ;; (setq redisplay-dont-pause t) ;; default value

  ;; enable the use of the command `narrow-to-region' without confirmation
  (put 'narrow-to-region 'disabled nil)

  ;; highlight FIXME notes
  (defvar my/highlight-regexps
    "\\(TODO\\|FIXME\\|BUG\\|XXX\\|[Ee]rror\\|ERROR\\|[Ww]arning\\|WARNING\\)"
    "Patterns to highlight.")

  (defface my/highlight-face
    '((t (:weight normal :slant normal :box '(:line-width 1 :color "#CC0000")
          :foreground "#CC0000" :background "#FFFF88")))
    "Face for making FIXME and other warnings stand out.")

  (defvar my/highlight-org-regexps
    "\\(FIXME\\|BUG\\|XXX\\|[Ee]rror\\|[Ww]arning\\|WARNING\\)"
    "Patterns to highlight (for Org mode only, to ensure no conflict with the
  Org mode TODO keyword).")

  ;; set up highlighting of special patterns for proper selected major modes
  ;; only
  (dolist (mode '(fundamental-mode
                  text-mode))
    (font-lock-add-keywords mode
     `((,my/highlight-regexps 1 'my/highlight-face prepend))))

  ;; set up highlighting of special patterns for Org mode only
  (dolist (mode '(org-mode))
    (font-lock-add-keywords mode
     `((,my/highlight-org-regexps 1 'my/highlight-face prepend))))

  ;; add fontification patterns (even in comments) to a selected major
  ;; mode *and* all major modes derived from it
  (defun my/font-lock-keywords ()
    (interactive)
    (font-lock-add-keywords nil ;; in the current buffer
     `((,my/highlight-regexps 1 'my/highlight-face prepend))))
  ;; FIXME                     0                     t

  ;; set up highlighting of special patterns for selected major modes *and*
  ;; all major modes derived from them
  (dolist (hook '(prog-mode-hook
                  ;; text-mode-hook ;; avoid Org
                  css-mode-hook ;; fundamental
                  latex-mode-hook
                  shell-mode-hook ;; fundamental (works in *shell* buffers!)
                  ssh-config-mode-hook))
    (add-hook hook 'my/font-lock-keywords))

  ;; stealth fontification should show status messages
  (setq jit-lock-stealth-verbose t)

  ;; colorize color names in buffers
  (GNUEmacs
   (when (locate-library "rainbow-mode")
     (autoload 'rainbow-mode "rainbow-mode" nil t)))

  ;; visually indicate buffer boundaries and scrolling
  (setq indicate-buffer-boundaries t)

  ;; highlight trailing whitespaces in all modes
  (setq-default show-trailing-whitespace t)

  ;; visually indicate empty lines after the buffer end
  (setq-default indicate-empty-lines t)

  (GNUEmacs
   ;; whitespace mode
   (add-hook 'text-mode-hook
             (lambda ()
               (whitespace-mode 1)))

   (add-hook 'prog-mode-hook
             (lambda ()
               (whitespace-mode 1)))

   (eval-after-load "whitespace"
     '(progn
        ;; which kind of blank is visualized
        (setq whitespace-style
              '(face trailing tabs
                ;; lines-tail
                indentation::space space-mark tab-mark))

        ;; column beyond which the line is highlighted
        (setq whitespace-line-column 80)

        ;; mappings for displaying characters
        (setq whitespace-display-mappings
              '((space-mark ?\xA0 [?\u00B7] [?.]) ;; hard space - centered dot
                (tab-mark ?\t [?\u00BB ?\t] [?\\ ?\t]))) ;; tab - left quote mark
        )))

  ;; show the line number in each mode line
  (line-number-mode 1)

  ;; show the column number in each mode line
  (column-number-mode 1)

  ;; use inactive face for mode-line in non-selected windows
  (setq mode-line-in-non-selected-windows t)

  (GNUEmacs
   ;; using cursor color to indicate some modes (read-only, insert and
   ;; overwrite modes)
   (setq my/set-cursor-color-color "")
   (setq my/set-cursor-color-buffer "")

   (defun my/set-cursor-color-according-to-mode ()
     "Change cursor color according to some minor modes."
     (let ((color
            (if buffer-read-only "purple1"
              (if overwrite-mode "red"
                "#15FF00"))))  ; insert mode
       (unless (and (string= color my/set-cursor-color-color)
                    (string= (buffer-name) my/set-cursor-color-buffer))
         (set-cursor-color (setq my/set-cursor-color-color color))
         (setq my/set-cursor-color-buffer (buffer-name)))))

   (add-hook 'post-command-hook 'my/set-cursor-color-according-to-mode))

  ;; respect the value of `truncate-lines' in all windows less than the
  ;; full width of the frame
  (setq truncate-partial-width-windows nil)
--8<---------------cut here---------------end--------------->8---

I *will* work with all these settings commented for the following hours and
days, just to see whether the problem appears or not -- but I won't be able to
dissecate all the other settings now, if not related to something there.

Best regards,
Fabrice

bug#12906: 24.2.50; Parts of the screen are completely white

[Eli Zaretskii]

> From: "Fabrice Niessen" <fni@missioncriticalit.com>
> Cc: 12906@debbugs.gnu.org
> Date: Thu, 20 Dec 2012 09:38:04 +0100
> 
> Because of heavy workload (with the end of year holidays and so on), I cannot
> commit on being able to free up the time needed to do so, if this is
> configuration related.

Not really configuration related.  Rather, something in your
configuration triggers the bug.  And it's undoubtedly a bug, since
redraw-display fixes the display: some redisplay optimization
somewhere decides it's okay to take a shortcut, which it shouldn't.

> However, the first settings I'd suspect would be in the "Controlling the
> display" block. I'm copying it in case it'd trigger some alarm for someone:

Thanks, I will try with some of these settings.

> I *will* work with all these settings commented for the following hours and
> days, just to see whether the problem appears or not

Thanks, that will help.

bug#12906: 24.2.50; Parts of the screen are completely white

[Fabrice Niessen]

Eli,

Eli Zaretskii wrote:
>> From: "Fabrice Niessen" <fni-djc/iPCCuDYQheJpep6IedvLeJWuRmrY@public.gmane.org>
>>
>> Because of heavy workload (with the end of year holidays and so on), I cannot
>> commit on being able to free up the time needed to do so, if this is
>> configuration related.
>
> Not really configuration related.  Rather, something in your
> configuration triggers the bug.  And it's undoubtedly a bug, since
> redraw-display fixes the display: some redisplay optimization
> somewhere decides it's okay to take a shortcut, which it shouldn't.
>
>> However, the first settings I'd suspect would be in the "Controlling the
>> display" block. I'm copying it in case it'd trigger some alarm for someone:
>
> Thanks, I will try with some of these settings.

Another thought: I've observed that in Org buffers -- but I almost exclusively
work in such buffers, nowadays -- with "literate programming" aspects (I mean:
with code blocks inserted in the flow of the text).

And, something that's not on by default about those blocks is:

--8<---------------cut here---------------start------------->8---
  ;; fontify code in code blocks
  (setq org-src-fontify-natively t)
--8<---------------cut here---------------end--------------->8---

Please add that as well in your test config, it could count!

Thinking more about it, I'm not sure (anymore) I've ever seen the display
problem in pure Emacs Lisp buffers, for example -- though, this may prove
wrong (assumption to be taken with lots of caution).

>> I *will* work with all these settings commented for the following hours and
>> days, just to see whether the problem appears or not
>
> Thanks, that will help.

I hope we'll catch it!

Best regards,
Fabrice

bug#12906: 24.2.50; Parts of the screen are completely white

[Fabrice Niessen]

Eli,

> Eli Zaretskii wrote:
>>> From: "Fabrice Niessen" <fni-djc/iPCCuDYQheJpep6IedvLeJWuRmrY@public.gmane.org>
>>>
>>> Because of heavy workload (with the end of year holidays and so on), I cannot
>>> commit on being able to free up the time needed to do so, if this is
>>> configuration related.
>>
>> Not really configuration related.  Rather, something in your
>> configuration triggers the bug.  And it's undoubtedly a bug, since
>> redraw-display fixes the display: some redisplay optimization
>> somewhere decides it's okay to take a shortcut, which it shouldn't.
>>
>>> However, the first settings I'd suspect would be in the "Controlling the
>>> display" block. I'm copying it in case it'd trigger some alarm for someone:
>>
>> Thanks, I will try with some of these settings.
>
> Another thought: I've observed that in Org buffers -- but I almost exclusively
> work in such buffers, nowadays -- with "literate programming" aspects (I mean:
> with code blocks inserted in the flow of the text).
>
> And, something that's not on by default about those blocks is:
>
>   ;; fontify code in code blocks
>   (setq org-src-fontify-natively t)
>
> Please add that as well in your test config, it could count!
>
> Thinking more about it, I'm not sure (anymore) I've ever seen the display
> problem in pure Emacs Lisp buffers, for example -- though, this may prove
> wrong (assumption to be taken with lots of caution).

After one day without my settings about "Controlling the display" (given
previously), I did not see the problem (yet?). Hence, a furious envy to say
that the "trigger" settings provoking the problem would be in that given
configuration. Just for you to know.

Take care that this conclusion is only based on time and observation, though.
But I'm quite confident about that first observation.

FYI, I did not undo the "fontify code" setting in my config for the moment.
Hence, that Org setting should not be the problem. Only one (or several) of
the other ones.

Best regards,
Fabrice

bug#12906: 24.2.50; Parts of the screen are completely white

[Eli Zaretskii]

> From: "Fabrice Niessen" <fni@missioncriticalit.com>
> Cc: 12906@debbugs.gnu.org
> Date: Thu, 20 Dec 2012 09:38:04 +0100
> 
>   ;; better scrolling in Emacs (doing a <PageDown> followed by a <PageUp> will
>   ;; place the point at the same place)
>   (when (locate-library "pager")
>     (autoload 'pager-page-up "pager" nil t)
>     (autoload 'pager-page-down "pager" nil t)
> 
>     (global-set-key (kbd "<prior>") 'pager-page-up)
>     (global-set-key (kbd "<next>") 'pager-page-down))

Where can I find this "pager" library, of the version you are using?

bug#12906: 24.2.50; Parts of the screen are completely white

[Fabrice Niessen]

[-- Attachment #1: Type: text/plain, Size: 717 bytes --]

Eli,

Eli Zaretskii wrote:
>> From: "Fabrice Niessen" <fni-djc/iPCCuDYQheJpep6IedvLeJWuRmrY@public.gmane.org>
>> Cc: 12906-ubl+/3LiMTaZdePnXv/OxA@public.gmane.org
>> Date: Thu, 20 Dec 2012 09:38:04 +0100
>> 
>>   ;; better scrolling in Emacs (doing a <PageDown> followed by a <PageUp> will
>>   ;; place the point at the same place)
>>   (when (locate-library "pager")
>>     (autoload 'pager-page-up "pager" nil t)
>>     (autoload 'pager-page-down "pager" nil t)
>> 
>>     (global-set-key (kbd "<prior>") 'pager-page-up)
>>     (global-set-key (kbd "<next>") 'pager-page-down))
>
> Where can I find this "pager" library, of the version you are using?

Here, attached, the version I'm using.

Best regards,
Fabrice

[-- Attachment #2: pager.el --]
[-- Type: application/emacs-lisp, Size: 5758 bytes --]

bug#12906: 24.2.50; Parts of the screen are completely white

[Eli Zaretskii]

> From: "Fabrice Niessen" <fni@missioncriticalit.com>
> Date: Sat, 22 Dec 2012 22:16:15 +0100
> Cc: 12906@debbugs.gnu.org
> 
> Eli Zaretskii wrote:
> >> From: "Fabrice Niessen" <fni@missioncriticalit.com>
> >> Cc: 12906@debbugs.gnu.org
> >> Date: Thu, 20 Dec 2012 09:38:04 +0100
> >> 
> >>   ;; better scrolling in Emacs (doing a <PageDown> followed by a <PageUp> will
> >>   ;; place the point at the same place)
> >>   (when (locate-library "pager")
> >>     (autoload 'pager-page-up "pager" nil t)
> >>     (autoload 'pager-page-down "pager" nil t)
> >> 
> >>     (global-set-key (kbd "<prior>") 'pager-page-up)
> >>     (global-set-key (kbd "<next>") 'pager-page-down))
> >
> > Where can I find this "pager" library, of the version you are using?
> 
> Here, attached, the version I'm using.

Do you still see the problem in the current Emacs?  If so, did you
bisect your customizations further and found the "guilty" one(s)?

bug#12906: 24.2.50; Parts of the screen are completely white

[Fabrice Niessen]

Eli Zaretskii wrote:
>> From: "Fabrice Niessen" <fni-djc/iPCCuDYQheJpep6IedvLeJWuRmrY@public.gmane.org>
>> Date: Sat, 22 Dec 2012 22:16:15 +0100
>> Cc: 12906-ubl+/3LiMTaZdePnXv/OxA@public.gmane.org
>> 
>> Eli Zaretskii wrote:
>> >> From: "Fabrice Niessen" <fni-djc/iPCCuDYQheJpep6IedvLeJWuRmrY@public.gmane.org>
>> >> Cc: 12906-ubl+/3LiMTaZdePnXv/OxA@public.gmane.org
>> >> Date: Thu, 20 Dec 2012 09:38:04 +0100
>> >> 
>> >>   ;; better scrolling in Emacs (doing a <PageDown> followed by a <PageUp> will
>> >>   ;; place the point at the same place)
>> >>   (when (locate-library "pager")
>> >>     (autoload 'pager-page-up "pager" nil t)
>> >>     (autoload 'pager-page-down "pager" nil t)
>> >> 
>> >>     (global-set-key (kbd "<prior>") 'pager-page-up)
>> >>     (global-set-key (kbd "<next>") 'pager-page-down))
>> >
>> > Where can I find this "pager" library, of the version you are using?
>> 
>> Here, attached, the version I'm using.
>
> Do you still see the problem in the current Emacs?  If so, did you
> bisect your customizations further and found the "guilty" one(s)?

I did NOT notice this for quite a long time.  You can safely close it.

Thanks,
Fabrice Niessen

-- 
Fabrice Niessen
Leuven, Belgium
http://www.pirilampo.org/

bug#12906: 24.2.50; Parts of the screen are completely white

[Eli Zaretskii]

> From: Fabrice Niessen <fni-news@pirilampo.org>
> Cc: 12906@debbugs.gnu.org
> Date: Wed, 25 Jun 2014 13:51:03 +0200
> 
> > Do you still see the problem in the current Emacs?  If so, did you
> > bisect your customizations further and found the "guilty" one(s)?
> 
> I did NOT notice this for quite a long time.  You can safely close it.

Thanks, closing.