bug#7881: 23.2.91; Bold spaces sometimes(?) underlined in man pages

[Reuben Thomas <rrt@sc3d.org>]

If I view abort(3) in Emacs 23.2.91 on my GNU/Linux system, I get a line

       #include <stdlib.h>

where the space between “include” and “<stdlib.h>” is shown underlined.
None of the rest of the text is underlined. This does not happen in an
xterm, and the markup is:

\fB#include <stdlib.h>

which looks fine.

To reproduce, from emacs -Q: M-x man abort RET


In GNU Emacs 23.2.91.4 (i686-pc-linux-gnu, GTK+ Version 2.22.0)
 of 2011-01-13 on canta
Windowing system distributor `The X.Org Foundation', version 11.0.10900000
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: en_GB.UTF-8
  value of $XMODIFIERS: nil
  locale-coding-system: utf-8-unix
  default enable-multibyte-characters: t

Major mode: C/l

Minor modes in effect:
  diff-auto-refine-mode: t
  shell-dirtrack-mode: t
  flyspell-mode: t
  recentf-mode: t
  show-paren-mode: t
  savehist-mode: t
  minibuffer-electric-default-mode: t
  iswitchb-mode: t
  icomplete-mode: t
  global-whitespace-mode: t
  whitespace-mode: t
  global-auto-revert-mode: t
  desktop-save-mode: t
  yas/global-mode: t
  yas/minor-mode: t
  mouse-wheel-mode: t
  file-name-shadow-mode: t
  global-font-lock-mode: t
  font-lock-mode: t
  blink-cursor-mode: t
  auto-encryption-mode: t
  auto-compression-mode: t
  column-number-mode: t
  line-number-mode: t
  transient-mark-mode: t
  abbrev-mode: t

Recent input:
<backspace> <backspace> <backspace> <backspace> r e 
p <return> SPC d i e SPC * . c <return> M-x g r e p 
<return> e x i t SPC * . c <return> <M-backspace> r 
e t u r n SPC - <backspace> - <backspace> - E B A D 
F <left> <left> <left> <left> <left> <backspace> C-e 
; <return> b r e a k ; <return> } C-x C-s C-a <up> 
<up> C-k C-n C-n C-s C-y C-g C-a C-y C-p <tab> <up> 
<up> <up> <up> <down> C-a C-k C-k C-_ C-_ C-n C-k C-_ 
C-_ C-_ C-_ C-_ C-_ C-_ C-_ C-n C-n C-e <return> r 
e t u r n SPC <backspace> <backspace> <backspace> <backspace> 
<backspace> <backspace> a b o <backspace> <backspace> 
<backspace> <backspace> a b o r t SPC 9 ) <backspace> 
<backspace> <backspace> S-SPC ( ) ; C-x C-s C-a C-o 
C-n C-e SPC / * S-SPC C a n ' t SPC g e t SPC h e r 
e . * SPC ? <backspace> <backspace> / <backspace> <backspace> 
SPC * / C-x C-s M-x m a n <return> a a <backspace> 
b o r t <return> C-x b <return> C-x b <return> 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-f C-f C-f C-f C-f C-f C-f C-f C-f C-f C-f C-f C-f 
C-f C-f C-f C-f C-f C-f C-b C-b C-b C-b C-a C-f C-f 
C-f C-f C-f C-f C-f C-f C-f C-f C-f C-f C-f C-f C-f 
C-f C-b C-x k <return> M-SPC M-x r e p o r t - e m 
a c s - b u g <return> m a n SPC p a g e s SPC C-g 
M-x m <backspace> r e p o r t - e m <tab> <return>

Recent messages:
Undo! [3 times]
Redo! [2 times]
Undo! [5 times]
Saving file /home/rrt/repo/grep-decompress/src/zinput.c...
Wrote /home/rrt/repo/grep-decompress/src/zinput.c
Saving file /home/rrt/repo/grep-decompress/src/zinput.c...
Wrote /home/rrt/repo/grep-decompress/src/zinput.c
Invoking man abort in the background
Please wait: formatting the abort man page...
abort man page formatted
Quit

Load-path shadows:
/home/rrt/.emacs.d/elpa/ruby-mode-1.1/ruby-mode hides /usr/share/emacs-snapshot/site-lisp/ruby1.8-elisp/ruby-mode
/home/rrt/local/share/emacs/site-lisp/popup hides /usr/local/share/emacs/23.2.91/site-lisp/auto-complete/popup
/home/rrt/local/share/emacs/site-lisp/fuzzy hides /usr/local/share/emacs/23.2.91/site-lisp/auto-complete/fuzzy
/home/rrt/.emacs.d/elpa/css-mode-1.0/css-mode hides /usr/local/share/emacs/23.2.91/site-lisp/css-mode/css-mode
/home/rrt/.emacs.d/elpa/dictionary-1.8.7/link hides /usr/local/share/emacs/23.2.91/site-lisp/dictionary-el/link
/home/rrt/.emacs.d/elpa/dictionary-1.8.7/connection hides /usr/local/share/emacs/23.2.91/site-lisp/dictionary-el/connection
/home/rrt/.emacs.d/elpa/dictionary-1.8.7/dictionary-init hides /usr/local/share/emacs/23.2.91/site-lisp/dictionary-el/dictionary-init
/home/rrt/.emacs.d/elpa/dictionary-1.8.7/dictionary hides /usr/local/share/emacs/23.2.91/site-lisp/dictionary-el/dictionary
/home/rrt/.emacs.d/elpa/css-mode-1.0/css-mode hides /usr/local/share/emacs/23.2.91/lisp/textmodes/css-mode
/home/rrt/.emacs.d/elpa/ruby-mode-1.1/ruby-mode hides /usr/local/share/emacs/23.2.91/lisp/progmodes/ruby-mode
/home/rrt/.emacs.d/elpa/css-mode-1.0/css-mode hides /usr/share/emacs/site-lisp/css-mode/css-mode
/usr/local/share/emacs/23.2.91/site-lisp/auctex/tex-info hides /usr/share/emacs/site-lisp/auctex/tex-info
/usr/local/share/emacs/23.2.91/site-lisp/auctex/context-nl hides /usr/share/emacs/site-lisp/auctex/context-nl
/usr/local/share/emacs/23.2.91/site-lisp/auctex/context-en hides /usr/share/emacs/site-lisp/auctex/context-en
/usr/local/share/emacs/23.2.91/site-lisp/auctex/latex hides /usr/share/emacs/site-lisp/auctex/latex
/usr/local/share/emacs/23.2.91/site-lisp/auctex/tex-mik hides /usr/share/emacs/site-lisp/auctex/tex-mik
/usr/local/share/emacs/23.2.91/site-lisp/dictionary-el/lpath hides /usr/share/emacs/site-lisp/auctex/lpath
/usr/local/share/emacs/23.2.91/site-lisp/auctex/tex-buf hides /usr/share/emacs/site-lisp/auctex/tex-buf
/usr/local/share/emacs/23.2.91/site-lisp/auctex/tex-jp hides /usr/share/emacs/site-lisp/auctex/tex-jp
/usr/local/share/emacs/23.2.91/site-lisp/auctex/tex-bar hides /usr/share/emacs/site-lisp/auctex/tex-bar
/usr/local/share/emacs/23.2.91/site-lisp/auctex/tex hides /usr/share/emacs/site-lisp/auctex/tex
/usr/local/share/emacs/23.2.91/site-lisp/auctex/multi-prompt hides /usr/share/emacs/site-lisp/auctex/multi-prompt
/usr/local/share/emacs/23.2.91/site-lisp/auctex/tex-fptex hides /usr/share/emacs/site-lisp/auctex/tex-fptex
/usr/local/share/emacs/23.2.91/site-lisp/auctex/tex-font hides /usr/share/emacs/site-lisp/auctex/tex-font
/usr/local/share/emacs/23.2.91/site-lisp/auctex/tex-fold hides /usr/share/emacs/site-lisp/auctex/tex-fold
/usr/local/share/emacs/23.2.91/site-lisp/auctex/texmathp hides /usr/share/emacs/site-lisp/auctex/texmathp
/usr/local/share/emacs/23.2.91/site-lisp/auctex/context hides /usr/share/emacs/site-lisp/auctex/context
/usr/local/share/emacs/23.2.91/site-lisp/auctex/font-latex hides /usr/share/emacs/site-lisp/auctex/font-latex
/usr/local/share/emacs/23.2.91/site-lisp/auctex/bib-cite hides /usr/share/emacs/site-lisp/auctex/bib-cite
/usr/local/share/emacs/23.2.91/site-lisp/auctex/toolbar-x hides /usr/share/emacs/site-lisp/auctex/toolbar-x
/usr/local/share/emacs/23.2.91/site-lisp/auctex/tex-style hides /usr/share/emacs/site-lisp/auctex/tex-style

Features:
(shadow sort mail-extr message sendmail 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 mailheader canlock sha1 hex-util
hashcash mail-utils emacsbug make-mode inform-mode tabify man log-edit
pcvs-util add-log grep compile pp diff-git diff-mode vc vc-dispatcher
autoconf autoconf-mode ediff-merg ediff-diff ediff-wind ediff-help
ediff-util ediff-mult ediff-init ediff cus-edit term disp-table ehelp
electric macros info vc-git vc-cvs python-21 python multi-isearch
help-mode view ansi-color shell jka-compr face-remap filladapt flyspell
completing-help recentf tree-widget wid-edit uniquify paren savehist
minibuf-eldef iswitchb icomplete whitespace autorevert time cus-start
cus-load desktop server php-mode etags cc-langs cc-mode cc-fonts
cc-menus cc-cmds cc-styles cc-align cc-engine cc-vars cc-defs speedbar
sb-image ezimage dframe lua-mode regexp-opt comint ring ropemacs pymacs
etags-update smart-quotes ispell auto-dictionary-autoloads
css-mode-autoloads dictionary-autoloads diff-git-autoloads
dired-isearch-autoloads full-ack-autoloads guess-style-autoloads
http-post-simple-autoloads js2-mode-autoloads magit-autoloads
mv-shell-autoloads ruby-mode-autoloads package reporter advice
advice-preload yasnippet help-fns derived edmacro kmacro easymenu assoc
cl cl-19 muse-autoloads emacs-goodies-el emacs-goodies-custom
emacs-goodies-loaddefs easy-mmode bbdb-autoloads preview-latex tex-site
auto-loads 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)

-- 
http://rrt.sc3d.org/