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bug#8530: 23.2; Button 'mouse-face property loses Bold and Italic proper

From: PJ Weisberg
Subject: bug#8530: 23.2; Button 'mouse-face property loses Bold and Italic properties
Date: Wed, 20 Apr 2011 21:28:39 -0700

(defun buggy-button()
  (insert-text-button "MyButton"
                      'face 'font-lock-function-name-face
                      'mouse-face 'font-lock-warning-face))

Evaluate that, then call buggy-button to insert a button.

font-lock-function-name-face is blue
font-lock-warning-face is red/bold

The button that was inserted has a blue face, but when you hold the
mouse over it it turns red, but not bold.

The manual says that mouse-face is "merged with the usual button face",
so I expected this:

(defun buggy-button()
  (insert-text-button "MyButton"
                      'face 'font-lock-function-name-face
                      'mouse-face 'bold-italic))

To result in a button that is blue, bold, and italic when the mouse is
over it.  Instead, I get a button that goes back to the default face
when the mouse is over it.

In GNU Emacs 23.2.1 (i486-pc-linux-gnu, X toolkit, Xaw3d scroll bars)
 of 2010-12-11 on raven, modified by Debian
Windowing system distributor `The X.Org Foundation', version 11.0.10905000
configured using `configure  '--build' 'i486-linux-gnu' '--build'
'i486-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-x=yes' '--with-x-toolkit=lucid' '--with-toolkit-scroll-bars'
'--without-gconf' 'build_alias=i486-linux-gnu' 'CFLAGS=-DDEBIAN -g

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_US.UTF-8
  value of $XMODIFIERS: nil
  locale-coding-system: utf-8-unix
  default enable-multibyte-characters: t

Major mode: Text

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-encryption-mode: t
  auto-compression-mode: t
  line-number-mode: t
  transient-mark-mode: t

Recent input:
<return> <return> <return> <help-echo> <down-mouse-1>
<mouse-1> <help-echo> <down-mouse-5> <mouse-5> <down-mouse-5>
<mouse-5> <double-down-mouse-5> <double-mouse-5> <down-mouse-5>
<mouse-5> <down-mouse-5> <mouse-5> <down-mouse-5> <mouse-5>
<down-mouse-5> <mouse-5> <down-mouse-5> <mouse-5> <help-echo>
<down-mouse-5> <mouse-5> <double-down-mouse-5> <double-mouse-5>
<down-mouse-5> <mouse-5> <double-down-mouse-5> <double-mouse-5>
<down-mouse-5> <mouse-5> <down-mouse-5> <mouse-5> <down-mouse-5>
<mouse-5> <down-mouse-5> <mouse-5> <double-down-mouse-5>
<double-mouse-5> <down-mouse-5> <mouse-5> <down-mouse-5>
<mouse-5> <down-mouse-5> <mouse-5> <help-echo> <down-mouse-1>
<mouse-1> C-k C-k C-k C-k C-k C-k c u s t o m - v a
r i a b l e - b u t t o n ) ) C-x C-e <return> <return>
M-x b u g g y <return> <return> <return> <help-echo>
<up> <up> C-k <backspace> <backspace> <help-echo> <down-mouse-5>
<mouse-5> <down-mouse-5> <mouse-5> <down-mouse-5> <mouse-5>
<double-down-mouse-5> <double-mouse-5> <down-mouse-5>
<mouse-5> <double-down-mouse-5> <double-mouse-5> <down-mouse-5>
<mouse-5> <down-mouse-5> <mouse-5> <down-mouse-1> <mouse-1>
<next> <down> <down> <down> <down> <down> <down> <left>
<left> <return> <return> <right> <right> <down> <down>
<up> <left> <up> <left> <return> <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> <up> <up> <up>
<up> <up> <up> <up> <up> <up> <up> <down> <left> <return>
<down> <down> <down> <down> <down> <down> <down> <down>
<down> <down> <down> <next> <down> <down> <down> <down>
<down> <down> <down> <down> <down> <left> <left> <return>
<down> <down> <down> <down> <down> <down> <down> <down>
<down> <down> <down> <down> <down> <down> C-x o <left>
<left> <backspace> <backspace> <backspace> <backspace>
<backspace> <backspace> <backspace> <backspace> <backspace>
<backspace> <backspace> <backspace> <backspace> <backspace>
<backspace> <backspace> <backspace> <backspace> <backspace>
<backspace> <backspace> <backspace> f o n t - l o c
k - w a r n i n g - f a c e C-e C-x C-e <return> <return>
M-x b u g g y <return> <return> <return> <help-echo>
<help-echo> <help-echo> M-x r e p o r t SPC e m a c
s SPC b u g <return>

Recent messages:
Making completion list...
Mark set
buggy [2 times]
Creating face editor...done
Creating face editor...done
Creating face editor...done

Load-path shadows:
/usr/share/emacs/23.2/site-lisp/debian-startup hides
/usr/share/emacs/23.2/site-lisp/html-helper-mode/tempo hides
/usr/share/emacs/23.2/site-lisp/dictionaries-common/flyspell hides
/usr/share/emacs/23.2/site-lisp/dictionaries-common/ispell hides
/usr/share/emacs/23.2/site-lisp/css-mode/css-mode hides

(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 mailheader canlock sha1
hex-util hashcash mail-utils emacsbug pp debug multi-isearch help-mode
view help-fns crm thingatpt cus-edit easymenu cus-start cus-load
wid-edit 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 font-render-setting x-toolkit x
multi-tty emacs)


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