When using an italic font (tested with lucida grande fontset, variable-width), glyphs overwrite parts of previous glyphs. It looks like single glyphs are shown on the screen with a white background color, on top of the previous text. Upon redisplay, everything looks good, which means that this only occurs after typing text as opposed to pasting, or making it italic after typing.

The attached screenshot shows the effect: look for the letter 'h'.


PNG image


I could not reproduce the problem with an X11 Emacs on GNU/Linux.
It does occur with a Carbon Emacs, though.




In GNU Emacs 22.0.50.4 (powerpc-apple-darwin8.2.0)
of 2005-07-19 on lucy - Aquamacs Distribution 0.9.5 beta-1 - Aquamacs Distribution 0.9.5 beta-1
Distributor `Apple Computers', version 10.4.2
configured using `configure '--without-x' '--prefix=/usr/local''

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: nil
  locale-coding-system: iso-latin-1
  default-enable-multibyte-characters: t

Major mode: Outline

Minor modes in effect:
  smart-frame-positioning-mode: t
  longlines-mode: t
  recentf-mode: t
  osx-key-mode: t
  mouse-wheel-mode: t
  show-paren-mode: t
  delete-selection-mode: t
  pc-selection-mode: t
  cua-mode: t
  encoded-kbd-mode: t
  tooltip-mode: t
  auto-compression-mode: t
  use-hard-newlines: t
  menu-bar-mode: t
  global-font-lock-mode: t
  unify-8859-on-encoding-mode: t
  utf-translate-cjk-mode: t
  column-number-mode: t
  line-number-mode: t
  transient-mark-mode: t
  next-error-follow-minor-mode:  Fol

Recent input:
<return> M-o t h e SPC <backspace> <backspace> <backspace>
M-o i M-o i t h e SPC s h e e p SPC t h a t ' s SPC
r e d M-o i SPC a s SPC o p p o s e d SPC t o SPC <backspace>
<backspace> <backspace> <backspace> <backspace> <backspace>
<backspace> <backspace> <backspace> <backspace> <backspace>
<backspace> <backspace> <backspace> <escape> o d a
s SPC o p p o s e d SPC t o SPC <escape> o i t h e
SPC r e d SPC s h e e p <menu-bar> <help-menu> <re
port-emacs-bug>

Recent messages:
Longlines Mode enabled in Text modes
Longlines Mode disabled in Text modes
Auto Fill disabled in Text modes
Auto Fill enabled in Text modes
Longlines Mode enabled in Text modes
Making completion list... [3 times]
Auto-saving...done
Auto-saving...done
Font-lock mode will override any faces you set in this buffer
Font-Lock mode disabled

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