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bug#15514: 24.3.50; Re: Issue with fonts on macosx

From: Markus Pahlow
Subject: bug#15514: 24.3.50; Re: Issue with fonts on macosx
Date: Wed, 2 Oct 2013 08:56:09 +0200

After the Mac port font backend was ported to the trunk, there appeared a new 
display problem with LaTeX files on macosx.  When I open a file in latex
mode and enter $x_0^0$, both 0s are shown in superscript position, whereasthe 
first 0 should be in subscript position.  Also, when using AUCTeX, all
the section, subsection, etc. arguments are shown in subscript position.  A 
recipe to reproduce the problem from emacs -Q: open a file "test.tex" and enter 
When I comment out these lines (starting on line 1178) in nsfns.m:
if (CTGetCoreTextVersion !=3D NULL
     && CTGetCoreTextVersion () >=3D kCTVersionNumber10_5)
   mac_register_font_driver (f);
and recompile, the LaTeX code is displayed correctly again.  Can you reproduce 
this problem?  I use clang version 500.2.75 from xcode 5 and osx 10.8.5.  I 
don't know what the above code does, but I hope it helps finding the cause of 
the problem.
I was advised by Jan Djärv that setting the font-backend frame parameter to 
"ns" also corrects the display problem.
Many thanks.

In GNU Emacs (i386-apple-darwin12.5.0, NS apple-appkit-1187.39)
of 2013-09-25 on hui.geomar.de
Windowing system distributor `Apple', version 10.3.1187
Configured using:
`configure --with-ns CFLAGS=3D-O4 CC=3Dclang 'CPP=3Dclang -E''

Important settings:
  value of $LC_CTYPE: en_GB.UTF-8
  value of $LANG: en_GB.UTF-8
  locale-coding-system: utf-8-unix
  default enable-multibyte-characters: t

Major mode: Lisp Interaction

Minor modes in effect:
  TeX-PDF-mode: t
  TeX-source-correlate-mode: t
  smartparens-global-mode: t
  smartparens-mode: t
  global-rainbow-delimiters-mode: t
  rainbow-delimiters-mode: t
  tabbar-mwheel-mode: t
  tabbar-mode: t
  shell-dirtrack-mode: t
  show-paren-mode: t
  recentf-mode: t
  global-hl-line-mode: t
  global-auto-revert-mode: t
  delete-selection-mode: t
  diff-auto-refine-mode: t
  savehist-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
  auto-composition-mode: t
  auto-encryption-mode: t
  auto-compression-mode: t
  column-number-mode: t
  line-number-mode: t
  global-visual-line-mode: t
  visual-line-mode: t
  transient-mark-mode: t

Recent input:
<escape> x r e p o <tab> r <tab> <return>

Recent messages:
Loading delsel...done
Loading autorevert...done
Loading hl-line...done
Loading recentf...done
Loading paren...done
Loading /Users/mpahlow/.emacs.d/recentf...done
Cleaning up the recentf list...done (0 removed)
Loading /Users/mpahlow/.emacs.d/custom.el (source)...done
For information about GNU Emacs and the GNU system, type C-h C-a.
Making completion list...

Load-path shadows:
/Users/mpahlow/.emacs.d/elpa/gnuplot-20130207.101/gnuplot hides /usr/local/=
/Users/mpahlow/.emacs.d/elpa/gnuplot-20130207.101/gnuplot-gui hides /usr/lo=
~/.emacs.d/el-get/el-get/.dir-locals hides /usr/local/src/emacs/nextstep/Em=

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