Package: dvipng
Version: 1.5-2
Severity: normal

*** Please type your report below this line ***

After compiling the following file with latex and the result with 
dvipng, the preview of the dvi file and the png file visibly 
differs: in the png file the minus, ellipses and greater than signs 
are replaced with totally different symbols.  I would expect that 
one cannot see any difference between the previews (unless largely 
zoomed).

Minimal test file test.tex:

\documentclass[a4paper,12pt]{article}
\usepackage{txfonts}

\begin{document}
\[
b \coloneqq a \geq 1 - 2 - \cdots - n.
\]
\end{document}

I have run this through latex and dvipng as follows:

[EMAIL PROTECTED] ~/tmp/dvipng$ latex test
This is e-TeX, Version 3.14159-2.1 (Web2C 7.4.5)
entering extended mode
(./test.tex
LaTeX2e <2001/06/01>
Babel <v3.7h> and hyphenation patterns for american, german, 
ngerman, magyar, n
ohyphenation, loaded.
(/usr/share/texmf/tex/latex/base/article.cls
Document Class: article 2001/04/21 v1.4e Standard LaTeX document 
class
(/usr/share/texmf/tex/latex/base/size12.clo))
(/usr/share/texmf/tex/latex/txfonts/txfonts.sty) (./test.aux)
(/usr/share/texmf/tex/latex/txfonts/omltxmi.fd)
(/usr/share/texmf/tex/latex/txfonts/omstxsy.fd)
(/usr/share/texmf/tex/latex/txfonts/omxtxex.fd)
(/usr/share/texmf/tex/latex/txfonts/utxexa.fd)
(/usr/share/texmf/tex/latex/txfonts/ot1txr.fd)
(/usr/share/texmf/tex/latex/txfonts/utxmia.fd)
(/usr/share/texmf/tex/latex/txfonts/utxsya.fd)
(/usr/share/texmf/tex/latex/txfonts/utxsyb.fd)
(/usr/share/texmf/tex/latex/txfonts/utxsyc.fd) [1] (./test.aux) )
Output written on test.dvi (1 page, 384 bytes).
Transcript written on test.log.
[EMAIL PROTECTED] ~/tmp/dvipng$ dvipng test
This is dvipng 1.5 Copyright 2002-2005 Jan-Ĺke Larsson
[1]

Output files test.dvi and test1.png are attached.

Replacing \coloneqq with = in test.tex, the output of dvipng is correct. 
It is also correct if we keep \coloneqq but write a - before b in 
the formula.

Best wishes,

 Gabor

-- System Information:
Debian Release: 3.1
  APT prefers testing
  APT policy: (650, 'testing'), (600, 'unstable')
Architecture: i386 (i686)
Kernel: Linux 2.6.9.20041228
Locale: LANG=hu_HU.iso88592, LC_CTYPE=hu_HU.iso88592 (charmap=ISO-8859-2) 
(ignored: LC_ALL set to hu_HU.iso88592)

Versions of packages dvipng depends on:
ii  libc6                  2.3.2.ds1-22      GNU C Library: Shared libraries an
ii  libfreetype6           2.1.7-2.4         FreeType 2 font engine, shared lib
ii  libgd2-xpm             2.0.33-1.1        GD Graphics Library version 2
ii  libkpathsea3           2.0.2-30          path search library for teTeX (run
ii  libpng12-0             1.2.8rel-1        PNG library - runtime
ii  libt1-5                5.0.2-3           Type 1 font rasterizer library - r
ii  zlib1g                 1:1.2.2-4.sarge.2 compression library - runtime

-- no debconf information

Attachment: test.dvi
Description: TeX dvi file

Attachment: test1.png
Description: PNG image

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