[OS X TeX] Extremely weird bug in: dvips? ghostscript? lucida fonts?
Bruno Voisin
bvoisin at mac.com
Fri Apr 2 10:14:28 EST 2004
After days learning the intricacies of hyperref, I am now facing an
extremely weird bug of a different sort. A reduction is the following
input file:
--------------------------------------
\documentclass[12pt,a4paper]{report}
\usepackage[applemac]{inputenc}
\usepackage[T1]{fontenc}
\usepackage{lucidabr}
\renewcommand{\familydefault}{\sfdefault}
\DeclareFixedFont{\subtitlefont} {T1}{hls}{m} {it}{24}
\begin{document}
{\subtitlefont Principe et spécifications}
\bigskip
L'\emph{information} est \emph{gérée de façon incohérente}.
En assurer la \emph{cohérence graphique}.
En assurer la \emph{cohérence informatique}.
Le transformer en un moyen de \emph{gérer l'information}.
\end{document}
--------------------------------------
This file uses Lucida Sans in upright and italic shapes. With pdfTeX
everything typesets OK, but with dvips + ps2pdf it seems that every
italic word containing the letter "é" triggers, for this word only, the
use of a Type 3 version of the Lucida font.
The jagged (ie bitmapped) appearance of the Type 3 font is easily seen
in TeXShop, and also visible in Acrobat if you increase the
magnification. The Type 3 font is revealed by Acrobat as T3Font_0.
What's most surprising is that I cannot see this font anywhere in the
PS file created during the DVI -> PS -> PDF conversion.
This does not happen if the Lucida Sans Italic font is not called first
as a fixed size font of larger size (line starting with
{\subtitlefont), or if in the following line (starting with
L'\emph{information}) the italic shape is called only once (through
\emph{}) instead of twice.
I'm really at a loss for understanding what's happening. I would think
a GhostScript bug, all the more since using the Panther Distiller
instead of ps2pdf13 suppresses the problem. Or maybe an indirect
consequence of a malformed Lucida font?
Is anybody with Lucida fonts able to reproduce this bug? Has any hints
on a diagnosis?
The .tex, .ps and .pdf files are available for public inspection by
anonymous ftp from <ftp://ftp.legi.hmg.inpg.fr/pub/public/voisin/>, as
bugsearch.tex etc.
A confused Bruno Voisin
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