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Consider the following file test.tex

\documentclass[11pt]{report}

\usepackage[T1]{fontenc}
\usepackage[protrusion,expansion]{microtype} 

\begin{document}
\chapter{A new chapter}
Some actual testing text here. Let us make this long enough so that it
will run over at least one line so I can test to see if protrusion is
the problem. Ha Ha Ha.!!
\end{document}

If I process it with pdflatex, the file generates just fine. If I try to process it with pdflatex -output-format dvi, it fails with

kpathsea: Running mktextfm ecrm1095+20
mktextfm: Running mf-nowin -progname=mf \mode:=ljfour; mag:=1; nonstopmode; input ecrm1095+20
This is METAFONT, Version 2.718281 (Web2C 2009)


kpathsea: Running mktexmf ecrm1095+20
! I can't find file `ecrm1095+20'.
<*> ...our; mag:=1; nonstopmode; input ecrm1095+20

Please type another input file name
! Emergency stop.
<*> ...our; mag:=1; nonstopmode; input ecrm1095+20

Transcript written on mfput.log.
grep: ecrm1095+20.log: No such file or directory
mktextfm: `mf-nowin -progname=mf \mode:=ljfour; mag:=1; nonstopmode; input ecrm1095+20' failed to make ecrm1095+20.tfm.
kpathsea: Appending font creation commands to missfont.log.

! Font csnameendcsname=ecrm1095+20 at 10.95pt not loadable: Metric (TFM) file n
ot found.

If I set the option expansion=false to microtype, the DVI output compiles just fine.

Questions:

(a) Is this normal, and is there a good explanation why DVI output breaks while PDF output works? (b) Can this be fixed? or is font expansion something I just shouldn't play with in DVI output?

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2 Answers 2

up vote 5 down vote accepted

pdftex is capable of producing both pdf and dvi output. But font expansion is a feature that belongs to solely pdf and therefore is not (immediately) available in dvi. See section 3.5 of the microtype manual.

According to that same manual microtype should be able to realize it's used in a dvi context, or maybe it does depend on on the DVIoutput switch or \pdfoutput=0 command. Either way, you're not going to get the full capacity of microtype in dvi.

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Ah. somehow I missed that part of the manual. Thanks. –  Willie Wong Oct 10 '10 at 19:46

From page 27 of the microtype documentation:

[A]utomatic font expansion only works when running pdfTeX in PDF mode. Although expansion is also possible in DVI mode, it requires that all instances of the expanded fonts exist on your TeX system.

So (a) this is the expected default behaviour with DVI and (b) fixing it is possible, but probably not worth the trouble.

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