[OS X TeX] A bit of everything (4/4)
Bruno Voisin
bvoisin at me.com
Tue Mar 22 22:15:52 CET 2011
European Modern
===============
European Modern was a set of commercial PostScript fonts from Y&Y, intermediate between the 7-bit Computer Modern and the Unicode Latin Modern: it was 8-bit, based on Computer Modern and contained pre-built accented characters for most European languages. In this sense, it may be seen as an outline version of the bitmap EC fonts, alternative to CM-Super and supposedly of better quality since it was prepared manually and hand-hinted. See
http://www.tug.org/yandy/options.htm
http://www.tug.org/yandy/em.htm
Since the open-sourcing of the Y&Y TeX system, European Modern may be found at
http://code.google.com/p/yytex/source/browse/trunk/fonts/em
Beware: if you download the EM fonts as part of a svn checkout of Y&Y TeX, using
svn checkout http://yytex.googlecode.com/svn/trunk/ yytex-read-only
then each folder and sub-folder of the checkout will contain an invisible .svn folder which may be of significant size. I couldn't understand first why some tfm folders, though containing only say 50 TFM files of 4 kB, were about 1 MB in size in the Finder, then I went to the Terminal and "ls -al" revealed it all. You can erase the invisible .svn folders in all the subdirectories of the current directory by typing
sudo find . -name .svn -exec rm -rf {} \;
sudo was needed in my case, though I don't know why. And the obvious "find . -name .svn -delete" didn't work, for some unknown reason either.
Back to topic: having looked at Lucida and MathTime already, it was only logical to look at this third and last Y&Y scalable font option for TeX. But I wasn't willing to spend any more time on TeX font issues, having had a large enough dose of TeX fonts for a whole lifetime. Then a few days ago Paolo Matteuci raised the issue twice, on the Textures mailing list and in an off-list message. He was quite persuasive, so I decided finally to have a look at European Modern, thinking this would be straightforward; again, I was wrong.
The original setups are described in the ReadMe files for Windows
http://code.google.com/p/yytex/source/browse/trunk/fonts/em/README.txt
and for the Mac
http://code.google.com/p/yytex/source/browse/trunk/fonts/em/macinto1.txt
http://code.google.com/p/yytex/source/browse/trunk/fonts/em/macinto2.txt
http://code.google.com/p/yytex/source/browse/trunk/fonts/em/manifest.txt
Based on the latter, it seems the Mac setup was distributed on 5 floppies, complete with metrics suitcases, screen fonts and printer fonts, plain TeX and LaTeX support files. These floppies are lost, but some remaining pieces are scattered in the Y&Y TeX repository. So the adaptation means essentially identifying what's relevant for TeX Live and fixing what needs to be fixed.
Fonts
-----
First come the fonts: get
http://code.google.com/p/yytex/source/browse/trunk/fonts/em/pfb
throw away the SRC files and keep the 70 PFB files. The accompanying AFM files live in
http://code.google.com/p/yytex/source/browse/trunk/fonts/em/afm
Metrics
-------
Second come the metrics. Four set of metrics are provided, corresponding to two different encodings for Windows:
- texnansi (aka LY1, aka 8y, aka TeX 'n ANSI), defined in <http://code.google.com/p/yytex/source/browse/trunk/fonts/vec/texnansi.vec>;
- tex256 (aka T1, aka 8t, aka Cork, aka EC or its precursor DC), defined in <http://code.google.com/p/yytex/source/browse/trunk/fonts/vec/tex256.vec>;
and two different encodings for the Mac:
- mac (aka Macintosh Standard Roman), defined in <http://code.google.com/p/yytex/source/browse/trunk/fonts/vec/mac.vec> and used in Textures < 1.6;
- texmac (aka LM1, aka LT1, aka Textures Macintosh), defined in <http://code.google.com/p/yytex/source/browse/trunk/fonts/vec/texmac.vec> and used in Textures >= 1.6.
It seems that the Y&Y TeX system for Windows performed on-the-fly re-encoding, storing both sets of metrics in parallel in encoding-dependent folders
c:\yandy\fonts\tfm\texansi\tfm-em
c:\yandy\fonts\tfm\tex256\tfm-em
c:\yandy\fonts\tfm\nontext\tfm-emmi
and picking one particular folder at typeset time depending on the selected encoding. Other than that, in each encoding-specific folder the metrics had exactly the same names, like emr10.tfm.
This is not the way things are in TeX Live: each metrics bears a different name depending on the encoding, such as ptmr8y.tfm (texnansi) and ptmr8t.tfm (tex256) for Times-Roman, and it is based on these names alone that an encoding is picked at typeset time. Hence for EM you cannot have several encodings installed simultaneously: you must choose one encoding once and for good at install time, and stick with it afterwards.
This is most inconvenient, since characters will remain unavailable depending on your choice: texnansi has diacritics but not all the pre-accented letters of Eastern European languages, whereas tex256 has all these accents but no diacritics. See
/Library/TeX/Root/texmf-dist/doc/latex/base/encguide.pdf
For Computer Modern and Latin Modern the latter has been alleviated by adding a supplementary encoding, called Text Companion (aka TS1, aka 8c) and containing all the diacritics. There is no such companion metrics for European Modern.
texmac is similar to texnansi in this respect: texnansi was designed to combine the 8-bit Windows ANSI encoding with the 7-bit TeX text encoding (aka OT1, aka 7t), and texmac was designed to combine the 8-bit Macintosh Standard Roman encoding with TeX text. So with texmac, as with texnansi, the Eastern European pre-accented letters are missing.
Moreover, in the tests I made it seems that some ligatures are also missing with texmac: for Lucida these were "<<" and ",,", here for European Modern it seems to be "``" for the typewriter fonts.
mac encoding, which has been superseded by texmac, is obsolete and irrelevant and may be discarded.
This leaves texnansi, tex256 and texmac to choose from. The following instructions consider all three and leave it to you to choose. What can only be said regarding texnansi vs texmac is that texnansi has prospered outside its Y&Y lineage, is widely used in the ConTeXt community and is actively supported on CTAN, see
http://www.ctan.org/tex-archive/fonts/psfonts/ly1/
whereas texmac is mostly forgotten and never made it outside the Textures community.
The metrics sets are reconstructed by combining the 13 math metrics at the first level of
http://code.google.com/p/yytex/source/browse/trunk/fonts/em/tfm
with the 57 text metrics inside, respectively,
http://code.google.com/p/yytex/source/browse/trunk/fonts/em/tfm/texnansi
http://code.google.com/p/yytex/source/browse/trunk/fonts/em/tfm/tex256
http://code.google.com/p/yytex/source/browse/trunk/fonts/em/texmac
In the first two, discard tir.tfm. In the last, discard the math fonts emmi*.tfm, they are all faulty.
Mapping and reencoding
----------------------
Third come map files and encoding files. Two encoding files texnansi.enc and tex256.enc are already included in TeX Live; texmac.enc is available at
http://code.google.com/p/yytex/source/browse/trunk/fonts/vec/texmac.enc
Three map files are provided at
http://code.google.com/p/yytex/source/browse/trunk/fonts/em/psfonts/psfonts.emm
http://code.google.com/p/yytex/source/browse/trunk/fonts/em/psfonts/psfonts.emt
http://code.google.com/p/yytex/source/browse/trunk/fonts/em/psfonts/psfonts.emy
for texmac, tex256 and texnansi, respectively. In each, comment out the lines for the Computer Modern math fonts (cmsy5 ff.), since TeX Live already contains them and is configured for them.
(La)TeX support files
---------------------
Fourth come the plain TeX and LaTeX support files. These are spread between
http://code.google.com/p/yytex/source/browse/trunk/fonts/em/latex2e
http://code.google.com/p/yytex/source/browse/trunk/fonts/em/plain
http://code.google.com/p/yytex/source/browse/trunk/fonts/em/tex
and similarly there are test and sample files spread between
http://code.google.com/p/yytex/source/browse/trunk/fonts/em/latex2e
http://code.google.com/p/yytex/source/browse/trunk/fonts/em/test
http://code.google.com/p/yytex/source/browse/trunk/fonts/em/tex
The plain TeX macro file is
http://code.google.com/p/yytex/source/browse/trunk/fonts/em/plain/emplain.tex
It must be supplemented for tex256 encoding by
http://code.google.com/p/yytex/source/browse/trunk/tex/dcaccent.tex
and for texnansi encoding by texnansi.tex which is already in TeX Live. There is also a
http://code.google.com/p/yytex/source/browse/trunk/tex/macaccen.tex
but close inspection reveals that it is for mac encoding, not texmac, and that for texmac no additional file is required.
Some preliminary editing of dcaccent.tex is required, though. Add at line 46
\chardef\atcode=\catcode`\@ % save catcode of atsign
\catcode`\@=11 % make atsign `letter'
at line 502
\catcode`\@=\atcode % restore original catcode of atsign
and replace #1 by ##1 in lines 429-433, yielding
\def\b##1{\oalign{##1\crcr\hidewidth
\vbox to.2ex{\hbox{\char9}\vss}\hidewidth}}%
\def\c##1{\setbox0\hbox{##1}\ifdim\ht0=1ex\accent11 ##1
\else{\ooalign{\hidewidth\char11\hidewidth\crcr\unhbox0}}\fi}%
}
Then, to use EM fonts in plain TeX, for LY1 encoding (ie texnansi) you'll write
\input emplain
\input texnansi
for T1 encoding (ie tex256) you'll write
\input emplain
\input dcaccent
and for LM1 (ie texmac) encoding you'll write
\input emplain
The LaTeX dedicated package is
http://code.google.com/p/yytex/source/browse/trunk/fonts/em/latex2e/em.sty
It must be supplemented for texmac encoding by a file lm1enc.def which is missing. I quickly hacked one by taking lt1enc.def from the textures-psfonts package by Vincent Jalby on the Textures 2.1 CD, renaming it to lm1enc.def and replacing
\DeclareFontShape{LT1}{cmr}{m}{n}{<-> Times}{}
by
\DeclareFontShape{LM1}{cmr}{m}{n}{
<-6> emr5
<6-7> emr6
<7-8> emr7
<8-9> emr8
<9-10> emr9
<10-12> emr10
<12-17> emr12
<17-> emr17
}{}
The test files
http://code.google.com/p/yytex/source/browse/trunk/fonts/em/latex2e/testem.tex
http://code.google.com/p/yytex/source/browse/trunk/fonts/em/test/test_l2e.tex
contain a line
\usepackage{emgreek} % needed for upright uppercase Greek
pointing to a package emgreek.sty which seems to correspond to the file
http://code.google.com/p/yytex/source/browse/trunk/fonts/em/tex/emgreek.tex
However, this file does more harm than good: it makes exactly the opposite of what it's supposed to, namely the upright uppercase Greek characters disappear. Hence throw away emgreek.tex/sty, and comment out the lines calling it.
Then, to use EM in LaTeX, for LY1 encoding use
\usepackage[LY1]{fontenc}
\usepackage{em}
for T1 encoding use
\usepackage[T1]{fontenc}
\usepackage{em}
and for LM1 encoding use
\usepackage[LM1]{fontenc}
\usepackage{em}
Another problem arises though: when a char size option other than the default [10pt] is chosen together with T1 encoding, for example by writing
\documentstyle[11pt]{article}
\usepackage[T1]{fontenc}
\usepackage{em}
then the EM fonts are superseded by EC in the output and the CM-Super fonts are used instead (sfrm1095.pfb instead of emr10.pfb here). It seems that, in this case, the definition of T1/cmr from t1cmr.fd built into the LaTeX format, namely
\providecommand{\EC at family}[5]{%
\DeclareFontShape{#1}{#2}{#3}{#4}%
{<5><6><7><8><9><10><10.95><12><14.4>%
<17.28><20.74><24.88><29.86><35.83>genb*#5}{}}
\DeclareFontFamily{T1}{cmr}{}
\EC at family{T1}{cmr}{m}{n}{ecrm}
takes precedence over its redefinition in em.sty, namely
\DeclareFontFamily{T1}{cmr}{}
\DeclareFontShape{T1}{cmr}{m}{n}{
<-6> emr5
<6-7> emr6
<7-8> emr7
<8-9> emr8
<9-10> emr9
<10-12> emr10
<12-17> emr12
<17-> emr17
}{}
To solve this, use instead
\usepackage[LY1]{fontenc}
\usepackage[T1]{em}
I'd have a hard time explaining why it works, but it does!
Installation
------------
Attached is an archive of a full European Modern setup for TeX Live, save the PFB font files for size considerations. These can be easily downloaded from the URL given in the first step above. You only have to choose one encoding, remove the TFM files for the other encodings and enable the map file for this encoding.
Namely, assuming a system-wide setup and an installation in /Library/TeX/Local, what you have to do for texnansi encoding is
sudo rm -r /Library/TeX/Local/fonts/tfm/yandy/em-tex256
sudo rm -r /Library/TeX/Local/fonts/tfm/yandy/em-texmac
sudo mktexlsr
sudo updmap-sys -H --enable Map psfonts.emy
for tex256 encoding
sudo rm -r /Library/TeX/Local/fonts/tfm/yandy/em-texmac
sudo rm -r /Library/TeX/Local/fonts/tfm/yandy/em-texnansi
sudo mktexlsr
sudo updmap-sys -H --enable Map psfonts.emt
and for texmac encoding
sudo rm -r /Library/TeX/Local/fonts/tfm/yandy/em-tex256
sudo rm -r /Library/TeX/Local/fonts/tfm/yandy/em-texnansi
sudo mktexlsr
sudo updmap-sys -H --enable Map psfonts.emm
For a user-specific setup in ~/Library/texmf replace the above by
rm -r ~/Library/texmf/fonts/tfm/yandy/em-tex256
rm -r ~/Library/texmf/fonts/tfm/yandy/em-texmac
updmap --enable Map psfonts.emy
for texnansi encoding, and similarly for the other encodings.
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Y&Y
===
Finally, in several occasions in this series or the companion series for Textures, files have been mentioned related to plain TeX support by Y&Y.
My first contact with these files came with Lucida fonts, licensed from Y&Y and sold by Blue Sky Research. The LucidaBright #2 floppy contained
fonttest.tex
stanacce.tex
texnansi.tex
the Lucida Expert Bright floppy contained
macacce.tex
stanacce.tex
and the file lcdplain.tex in these floppies contained three mysterious lines at the end
% \input texnansi.tex if you are using `TeX n ANSI' encoding
% \input ansiacce.tex if you are using Windows ANSI encoding
% \input stanacce.tex if you are using Adobe StandardEncoding
At the time I could not understand what this was about: the lines mentioned a file which wasn't there (ansiacce.tex), they did not mention one which was (macacce.tex), and obviously none of these files was of any use to Textures anyway.
This became more mysterious with gwTeX, based on teTeX, whose early versions had a MathTime support directory containing
ansiacce.tex
dcaccent.tex
stanacce.tex
texnansi.tex
In this support directory there were also files mtplain.tex and mtplainx.tex containing the three same mysterious lines at the end plus four other mysterious lines next to the beginning
\input encode % Read user encoding customizations:
% use encodetx.tex for TeX 'n ANSI
% use encodean.tex for Windows ANSI
% use encodese.tex for Adobe StandardEncoding
and the additional files so mentioned,
encodean.tex
encodese.tex
encodetx.tex
contained the even more mysterious lines
% The following is for Adobe StandardEncoding (also \input stanacce.tex)
% The following is for Windows ANSI (also \input ansiacce.tex)
% The following is for TeX n ANSI (also \input texnansi.tex)
% The following is for `DC' encoding (Cork Ireland TUG meeting 1990) [...] (also \input dcaccent.tex)
% Following is for Macintosh `standard roman encoding' (\input macaccen.tex)
Only now, having done all those adaptations and inspected the Y&Y TeX Google code repository, am I now finally starting to make sense of this.
Here is a sketch table recapitulating, for each encoding, the associated VEC, ENC and plain TeX support files from the Y&Y TeX Google code repository:
Adobe Standard standard.vec standard.enc stanacce.tex 8a
Windows ANSI ansinew.vec ansinew.enc ansiacce.tex
TeX n ANSI texnansi.vec texnansi.enc texnansi.tex 8y, LY1
Cork tex256.vec tex256.enc dcaccent.tex 8t, T1, EC
Macintosh Standard Roman mac.vec macaccen.tex
Textures Macintosh texmac.vec texmac.enc LM1, LT1
Textures Typewriter Macintosh texmax.vec LM2
Following is an archive containing these plain TeX support files, in their latest versions corrected for EM, plus fonttest.tex for drawing glyph charts and plainmin.tex mentioned in mtplain.tex, together with the ENC files, minus those files which are already included in TeX Live and plus texmax.enc (see the second message in this series). It's likely what's already in TeX Live is amply sufficient, but in this way all the files referenced in the plain TeX macro files from Y&Y for Lucida, MathTime and EM are put together in one place.
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