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From: TeX on Mac OS X Mailing List
Subject: MacOSX-TeX Digest #1469 - 08/19/05
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FILETIME=[16736080:01C5A51A]
MacOSX-TeX Digest #1469 - Friday, August 19, 2005
Fwd: [XeTeX] A bug in (Xe)LaTeX?
by "Bruno Voisin"
Re: [OS X TeX] Two BibDesk/bibtex questions
by "Peter Dyballa"
----------------------------------------------------------------------
Subject: Fwd: [XeTeX] A bug in (Xe)LaTeX?
From: "Bruno Voisin"
Date: Fri, 19 Aug 2005 12:38:06 +0200
Le 18 ao=FBt 05 =E0 23:46, Peter Dyballa a =E9crit :
> Am 18.08.2005 um 22:46 schrieb Bruno Voisin:
>
>> That probably won't help, but who knows?
>
> No! The \null in the right place makes things work! (I should =20
> remember this \null a few times before I die!!)
I have tried many things this morning, even ending up replacing as =20
many LaTeX commands as possible with their plain TeX equivalent, to =20
no avail. I don't think the \null thing is actually the solution: the =20=
problem lies in the font themselves.
If you comment out the code
> \voffset=3D-1truein \hoffset=3D-1truein
> \ifpdf
> \pdfpageheight=3D\latexitheight
> \pdfpagewidth=3D\latexitwidth
> \else
> \special{papersize=3D\latexitheight,\latexitwidth}%
> \fi
then set in the preamble
\setlength{\fboxsep}{0pt}
and put the formula in an \fbox by replacing
> \shipout\vbox{\scalebox{\latexitscalefactor}{\usebox=20
> {\latexitbox}}}
with
\shipout\vbox{\fbox{\scalebox{\latexitscalefactor}{\usebox=20
{\latexitbox}}}}
then you'll realize that, for LaTeX, the formula box is actually =20
slightly smaller than its content:
[stripped attachment, the OS X TeX list won't accept it]
(see how the frame is superposed on the glyphs themselves).
To understand this, you have to think about how (La)TeX measures =20
boxes: by adding up dimensions specified in the metrics files for the =20=
fonts. I think the problem we see is just a manifestation of the way =20
the metrics of the Computer Modern fonts are set. For, if these fonts =20=
are replaced by the Lucida Bright/New Math fonts, then it seems the =20
problem disappears:
[stripped attachment, the OS X TeX list won't accept it]
(see how the frame lies exactly outside the glyphs).
Thus it seems there's no easy cure for the CM fonts, other than a =20
rule of thumb consisting in adding some empirically determined length =20=
to the box dimensions determined by (La)TeX. Has anybody had a look =20
at the source code for OOoLaTeXEquation, to see if the same problem =20
has been tackled, and how?
A couple more remarks on your code:
- To set the following right:
> \immediate\write\foo{\the\latexitheight (Height)}
> \immediate\write\foo{\the\latexitheight (TotalHeight)}
I think you should define a new length \latexittotalheight:
\newlength{\latexittotalheight}
then replace
> \addtolength{\latexitheight}{\latexitdepth}
with
\setlength{\latexittotalheight}{\latexitheight}
\addtolength{\latexittotalheight}{\latexitdepth}
and replace
> \immediate\write\foo{\the\latexitheight (TotalHeight)}
with
\immediate\write\foo{\the\latexittotalheight (TotalHeight)}
- In order to avoid an overfull hbox message, I think you should replace
> \shipout\vbox{\scalebox{\latexitscalefactor}{\usebox=20
> {\latexitbox}}}
with
\shipout\vbox{\makebox[0pt][l]{\scalebox{\latexitscalefactor}=20
{\usebox{\latexitbox}}}}
- The proposed code for dvips doesn't work:
> \special{papersize=3D\latexitheight,\latexitwidth}%
in that (i) you must interchange width and height, (ii) you must =20
preface them with \the and (iii) it must occur inside the shipped out =20=
\vbox to be taken into account. All in all, I think you should =20
replace the code between \begin{document} and \end{document}:
> \begin{document}
> {\voffset=3D-1truein \hoffset=3D-1truein
> \ifpdf
> \pdfpageheight=3D\latexitheight
> \pdfpagewidth=3D\latexitwidth
> \else
> \special{papersize=3D\latexitheight,\latexitwidth}%
> \fi
> \shipout\vbox{\scalebox{\latexitscalefactor}{\usebox=20
> {\latexitbox}}}%
> }%
> \end{document}
with
\begin{document}
\hoffset=3D-1in
\voffset=3D-1in
\ifpdf
\pdfpageheight=3D\latexittotalheight
\pdfpagewidth=3D\latexitwidth
\shipout\vbox{%
\makebox[0pt][l]{\scalebox{\latexitscalefactor}{\usebox=20
{\latexitbox}}}}
\else
\shipout\vbox{\special{papersize=3D\the\latexitwidth,\the=20
\latexittotalheight}%
\makebox[0pt][l]{\scalebox{\latexitscalefactor}{\usebox=20
{\latexitbox}}}}
\fi
\end{document}
Hope this helps,
Bruno=
----------------------------------------------------------------------
Subject: Re: [OS X TeX] Two BibDesk/bibtex questions
From: "Peter Dyballa"
Date: Fri, 19 Aug 2005 16:59:35 +0200
Am 18.08.2005 um 20:38 schrieb Fernando Pereira:
> To avoid breaking other things, eg. bib2html, the "~" has to be
> escaped.
URLs can use %7E instead of ~ -- how would this 'escape code' do?
--
Greetings
Pete
A common mistake that people make when trying to design something
completely foolproof is to underestimate the ingenuity of complete
fools.
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