[XeTeX] Correct LaTeX-logo – how?

Robert Spence spence at saar.de
Sun May 7 15:12:48 CEST 2006

Joanna, Jonathan,

When I tried to typeset the file xetex-sample2e.tex I got the  
following error message:

! Undefined control sequence.
\XeTeX ...flectbox {E}\else \XeTeXuseglyphmetrics
                                                   =1 \setbox 0=\hbox  
l.60 ...eTeX\ logo within \emph{emphasized} text.}
                                                    Comparing it with

A Spotlight search of my harddisk pointed me towards an email that  
Jonathan posted on the [OS X TeX] mailing list on 28 March 2006,  
which says:

 >In the current development version of XeTeX, which will be released  
as 0.991 when I >get enough time to put a new package together, there  
is a parameter >\XeTeXuseglyphmetrics you can set that causes the  
engine to use true glyph height and >depth metrics in these  
computations, instead of the font-wide ascent and descent. >(This is  
an optional setting, as there's a performance hit for using this, and  
for >simple running text it is often not needed.)

The XeTeX version I have is only 0.99b (which appears to be the  
latest one available to us mere mortals...) --- or is it possible to  
get version 0.991 already?

-- Robert Spence

On 07 May 2006, at 14:09 , Jonathan Kew wrote:

> On 7 May 2006, at 12:16 pm, Joanna Rycko wrote:
>> Hello one more time,
>> using XeLaTeX I wanted to typeset LaTeX or even TeX logo in my  
>> document. But when the text is written in sans serif font, the  
>> both logos are still in serif font.
> I think this means that you're loading a package of some kind that  
> overrides the original definitions of the logos, as they should  
> "just work" in a default XeLaTeX document.
> I'm attaching a copy of sample2e with fonts changed to Gill Sans;  
> typesetting this should give the logos in the same font as the  
> surrounding text. (It also includes a sample XeLaTeX logo.)
> Note that the kerns and vertical shifts in the logos really need to  
> be adjusted for different fonts; the best spacing depends on the  
> glyph shapes that are being put together. So although this sample  
> shows them working in accordance with the definitions, the  
> positioning of the small-caps "A" in LaTeX is not ideal.
> If you find that a particular package is redefining \TeX, etc., and  
> you want to preserve the original definition that doesn't mess with  
> the typeface, you might be able to do something like this in your  
> preamble:
> 	\let\originalTeX = \TeX
> 	\usepackage{some-package-that-redefines-TeX}
> 	\let\TeX = \originalTeX
> (And similarly for \LaTeX, of course.) And if you want to fine-tune  
> the glyph positioning, you'll need to find the original \TeX and  
> \LaTeX macros and make copies of them, changing the \kern, \raise,  
> etc dimensions until you're happy with the results for the  
> particular typefaces you're using.
> JK
> <xetex-sample2e.tex>
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