[XeTeX] fontspec & math(s)

[Bruno Voisin]

Le 18 nov. 04, à 09:46, Bruno Voisin a écrit :

> Le 18 nov. 04, à 05:54, Will Robertson a écrit :
>
>> However, I get the wrong symbols when using \{ \}, so I must be 
>> messing something up somewhere, and I haven't had time to work out 
>> what's going wrong. Any suggestions?
>
> I think your problem is an encoding issue: the math fonts in TeX are 
> assumed to have special encodings OML, OMS, OMX and even OT1. [...] 
> This may mess up some character declarations, regarding in particular 
> \{ and \}, equivalent to \lbrace and \rbrace in math mode, and 
> \textbraceleft and \textbraceright in text mode.

I forgot to add that I don't experience your problem:

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wher the brackets are taken from Lucida NewMath. It's possible you get 
the problem for the text-size braces { and } only, got with \{ and \}, 
and not for the extensible characters above, got from \left\{ and 
\tight\} (actually \biggl\{ and \biggr\} here), since I think they are 
taken from different fonts.

I just made a quick test, from the input "$\{$ and \{, and also $\}$ 
and \}". Loading first Lucida fonts in T1 encoding, then Hoefler on top 
of it, I get:

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Loading first CM/AMS fonts with the default settings (hence OT1 
encoding), then Hoefler on top of it, I get:

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It's obvious in both cases the two braces, obtained through $\{$ and 
\{, are different, the first one yielding the math font (LMSY or CMSY) 
and the second one yielding the text font (Hoefler Text). However in 
both cases the final symbol is right. Possibly in your case the problem 
is caused by the Euler fonts?

Bruno (off to real-life work now)