[OS X TeX] Fine point of mathematical typing?

[Bruno Voisin]

Le 12 mai 08 à 23:12, Ross Moore a écrit :

> (The '1' being narrower than other digits makes a tiny difference;
> but hardly noticeable at all.)

In order to alleviate for this, and use the Monospaced "option" of  
OpenType fonts, I tried, with Roberto's example, to replace pdfLaTeX  
by XeLaTeX and adding in the preamble:

\DeclareFontFamily{U}{monolmr}{}
\DeclareFontShape{U}{monolmr}{m}{n}
   {<-> "LMRoman12\space Regular:
         Number\space Spacing=Monospaced\space Numbers"}{}
\DeclareSymbolFont{mononumbers}{U}{monolmr}{m}{n}
\DeclareMathSymbol{0}{\mathalpha}{mononumbers}{`0}
\DeclareMathSymbol{1}{\mathalpha}{mononumbers}{`1}
\DeclareMathSymbol{2}{\mathalpha}{mononumbers}{`2}
\DeclareMathSymbol{3}{\mathalpha}{mononumbers}{`3}
\DeclareMathSymbol{4}{\mathalpha}{mononumbers}{`4}
\DeclareMathSymbol{5}{\mathalpha}{mononumbers}{`5}
\DeclareMathSymbol{6}{\mathalpha}{mononumbers}{`6}
\DeclareMathSymbol{7}{\mathalpha}{mononumbers}{`7}
\DeclareMathSymbol{8}{\mathalpha}{mononumbers}{`8}
\DeclareMathSymbol{9}{\mathalpha}{mononumbers}{`9}

That doesn't seem to make much of a difference, if any. I tried also  
to use TeX Gyre Termes instead of LMRoman12 Regular, with no luck.

It may be possible to take advantage of fontspec's much easier syntax,  
like

\setmathrm[Numbers={Monospaced,Lining}]{TeX Gyre Termes}

but I couldn't figure out how to make this work.

Bruno