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[vox-tech] TeX question: writing a robust fraction macro

# [vox-tech] TeX question: writing a robust fraction macro

I'm trying to write a robust macro for literary-style fractions, in which the
numerator is superscript and the denominator is subscript around a slanted
line, not a strait line as in $\frac{1}{2}$. I came with:

\def\frac#1#2{
$^#1\!\!/\!\!_#2$
}

which is fine except that the fraction is always set in roman even in an
italic block. I tried again:

\def\frac#1#2{
\raisebox{0.3ex}{\footnotesize{#1}}%
\$\!/\!\!%
\raisebox{-0.3ex}{\footnotesize{#2}}
}

except that there is now too much space between the denominator and the line
when set in roman and too little in italic.

I would appreciate any ideas on how to improve this.

--
Henry House
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