# [XeTeX] Fake italics for some characters only

John Was johnoxuk at gmail.com
Wed Dec 5 17:06:12 CET 2018

Hello

Not a good example obviously - the macros are surrounded by braces in the
definition only because they are in an \hbox there.  But the braces are
certainly needed in *usage*:  \overstrike{b}{p} (to give a rough impression
of a thorn).  But if you wanted a simple macro, say one that reversed two
arguments, you could have e.g.

\def\swap#1#2{#2#1}

with no extra braces aside from those needed to open and close the
definition.  You would still need them in *usage*, of course.

But we're rather far from the original question by now!  I hope the fake
italics are now working, however he is achieving them.

Best

John

On Wed, 5 Dec 2018 at 15:58, Arthur Reutenauer <
arthur.reutenauer at normalesup.org> wrote:

> On Wed, Dec 05, 2018 at 02:47:26PM +0000, John Was wrote:
> > Ah, another quirk of LaTeX.
>
>   Of TeX.  As you can see in your own example:
>
> > \def\overstrike#1#2{\setbox0=\hbox{#1}\setbox1=\hbox{#2}\copy0
> >    \kern -0.5\wd0 \kern -0.5\wd1 \copy1 \kern -0.5\wd1 \kern 0.5\wd0}
>
> the arguments are surrounded by curly braces in the macro definition.
> With the definition you wrote:
>
> >>> \def\Textit#1{{\italictrue \textit #1}}
>
> \textit would use only the first token of #1 at the end of the
> definition.  This has nothing to do with LaTeX macros or syntax.
>
>         Best,
>
>                 Arthur
>
>
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