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From: Hans Hagen <pragma@wxs.nl>
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Subject: Re: Commands in verbatim
Date: Tue, 21 Dec 1999 17:37:19 +0100
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At 01:08 PM 12/21/99 +0100, Zeljko Vrba wrote:
>I put this in my file:
>\setuptyping[option=commands,escape=?]
>(I want ? to be escape character because it will not interfere with other
>characters I'll be using in verbatim)
>
>then this:
>\starttyping
>	?underbar{if} expr ..
>\stoptyping
>
>and get this error message:
>
>! Undefined control sequence.
><argument>     \underbar{if}

Since all chars are letters, the {} are not handled. Another escape is
using <<if>> and option=slanted. 

>regular cmr font. BTW, /bf (?bf) works fine. ?underbar if just places a
>single underbar, like this:
>	_if
>(this is typeset by ?underbar if). I'd like
>	if
>	--
>Is it possible to do it?

You could try: 

  \def\Key#1#2x{\underbar{#2}}

(the spaces are important)

  .... ?Key ifx 

that way the x acts as sentinel. 

Even better: 

\def\IfKey{\underbar{if}}

  .... ?IfKey .... 

I would go for the last alternative. 

Hans

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