Path: utzoo!attcan!uunet!mcsun!hp4nl!ruuinf!piet
From: piet@cs.ruu.nl (Piet van Oostrum)
Newsgroups: comp.text.tex
Subject: Re: LaTeX Indexing
Message-ID: <3430@ruuinf.cs.ruu.nl>
Date: 11 Jun 90 09:45:11 GMT
References: <486@van-bc.wimsey.bc.ca>
Sender: news@ruuinf.cs.ruu.nl
Reply-To: piet@cs.ruu.nl (Piet van Oostrum)
Organization: Dept of Computer Science, Utrecht University, The Netherlands
Lines: 21
In-reply-to: jtc@van-bc.wimsey.bc.ca (J.T. Conklin)

In article <486@van-bc.wimsey.bc.ca>, jtc@van-bc (J.T. Conklin) writes:

 |					  I tried using \lowercase{},
 |but it isn't evaluated until the index is printed.
 |
 |	\newcommand{\code}[1]{{\bf #1}\index{\lowercase{#1}}}
 |
\uppercase and \lowercase are strange beasts, as they are not expandable
(evaluation is a non-TeX term), this means that they only do something when
they are processed in TeX's ``stomach'', i.e. when they are about to be
processed as output. The converted token list is then again read as input.
So in this case the following will probably work:

\lowercase{\index{#1}}

I don't know why Knuth choose this way rather than making them expandable.
-- 
Piet* van Oostrum, Dept of Computer Science, Utrecht University,
Padualaan 14, P.O. Box 80.089, 3508 TB Utrecht, The Netherlands.
Telephone: +31-30-531806   Uucp:   uunet!mcsun!ruuinf!piet
Telefax:   +31-30-513791   Internet:  piet@cs.ruu.nl   (*`Pete')