Path: utzoo!utgpu!news-server.csri.toronto.edu!torsqnt!geac!sq!lsuc!maccs!art
From: art@maccs.dcss.mcmaster.ca (Art Mulder)
Newsgroups: comp.text.tex
Subject: listoffigures question/problem
Summary: \underline causes a jump out of mathmode for some reason
Keywords: latex listoffigures math mode
Message-ID: <26AB19EC.17589@maccs.dcss.mcmaster.ca>
Date: 23 Jul 90 15:38:20 GMT
Distribution: na
Organization: McMaster University, Hamilton, Ontario, Canada
Lines: 44


Hello all,
  I trying to get \listoffigures to work and am having some difficulty.

I have some simple macro's:
|  \newcommand{\un}{\underline}
|  \newcommand{\pth}[1]{\un{path} \; #1 \; \un{end}}

used in a caption of a figure as follows:
|  \caption{Labelled sm net intuitively corresponding to $\pth{a;a}$
|           \label{fig:227}}

which puts the following into my .lof file:
[originally this was all one line, I have inserted line breaks]
|  \contentsline {figure}{\numberline {2.30}{\ignorespaces Labelled
|  sm net intuitively corresponding to $\relax $\@@underline {\hbox
|  {path}}$\relax \mskip \thickmuskip a;a \mskip \thickmuskip \relax
|  $\@@underline {\hbox {end}}$\relax $ }}{81}

when I run the file through latex for the second time (to get the 
cross references right) I get this error:
|  ! Missing $ inserted
|  < inserted text>
|		   $
|  ...
|  l.32 ...$\@@underline {\hbox{path}}$\relax $ }}{81}

It appears that latex is putting extra begin-math-mode end-math-mode dollar
signs around the text that is underlined in the caption!  This occurs in
several captions that I have, all with regards to underlining.  When I
manually take out the extra dollar signs, latex works.

Now I can keep doing this, but there are about 10-15 instances of
underlining in captions, and ever time I process the book I have to manually
correct them, and it is a pain.

Am I doing something wrong?  Can anyone suggest a way for me to work around
this?  Any help is appreciated.  Please email to me and I will post the
solution if there is one.

-- 
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Art Mulder,                                      art@maccs.DCSS.mcmaster.ca
                                             ...!uunet!utai!utgpu!maccs!art