我的.lhs文件中有以下代码块，它使用内联TeX注释：
\begin{code}
main = print 0
{-"$\langle$Link$\rangle$"-}
\end{code}
但是，在使用lhs2TeX进行编译后，在编译生成的.tex文件时出现以下错误：
! Missing $ inserted.
<inserted text>
$
l.269 \end{hscode}
\resethooks
I've inserted a begin-math/end-math symbol since I think
you left one out. Proceed, with fingers crossed.
! LaTeX Error: Bad math environment delimiter.
See the LaTeX manual or LaTeX Companion for explanation.
Type H <return> for immediate help.
...
l.269 \end{hscode}
\resethooks
Your command was ignored.
Type I <command> <return> to replace it with another command,
or <return> to continue without it.
! Missing $ inserted.
<inserted text>
$
l.269 \end{hscode}
\resethooks
I've inserted a begin-math/end-math symbol since I think
you left one out. Proceed, with fingers crossed.
! LaTeX Error: Bad math environment delimiter.
See the LaTeX manual or LaTeX Companion for explanation.
Type H <return> for immediate help.
...
l.269 \end{hscode}
\resethooks
Your command was ignored.
Type I <command> <return> to replace it with another command,
or <return> to continue without it.
! Missing $ inserted.
<inserted text>
$
l.269 \end{hscode}
\resethooks
I've inserted a begin-math/end-math symbol since I think
you left one out. Proceed, with fingers crossed.
! LaTeX Error: Bad math environment delimiter.
See the LaTeX manual or LaTeX Companion for explanation.
Type H <return> for immediate help.
...
l.269 \end{hscode}
\resethooks
Your command was ignored.
当我删除内联评论中的“标记时，错误消失。有人知道什么是错的吗？
P.S这是lhs2TeX生成的.tex文件：
\documentclass{article}%% ODER: format == = "\mathrel{==}"
%% ODER: format /= = "\neq "
%
%
\makeatletter
\@ifundefined{lhs2tex.lhs2tex.sty.read}%
{\@namedef{lhs2tex.lhs2tex.sty.read}{}%
\newcommand\SkipToFmtEnd{}%
\newcommand\EndFmtInput{}%
\long\def\SkipToFmtEnd#1\EndFmtInput{}%
}\SkipToFmtEnd
\newcommand\ReadOnlyOnce[1]{\@ifundefined{#1}{\@namedef{#1}{}}\SkipToFmtEnd}
\usepackage{amstext}
\usepackage{amssymb}
\usepackage{stmaryrd}
\DeclareFontFamily{OT1}{cmtex}{}
\DeclareFontShape{OT1}{cmtex}{m}{n}
{<5><6><7><8>cmtex8
<9>cmtex9
<10><10.95><12><14.4><17.28><20.74><24.88>cmtex10}{}
\DeclareFontShape{OT1}{cmtex}{m}{it}
{<-> ssub * cmtt/m/it}{}
\newcommand{\texfamily}{\fontfamily{cmtex}\selectfont}
\DeclareFontShape{OT1}{cmtt}{bx}{n}
{<5><6><7><8>cmtt8
<9>cmbtt9
<10><10.95><12><14.4><17.28><20.74><24.88>cmbtt10}{}
\DeclareFontShape{OT1}{cmtex}{bx}{n}
{<-> ssub * cmtt/bx/n}{}
\newcommand{\tex}[1]{\text{\texfamily#1}} % NEU
\newcommand{\Sp}{\hskip.33334em\relax}
\newcommand{\Conid}[1]{\mathit{#1}}
\newcommand{\Varid}[1]{\mathit{#1}}
\newcommand{\anonymous}{\kern0.06em \vbox{\hrule\@width.5em}}
\newcommand{\plus}{\mathbin{+\!\!\!+}}
\newcommand{\bind}{\mathbin{>\!\!\!>\mkern-6.7mu=}}
\newcommand{\rbind}{\mathbin{=\mkern-6.7mu<\!\!\!<}}% suggested by Neil Mitchell
\newcommand{\sequ}{\mathbin{>\!\!\!>}}
\renewcommand{\leq}{\leqslant}
\renewcommand{\geq}{\geqslant}
\usepackage{polytable}
%mathindent has to be defined
\@ifundefined{mathindent}%
{\newdimen\mathindent\mathindent\leftmargini}%
{}%
\def\resethooks{%
\global\let\SaveRestoreHook\empty
\global\let\ColumnHook\empty}
\newcommand*{\savecolumns}[1][default]%
{\g@addto@macro\SaveRestoreHook{\savecolumns[#1]}}
\newcommand*{\restorecolumns}[1][default]%
{\g@addto@macro\SaveRestoreHook{\restorecolumns[#1]}}
\newcommand*{\aligncolumn}[2]%
{\g@addto@macro\ColumnHook{\column{#1}{#2}}}
\resethooks
\newcommand{\onelinecommentchars}{\quad-{}- }
\newcommand{\commentbeginchars}{\enskip\{-}
\newcommand{\commentendchars}{-\}\enskip}
\newcommand{\visiblecomments}{%
\let\onelinecomment=\onelinecommentchars
\let\commentbegin=\commentbeginchars
\let\commentend=\commentendchars}
\newcommand{\invisiblecomments}{%
\let\onelinecomment=\empty
\let\commentbegin=\empty
\let\commentend=\empty}
\visiblecomments
\newlength{\blanklineskip}
\setlength{\blanklineskip}{0.66084ex}
\newcommand{\hsindent}[1]{\quad}% default is fixed indentation
\let\hspre\empty
\let\hspost\empty
\newcommand{\NB}{\textbf{NB}}
\newcommand{\Todo}[1]{$\langle$\textbf{To do:}~#1$\rangle$}
\EndFmtInput
\makeatother
%
%
%
%
%
%
% This package provides two environments suitable to take the place
% of hscode, called "plainhscode" and "arrayhscode".
%
% The plain environment surrounds each code block by vertical space,
% and it uses \abovedisplayskip and \belowdisplayskip to get spacing
% similar to formulas. Note that if these dimensions are changed,
% the spacing around displayed math formulas changes as well.
% All code is indented using \leftskip.
%
% Changed 19.08.2004 to reflect changes in colorcode. Should work with
% CodeGroup.sty.
%
\ReadOnlyOnce{polycode.fmt}%
\makeatletter
\newcommand{\hsnewpar}[1]%
{{\parskip=0pt\parindent=0pt\par\vskip #1\noindent}}
% can be used, for instance, to redefine the code size, by setting the
% command to \small or something alike
\newcommand{\hscodestyle}{}
% The command \sethscode can be used to switch the code formatting
% behaviour by mapping the hscode environment in the subst directive
% to a new LaTeX environment.
\newcommand{\sethscode}[1]%
{\expandafter\let\expandafter\hscode\csname #1\endcsname
\expandafter\let\expandafter\endhscode\csname end#1\endcsname}
% "compatibility" mode restores the non-polycode.fmt layout.
\newenvironment{compathscode}%
{\par\noindent
\advance\leftskip\mathindent
\hscodestyle
\let\\=\@normalcr
\let\hspre\(\let\hspost\)%
\pboxed}%
{\endpboxed\)%
\par\noindent
\ignorespacesafterend}
\newcommand{\compaths}{\sethscode{compathscode}}
% "plain" mode is the proposed default.
% It should now work with \centering.
% This required some changes. The old version
% is still available for reference as oldplainhscode.
\newenvironment{plainhscode}%
{\hsnewpar\abovedisplayskip
\advance\leftskip\mathindent
\hscodestyle
\let\hspre\(\let\hspost\)%
\pboxed}%
{\endpboxed%
\hsnewpar\belowdisplayskip
\ignorespacesafterend}
\newenvironment{oldplainhscode}%
{\hsnewpar\abovedisplayskip
\advance\leftskip\mathindent
\hscodestyle
\let\\=\@normalcr
\(\pboxed}%
{\endpboxed\)%
\hsnewpar\belowdisplayskip
\ignorespacesafterend}
% Here, we make plainhscode the default environment.
\newcommand{\plainhs}{\sethscode{plainhscode}}
\newcommand{\oldplainhs}{\sethscode{oldplainhscode}}
\plainhs
% The arrayhscode is like plain, but makes use of polytable's
% parray environment which disallows page breaks in code blocks.
\newenvironment{arrayhscode}%
{\hsnewpar\abovedisplayskip
\advance\leftskip\mathindent
\hscodestyle
\let\\=\@normalcr
\(\parray}%
{\endparray\)%
\hsnewpar\belowdisplayskip
\ignorespacesafterend}
\newcommand{\arrayhs}{\sethscode{arrayhscode}}
% The mathhscode environment also makes use of polytable's parray
% environment. It is supposed to be used only inside math mode
% (I used it to typeset the type rules in my thesis).
\newenvironment{mathhscode}%
{\parray}{\endparray}
\newcommand{\mathhs}{\sethscode{mathhscode}}
% texths is similar to mathhs, but works in text mode.
\newenvironment{texthscode}%
{\(\parray}{\endparray\)}
\newcommand{\texths}{\sethscode{texthscode}}
% The framed environment places code in a framed box.
\def\codeframewidth{\arrayrulewidth}
\RequirePackage{calc}
\newenvironment{framedhscode}%
{\parskip=\abovedisplayskip\par\noindent
\hscodestyle
\arrayrulewidth=\codeframewidth
\tabular{@{}|p{\linewidth-2\arraycolsep-2\arrayrulewidth-2pt}|@{}}%
\hline\framedhslinecorrect\\{-1.5ex}%
\let\endoflinesave=\\
\let\\=\@normalcr
\(\pboxed}%
{\endpboxed\)%
\framedhslinecorrect\endoflinesave{.5ex}\hline
\endtabular
\parskip=\belowdisplayskip\par\noindent
\ignorespacesafterend}
\newcommand{\framedhslinecorrect}[2]%
{#1[#2]}
\newcommand{\framedhs}{\sethscode{framedhscode}}
% The inlinehscode environment is an experimental environment
% that can be used to typeset displayed code inline.
\newenvironment{inlinehscode}%
{\(\def\column##1##2{}%
\let\>\undefined\let\<\undefined\let\\\undefined
\newcommand\>[1][]{}\newcommand\<[1][]{}\newcommand\\[1][]{}%
\def\fromto##1##2##3{##3}%
\def\nextline{}}{\) }%
\newcommand{\inlinehs}{\sethscode{inlinehscode}}
% The joincode environment is a separate environment that
% can be used to surround and thereby connect multiple code
% blocks.
\newenvironment{joincode}%
{\let\orighscode=\hscode
\let\origendhscode=\endhscode
\def\endhscode{\def\hscode{\endgroup\def\@currenvir{hscode}\\}\begingroup}
%\let\SaveRestoreHook=\empty
%\let\ColumnHook=\empty
%\let\resethooks=\empty
\orighscode\def\hscode{\endgroup\def\@currenvir{hscode}}}%
{\origendhscode
\global\let\hscode=\orighscode
\global\let\endhscode=\origendhscode}%
\makeatother
\EndFmtInput
%
\begin{document}\section{}Precis 0
\newline{}\subsubsection*{\texttt{test0.tweave:}}\begin{hscode}\SaveRestoreHook
\column{B}{@{}>{\hspre}l<{\hspost}@{}}%
\column{E}{@{}>{\hspre}l<{\hspost}@{}}%
\>[B]{}\Varid{main}\mathrel{=}\Varid{print}\;\mathrm{0}{}\<[E]%
\\
\>[B]{}$\langle$Link$\rangle${}\<[E]%
\ColumnHook
\end{hscode}\resethooks
\section{}Precis 1
\newline{}\subsubsection*{\texttt{test0.tweave:}}\begin{hscode}\SaveRestoreHook
\column{B}{@{}>{\hspre}l<{\hspost}@{}}%
\column{E}{@{}>{\hspre}l<{\hspost}@{}}%
\>[B]{}\Varid{accum}\;\Varid{i}\mathrel{=}\Varid{id}{}\<[E]%
\ColumnHook
\end{hscode}\resethooks
\end{document}
答案 0 :(得分：1)
{-" ... "-}构造非常低级。它会让您陷入TeX当前所处的环境中，这恰好是数学模式。所以问题的解决方案很简单。编写要插入的代码，就像处于数学模式一样。
另一种选择是使用普通评论，但使用\invisiblecomments使评论字符不可见。正常注释由lhs2TeX排版为文本。
以下完整的lhs2TeX文档演示了两个选项：
\documentclass{article}
%include polycode.fmt
\begin{document}
% Assume you are in math mode already:
\begin{code}
main = print 0
{-"\langle\text{Link}\rangle"-}
\end{code}
% This works, too:
\invisiblecomments
\begin{code}
main = print 0
{- $\langle$Link$\rangle$ -}
\end{code}
\end{document}