在书中，我想用上标 s 标记难懂或困难的部分和练习。我可以使用中的\star宏对如下所示的部分执行此\hard操作。\very hard\section{}
我使用自定义 enumitem 列表环境进行练习，由于某些我无法理解的原因，在和 的输出\exercise\hard之间留了一个空格。有人可以建议如何纠正这个问题吗？Exercise 1.2$\^\star
工作示例：
\documentclass[12pt]{book}
\usepackage{xspace}
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% Define new list type for exercises
% from: http://tex.stackexchange.com/questions/196199/exercise-list-using-enumitem-how-control-indentation-and-labeling-of-sublists
% by: Daniel Wunderlich
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
\usepackage{enumitem} % this should be loaded in book.Rnw
%
\newlist{Exercises}{enumerate}{2}
% set list style parameters
\setlist[Exercises]{%
label=\textbf{Exercise \thechapter.\arabic*}~, % Label: Exercise Chapter.exercise
ref=\thechapter.\arabic*, % References: Chapter.exercise (important!)
align=left, % Left align labels
labelindent=0pt, % No space betw. margin of list and label
leftmargin=0pt, % No space betw. margin of list and following lines
itemindent=!, % Indention of item computed automatically
itemsep=3pt,
}
\newcommand{\exercise}{%
\item\label{lab:\arabic{chapter}.\arabic{Exercisesi}}% % Append label to item
\setlist[enumerate, 1]{label=(\alph*),itemsep=0pt} % Label for subexercises, but only within an exercise
}
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% Symbols for hard or difficult sections and problems
\newcommand{\hard}{$^\star$\xspace}
\newcommand{\veryhard}{$^{\star\star}$\xspace}
\begin{document}
\chapter{First chapter}
\section{First section}
asdfasfasfs
\begin{Exercises}
\exercise What is 2+2?
\exercise\hard How many angels can fit on the head of a pin?
\exercise\veryhard Prove the four-color theorem
\end{Exercises}
\section{A hard section\hard}
asfdAFASFAF
\section{Very hard section\veryhard}
asfdAFASFAF
\end{document}
% ----------------------------------------------------------------
答案1
labelsep=0pt您在设置列表选项时缺少了什么，但是，此时，当没有发出或时Exercises，您必须添加一个空格。\hard\veryhard
梅威瑟：
\documentclass[12pt]{book}
\usepackage{xspace}
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% Define new list type for exercises
% from: http://tex.stackexchange.com/questions/196199/exercise-list-using-enumitem-how-control-indentation-and-labeling-of-sublists
% by: Daniel Wunderlich
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
\usepackage{enumitem} % this should be loaded in book.Rnw
%
\newlist{Exercises}{enumerate}{2}
% set list style parameters
\setlist[Exercises]{%
label=\textbf{Exercise \thechapter.\arabic*}, % Label: Exercise Chapter.exercise
ref=\thechapter.\arabic*, % References: Chapter.exercise (important!)
align=left, % Left align labels
labelindent=0pt, % No space betw. margin of list and label
leftmargin=0pt, % No space betw. margin of list and following lines
itemindent=!, % Indention of item computed automatically
itemsep=3pt,
labelsep=0pt,
}
\newcommand{\exercise}{%
\item\label{lab:\arabic{chapter}.\arabic{Exercisesi}}% % Append label to item
\setlist[enumerate, 1]{label=(\alph*),itemsep=0pt} % Label for subexercises, but only within an exercise
}
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% Symbols for hard or difficult sections and problems
\newcommand{\hard}{$^\star$\xspace}
\newcommand{\veryhard}{$^{\star\star}$\xspace}
\begin{document}
\chapter{First chapter}
\section{First section}
asdfasfasfs
\begin{Exercises}
\exercise\ What is 2+2?
\exercise\hard How many angels can fit on the head of a pin?
\exercise\veryhard Prove the four-color theorem
\end{Exercises}
\section{A hard section\hard}
asfdAFASFAF
\section{Very hard section\veryhard}
asfdAFASFAF
\end{document}
% ----------------------------------------------------------------
输出
另一个解决方案是定义两个新命令
\newcommand{\exhard}{\hspace*{-\labelsep}\hard}
\newcommand{\exveryhard}{\hspace*{-\labelsep}\veryhard}
并使用它们代替\hard和\veryhard之后\exercise
梅威瑟：
\documentclass[12pt]{book}
\usepackage{xspace}
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% Define new list type for exercises
% from: http://tex.stackexchange.com/questions/196199/exercise-list-using-enumitem-how-control-indentation-and-labeling-of-sublists
% by: Daniel Wunderlich
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
\usepackage{enumitem} % this should be loaded in book.Rnw
%
\newlist{Exercises}{enumerate}{2}
% set list style parameters
\setlist[Exercises]{%
label=\textbf{Exercise \thechapter.\arabic*}, % Label: Exercise Chapter.exercise
ref=\thechapter.\arabic*, % References: Chapter.exercise (important!)
align=left, % Left align labels
labelindent=0pt, % No space betw. margin of list and label
leftmargin=0pt, % No space betw. margin of list and following lines
itemindent=!, % Indention of item computed automatically
itemsep=3pt,
}
\newcommand{\exercise}{%
\item\label{lab:\arabic{chapter}.\arabic{Exercisesi}}% % Append label to item
\setlist[enumerate, 1]{label=(\alph*),itemsep=0pt} % Label for subexercises, but only within an exercise
}
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% Symbols for hard or difficult sections and problems
\newcommand{\hard}{$^\star$\xspace}
\newcommand{\veryhard}{$^{\star\star}$\xspace}
\newcommand{\exhard}{\hspace*{-\labelsep}\hard}
\newcommand{\exveryhard}{\hspace*{-\labelsep}\veryhard}
\begin{document}
\chapter{First chapter}
\section{First section}
asdfasfasfs
\begin{Exercises}
\exercise What is 2+2?
\exercise\exhard How many angels can fit on the head of a pin?
\exercise\exveryhard Prove the four-color theorem
\end{Exercises}
\section{A hard section\hard}
asfdAFASFAF
\section{Very hard section\veryhard}
asfdAFASFAF
\end{document}
% ----------------------------------------------------------------
输出：
编辑
如果你想改善练习的外观，你可以定义以下命令
\newcommand{\simpleexercise}{\exercise\ \hphantom{\veryhard}}
\newcommand{\hardexercise}{\exercise\hard\hphantom{\hard}}
\newcommand{\veryhardexercise}{\exercise\veryhard\hphantom{\ }}
并使用它们代替，\exercise如以下示例所示
\documentclass[12pt]{book}
\usepackage{xspace}
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% Define new list type for exercises
% from: http://tex.stackexchange.com/questions/196199/exercise-list-using-enumitem-how-control-indentation-and-labeling-of-sublists
% by: Daniel Wunderlich
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
\usepackage{enumitem} % this should be loaded in book.Rnw
%
\newlist{Exercises}{enumerate}{2}
% set list style parameters
\setlist[Exercises]{%
label=\textbf{Exercise \thechapter.\arabic*}, % Label: Exercise Chapter.exercise
ref=\thechapter.\arabic*, % References: Chapter.exercise (important!)
align=left, % Left align labels
labelindent=0pt, % No space betw. margin of list and label
leftmargin=0pt, % No space betw. margin of list and following lines
itemindent=!, % Indention of item computed automatically
itemsep=3pt,
labelsep=0pt,
}
\newcommand{\exercise}{%
\item\label{lab:\arabic{chapter}.\arabic{Exercisesi}}% % Append label to item
\setlist[enumerate, 1]{label=(\alph*),itemsep=0pt} % Label for subexercises, but only within an exercise
}
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% Symbols for hard or difficult sections and problems
\newcommand{\hard}{$^\star$\xspace}
\newcommand{\veryhard}{$^{\star\star}$\xspace}
\newcommand{\simpleexercise}{\exercise\ \hphantom{\veryhard}}
\newcommand{\hardexercise}{\exercise\hard\hphantom{\hard}}
\newcommand{\veryhardexercise}{\exercise\veryhard\hphantom{\ }}
\begin{document}
\chapter{First chapter}
\section{First section}
asdfasfasfs
\begin{Exercises}
\simpleexercise What is 2+2?
\hardexercise How many angels can fit on the head of a pin?
\veryhardexercise Prove the four-color theorem
\end{Exercises}
\section{A hard section\hard}
asfdAFASFAF
\section{Very hard section\veryhard}
asfdAFASFAF
\end{document}
% ----------------------------------------------------------------
输出：
