beamer类加载enumerate包允许我们使用 key 1,a,A,i,I。在我的目的中，我想添加两个名为m和k的键高棉语(柬埔寨语)数字和字母分别。我尝试重新定义\@enloop@我找到的现有键定义。这是我的 MWE
\documentclass[12pt,serif]{beamer}
%TODO: Khmer (Cambodian)
\usepackage[no-math]{fontspec}% no math font
\setmainfont{Khmer OS System}% roman font
\setsansfont{Khmer OS Bokor}% sans serif font
\setmonofont{Khmer OS Freehand}% typewriter font
\XeTeXlinebreaklocale "khm"% line break rule
\XeTeXlinebreakskip = 0pt plus 1pt minus 0.5pt% line break skip
%TODO: Khmer number
\def\khmer#1{\expandafter\@khmer\csname c@#1\endcsname}
\def\@khmer#1{\expandafter\@@khmer\number#1\@nil}
\def\@@khmer#1{%
\ifx#1\@nil% terminate when encounter @nil
\else%
\ifcase#1 ០\or ១\or ២\or ៣\or ៤\or ៥\or ៦\or ៧\or ៨\or ៩\fi%
\expandafter\@@khmer% recursively map the following characters
\fi}
\def\khmernumeral#1{\@@khmer#1\@nil}
%TODO: khmer alphabet
\def\alpkh#1{\expandafter\@alpkh\csname c@#1\endcsname}
\def\@alpkh#1{%
\ifcase#1% zero -> none
\or ក\or ខ\or គ\or ឃ\or ង%
\or ច\or ឆ\or ជ\or ឈ\or ញ%
\or ដ\or ឋ\or ឌ\or ឍ\or ណ%
\or ត\or ថ\or ទ\or ធ\or ន%
\or ប\or ផ\or ព\or ភ\or ម%
\or យ\or រ\or ល\or វ\or ស%
\or ហ\or ឡ\or អ%
\else%
\@ctrerr% otherwise, counter error!
\fi}
%TODO: try to add 2 more key to `enumerate' called [m] and [k]
\makeatletter
\def\@enloop@{%
\ifx A\@entemp \def\@tempa{\@enLabel\Alph }\else
\ifx a\@entemp \def\@tempa{\@enLabel\alph }\else
\ifx i\@entemp \def\@tempa{\@enLabel\roman }\else
\ifx I\@entemp \def\@tempa{\@enLabel\Roman }\else
\ifx 1\@entemp \def\@tempa{\@enLabel\arabic}\else
\ifx k\@entemp \def\@tempa{\@enLabel\alpkh }\else% added
\ifx m\@entemp \def\@tempa{\@enLabel\khmer }\else% added
\ifx \@sptoken\@entemp \let\@tempa\@enSpace \else
\ifx \bgroup\@entemp \let\@tempa\@enGroup \else
\ifx \@enum@\@entemp \let\@tempa\@gobble \else
\let\@tempa\@enOther
\@enhook
\fi\fi\fi\fi\fi\fi\fi\fi\fi\fi% 2 \fi added
\@tempa}
\makeatother
%
\setbeamertemplate{items}[circle]
%
\begin{document}
\begin{frame}
\begin{enumerate}[k]
\item add enumerate key
\item for use with Khmer alphabets and numerals
\end{enumerate}
\end{frame}
\begin{frame}
\begin{enumerate}[m]
\item add enumerate key
\item for use with Khmer alphabets and numerals
\end{enumerate}
\end{frame}
\end{document}
看上去有效，但实际上无效。需要帮助！
答案1
只需将 移至@cgnieder 在评论中指出makeatletter之前的一行即可解决问题。\def\khmer
\documentclass[12pt,serif]{beamer}
%TODO: Khmer (Cambodian)
\usepackage[no-math]{fontspec}% no math font
\setmainfont{Khmer OS System}% roman font
\setsansfont{Khmer OS Bokor}% sans serif font
\setmonofont{Khmer OS Freehand}% typewriter font
\XeTeXlinebreaklocale "khm"% line break rule
\XeTeXlinebreakskip = 0pt plus 1pt minus 0.5pt% line break skip
%TODO: Khmer number
\makeatletter
\def\khmer#1{\expandafter\@khmer\csname c@#1\endcsname}
\def\@khmer#1{\expandafter\@@khmer\number#1\@nil}
\def\@@khmer#1{%
\ifx#1\@nil% terminate when encounter @nil
\else%
\ifcase#1 ០\or ១\or ២\or ៣\or ៤\or ៥\or ៦\or ៧\or ៨\or ៩\fi%
\expandafter\@@khmer% recursively map the following characters
\fi}
\def\khmernumeral#1{\@@khmer#1\@nil}
%TODO: khmer alphabet
\def\alpkh#1{\expandafter\@alpkh\csname c@#1\endcsname}
\def\@alpkh#1{%
\ifcase#1% zero -> none
\or ក\or ខ\or គ\or ឃ\or ង%
\or ច\or ឆ\or ជ\or ឈ\or ញ%
\or ដ\or ឋ\or ឌ\or ឍ\or ណ%
\or ត\or ថ\or ទ\or ធ\or ន%
\or ប\or ផ\or ព\or ភ\or ម%
\or យ\or រ\or ល\or វ\or ស%
\or ហ\or ឡ\or អ%
\else%
\@ctrerr% otherwise, counter error!
\fi}
%TODO: try to add 2 more key to `enumerate' called [m] and [k]
\def\@enloop@{%
\ifx A\@entemp \def\@tempa{\@enLabel\Alph }\else
\ifx a\@entemp \def\@tempa{\@enLabel\alph }\else
\ifx i\@entemp \def\@tempa{\@enLabel\roman }\else
\ifx I\@entemp \def\@tempa{\@enLabel\Roman }\else
\ifx 1\@entemp \def\@tempa{\@enLabel\arabic}\else
\ifx k\@entemp \def\@tempa{\@enLabel\alpkh }\else% added
\ifx m\@entemp \def\@tempa{\@enLabel\khmer }\else% added
\ifx \@sptoken\@entemp \let\@tempa\@enSpace \else
\ifx \bgroup\@entemp \let\@tempa\@enGroup \else
\ifx \@enum@\@entemp \let\@tempa\@gobble \else
\let\@tempa\@enOther
\@enhook
\fi\fi\fi\fi\fi\fi\fi\fi\fi\fi% 2 \fi added
\@tempa}
\makeatother
%
\setbeamertemplate{items}[circle]
%
\begin{document}
\begin{frame}
\begin{enumerate}[k]
\item add enumerate key
\item for use with Khmer alphabets and numerals
\end{enumerate}
\end{frame}
\begin{frame}
\begin{enumerate}[m]
\item add enumerate key
\item for use with Khmer alphabets and numerals
\end{enumerate}
\end{frame}
\end{document}
