“abbr”后面有一个多余的空格，导致“printsorted”无法运行。我犯了什么错误？
梅威瑟：
\documentclass[12pt]{article}
%%%%%%%%%%%%%%%%
\def\addtosorten#1#2{%
\directlua{%
tblen=tblen or {}%
table.insert(tblen, {abbr="\luaescapestring{#1}", desc="\luaescapestring{#2}"})
}
}
\newcommand{\keyen}[2]{#1\addtosorten{#1}{#2}}
%%%%%%%%%%%%%%%%
\def\printsorted{%
\directlua{%
tblen=tblen or {}
table.sort(tblen)
for i,n in ipairs(tblen) do
tex.print("\string\\printkw{" .. n.abbr .. "}{" .. n.desc .. "}")
end
}}
\newcommand\printkw[2]{\textbf{#1}~-- #2.\\}
\newcommand{\placekeywordshere}{%
\typeout{KW: NOW SHOWING}
\noindent\rule{\textwidth}{3pt}
\noindent\printsorted
}
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\begin{document}
\keyen{LED}{Light emitting diode}.
\keyen{FET}{Field effect transistor}.
\keyen{SCADA}{Supervisory control and data acquisition}.
\placekeywordshere
\end{document}
答案1
常见问题：未受保护的结束行。不要使用\\来结束段落，除非您在 的范围内\raggedright，例如在 中flushleft。
\documentclass[12pt]{article}
\newcommand\addtosorten[2]{%
\directlua{%
tblen=tblen or {}%
table.insert(tblen, {abbr="\luaescapestring{#1}", desc="\luaescapestring{#2}"})
}% <--- HERE!
}
\newcommand{\keyen}[2]{#1\addtosorten{#1}{#2}}
%%%%%%%%%%%%%%%%
\newcommand\printsorted{%
\directlua{%
tblen=tblen or {}
%table.sort(tblen)
table.sort(tblen, function (a,b) return (a.abbr < b.abbr) end)
for i,n in ipairs(tblen) do
tex.print("\string\\printkw{" .. n.abbr .. "}{" .. n.desc .. "}")
end
}}
\newcommand\printkw[2]{\textbf{#1}~-- #2.\\}
\newcommand{\placekeywordshere}{%
\typeout{KW: NOW SHOWING}
\begin{flushleft}
\rule{\textwidth}{3pt}\\
\printsorted
\end{flushleft}
}
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\begin{document}
\keyen{LED}{Light emitting diode}.
\keyen{FET}{Field effect transistor}.
\keyen{SCADA}{Supervisory control and data acquisition}.
\placekeywordshere
\end{document}
