从两个不区分大小写的参数中提供布尔值

Question 1

这也是索引问题的一个希望完整的解决方案。假设物种名称中只有纯 ASCII 字符。

\documentclass[11pt]{article}
\usepackage{makeidx}
\usepackage{biocon}
\usepackage[colorlinks=true,linkcolor=blue]{hyperref}
\makeindex

% Provide \genus{Generic name}
\newcommand\genus[1]{%
  \lowercase{\ifcsname genus@#1\endcsname}\else
    \definnergenus#1\relax
  \fi
  \lowercase{\csname genus@#1\endcsname}%
}
\def\definnergenus#1#2\relax{%
  \def\tempinitial{#1}%
  \lowercase{\def\tempsecond{#2}\def\tempname{#1#2}}%
  \begingroup\edef\x{\endgroup
    \gdef\unexpanded\expandafter{\csname genus@\tempname\endcsname}{%
      \noexpand\emph{\tempinitial\tempsecond}%
      \noexpand\index{\tempname@{\noexpand\em\tempinitial\tempsecond}|textbf}%
    }%
  }\x}

% Provide \species{Generic name}{specific name}
\newcommand\species[2]{%
  \lowercase{\ifcsname species@#1#2\endcsname\else}%
    \definnerspecies#1\relax{#2}%
  \fi
  \lowercase{\csname species@#1#2\endcsname}%
  \lowercase{\csname speciesindex@#1#2\endcsname}%
}
\def\definnerspecies#1#2\relax#3{%
  \uppercase{\def\tempinitial{#1}}%
  \lowercase{\def\tempfirst{#1}\def\tempsecond{#2}\def\tempthird{#3}}%
  \edef\tempname{\tempfirst\tempsecond\tempthird}%
  \begingroup\edef\x{\endgroup
    \gdef\unexpanded\expandafter{\csname species@\tempname\endcsname}{%
      \noexpand\emph{\tempinitial\tempsecond\space\tempthird}%
      \gdef\unexpanded\expandafter{\csname species@\tempname\endcsname}{%
        \noexpand\emph{\tempinitial.\ \tempthird}}}}\x
  \begingroup\edef\x{\endgroup
    \gdef\unexpanded\expandafter{\csname speciesindex@\tempname\endcsname}{%
      \noexpand\index{%
        \tempfirst\tempsecond@{\noexpand\em\tempinitial\tempsecond}!%
        \tempthird@{\noexpand\em\tempthird}}%
    }}\x}

\begin{document}

\noindent Desired ouput of some \genus{Homo} species:\\
\\
\species{Homo}{erectus} \texttt{(full name 1st time, OK)}\\
\\
\species{Homo}{erectus} \texttt{(abbreviation 2nd time, OK)}\\
\species{Homo}{sapiens} \texttt{(indexed as Homo!sapiens, OK)}\\
\species{Homo}{erectus} \\ 
\species{Homo}{sapiens} \texttt{(indexed as as Homo!sapiens too, OK)}

\noindent Testing in tabular environment:\\
\begin{tabular}{|l|l|}
\hline\species{Homo}{habilis} & \\
\hline\species{Homo}{habilis} & \texttt{(works also inside tabular)}\\\hline
\end{tabular}

\noindent\species{Homo}{habilis} method (try again):

\noindent Testing case correction:\\ 
\verb|\species{Homo}{Antecessor}|: \species{Homo}{Antecessor}\\ 
\verb|\species{Homo}{antecessor}|: \species{Homo}{antecessor}\\
\verb|\species{HOMO}{ANTECEsSOR}|: \species{HOMO}{ANTECEsSOR}

\printindex
\end{document}

每个\species命令定义两个命令：例如

\species{Homo}{erectus}

定义

\species@homoerectus
\speciesindex@homoerectus

第一个扩展为直立人并在全球范围内重新定义自己，以扩展到直立人。输入已标准化，因此除了首字母之外，仅使用小写字母。第二个命令处理索引。

如果\speciec@homoerectus未定义（首次出现时\species{Homo}{erectus}，则\definespecies调用全局定义上述两个命令的命令。

类似地，\genus{Homo}在第一次调用时定义一个具有规范化输入的内部宏\genus@homo，负责打印名称并发出索引命令。

以下是图片。

在此处输入图片描述

Answer