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\ifstrequal 在表格中产生虚假空格

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\ifstrequal 在表格中产生虚假空格

我正在为我大学的论文格式编写 LaTeX 课程，该课程要求在标题页上写上签名行。签名行的标签因论文类型而异，因此我使用了参数化的 \maketitle 宏。但是，除 coop 之外的任何操作都会导致论文导师签名行前面出现多余的空格。下面是一个最低限度的失败示例。

\documentclass{report}
\usepackage{etoolbox}

\begin{document}
\newcommand{\siglines}[1][coop]{
   \begin{tabular}{@{}l}
   \\ \hline
   Student    \\
   \\
   \\ \hline
   \ifstrequal{#1}{coop}{Employer Thesis Advisor~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~}{}
   \ifstrequal{#1}{research}{Faculty Thesis Advisor~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~}{}
   \ifstrequal{#1}{pp}{Company Liaison~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~}{}
   \ifstrequal{#1}{eship}{Faculty Thesis Advisor~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~}{} \\
   \\
   \\ \hline
   \ifstrequal{#1}{coop}{Faculty Thesis Advisor}{}
   \ifstrequal{#1}{research}{Committee Member}{}
   \ifstrequal{#1}{pp}{Faculty Thesis Advisor}{}
   \ifstrequal{#1}{eship}{Committee Member}{} \\
   \end{tabular}
}

\siglines[eship]
\end{document}

我该如何抑制这些空间？如果是合作模式，似乎没有空间，而研究、pp 和 eship 模式会增加空间。

另外，关于 tex.sx 的问题：我如何让它呈现 MFE 并将其插入到我的问题中，以便我可以显示它的渲染效果？

答案1

换行符就是空格。空格就是空格。%如果不需要空格，请使用符号来结束行。

例如：

\documentclass{report}
\usepackage{etoolbox}

\begin{document}
  \newcommand{\siglines}[1][coop]{%
    \begin{tabular}{@{}l}
      \\\hline
      Student\\
      \\
      \\\hline
      \ifstrequal{#1}{coop}{Employer Thesis Advisor~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~}{}%
      \ifstrequal{#1}{research}{Faculty Thesis Advisor~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~}{}%
      \ifstrequal{#1}{pp}{Company Liaison~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~}{}%
      \ifstrequal{#1}{eship}{Faculty Thesis Advisor~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~}{}\\
      \\
      \\\hline
      \ifstrequal{#1}{coop}{Faculty Thesis Advisor}{}%
      \ifstrequal{#1}{research}{Committee Member}{}%
      \ifstrequal{#1}{pp}{Faculty Thesis Advisor}{}%
      \ifstrequal{#1}{eship}{Committee Member}{}\\
    \end{tabular}
  }

  \siglines[eship]
\end{document}

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