如何在 LaTeX 中设置空格后的制表位？

发布于 2024-08-27 17:12:50 字数 238 浏览 16 评论 0原文

我正在尝试在制表环境中的 LaTeX 中设置制表位。我的问题是我想在多个空格后设置一个制表位。问题是 LaTeX 当然会忽略多个空格，而且它似乎只支持在实际文本后设置制表位。

我想要做的是格式化下面的箭头，使它们对齐在一起。

A   -> B
CD  -> A 
BDD -> F

问题在于，为了设置制表位，箭头左侧字符后面的额外空格将被忽略。解决办法是什么？

原文

I'm trying to set tab stops in LaTeX in the tabbing environment. My problem is that I want to set a tab stop after a number of whitespaces. The problem is that LaTeX of course ignores multiple whitespaces, and it seems to only support setting tab stops after actual text.

What I would like to be able to do is format the arrows below so that they line up together.

A   -> B
CD  -> A 
BDD -> F

The problem is that the extra spaces after the characters on the left of the arrows are ignored for the purposes of setting the tab stop. What is the solution?

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许久 2024-09-03 17:12:50

tabbing 环境允许设置制表位并相应地定位文本；它可用于模拟简单的表格。

第一行中的 \= 设置制表位，\> 前进到第二行及以下的下一个制表位。

请注意，制表符不会扩展制表位，因此您需要确保它们彼此之间的距离足够宽。例如，我在第一行的 A 之后放置了一些不可破坏的空格：

\begin{tabbing}
A~~~~ \= $\to$ \= B \\
CD \> $\to$ \> A \\
BDD \> $\to$ \> F \\
\end{tabbing}

结果看起来像

result Screenshot

使用表格（例如 tabular）通常更容易，但是 tabbing 允许稍后重新定义制表点，因此它可以用于模拟缩进文本，如源代码。

另请参阅：LaTeX：制表符。

The tabbing environment allows to set tab stops and position text accordingly; it may be used to simulate simple tables.

\= in the first line sets a tab stop, \> advances to the next tab stop in the second line and below.

Please note that tabbing does not expand tab stops, so you need to ensure they are placed wide enough from each other. For example, I put some nonbreakable spaces after A in the first line:

\begin{tabbing}
A~~~~ \= $\to$ \= B \\
CD \> $\to$ \> A \\
BDD \> $\to$ \> F \\
\end{tabbing}

The result looks like

result screenshot

Using tables (e.g. tabular) is often easier, but tabbing allows to redefine tab points later, so it may be used to simulate indented text, like source code.

See also: LaTeX: tabbing.

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韵柒 2024-09-03 17:12:50

如果您希望在数学模式下使用此功能，请将 \usepackage{amsmath} 放入序言中，然后尝试与

\begin{align*}
  A &\to B \\
  CD &\to A
\end{align*}

符号不可见，并且彼此对齐，因此箭头将对齐。

这也可以在文本模式下以表格形式完成（无需 amsmath 包）：

\begin{tabular}{r @{$\to$} l}
  A & B \\
  CD & A
\end{tabular}

使用列规范中的 @ 表达式，列将由任何符号分隔你喜欢——在本例中是箭头——从而在行之间对齐该符号。

If you want this in math mode, put \usepackage{amsmath} in your preamble, and try

\begin{align*}
  A &\to B \\
  CD &\to A
\end{align*}

The ampersands are invisible, and are aligned with each other, so the arrows will line up.

This can also be done in text mode as a table (without needing the amsmath package):

\begin{tabular}{r @{$\to$} l}
  A & B \\
  CD & A
\end{tabular}

With the @ expression in the column specification, the columns will be separated by whatever symbol you like -- in this case, the arrow -- thus aligning that symbol between rows.

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