需要LaTeX的简单正则表达式 [英] Need simple regex for LaTeX

问题描述

在我的LaTeX文件中，实际上有数千个以下结构的出现:

In my LaTeX files, I have literally thousands of occurrences of the following construct:

$\displaystyle{...math goes here...}$

我想用

\mymath{...math goes here...}

请注意，$消失了，但是花括号仍然保留---如果不是尾随的$，这将是基本的查找和替换.如果我只知道任何正则表达式，我相信它会毫无问题地解决这个问题.我需要做些什么正则表达式?

Note that the $'s disappear, but the curly braces remain---if not for the trailing $, this would be a basic find-and-replace. If only I knew any regex, I'm sure it would handle this with no problem. What's the regex I need to make this happen?

非常感谢.

出现了一些问题，请让我澄清一下

Some issues and questions have arisen, so let me clarify:

1. 是的，$\displaystyle{ ... }$可以在同一行上出现多次.
2. 否，不能出现嵌套的}$(例如$\displaystyle{...{more math}$...}$).我的意思是，我想如果将它放在\mbox之类的东西中也是可以的，但是我无法想象为什么有人会在$\displaystlye{}$构造中这样做，目的是在文本内联显示数学.无论如何，这不是我曾经做过或可能要做的事情.
3. 我尝试使用perl建议，但是尽管shell没有提出异议，但文件仍然不受影响.
4. 我尝试使用sed建议，但是shell反对('"附近的意外令牌".我以前从未使用过sed(并且"man sed"很钝)，但是我的操作是:导航到一个包含.tex文件并键入"sed s/\$\\displaystyle({[^}]+})\$/\\mymath\1/g *.tex"的目录.没有运气.如何使用sed执行我想要的操作?

1. Yes, $\displaystyle{ ... }$ can occur multiple times on the same line.
2. No, nested }$'s (such as $\displaystyle{...{more math}$...}$) cannot occur. I mean, I suppose it could if you put it in an \mbox or something, but I can't imagine why anyone would ever do that inside a $\displaystlye{}$ construct, the purpose of which is to display math inline with text. At any rate, it's not something I've ever done or am likely to do.
3. I tried using the perl suggestion, but while the shell raised no objections, the files remained unaffected.
4. I tried using the sed suggestion, but the shell objected to an "unexpected token near `('". I've never used sed before (and "man sed" was obtuse), but here's what I did: navigated to a directory containing .tex files and typed "sed s/\$\\displaystyle({[^}]+})\$/\\mymath\1/g *.tex". No luck. How do I use sed to do what I want?

再次非常感谢您提供的所有帮助.

Again, many many thanks for all offered help.

推荐答案

sed:

s/\$\\displaystyle({[^}]+})\$/\\mymath\1/g

这篇关于需要LaTeX的简单正则表达式的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！