在Vim中的正则表达式中将句点添加到匹配的模式中

Question

I'm trying to replace

underline{someword}

with

underline{someword.}

in Vim.

I've tried

:%s/underline{\w*}/underline{$1\.}/g

but it changes the matched patterns to

underline{$1.}

Why? How do I fix this?

Answer 1

您忘记了捕获小组

:%s/underline{\(\w*\)}/underline{\1\.}/g

Answer 2

You can use grouping:

:%s/\(underline{\w*\)}/\1\.}/g

Here \\(...\\) is used for grouping the match.

Answer 3

使用经常被低估的\\zs和\\ze ：

:%s/\munderline{\w*\zs\ze}/./g