如何在VIM中使用sed将== string更改为eq（string）？

Question

I can replace == with eq( but I am unsure how to grab the string after == and put it back in the replacement with a ) at the end. Does anyone have a solution?

I was using :%s/== /eq(/g but I need to get the ) at the end of the existing string.

I tried :%s/== .*/eq(&)/g but when I ran it I realized that is also brought the "== " into my replacement string that I wanted to get rid of.

I guess I was hoping there was a way to capture an unknown string and put that exact string back into the replacement line. something like :%s/== .*/eq(.*)/g where the .* is the unknown string. The first part works and grabs the string, but not sure how to put it back in on the replacement line. Especially because I do not know how many characters/words the string may be.

SOLUTION: :%s/== \\(.*\\)/eq(\\1)/

Answer 1

You need to capture the text

:%s/== \(.*\)/eq(\1)/

You don't need the g flag, since the "string" extends to the end of the line, hence there will only ever be one match.

Answer 2

使用反向引用应该有效：

:%s/== \(.*\)/eq(\1)/g