正则表达式匹配字符串中的所有斜杠，如果一个单词出现在字符串中的任何位置

Question

I am trying to match all the slashes / in a string but only if the string starts with "..

This Regex only matches the first slash

(?<=['|"]\.\.)(?<=.)*?/

Should match

"../a/b/c/test.aspx"
"../a/test.aspx"

Should Not

"/a/b/c/test.aspx"
../a/b/c/test.aspx

Any Ideas?

Answer 1

Notepad++ uses PCRE regex engine, hence you can use this regex:

(?:^"\.\.|(?!^)\G)[^/\n]*\K/

RegEx Demo

RegEx Details:

• (?: : Start non-capture group
  • ^"\.\. : Match ".. at the start
  • | : OR
  • (?!^)\G : \G asserts position at the end of the previous match or the start of the string for the first match. (?!^) makes sure we're not at the start position.
• ) : End non-capture group
• [^/]* : Match 0 or more of any characters that is not /
• \K : Reset all the matched info
• / : Match a /