正则表达式可选地提取两个字符之间的字符

Question

I have the following string thisIs/My-7777-Any-other-text it also is possible for the following thisIs/My-7777

I am looking to extract My-777 in both scenarios using regex. So essentially I am looking to extract everything between the first forward flash and the second hyphen (Second hyphen may not exist). I tried the following regex which wasn't quite right

(?<=\/)(.*)(?=-)

Answer 1

You could use a capture group

^[^\/]*\/([^-]*-[^-]*)

• ^ Start of string
• [^\/]*\/
• ( Capture group
  • [^-]*-[^-]* Match a - between optional chars that are not -
• ) Close capture group

regex demo

Without an anchor, and not allowing / before and after -

[^\/]*\/([^-\/]*-[^-\/]*)

Regex demo

Answer 2

If we take into account the structure of your current input strings, you can use

(?<=\/)[^-]+-[^-]+

See the regex demo .

If your strings are more complex and look like thisIs/My-7777/more-text-here , and you actually want to match from the first / , then you may use

^[^\/]+\/\K[^\/-]+-[^\/-]+       ## PHP, PCRE, Boost (Notepad++), Onigmo (Ruby)
(?<=^[^\/]+\/)[^\/-]+-[^\/-]+  ## JS (except IE & Safari), .NET, Python PyPi regex)

See this regex demo or this regex demo . Note \n is added in the demo since the input is a single multiline string, in real life input, if a newline char is expected, use it in each negated character class to keep matching on the one line.

Answer 3

This one is working for me, Try it with case insensitive ticked

Find what: .*?/|-any.*
Replace with: blank

Output should be ↠↠ My-7777