正则表达式：保持在同一行中多次发现相同模式

Question

Is it possible with notepad++ (or maybe from linux bash shell) to create multiple lines from a pattern found , as many times as the pattern is found? The pattern in this case is val=[0-9]+

For example:

input line: other stuff,val=3234,val=123,val=678

output lines:

val=3234
val=123
val=678

Answer 1

Press Ctrl + H

Enable Regular Expression.

Regex explanation: ,(val=\\d+) - match comma and then val=[0-9] recurring, with val=\\d+ captured as Group 1 . In Notepad++, you can access Group 1 contents as \\1 .

So replace your regex result with newline ( \\n ) + Group 1 contents ( \\1 ).

Result:

other stuff
val=3234
val=123
val=678

If you want other stuff to be removed, then you first need to capture it via following regex: ^[^,]+ and Replace with nothing, and then run regex ,(val=\\d+) and replace with \\1\\n . Then result will be:

val=3234
val=123
val=678

Answer 2

You can slightly improve on @vs97 answer by using the regex

[^,]*,(val=\d+)

and replacing with \\1\\n . This will deal with getting rid of the 'other stuff` without requiring a separate replace operation.

Demo on regex101