Got stuck while using regular expression in notepad++

Question

I have try try use notepad++ for separate the character using comma, after 4 character. but the output is not as expected.

output got:‭‭11,1111,1011,0011,1110,1111,1111,1111,11‬

expected output:‭‭1111,1110,1100,1111,1011,1111,1111,1111‬

I have attached an image.

enter image description here

Does this answer your question? [Insert commas into number string](https://stackoverflow.com/questions/721304/insert-commas-into-number-string) — Tim Biegeleisen, Mar 21 '21 at 05:38
What about the input? Has '1' been a meta character in reg' exp's, that you write "\1" ? — Sam Ginrich, Mar 21 '21 at 08:27

score 0 · Accepted Answer · answered Mar 21 '21 at 10:33

Ctrl+H
Find what: (?:^|\G)....\K
Replace with: ,
CHECK Wrap around
CHECK Regular expression
UNCHECK . matches newline
Replace all

Explanation:

(?:^|\G)    # non capture group, beginning of lien OR restart from last match position
....        # 4 any character but newline
\K          # forget all we have seen until this position

Screenshot (before):

Screenshot (after):

Got stuck while using regular expression in notepad++

1 Answers1