QRegExp replece issue

mbnoimi

Hi,

I want separate the following string by "-" but unfortunately QRegExp doesn't match it

rg

(.*) - (.....) (.*)

replace

\1 - \2 - \3

string

KÜÇÜK OTOBÜS TAYO - S01E12 GEL ARKADAŞ OLALIM

I expect to get

KÜÇÜK OTOBÜS TAYO - S01E12 - GEL ARKADAŞ OLALIM

Paul Colby

Hi @mbnoimi,

The problem is that you don't have enough dots in the inner group - you have 5 dots, which matches 5 characters, but the input has 6 characters S01E12.

# Doesn't work...
paul@paul-XPS-13-9343:~$ echo 'KÜÇÜK OTOBÜS TAYO - S01E12 GEL ARKADAŞ OLALIM' | sed -re 's/(.*) - (.....) (.*)/\1 - \2 - \3/'
KÜÇÜK OTOBÜS TAYO - S01E12 GEL ARKADAŞ OLALIM
# Add another '.' and all is good :)
paul@paul-XPS-13-9343:~$ echo 'KÜÇÜK OTOBÜS TAYO - S01E12 GEL ARKADAŞ OLALIM' | sed -re 's/(.*) - (......) (.*)/\1 - \2 - \3/'
KÜÇÜK OTOBÜS TAYO - S01E12 - GEL ARKADAŞ OLALIM

Cheers.

mbnoimi

@Paul-Colby said in QRegExp replece issue:

The problem is that you don't have enough dots in the inner group - you have 5 dots, which matches 5 characters, but the input has 6 characters S01E12.

Indeed! Thanks

VRonin

side notes:

if you are using Qt5, do not use QRegExp, use QRegularExpression
.{6} is safer and faster than ......
be careful with the greediness of * operators here

mbnoimi

@VRonin Thanks for advice,