Regex tester fails with optional group

[gineer01]

Describe the bug

Testing \s([^\s\[]+)(?:\[(\d+)\])?:\s against this input:

Nov 11 21:03:26 abc2 def.sh[1]: 
Nov 11 21:03:26 abc2 def.sh: 

It shows no match.

What happened?

It seems the regex tester fails with the second line for some reason:

• Without the second line, it can match the first line Nov 11 21:03:26 abc2 def.sh[1]: , which is correct.
• With the second line, it shows no match at all (even no match for the first line).

Expected output (try https://regex101.com/ for example): 2 matches (the [1] part is optional in the regex)

System information

Firefox

Where did you encounter the bug?

A self hosted

[sharevb]

Hi @gineer01 and @CorentinTh, fixed in #1391, thanks for your bug report

[sharevb]

Hi, for people interested in up to date version of it-tools, I made kind of a fork here : https://github.com/sharevb/it-tools (https://sharevb-it-tools.vercel.app/ and docker images https://github.com/sharevb/it-tools/pkgs/container/it-tools)

[chrislea]

I have what I think is the same issue, but with what is arguably an easier regex to look at.

The regex:

^api((\.|-)(qa|dev))?\.domain\.com$

should match:

api.domain.dom

but does not.

[sharevb]

Hi @chrislea and @gineer01 , fixed in my fork https://sharevb-it-tools.vercel.app/regex-tester?regex=anything

And for people interested in up to date version of it-tools, I made kind of a fork here : https://github.com/sharevb/it-tools (https://sharevb-it-tools.vercel.app/ and docker images https://github.com/sharevb/it-tools/pkgs/container/it-tools)