seemingly regex non-capturing group is not supported?

[mo-han]

No description provided.

[ayoisaiah]

@mo-han You mean like this?

[mo-han]

you are correct. but i'm still confused by this:

command line:
f2 -f "(.+ (\d{4}-\d\d-\d\d) (\d+)(?:_p\d+) (.+) @.+)" -r "$2 $3 $4 @/$1"

filenames example:

pixiv 2015-03-28 49517590 尻 @ひきとぐ 49517590_p0.jpg
pixiv 2015-03-28 49517590_p0 尻 @ひきとぐ 49517590_p0.jpg

the (?:_p\d+) part mismatch the first one, but it should match both, or not?

(anyway it's probably not issue of f2, but i'm just very confused)

[ayoisaiah]

@mo-han You need a question mark after the (?:_p\d+) part to indicate that its optional:

[mo-han]

I've totally misunderstood this syntax. Thank you!

[ayoisaiah]

Happens to us all :)

Would recommend using https://regex101.com/ to debug your regex. Just make sure to select the Golang variant in the sidebar