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I have a string that could be formatted in the following ways:

user-style-1 user-style-1-bold user-style-1-italic user-style-1-bold-italic

I'm attempting to capture (respectively):

nothing (does not match) -bold -italic -bold and -italic (as separate captures)

This is my RegEx: ^user-style-\d+((-.+?)+?)$ (also potentially ^user-style-\d+(?:(-.+?)+?)$ since I don't care about the full capture, only the individual pieces of it). It captures:

nothing -bold -italic -bold-italic and -italic

or (for the alternate)

nothing -bold -italic -italic

I can't quite figure out how to get the repeating capture group to capture all individual instances rather than the entire thing and just the last instance or just the last instance.

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  • Ah that does, in that it’s not possible to do what I want. Thanks! Commented Dec 5, 2019 at 21:38

2 Answers 2

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Take a look at something like this:

^user-style-\d+(-\w+)(-\w+)?$

Regex Demo

You will need a group per pattern that you want to capture. Refer to link posted by ggorlen and the accepted answer for that question for the reasoning.

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4 Comments

Just read that, unfortunately I was trying to have it be dynamic, guess I’ll need an alternate solution.
Just capture the tail after user-style-\d+ and match a second time with that.
[...s.matchAll(/^user-style-\d+(\-[\w-]+)$/gm)].map(e => e.pop().match(/-\w+/g))
@ggorlen that's perfect, thanks!
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Try this RegEx: ^user-style-1(-bold)?(-italic)?$ it should capture all 4 cases

link: https://regex101.com/r/p8NbIv/1

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