javascript - Matching multiple optional characters depending on each other -

I want to match all valid prefixes with the other characters with the option , so that

sub part.

Options / ABC / DF

• Match _{ABC / DEF Options .}
• The subt / abc / def match does not match or only matches the sub section, not t .

My current reggae is / ^ s (u (b (s (t (u (te?)?))?)?)?)?)?)? )?)? / , which works, though it seems a little verbose.

Is there any better (less, verbose) to do this?

You can use two-step reggae

1. Use the simple pattern to find the first word of the subject ^ (\ w +)
2. Use the word extracted from step 1 as if your regex pattern is the word option ^ subs against