Re^2: Regex question - identify which pattern comes first

Replies are listed 'Best First'.
Re^3: Regex question - identify which pattern comes first by LanX (Saint) on May 02, 2026 at 13:28 UTC
> that is an amazingly simple solution! Did you try it? These `(??{ $first = 1; })` won't work because they'll include 1,2 or 3 into the regex. Try `(?{ $first = 1; })`; with a single `?` instead. Cheers Rolf _{(addicted to the Perl Programming Language :) see Wikisyntax for the Monastery} Thus	[reply] [d/l] [select]
Re^4: Regex question - identify which pattern comes first by harangzsolt33 (Curate) on May 02, 2026 at 14:20 UTC
No, the second solution did not work. But the first one does work, and I never thought of doing it that way even though I knew you could capture using the parentheses. I didn't know you can use defined to figure out which one of the patterns was captured. The second solution, I think, requires a more modern Perl interpreter. I use Perl 5.8 mostly. It said unmatched regex --> / something... But it's okay. I'll use the first solution. I think, it's also easier to read.	[reply]
Re^5: Regex question - identify which pattern comes first by LanX (Saint) on May 02, 2026 at 14:43 UTC
No the feature was already present in 5.8 5.8.0/perlre#(?{ code }) I have another (simpler?) solution in mind which was probably only introduced with 5.10+ Update yep! Cheers Rolf _{(addicted to the Perl Programming Language :) see Wikisyntax for the Monastery}	[reply]
Re^6: Regex question - identify which pattern comes first by harangzsolt33 (Curate) on May 05, 2026 at 13:56 UTC
Re^7: Regex question - identify which pattern comes first by Anonymous Monk on May 05, 2026 at 15:18 UTC

Update