Hello, thanks for taking the time to read my question... So I'm trying to parse some iCal, specifically getting the BYDAY section of a weekly repeating RRULE. I tried the pattern
@days = /BYDAY=([A-Z]+)(?:,([A-Z]+))*;/
on the line
RRULE:FREQ=WEEKLY;BYDAY=TU,TH;UNTIL=20110429T000000;WKST=SU
and it worked fine (days{0} == TU, days{1} == TH). However if I change TU,TH to MO,WE,FR, I only get MO and FR, and if I change it to just TU, then I get TU but also a warning about using uninitialized value days{1}.
My guess is that the * on the nongrouping parentheses returns an undefined or null value if it does not match, and the last match if it matches more than once. Is there a way to do what I want besides knowing that only 5 days exist and cheating?

In reply to Capturing unknown number of matches by awygle

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