wonderful! Wish I could ++ your solution repeatedly! This writeup led to a "Eureka!" moment; the kind of haze-clearing that makes PM so valuable to beginners like me.

request: please add to our understanding by commenting lines of regex, esp that part of line8 reading

(?=[A-Z][a-z])

(grouped but non-capture??)

and in line13,

( [^\[]+ )

which, as I read Owl (pocket ref), means capture one-or-more of a class including not-an-open_BRKT and close_BRKT ...which doesn't make sense to me, and -- more importantly, doesn't seem to WORK that way.

In reply to Re^2: parsing a bibliography by ww
in thread parsing a bibliography by patrickrock

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