I'm not sure about this
I read it as doublequote which is not preceded by backslash
But what about an escaped backslash \\" or two \\\\" ... ?
I'd rather try something like (Untested pseudocode)
$escaped = qr/\\./;
(['"]) # start
(?: $escaped | [^\1] )* # inside
\1 # end, probably \g-1 better
NB: I didn't cover the case of unclosed quotes, which is unclear anyway.
tested - fails - good night! :)
see Re: solution wanted for break-on-spaces (w/specifics) for "working" example
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