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Additionally, as a prerequisite for smart-case matching, ranges in the parsed chatacter class are now built to be independent of the current case-sensitivity modifiers.
Add new regex modifier `(?c)` that enables smart-case matching.
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Adds new regex modifier
(?c)to enable smart-case matching.In this mode, case-insensitive matching is used unless there is an uppercase character present in the pattern; otherwise case-insensitive matching applies (e.g.
A,[A-Z],\QA\E,\x41count as an uppercase).Fixes #4856 and #5320.