As the examples below show, absent the m modifier, '$' does not match an internal new line, but it is perfectly happy matching a final newline after an internal newline:

Therein may lie your problem.   A newline is a character and  $ is a zero-width assertion which will never match a character.    :-)

In reply to Re^3: When exactly do Perl regex's require a full match on a string? by jwkrahn
in thread When exactly do Perl regex's require a full match on a string? by ELISHEVA

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