Anchoring at the end of the string only matches if there's an actual match at the end of the string. But the last match doesn't imply it's at the end of the string. For instance, in the string below, there are two matches for /a.b/, on of them the last one, but none for /a.b\z/. 
"123 a!b 456 a?b 789"

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In reply to Re^3: Matching Regular expression at EOF by JavaFan
in thread Matching Regular expression at EOF by krish28

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