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Answer: How do I delete the last instance of a word from a string?

by tye (Sage)
on Oct 30, 2001 at 01:19 UTC ( #121982=categorized answer: print w/replies, xml ) Need Help??

Q&A > strings > How do I delete the last instance of a word from a string? - Answer contributed by tye

Although I prefer the rindex/substr solution, another alternative involves regular expressions with "zero-width negative look-ahead assertions": s/\Q$word\E(?!.*\Q$word\E)//s
or, if you really only want "words": s/\b\Q$word\E\b(?!.*\b\Q$word\E\b)//s

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