Re: Regex: remove non-adjacent duplicate hashtags (updated)

by haukex (Archbishop)

on Jul 23, 2022 at 13:10 UTC ( [id://11145666]=note: print w/replies, xml )

Need Help??

You need to use \1 instead of $1, see perlre.

You may also want to move the \s? out of the capture group.

Update: Plus, what LanX said about using a lookahead!

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Re^2: Regex: remove non-adjacent duplicate hashtags by element22 (Novice) on Jul 23, 2022 at 13:24 UTC
Thanks, it works. Here's my more elaborated version: `$tags=~s/(#\S{2,}\b)(.\s?)(\1)(\s?.)/$3$2$4/g;`	[reply] [d/l]

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