My users insert sequences like

________________________
************************
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♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥♥

to format documents (dont ask me about my users!). And it looks bad when displaying snippets. How can I remove repetitions of any characters? I can add individual filters, but it will be a constant cat and mouse game.

Can a regular expression filter these?

regex
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