Find repeated pattern in a string of characters using R

Question

I have a large text that contains expressions such as: \"aaaahahahahaha that was a good joke\". after processing, I want the \"aaaaahahahaha\" to

Answer 1

\b(\S+?)\1\S*\b

Use this.See demo.

https://regex101.com/r/sJ9gM7/46

For r use \\b(\\S+?)\\1\\S*\\b with perl=TRUE option.