Removing duplicate strings/words(not lines) using

Question

I would like to know a way to remove duplicate words or strings in a text file(not lines) using notepad++ regex find tool.

I only saw ways to remove duplicate lines using TextFx and that is not what i am looking for.

Example -

123 / 789 123 / 321

Removing 123 would result in

123 / 789 / 321

Answer 1

I'm not familiar with Notepad++, but assuming it uses standard syntax, replace

\b(\w+)\b([\w\W]*)\b\1\b

with

$1$2