I have always been under the impression (or perhaps illusion) that \1 should be used within the regular expression and $1 outside of it.

That is correct. But you used \1 in the replacement part of a substitution, which is certainly outside the regex.

Greetings,
-jo

$gryYup$d0ylprbpriprrYpkJl2xyl~rzg??P~5lp2hyl0p$

In reply to Re: Capture Groups by jo37
in thread Capture Groups by Bod

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