in reply to Re^4: How to convert a string with regex to a string with a fixed length?
in thread How to convert a string with regex to a string with a fixed length?

It's a substitution, which contains a regex.

As you've been told multiple times in the chatterbox, a regex can't change a string, it just either matches or it does not. So your project to modify a string with a regex is pretty much doomed.

I suspect that it's either not possible in your setup, or you missed some small but important detail in the documentation.

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