in reply to Re^6: How we can separate a backref from a digit?
in thread How we can separate a backref from a digit?

That optimization came with 5.10.

That explains why I couldn't find it. I was looking in the wrong place.

I guess that this is another of those features--like defined-OR--that was discussed for a long time prior to actually making it into a release.

  • Comment on Re^7: How we can separate a backref from a digit?

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