Match.expand doesn't document replacement of group 0

[Stevoisiak]

Documentation

The documentation for Match.expand() does not specify that you can use a named backreference to group 0 (\g<0>) to reference the entire matching string.

Note that unlike Match.group(), a numeric backreference to group 0 (\0) will not be replaced. This inconsistent behavior has lead to some confusion.

Linked PRs

• (outdated) gh-101699: Explain using Match.expand with \g<0> #101475
• Ignore #101700
• gh-101699: Explain using Match.expand with \g<0> #101701
• [3.12] gh-101699: Explain using Match.expand with \g<0> (GH-101701) #115583
• [3.11] gh-101699: Explain using Match.expand with \g<0> (GH-101701) #115584