Type the following in the REPL:

>>> def foo():...     x = 1...     y = 2...     z = 3...>>> def bar():...     return 42...

Now press up arrow 3 times to go to thefoo function. The REPL shows:

>>> def bar():...     x = 1...     y = 2...     z = 3

which is a weird mix between the two entries.

I have bisected this to32a0fab

Linked PRs

• gh-121499: Fix multi-line history rendering in the REPL #121531
• [3.13] gh-121499: Fix multi-line history rendering in the REPL (GH-121531) #121679