pdb `l` and `ll` commands print raw ansi codes for every new line

[saucoide]

Bug report

Bug description:

l and ll in pdb after 09968dd results in output with ^J trailing everywhere

➜ ./python.exe debug.py
1
> /Users/sauco.navarro/projects/nonwork/cpython/debug.py(5)main()
-> breakpoint()
(Pdb) l
  1     from _pyrepl import utils^J
  2     ^J
  3     ^J
  4     def main():^J
  5  ->     breakpoint()^J
  6         for i in range(10):^J
  7             print(i)^J
  8     ^J
  9     main()^J
[EOF]
(Pdb) 

CPython versions tested on:

3.15

Operating systems tested on:

macOS

Linked PRs

• gh-153902: strip trailing newlines when displaying source in pdb #153905

[StanFromIreland]

For reference, here's how Hugo fixed this in a PR for a different thing: e11465b