When running any app using click.prompt on linux, something weird happens with backspace.

Recording

This screen recording shows 2 letters being removed when I hit backspace once, and the prompt being deleted when I backspace the entire line.

(asciinema link)

The returned input is also different from the text shown on screen.

Environment:

• Python version: 3.13.3
• Click version: 8.2.1

Cause:

termui contains a workaround for windows where it prints a readline prompt itself. On linux, this confuses readline so things like backspace/ctrl-backspace and line wrapping don't work correctly.

This can be fixed by letting readline handling the prompt on linux: #2969