Bug report

Bug description:

HittingCtrl+U should clear the line but this is badly handled whenecho_char is given:

>>>getpass.getpass()Password:'bar'>>>getpass.getpass(echo_char="*")Password:*******'foo\x15bar'

See#138514 (comment).

This issue stems from the fact that we switch to non-canonical mode (https://www.man7.org/linux/man-pages/man3/termios.3.html). The rationale is that in canonical mode, we only have a line-by-line feedback (so we would see the characters only when we hit ENTER, which is not really useful...)

CPython versions tested on:

CPython main branch

Operating systems tested on:

Linux

Linked PRs

• gh-138577: Mention limitations ofgetpass.getpass(echo_char=...) #138677
• [3.14] gh-138577: Mention Unix-specific limitations ofgetpass.getpass(echo_char=...) (GH-138677) #138696
• gh-138577: Fix keyboard shortcuts in getpass with echo_char #141597