[issue43070] Control keys stop working after pressing Ctrl-C Escape Enter

[Steven D'Aprano]

Steven D'Aprano <steve+python at pearwood.info> added the comment:

Ctrl-C is a red-herring here. Esc-Enter alone is sufficient to switch control processing.

Tested in Python 2.7 and 3.9 using xfce4-terminal in Fedora:

1. Ctrl-L clears the terminal window;
2. Type Esc-Enter;
3. Ctrl-L now inserts an actual ^L (chr(12) linefeed) instead of being captured by the terminal and clearing the screen.

I am 80% sure this is a *terminal feature* not a Python bug, to allow you to insert control characters into the command line, but I can't reproduce it in bash or find a way to revert back to normal processing.

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nosy: +steven.daprano

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Python tracker <report at bugs.python.org>
<https://bugs.python.org/issue43070>
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