tkinter: Unexpected behavior caused by Chinese input method

Bug report

Bug description:

Entering "r", "t" or "p" in the Chinese input method and press Enter in the editor will cause IDLE to behave unexpectedly.

• "r": Equivalent to pressing "F3" (will excute command "Find Selection")
• "t": Equivalent to pressing "F5" (will excute command "Run Module")
• "p": Equivalent to pressing "F1" (will open Python docs link)

There may be other similar situations, and I will list three of them here. The input method I used for my test is native to the Windows operating system.

I'm not sure if this problem is caused by the input method or the tkinter event binding, maybe it's not an idle issue, but a tkinter issue. If this issue is not resolved, it will greatly affect the experience of using input methods in IDLE.

The following is a gif demonstration that reproduces the issue:

The event when this behavior is triggered and some of its properties are as follows:

It is clear that this is not the expected behavior. event.keysym does not match event.char.

CPython versions tested on:

3.13

Operating systems tested on:

Windows

Linked PRs

• gh-125352

Inizia con i binding degli eventi tkinter dell’editor IDLE su Windows e riproduci il comportamento usando il metodo di input cinese con r, t e p seguiti da Enter. Confronta event.char con event.keysym, keycode e keysym_num e analizza la PR collegata gh-125352. Il lavoro è completato quando questi input non attivano più inaspettatamente i comandi F3, F5 o F1.