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

從 Windows 上 IDLE 編輯器的 tkinter 事件繫結開始，使用中文輸入法輸入 r、t 和 p 後按 Enter，以重現該行為。將 event.char 與 event.keysym、keycode 和 keysym_num 進行比較，並檢視相關的 PR gh-125352。當這些輸入不再意外觸發 F3、F5 或 F1 命令時，即表示完成。