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

从 Windows 上 IDLE 编辑器的 tkinter 事件绑定入手，使用中文输入法输入 r、t 和 p 后按 Enter，以复现该行为。将 event.char 与 event.keysym、keycode 和 keysym_num 进行比较，并查看关联的 PR gh-125352。当这些输入不再意外触发 F3、F5 或 F1 命令时，即表示完成。