[issue40452] Tkinter/IDLE: preserve clipboard on closure

[Tal Einat]

Tal Einat <taleinat+python at gmail.com> added the comment:

Note that Tcl/Tk once had exactly the same issue on Windows, and they added specific code to "render" to the clipboard upon exit if the current app is the "clipboard owner".

https://core.tcl-lang.org/tk/tktview/732662

This was fixed here:

https://core.tcl-lang.org/tk/tktview/939389

Note that Tcl/Tk has separate OS-specific implementations of "TkClipCleanup" for Windows, macOS and "Unix".

https://github.com/tcltk/tk/search?q=TkClipCleanup

This only appears to be called by TkCloseDisplay, which is turn is never called elsewhere in the Tk codebase. tkinter never appears to call either of those functions. Perhaps this is the core issue?

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