gh-73746: Add note on different Turtle fill behavior depending on platform

[slateny]

#73746

https://docs.python.org/3/library/turtle.html#introduction
https://docs.python.org/3/library/turtle.html#filling

Couldn't quite find the appropriate location to update docs for tkinter so left that alone for now

(on windows)

[Akuli]

This seems to be a bug in Tk. I created https://core.tcl-lang.org/tk/tktview/f6e4d4ca304e9de13922d3a53adc65913bce6d14.

[terryjreedy]

I have the impression that the fill difference in inherent in the X versus Windows graphics systems, but I don't know how I got such. I found no mention in the tk canvas doc https://www.tcl.tk/man/tcl8.6/TkCmd/canvas.html. The tk docs does mention some major OS dependencies, and I would expect this one to be included if real. Thank you for the tcl issue.

[slateny]

I checked in the issue and it appears to be resolved as fixed - I'm not too certain how it works, but to update does it mean tk would need to be updated on the OS, or Python grabs it automatically on a next patch or similar?

[terryjreedy]

@serhiy-storchaka Can you answer Stanley's question?

[serhiy-storchaka]

First, they should release a new bugfix version of Tcl/Tk. Then we will update version shipped with Python on Windows and macOS (Python uses system Tcl/Tk on Linux). The last bugfix release, 8.6.12, was at Nov 5, 2021.

[slateny]

Sounds good - I'll update the issue with your comment and close this, as it doesn't seem like the right way to resolve it.