Terry J. Reedy <tjre...@udel.edu> added the comment: Python internally uses an encoding system that represents all unicode chars efficiently, including O(1) indexing. It is not utf-8, which does not do O(1) indexing.
There is already an issue about upgrading (separately) the Python Windows and macOS installers to install tcl/tk 8.6.9. With the currrent 8.6.9 and probably earlier, and since an important tkinter patch last fall for #13153, a tkinter/tk text widget will display astral characters that the font in use can produce. For example, in 3.9.0, I see the TV set printed in IDLE >>> '\U0001f4bb' '💻' but not in the Windows Console Python REPL, which shows 'box space box box'. However, astral characters discombobutate editing (#39126),at least on Windows, they are counted as 2 or 4 chars. The difference between behavior before and after Serhiy's patch and between display and editing likely explains different reports on SO. ---------- nosy: +terry.reedy resolution: -> third party stage: -> resolved status: open -> closed _______________________________________ Python tracker <rep...@bugs.python.org> <https://bugs.python.org/issue41212> _______________________________________ _______________________________________________ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
