Serhiy Storchaka <[email protected]> added the comment:
I generated a script for testing all characters:
with open('withtest.sh', 'w', errors='surrogatepass') as f:
for i in range(0x100, 0x110000): print(f"echo 'label .l -text \"{chr(i)}\";
exit' | wish 2>/dev/null && echo OK '\\U{i:08x}' {chr(i)!r} || echo FAIL
'\\U{i:08x}' {chr(i)!r}", file=f)
It takes a time. It tested around 20% of all characters for 6-7 hours. And it
seems that all failed characters are colored emojies and all passed characters
are non-colored. Seems it is related either to the font that provides colored
emojies, or to the mechanism that interprets such fonts, or Tk just cannot
correctly handle the output when such fonts are used (maybe reserve too small
buffer or cannot interpret result code).
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<https://bugs.python.org/issue42225>
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