Matthew Barnett <[email protected]> added the comment:
It can be shortened to this:
buffer = b"a" * 8191 + b"\\r\\n"
with open("bug_csv.csv", "wb") as f:
f.write(buffer)
with open("bug_csv.csv", encoding="unicode_escape", newline="") as f:
f.readline()
To me it looks like it's reading in blocks of 8K and then decoding them, but
it isn't correctly handling an escape sequence that happens to cross a block
boundary.
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nosy: +mrabarnett
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<https://bugs.python.org/issue45461>
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