Benjamin Peterson <benja...@python.org> added the comment:
I think ast.c is in the right here and there are two complementary bugs in
caret printing and the parser.
print_error_text does this:
while (--offset > 0)
PyFile_WriteString(" ", f);
which is off-by-one if offset is zero-indexed (which it should be IMO).
The parser has an off-by-one error in the other direction. When it reports an
error, it reports the offset of the tokenizer's "cur" buffer. This is generally
advanced past the location that actually resulted in a parser error. I believe
the parser should be fixed to report the error offset as the offset of the
start of the token that caused the error.
----------
nosy: +benjamin.peterson -eric.smith, xtreak
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Python tracker <rep...@bugs.python.org>
<https://bugs.python.org/issue34683>
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