[issue34155] email.utils.parseaddr mistakenly parse an email

[Windson Yang]

Windson Yang <wiwindson at outlook.com> added the comment:

I found the issue located in https://github.com/python/cpython/blob/master/Lib/email/_parseaddr.py#L277

elif self.field[self.pos] in '.@':
    # email address is just an addrspec
    # this isn't very efficient since we start over
    self.pos = oldpos
    self.commentlist = oldcl
    addrspec = self.getaddrspec()
    returnlist = [(SPACE.join(self.commentlist), addrspec)]

The parseaddr function runs a for in loop over the input string, when it meets '.@' it will do something. That is why when the input string is 'foo at bar.com@example.com' will return ('', 'foo at bar.com'). One possible solution will be to check the string in the reverse order then we can always get the last '@' in the string.

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nosy: +Windson Yang

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Python tracker <report at bugs.python.org>
<https://bugs.python.org/issue34155>
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