>>>>> "GvR" == Guido van Rossum <guido@python.org> writes: GvR> Another note for Aahz: when it comes to scanning data that's GvR> not really a programming language, e.g. email messages, the GvR> words parsing, scanning, lexing and tokenizing are often used GvR> pretty much interchangeably. True, although even stuff like email messages are defined by a formal grammar, i.e. RFC 2822. email.Generator of course doesn't strictly use that grammar because it's trying to allow a much greater leniency in its input than a language compiler would. But note that approaches like Emacs's mail-extr.el package do in fact try to do more strict parsing based on the grammar. -Barry
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