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Strings do too many things (buttondown.email)

submitted 7 months ago by [email protected] to c/[email protected]

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[–] [email protected] 10 points 7 months ago (1 children)

Which ones? In RFC 5322 every address contains an addr-spec at some point, which in turn must include an @. RFC 6854 does not seem to change this. Or did I misread something?

[–] [email protected] 1 points 7 months ago* (last edited 7 months ago) (1 children)

EDIT: I'M DUMB I THOUGHT YOU MEANT A LITERAL "." , that regex is indeed correct.

Original:

This is a valid address: user.name@[IPv6:2001:db8:1ff::a0b:dbd0]

Relevant spec: https://www.rfc-editor.org/rfc/rfc5321#section-4.1.3

And you all doubted me... :P

Edit: Wait, I also don't think local-part even needs a "." in it? [email protected] should be valid as well.

[–] [email protected] 5 points 7 months ago* (last edited 7 months ago)

And it's matched by .+@.+ as it contains an @.

Remember, we're taking about regular expressions here so .+ means "a sequence of one or more arbitrary characters". It does not imply that an actual dot is present.

(And I overlooked the edit. Oops.)