[Top][All Lists]

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

Re: [Gnu-arch-users] [Patch] Underscores in 'make-archive' e-mail

From: Robin Farine
Subject: Re: [Gnu-arch-users] [Patch] Underscores in 'make-archive' e-mail
Date: Wed, 24 Mar 2004 23:45:45 +0100
User-agent: Mozilla Thunderbird 0.5 (X11/20040306)

address@hidden wrote:

So IMO it's pretty clear that the domain part of an e-mail address *does*
have the restrictions that a DNS domain has.

Ouch, naturally you are correct. Now I also looked at rfc2821 which better describes actual restrictions on Internet e-mail addresses. There are also some MUST and SHOULD restrictions on the local part. Assuming that we can drop the quoted string form and the nested comments, I propose the following python code as approximation of an e-mail address verifier (it prints the regexp which is a bit long to figure here). Also, the domain literal form is not accepted but it does not make much sense in an Arch archive name, right?

Comments welcome.


#! /usr/bin/env python

import re, sys

alnum = "[0-9A-Za-z]"
alnumhyph = "[-0-9A-Za-z]"
label = alnum + "(" + alnumhyph + "*" + alnum + ")?"
domain = label + "(\." + label + ")*"

atext = "[-0-9A-Za-z!#$%&'*+/=?^_`{|}~]"
local = atext + "+" + "(\." + atext + "+" + ")*"
email = "^" + local + "@" + domain + "$"
print email

emailre = re.compile(email)

if emailre.match(sys.argv[1]):
   print "ok"
   print "nope"

reply via email to

[Prev in Thread] Current Thread [Next in Thread]