Re: history of using a comment for display-name?
"Maynard Kang" <maynard@pobox.org.sg> Mon, 12 March 2001 16:26 UTC
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From: Maynard Kang <maynard@pobox.org.sg>
To: Keith Moore <moore@cs.utk.edu>
Cc: drums@cs.utk.edu
References: <200103121330.IAA12426@astro.cs.utk.edu>
Subject: Re: history of using a comment for display-name?
Date: Mon, 12 Mar 2001 08:23:05 -0800
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> nope. that's not what section 3.4.3 means. So what does it exactly mean then? Perhaps Dave would be the better person to answer this. The way I interpret it is that comments should be shown when the message is being read, but should not be used when the message is being transmitted. > > in practice, comments were the "preferred form" of representing names > for many years after RFC 822 was published. this was due to several > reasons: > > - there were rumors of old mailers still in use that couldn't handle a > phrase before the address > > - Usenet (RFC 1036) used comments, didn't support phrase, and gateways > between mail and news were fairly common. > > - many mailers could be configured to automatically add a name as a > phrase but would not quote that name if it contained special > characters (most notably ".") - thus mailers configured to use > phrase for name developed a reputation for producing badly > formed messages. > > - people didn't update their old sendmail.cf files, thus use of > comments for names remained quite common and thus seemed "normal". I guess as a developer of e-mail software I find it mildly irritating that I've always had to write code to support both the "phrase route-addr" and "addr-spec (comments)" formats in e-mail headers. You can imagine the problem getting worse when dealing with non-ASCII in headers.. Some non-compliant mail software just insert double-byte characters liberally into the phrase component (and to make matters worse, quote the string, and escape out other quotes within the string which may be part of a double-byte character!) This might be flogging a dead horse, but I think we should state, in any update to RFC 822, that the "phrase route-addr" format MUST be supported and that comments in addr-spec are NOT RECOMMENDED. It seems to me that the problems you have described above are more or less legacy problems that aren't so significant nowadays. Then again, I cannot be sure. Perhaps the rest of the working group has additional comments. maynard
- history of using a comment for display-name? Sam Roberts
- Re: history of using a comment for display-name? Dave Crocker
- Re: history of using a comment for display-name? Maynard Kang
- Re: history of using a comment for display-name? Keith Moore
- Re: history of using a comment for display-name? Robert Elz
- Re: history of using a comment for display-name? Maynard Kang
- Re: history of using a comment for display-name? Keith Moore
- Re: history of using a comment for display-name? Maynard Kang
- RE: history of using a comment for display-name? Larry Osterman
- Re: history of using a comment for display-name? Sam Roberts
- Re: history of using a comment for display-name? Keith Moore
- Re: history of using a comment for display-name? Michael Richardson
- Re: history of using a comment for display-name? Larry Campbell
- Re: history of using a comment for display-name? Laurence Lundblade
- Re: history of using a comment for display-name? Kai Henningsen