MBOX-Line: From MRC at CAC.Washington.EDU  Fri Mar 30 15:19:02 2007
To: imap-protocol@u.washington.edu
From: Mark Crispin <MRC@CAC.Washington.EDU>
Date: Fri Jun  8 12:34:39 2018
Subject: [Imap-protocol] LIST response with trailing hierarchy
 character
In-Reply-To: <460D8950.9000703@sun.com>
References: <460D8950.9000703@sun.com>
Message-ID: <alpine.WNT.0.98.0703301514370.5420@Tomobiki-Cho.CAC.Washington.EDU>

On Fri, 30 Mar 2007, Bill Shannon wrote:
> Is the last untagged LIST response below valid?
> A2 LIST "" "%"
>[snip]
> * LIST (\Noselect) "/" "Public Folders/"
> A2 OK LIST completed.

I would say "no".

UW imapd can return such a LIST result, but only from a pattern ending 
with "/%".  For example:

 	tag list "" barter/%
 	* LIST (\NoSelect) "/" barter/
 	* LIST (\NoInferiors \Marked) "/" barter/fred
 	* LIST (\NoInferiors \Marked) "/" barter/joe
 	* LIST (\NoInferiors \UnMarked) "/" barter/pete
 	tag OK LIST completed

This is because % is defined to match zero or more characters.

My guess is that the author of server that did the bad thing did empirical 
testing of UW imapd and misinterpreted what s/he saw.

-- Mark --

http://staff.washington.edu/mrc
Science does not emerge from voting, party politics, or public debate.
Si vis pacem, para bellum.

