On Tue, 30 Sep 2008, Ken Murchison wrote:
I started wondering what other special characters we might want to allow.
The original authors were more restrictive with GOODCHARS than the RFC.
AFAICT the following characters are permitted by RFC 3501 but aren't included
in GOODCHARS
! # $ & ' ; < > ? [ ^ ` } |
We have used:
#define GOODCHARS
"\\\" #$%'()*+,-.0123456789:;<=>[EMAIL
PROTECTED]"[]_`abcdefghijklmnopqrstuvwxyz{|}~"
for a number of years now without any obvious problems. This list was
taken from someone's suggestion on info-cyrus at the time.
For what it is worth, UW imapd allows '%' and '*' in mailbox names, which
is why they are on the list above. Those are the two characters I am most
dubious about. Hardly anyone uses '%'. '*' seems quite popular as a trick
to push mailboxes up to the top of an alphabetically sorted list.
! and ^ have special meaning to Cyrus, so we may not want to add these to
GOODCHARS.
I had to remove '!' from the list above when we moved from 2.1.x.
& and ? might conflict with modified UTF-7 encoding.
& shouldn't be allowed without checking for a valid modified UTF-7
sequence. What is the problem with '?'.
--
David Carter Email: [EMAIL PROTECTED]
University Computing Service, Phone: (01223) 334502
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