[Dovecot] . (dot) in maildir folder names

[Timo Sirainen]

On 25.5.2013, at 2.30, Christoph Anton Mitterer <calestyo at scientia.net> wrote:

> On Sat, 2013-05-25 at 02:12 +0300, Timo Sirainen wrote:
>> IMAP protocol requires that one character is reserved for being
>> hierarchy separator. There's no way around that. But with listescape
>> plugin you can use any other character.
> Okay... than IMAP really sucks in that matter ^^... why not allowing it
> to be used quoted ... weird...
> 
> IIRC, clients can find out that character via the LIST command, right?
> So there should be no need for them to block anything else but that
> specific character (per server).

Yeah.

>> , but it can be something else visible to IMAP clients, which allows
>> using '.' in IMAP protocol but not in filesystem unescaped.
> 
> but that basically also means that the plugins will never encode
> characters but . and / (okay and that ~ case, which AFAIU wouldn't be
> strictly necessary), right?



> 
> It will encode "/" because it can't be used in the POSIX filenames.
> And it will encode "." only when LAYOUT=fs is _not_ used.
> Other Unicode chars are already encoded by IMAP via UTF7 and can go
> straight into the FS.

Right.

> And the virtual separator cannot be used, regardless what one does...
> Is this just an IMAP issue or also a POP issue?
> 
> And how are other unicode chars encoded in POP? I ask cause then I'd
> update the wiki a bit.

POP3 has no folders at all.