nnimap/Gcc header nit - groups with spaces

["Steven E. Harris" <steven.harris@tenzing.com>]

I recently started using Gnus to read mail on an MS Exchange Server
using IMAP (nnimap). By default, Exchange (or maybe it's Outlook)
establishes a folder called "Sent Items" and uses it as the default
folder for archiving mail. When sending a work-related message out, I
often tell Gnus to save a copy in this "Sent Items" folder by way of
the Gcc header:

> Gcc: nnimap+tenzing:Sent Items

Upon sending, Gnus reports:

> Sending...
> No such function: nntp-request-create-group

I can enclose the Gcc entry in quotes and all works fine:

> Gcc: "nnimap+tenzing:Sent Items"

WIBNI if Gnus or nnimap - whichever is responsible at this point -
could check this group name to see if it needs quoting? Or is the
space separator supposed to be allowed to specify multiple target
groups?

-- 
Steven E. Harris        :: steven.harris@tenzing.com
Tenzing                 :: http://www.tenzing.com