enhance Google CardDAV support
Submitted by Patrick Ohly
Assigned to SyncEvolution Community
Support for Google CardDAV is new. Because of a vCard encoding issue on the server side, spaces in long notes may get removed. Like Evolution, SyncEvolution does not yet support some of the advanced features of the server, in particular custom labels for phone numbers, emails and addresses. Likewise, some client properties are not supported by the server: CALURI, CATEGORIES, FBURL, GEO and ROLE are not supported. Of ORG, only the first two components are supported. Currently, properties not supported by one side get lost in a full roundtrip sync.
To solve this we need to add CtCap support to local sync, with CtCap being sent by the CardDAV side depending on who it is talking to.