Trac supports a convenient way to refer to resources of other Trac servers, from within the Wiki markup, since version 0.10.
List of Active InterTrac Prefixes
Simply use the name of the other Trac environment as a prefix, followed by a colon, ending with the resource located in the other environment.
The other resource is specified using a regular TracLinks, of any flavor.
That target environment name is either the real name of the environment, or an alias for it. The aliases are defined in trac.ini (see below). The prefix is case insensitive.
For convenience, there's also some alternative short-hand form, where one can use an alias as an immediate prefix for the identifier of a ticket, changeset or report: (e.g. #T234, [T1508], [trac 1508], ...)
The .url is mandatory and is used for locating the other Trac. This can be a relative URL in case that Trac environment is located on the same server.
The .title information will be used for providing an useful tooltip when moving the cursor over an InterTrac links.
Finally, the .compat option can be used to activate or disable a compatbility mode:
Now, given the above configuration, one could create the following links:
The generic form intertrac_prefix:module:id is translated to the corresponding URL <remote>/module/id, shorthand links are specific to some modules (e.g. #T234 is processed by the ticket module) and for the rest (intertrac_prefix:something), we rely on the TracSearch#quickjump facility of the remote Trac.
I think that the trac prefix could even be set as a default in the [intertrac] TracIni section. --CB