This command produced diffs of files, similar to CVS's
It is particularly useful for producing patchsets.
This command can be executed by submitting a correctly formatted url. If successful, it returns a text/plain diff. With no parameters given, this help is returned. This command has several formats:
Diff of changeset csid:
Diff between two tags/revisions A and B:
The diffopts control how the diff is produced, and are optional. Defaults are specified below.
For single-valued parameters, you may specify the name of the option as its value. For example
?R=R are equivalent.