revset: add "diff" field to "matching" keyword...
revset: add "diff" field to "matching" keyword
The new "diff" field lets you use the matching revset keyword to find revisions
that apply the same change as the selected revisions.
The match must be exact (i.e. same additions, same deletions, same modified
lines and same change context, same file renames and copies).
Two revisions matching their diff must also match their files. Thus, to match
the diff much faster we will always check that the 'files' match first, and only
then check that the 'diff' matches as well.
