1054         return mdiff.textdiff(self.revision(self.node(rev1)),

  1054         return mdiff.textdiff(self.revision(self.node(rev1)),

  1055                               self.revision(self.node(rev2)))

  1055                               self.revision(self.node(rev2)))

  1056 

  1056 

  1057     def revision(self, node):

  1057     def revision(self, node):

  1058         """return an uncompressed revision of a given node"""

  1058         """return an uncompressed revision of a given node"""

  1060         if node == nullid:

  1060         if node == nullid:

  1061             return ""

  1061             return ""

  1062         if self._cache:

  1062         if self._cache:

  1063             if self._cache[0] == node:

  1063             if self._cache[0] == node:

  1064                 return self._cache[2]

  1064                 return self._cache[2]