comparison mercurial/revlog.py @ 11996:3195cf01dfb9

revlog.revision(): don't use nullrev as the default value for the cache

I is probably a bug if the deltachain computation think there was a cache hit
at nullrev. Use None instead, this will never trigger a cache hit.

11995:ff84cd2bdfaf

        return mdiff.textdiff(self.revision(self.node(rev1)),
                              self.revision(self.node(rev2)))

    def revision(self, node):
        """return an uncompressed revision of a given node"""
        cachedrev = nullrev
        if node == nullid:
            return ""
        if self._cache:
            if self._cache[0] == node:
                return self._cache[2]

11996:3195cf01dfb9

        return mdiff.textdiff(self.revision(self.node(rev1)),
                              self.revision(self.node(rev2)))

    def revision(self, node):
        """return an uncompressed revision of a given node"""
        cachedrev = None
        if node == nullid:
            return ""
        if self._cache:
            if self._cache[0] == node:
                return self._cache[2]