revset: wider definition of ascending and descending for spanset
Before this patches, empty spanset were seen as neither ascending nor
descending. This is mathematically wrong and create some edges case. We put
`isascending` and `isdescending` back on track so we can use them to simplify
some of the spanset code.
Benchmarks show no performances harmed in the process.
--- a/mercurial/revset.py Wed Sep 17 23:21:20 2014 +0900
+++ b/mercurial/revset.py Tue Sep 16 23:34:18 2014 -0700
@@ -2835,10 +2835,10 @@
return self
def isascending(self):
- return self._start < self._end
+ return self._start <= self._end
def isdescending(self):
- return self._start > self._end
+ return self._start >= self._end
def filter(self, l):
if self._start <= self._end: