# HG changeset patch
# User Boris Feld <boris.feld@octobus.net>
# Date 1529621623 -3600
# Node ID 879cbdde63df58af8579f018cd9210f7c83c622f
# Parent  561a450c7b64fee9912b742218b4162638861465
revlog: do inclusive descendant testing (API)

In many other places, a revision is considered a descendant of itself.  We
update the behavior of `revlog.descendant()` to match this. (for example.
`revlog.isancestor` does inclusive testing).

No tests break, so it seems safe to do so.

This will make it easier to use a more efficient implementation in a later
changeset.

diff -r 561a450c7b64 -r 879cbdde63df mercurial/revlog.py
--- a/mercurial/revlog.py	Sat Jun 30 16:06:05 2018 -0700
+++ b/mercurial/revlog.py	Thu Jun 21 23:53:43 2018 +0100
@@ -1378,6 +1378,8 @@
     def descendant(self, start, end):
         if start == nullrev:
             return True
+        elif start == end:
+            return True
         for i in self.descendants([start]):
             if i == end:
                 return True