From b70c561e1c4645a77f3038fa9d5889c452f588b1 Mon Sep 17 00:00:00 2001
From: "Eric S. Raymond" <esr@thyrsus.com>
Date: Wed, 12 Nov 2014 17:44:32 -0500
Subject: [PATCH] Make a function slightly more general.

---
 src | 8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)

diff --git a/src b/src
index 4b67786..fdee133 100755
--- a/src
+++ b/src
@@ -221,9 +221,11 @@ class History:
         if reversed:
             selection.reverse()
         return selection
-    def tip(self):
-        "Return the tip revision of the current branch."
-        s = self.native_to_revno(self.current())
+    def tip(self, rev=None):
+        "Return the tip revision of the branch of the given native revision."
+        if rev is None:
+            rev = self.current()
+        s = self.native_to_revno(rev)
         while True:
             rev = self.revno_to_native(s)
             rev = backend.succ(rev)
-- 
2.43.0