From d69bda4cfd3dfe27385218cdd43af4643bc5f0e8 Mon Sep 17 00:00:00 2001
From: "Eric S. Raymond" <esr@thyrsus.com>
Date: Wed, 12 Nov 2014 08:54:22 -0500
Subject: [PATCH] Correct behavior from tip().  Regression test passes.

---
 src | 11 ++++++++---
 1 file changed, 8 insertions(+), 3 deletions(-)

diff --git a/src b/src
index e288e3f..7d69436 100755
--- a/src
+++ b/src
@@ -213,9 +213,14 @@ class History:
             selection.reverse()
         return selection
     def tip(self):
-        "Return the latest revision in the repo."
-        # FIXME: should return the current branch tip.
-        return self.revlist[0]
+        "Return the tip revision of the current branch."
+        s = self.native_to_revno(self.current())
+        while True:
+            nxt = backend.succ(s, self)
+            if nxt is None:
+                return self.by_revno(s)
+            else:
+                s = nxt
     def native_to_revno(self, revision):
         "Map a native ID to a revno"
         for item in self.revlist:
-- 
2.43.0