From e47ce2e877a942adf539b87b9aa8900ef68d9493 Mon Sep 17 00:00:00 2001
From: "Eric S. Raymond" <esr@thyrsus.com>
Date: Mon, 24 Nov 2014 03:54:14 -0500
Subject: [PATCH] Resiolution must die gracefully on a file with no revisions.

---
 src | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/src b/src
index aa1cb53..a05ee9b 100755
--- a/src
+++ b/src
@@ -943,7 +943,10 @@ class CommandContext:
             if type(part) == type(0):
                 return part
             if token == '':	# User specified @
-                return metadata.current().revno
+                current = metadata.current()
+                if current is None:
+                    croak("in {0}, no current revision".format(metadata.name))
+                return current.revno
             if part not in metadata.symbols:
                 croak("in {0}, can't resolve symbol {1}".format(metadata.name,token))
             else:
-- 
2.43.0