# HG changeset patch
# User Bryan O'Sullivan <bos@serpentine.com>
# Date 1126767869 25200
# Node ID fe7fbfdb066d2ff8f34978e3db0db868f3912e44
# Parent  e825dfea382373b84378dcb3ea472a8ae7b27c38
Clamp negative rev numbers at zero.
Prior to this change, trying to run "hg log -r -50:" in a repo with
less than 50 changes caused an error.  Now that we clamp at zero: no
more error.


diff --git a/mercurial/commands.py b/mercurial/commands.py
--- a/mercurial/commands.py
+++ b/mercurial/commands.py
@@ -163,9 +163,9 @@ def revrange(ui, repo, revs, revlog=None
             num = int(val)
             if str(num) != val:
                 raise ValueError
-            if num < 0:
-                num += revcount
-            if not (0 <= num < revcount):
+            if num < 0: num += revcount
+            if num < 0: num = 0
+            elif num >= revcount:
                 raise ValueError
         except ValueError:
             try: