--- a/mercurial/commands.py	Tue Sep 07 16:34:07 2010 +0200
+++ b/mercurial/commands.py	Wed Sep 08 12:53:15 2010 +0200
@@ -411,14 +411,19 @@
         return
 
     # update state
-    node = repo.lookup(rev or '.')
+
+    if rev:
+        nodes = [repo.lookup(i) for i in cmdutil.revrange(repo, [rev])]
+    else:
+        nodes = [repo.lookup('.')]
+
     if good or bad or skip:
         if good:
-            state['good'].append(node)
+            state['good'] += nodes
         elif bad:
-            state['bad'].append(node)
+            state['bad'] += nodes
         elif skip:
-            state['skip'].append(node)
+            state['skip'] += nodes
         hbisect.save_state(repo, state)
 
     if not check_state(state):

--- a/tests/test-bisect.t	Tue Sep 07 16:34:07 2010 +0200
+++ b/tests/test-bisect.t	Wed Sep 08 12:53:15 2010 +0200
@@ -214,6 +214,29 @@
   summary:     msg 29
   
 
+mark revsets instead of single revs
+
+  $ hg bisect -r
+  $ hg bisect -b "0::3"
+  $ hg bisect -s "13::16"
+  $ hg bisect -g "26::tip"
+  Testing changeset 12:1941b52820a5 (23 changesets remaining, ~4 tests)
+  1 files updated, 0 files merged, 0 files removed, 0 files unresolved
+  $ cat .hg/bisect.state
+  skip 9d7d07bc967ca98ad0600c24953fd289ad5fa991
+  skip ce8f0998e922c179e80819d5066fbe46e2998784
+  skip e7fa0811edb063f6319531f0d0a865882138e180
+  skip a2e6ea4973e9196ddd3386493b0c214b41fd97d3
+  bad b99c7b9c8e11558adef3fad9af211c58d46f325b
+  bad 5cd978ea51499179507ee7b6f340d2dbaa401185
+  bad db07c04beaca44cf24832541e7f4a2346a95275b
+  bad b53bea5e2fcb30d3e00bd3409507a5659ce0fd8b
+  good 3efc6fd51aeb8594398044c6c846ca59ae021203
+  good 288867a866e9adb7a29880b66936c874b80f4651
+  good 8e0c2264c8af790daf3585ada0669d93dee09c83
+  good b5bd63375ab9a290419f2024b7f4ee9ea7ce90a8
+  good ed2d2f24b11c368fa8aa0da9f4e1db580abade59
+  good 58c80a7c8a4025a94cedaf7b4a4e3124e8909a96
 
 bisect reverse test