--- a/mercurial/util.py	Mon Mar 23 13:15:57 2009 +0100
+++ b/mercurial/util.py	Mon Mar 23 10:41:42 2009 +0100
@@ -2017,3 +2017,8 @@
     except ImportError:
         pass
     return 80
+
+def iterlines(iterator):
+    for chunk in iterator:
+        for line in chunk.splitlines():
+            yield line