diff -r e7d3b509af8b -r 08a0f04b56bd mercurial/byterange.py
--- a/mercurial/byterange.py	Mon Jan 25 00:05:22 2010 -0600
+++ b/mercurial/byterange.py	Mon Jan 25 00:05:27 2010 -0600
@@ -310,7 +310,8 @@
                 (fb, lb) = range_tup
                 if lb == '':
                     if retrlen is None or retrlen == 0:
-                        raise RangeError('Requested Range Not Satisfiable due to unobtainable file length.')
+                        raise RangeError('Requested Range Not Satisfiable due'
+                                         ' to unobtainable file length.')
                     lb = retrlen
                     retrlen = lb - fb
                     if retrlen < 0: