diff -r 7f3593c29473 -r d1a0a64f6e16 hgext/convert/common.py
--- a/hgext/convert/common.py	Mon Nov 14 23:16:05 2016 +0000
+++ b/hgext/convert/common.py	Mon Nov 14 23:17:15 2016 +0000
@@ -454,7 +454,7 @@
             if err.errno != errno.ENOENT:
                 raise
             return
-        for i, line in enumerate(fp):
+        for i, line in enumerate(util.iterfile(fp)):
             line = line.splitlines()[0].rstrip()
             if not line:
                 # Ignore blank lines