diff -r 4417eb761ba8 -r 329887a7074c contrib/check-code.py
--- a/contrib/check-code.py	Fri Apr 06 15:16:30 2012 -0500
+++ b/contrib/check-code.py	Fri Apr 06 15:18:14 2012 -0500
@@ -95,6 +95,8 @@
      "explicit exit code checks unnecessary"),
     (uprefix + r'set -e', "don't use set -e"),
     (uprefixc + r'( *)\t', "don't use tabs to indent"),
+    (uprefixc + r'.*do\s*true;\s*done',
+     "don't use true as loop body, use sleep 0"),
   ],
   # warnings
   []