diff -r 2ad4e9b44d8b -r ec8a49c46d7e contrib/check-code.py
--- a/contrib/check-code.py	Fri Dec 02 18:36:32 2011 +0100
+++ b/contrib/check-code.py	Mon Dec 05 17:48:40 2011 -0600
@@ -88,7 +88,7 @@
     (r'^(\S|  $ ).*(\S[ \t]+|^[ \t]+)\n', "trailing whitespace on non-output"),
     (uprefix + r'.*\|\s*sed', "use regex test output patterns instead of sed"),
     (uprefix + r'(true|exit 0)', "explicit zero exit unnecessary"),
-    (uprefix + r'.*\$\?', "explicit exit code checks unnecessary"),
+    (uprefix + r'.*(?<!\[)\$\?', "explicit exit code checks unnecessary"),
     (uprefix + r'.*\|\| echo.*(fail|error)',
      "explicit exit code checks unnecessary"),
     (uprefix + r'set -e', "don't use set -e"),