diff -r 336a614f35a3 Tools/scripts/patchcheck.py
--- a/Tools/scripts/patchcheck.py	Sun Feb 19 10:17:30 2012 -0500
+++ b/Tools/scripts/patchcheck.py	Sun Feb 19 19:22:08 2012 +0100
@@ -36,6 +36,21 @@
     return decorated_fxn
 
 
+def mq_changed_files():
+    """Get the files that changed due mq applied patches.
+
+    For more information see: hg help qdiff
+    """
+    files = []
+    cmd = 'hg qdiff'
+    with subprocess.Popen(cmd.split(), stdout=subprocess.PIPE) as st:
+        for x in st.stdout:
+            line = x.decode().rstrip()
+            if line.startswith('diff -r'):
+                files.append(line.split()[-1])
+    return files
+
+
 @status("Getting the list of files that have been added/changed",
         info=lambda x: n_files_str(len(x)))
 def changed_files():
@@ -43,9 +58,13 @@
     if not os.path.isdir(os.path.join(SRCDIR, '.hg')):
         sys.exit('need a checkout to get modified files')
 
+    files = []
     cmd = 'hg status --added --modified --no-status'
     with subprocess.Popen(cmd.split(), stdout=subprocess.PIPE) as st:
-        return [x.decode().rstrip() for x in st.stdout]
+        files += [x.decode().rstrip() for x in st.stdout]
+
+    files += mq_changed_files()
+    return files
 
 
 def report_modified_files(file_paths):