diff -r a02b1025536c -r 943253aadddb tests/heredoctest.py
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/tests/heredoctest.py	Wed Oct 12 22:01:13 2011 +0200
@@ -0,0 +1,9 @@
+import doctest, tempfile, os, sys
+
+if __name__ == "__main__":
+    fd, name = tempfile.mkstemp(suffix='hg-tst')
+    os.write(fd, sys.stdin.read())
+    os.close(fd)
+    failures, _ = doctest.testfile(name, module_relative=False)
+    if failures:
+        sys.exit(1)