run-tests: drop required (feature !) style lines when the output is missing Essentially, these were acting as a verbose (?) flag, since they weren't being dropped when required. Foozy has a nice description [1]. Basically, a couple more places needed to check the features before treating it as optional. I don't like how test-run-tests.py had to be hacked, but _hghave() can't be made a static method. The test change was a change while developing `debugssl`, prior to tightening up the cases where the message is printed, that this fix would have caught. [1] https://www.mercurial-scm.org/pipermail/mercurial-devel/2017-July/101941.html

--- a/tests/test-run-tests.py	Mon Jul 24 10:34:32 2017 +0200
+++ b/tests/test-run-tests.py	Tue Jul 18 00:12:44 2017 -0400
@@ -39,7 +39,8 @@
             and output.endswith(b'\n')), 'missing newline'
     assert not re.search(br'[^ \w\\/\r\n()*?]', expected + output), \
            b'single backslash or unknown char'
-    match = run_tests.TTest.linematch(expected, output)
+    test = run_tests.TTest('test-run-test.t', '.', '.')
+    match = test.linematch(expected, output)
     if isinstance(match, str):
         return 'special: ' + match
     elif isinstance(match, bytes):