scan: fix quiet mode with keywords

Resolves: #413
Signed-off-by: Arthur Zamarin <arthurzam@gentoo.org>

Author: arthurzam

src/pkgcheck/scripts/argparse_actions.py

@@ -302,6 +302,10 @@ def __call__(self, parser, namespace, values, option_string=None):
             enabled_keywords = set().union(*(c.known_results for c in namespace.enabled_checks))
 
         namespace.filtered_keywords = enabled_keywords - disabled_keywords
+        if namespace.verbosity < 0:  # quiet mode, include only errors
+            namespace.filtered_keywords = {
+                x for x in namespace.filtered_keywords if x.level == "error"
+            }
         # restrict enabled checks if none have been selected
         if not namespace.selected_checks:
             namespace.enabled_checks = set()

tests/scripts/test_pkgcheck_scan.py

@@ -499,6 +499,11 @@ def test_scan_quiet(self, repo):
             results = list(self.scan(self.scan_args + ["-r", repo.location, arg]))
             assert not results
 
+        results = list(
+            self.scan(self.scan_args + ["-r", repo.location, "-q", "-k=-UnknownKeywords"])
+        )
+        assert not results
+
     def test_explict_skip_check(self):
         """SkipCheck exceptions are raised when triggered for explicitly enabled checks."""
         error = "network checks not enabled"