Always prefer exact over partial matches

qutebrowser/keyinput/basekeyparser.py

@@ -102,14 +102,17 @@ class BaseKeyParser(QObject):
         """
         assert sequence
         assert not isinstance(sequence, str)
+        result = QKeySequence.NoMatch
 
         for seq, cmd in self.bindings.items():
             assert not isinstance(seq, str), seq
             match = sequence.matches(seq)
-            if match != QKeySequence.NoMatch:
+            if match == QKeySequence.ExactMatch:
                 return (match, cmd)
+            elif match == QKeySequence.PartialMatch:
+                result = QKeySequence.PartialMatch
 
-        return (QKeySequence.NoMatch, None)
+        return (result, None)
 
     def handle(self, e):
         """Handle a new keypress.

tests/unit/keyinput/test_basekeyparser.py

@@ -203,6 +203,19 @@ class TestHandle:
 
         keyparser.execute.assert_called_once_with('yank -s', None)
 
+    def test_partial_before_full_match(self, keyparser, fake_keyevent,
+                                       config_stub):
+        """Make sure full matches always take precedence over partial ones."""
+        config_stub.val.bindings.commands = {
+            'normal': {
+                'ab': 'message-info bar',
+                'a': 'message-info foo'
+            }
+        }
+        keyparser._read_config('normal')
+        keyparser.handle(fake_keyevent(Qt.Key_A))
+        keyparser.execute.assert_called_once_with('message-info foo', None)
+
 
 class TestCount: