Fix binding of special keys with lower-case mods.

qutebrowser/utils/utils.py

@@ -362,17 +362,18 @@ def normalize_keystr(keystr):
     Return:
         The normalized keystring.
     """
+    keystr = keystr.lower()
     replacements = (
-        ('Control', 'Ctrl'),
-        ('Windows', 'Meta'),
-        ('Mod1', 'Alt'),
-        ('Mod4', 'Meta'),
+        ('control', 'ctrl'),
+        ('windows', 'meta'),
+        ('mod1', 'alt'),
+        ('mod4', 'meta'),
     )
     for (orig, repl) in replacements:
         keystr = keystr.replace(orig, repl)
-    for mod in ('Ctrl', 'Meta', 'Alt', 'Shift'):
+    for mod in ('ctrl', 'meta', 'alt', 'shift'):
         keystr = keystr.replace(mod + '-', mod + '+')
-    return keystr.lower()
+    return keystr
 
 
 class FakeIOStream(io.TextIOBase):

tests/utils/test_utils.py

@@ -337,6 +337,8 @@ class TestNormalize:
         ('Mod4+x', 'meta+x'),
         ('Control--', 'ctrl+-'),
         ('Windows++', 'meta++'),
+        ('ctrl-x', 'ctrl+x'),
+        ('control+x', 'ctrl+x')
     )
 
     @pytest.mark.parametrize('orig, repl', STRINGS)