removed match to allow older python versions

patch_xkb.py

@@ -10,16 +10,15 @@ def brackets(text):
     res = 0
     slash = 0
     for i in text:
-        match i:
+        if i == "/":
-            case "/":
+            slash += 1
-                slash += 1
+            if slash == 2:
-                if slash == 2:
+                break
-                    break
+            continue
-                continue
+        if i == "{":
-            case "{":
+            res += 1
-                res += 1
+        if i == "}":
-            case "}":
+            res -= 1
-                res -= 1
         slash = 0
     return res