Fixed range style: symmetric difference is replaced with intersection of each individual segment styles

lib/src/models/documents/nodes/line.dart

@@ -352,18 +352,13 @@ class Line extends Container<Leaf?> {
     final excluded = <Attribute>{};
 
     void _handle(Style style) {
-      if (result.isEmpty) {
-        excluded.addAll(style.values);
-      } else {
-        for (final attr in result.values) {
-          if (!style.containsKey(attr.key)) {
-            excluded.add(attr);
-          }
+      for (final attr in result.values) {
+        if (!style.containsKey(attr.key) ||
+            (style.attributes[attr.key] != attr.value)) {
+          excluded.add(attr);
         }
       }
-      final remaining = style.removeAll(excluded);
       result = result.removeAll(excluded);
-      result = result.mergeAll(remaining);
     }
 
     final data = queryChild(offset, true);