Make syntax highlighting smoother

include/editor/editor.h

@@ -33,9 +33,8 @@ struct Editor {
   Queue<TSInputEdit> edit_queue;
   std::vector<Fold> folds;
   Spans spans;
-  // TODO: Split into 2 groups to have their own mutex's . one for word hl and
-  //       one for hex colors
-  Spans def_spans;
+  Spans word_spans;
+  Spans hex_color_spans;
   uint32_t hooks[94];
   bool jumper_set;
   std::shared_mutex v_mtx;

include/editor/spans.h

@@ -7,7 +7,7 @@
 struct Spans {
   std::vector<Span> spans;
   Queue<std::pair<uint32_t, int64_t>> edits;
-  bool mid_parse = false;
+  std::atomic<bool> mid_parse = false;
   std::shared_mutex mtx;
 };