CommandMap: recurse to resolve command sequences properly

src/core/Command.h

@@ -47,10 +47,14 @@ public:
             count = 0u;
             following_char = 0u;
         }
+
+        bool operator==(const Unit & other) const;
     };
 
     Unit main;
     Unit motion;
+
+    bool operator==(const Command & other) const;
 };
 
 #endif