Data commit

Task/String-length/Lambdatalk/string-length.lambdatalk

@@ -0,0 +1,33 @@
+{script
+LAMBDATALK.DICT["W.unicodeLength"] = function() {
+  function countCodePoints(str) {
+    var point,
+        index,
+        width = 0,
+        len = 0;
+    for (index = 0; index < str.length;) {
+      point = str.codePointAt(index);
+      width = 0;
+      while (point) {
+          width += 1;
+          point = point >> 8;
+      }
+      index += Math.round(width/2);
+      len += 1;
+    }
+    return len;
+  }
+  var args = arguments[0].trim();
+  return countCodePoints(args)
+};
+}
+
+Testing:
+
+{W.length Hello, World!} -> 13
+
+{W.length José}          -> 4
+{W.unicodeLength José}   -> 4
+
+{W.length 𝔘𝔫𝔦𝔠𝔬𝔡𝔢}        -> 14
+{W.unicodeLength 𝔘𝔫𝔦𝔠𝔬𝔡𝔢} -> 7