[Fix] Fix handling of short option with non-trivial equals

Rework -a=bc handling

Fixes #5.

index.js

@@ -189,8 +189,8 @@ module.exports = function (args, opts) {
 					continue;
 				}
 
-				if ((/[A-Za-z]/).test(letters[j]) && (/[=]/).test(next)) {
-					setArg(letters[j], next.split('=')[1], arg);
+				if ((/[A-Za-z]/).test(letters[j]) && next[0] === '=') {
+					setArg(letters[j], next.slice(1), arg);
 					broken = true;
 					break;
 				}

test/kv_short.js

@@ -16,3 +16,17 @@ test('multi short -k=v', function (t) {
 	var argv = parse(['-a=whatever', '-b=robots']);
 	t.deepEqual(argv, { a: 'whatever', b: 'robots', _: [] });
 });
+
+test('short with embedded equals -k=a=b', function (t) {
+	t.plan(1);
+
+	var argv = parse(['-k=a=b']);
+	t.deepEqual(argv, { k: 'a=b', _: [] });
+});
+
+test('short with later equals like -ab=c', function (t) {
+	t.plan(1);
+
+	var argv = parse(['-ab=c']);
+	t.deepEqual(argv, { a: true, b: 'c', _: [] });
+});