--- /dev/null
+var test = require('tape');
+var expand = require('..');
+
+test('ignores ${', function(t) {
+ t.deepEqual(expand('${1..3}'), ['${1..3}']);
+ t.deepEqual(expand('${a,b}${c,d}'), ['${a,b}${c,d}']);
+ t.deepEqual(expand('x${a,b}x${c,d}x'), ['x${a,b}x${c,d}x']);
+ t.end();
+});