--- /dev/null
+var MATCH = require('./_wks')('match');
+module.exports = function(KEY){
+ var re = /./;
+ try {
+ '/./'[KEY](re);
+ } catch(e){
+ try {
+ re[MATCH] = false;
+ return !'/./'[KEY](re);
+ } catch(f){ /* empty */ }
+ } return true;
+};
\ No newline at end of file