Regexp is being built without being properly escaped

If you type special characters like `[` (hard bracket) then regexps will fail. 

This function will prevent this error:

```
function escapeRegExp(text) {
    return text.replace(/[-[\]{}()*+?.,\\^$|#\s]/g, "\\$&");
}
```

Use it when you do text.search and when you call new RegExp() and you’ll be fine.
