In editor vi (popular on UNIX/Linux), there're lots of nice features, such as search for or replace strings with a regular expression pattern. Is there a plugin that provides these functionalities? Say I want to search for a word that begins with a capital letter followed by 2 or 3 digits and ending with either either x or y. (This is just an example. I don't need this specific search for now.) I know we can write a VBA program to do this search. But if there's a plugin, we don't need to write VBA every time we need this.