0) Try and flush the menu cache, theme cache

Very often we work on projects that are hosted on a remote server. There are multiple ways to work on the remote files:

1. ssh into the remote machine and use an editor like vi or emacs to edit the files

Create the custom autocomplete field using the custom module.
How to create a custom autocomplete form and to get the user names or or anything else?
Here is the example.
/**
*Implementation of hook_menu().
*/