// DeleteEmptyLines Ver: 1.0
// Author: chengzi (Tiancheng Yu)
// Last Update: 2016/10/7
// A Macro that deletes all empty lines in your current file.
// Note: Will clear all your current bookmarks of the file.
document.selection.ClearBookMark();
nFound = document.selection.Find("^$",eeFindPrevious | eeFindReplaceRegExp | eeFindBookmark,0);
editor.ExecuteCommandByID(4589);
if (nFound != 0 && document.getLine(document.getLines()) == "") {
    document.selection.EndOfDocument();
    document.selection.DeleteLeft(1);
}
if (nFound != 0) {
    document.selection.EndOfDocument();
}