g.m

function g(input)
    % cd to the directory associated with <bookmark>
    persistent prevDir
    curDir = cd;
    if strcmp(input,'-') && ~isempty(prevDir)
        cd(prevDir)
        prevDir = curDir;
        return 
    end 
    data = parse_bookmarks();
    folder = get_dir(data, input);
    if isempty(folder)
        error('matlabmarks:d:unknownbookmark', 'Dont know that bookmark, use command `l` to list all folders.')
    else
        cd(folder);
    end
    prevDir = curDir; 
end