def glymurrc_fname():
<EOL>fname = os.path.join(os.getcwd(), '<STR_LIT>')<EOL>if os.path.exists(fname):<EOL><INDENT>return fname<EOL><DEDENT>confdir = get_configdir()<EOL>if confdir is not None:<EOL><INDENT>fname = os.path.join(confdir, '<STR_LIT>')<EOL>if os.path.exists(fname):<EOL><INDENT>return fname<EOL><DEDENT><DEDENT>return None<EOL>
Return the path to the configuration file.

    Search order:
        1) current working directory
        2) environ var XDG_CONFIG_HOME
        3) $HOME/.config/glymur/glymurrc