EMINCOUNT:
            fputs(&quot;missing option &quot;,fp);
            arg_print_option(fp,shortopts,longopts,datatype,&quot;\n&quot;);
            break;

        case EMAXCOUNT:
            fputs(&quot;excess option &quot;,fp);
            arg_print_option(fp,shortopts,longopts,argval,&quot;\n&quot;);
            break;

        case EBADINT:
            arg_print_option(fp,shortopts,longopts,argval,&quot; is not a valid &lt;int&gt;\n&quot;);
            break;

        <I>/* &lt;add custom error messa