ACX_BUGURL has
[case "$withval" in
yes) AC_MSG_ERROR([bug URL not specified]) ;;
no) REPORT_BUGS_TO="";
REPORT_BUGS_TEXI=""
;;
*) REPORT_BUGS_TO="<$withval>"
REPORT_BUGS_TEXI="@uref{`echo $withval | sed 's/@/@@/g'`}"
;;
esac],
REPORT_BUGS_TO="<$1>"
REPORT_BUGS_TEXI="@uref{$1}"
It assumes there is no @ in $1. Shouldn't be
REPORT_BUGS_TEXI="@uref{`echo $1 | sed 's/@/@@/g'`}"
H.J.
