action="$(POST action)"
newfield="$(POST newfield |grep -m 1 -xE '[A-Z][A-Z0-9-]*')"
-if printf '%s\n' "$action" |grep -qxE 'addfield [A-Z][A-Z0-9]*'; then
+if printf '%s\n' "$action" |grep -qxE 'addfield [A-Z][A-Z0-9-]*'; then
newfield="${action##* }"
action=addfield
fi