enforce default behavior of not granting points for self-answers bein…

…g selected

points.php

@@ -13,12 +13,24 @@
 function qa_db_points_calculations() {
 	$points_calculations = qa_db_points_calculations_base();
 
+	// Don't grant points for selecting a self-answer.
 	if (array_key_exists('aselects', $points_calculations)) {
 		$points_calculations['aselects']['formula'] = "COUNT(*) AS aselects FROM ^posts AS userid_src JOIN ^posts AS answers ON userid_src.selchildid=answers.postid WHERE userid_src.userid~ AND userid_src.type='Q' AND (answers.userid <=> userid_src.userid)";
 	} else {
 		// if key 'aselects' is missing: throw a warning, but continue regardless
 		trigger_error("Missing key 'aselects' in points calculations array", E_USER_WARNING);
 	}
 
+	// Also don't grant points for a self-answer being selected.
+	// This already is the default behavior, but we enforce it here so that
+  // changing the default behavior wouldn't break the functionality of this
+  // plugin.
+	if (array_key_exists('aselecteds', $points_calculations)) {
+		$points_calculations['aselecteds']['formula'] = "COUNT(*) AS aselecteds FROM ^posts AS userid_src JOIN ^posts AS questions ON questions.selchildid=userid_src.postid WHERE userid_src.userid~ AND userid_src.type='A' AND NOT (questions.userid <=> userid_src.userid)";
+	} else {
+		// if key 'aselecteds' is missing: throw a warning, but continue regardless
+		trigger_error("Missing key 'aselecteds' in points calculations array", E_USER_WARNING);
+	}
+
 	return $points_calculations;
 }