When using the optional rule, Flanking, do melee spell attacks gain advantage?
Flanking is an optional rule we utilize in our game.
When a creature and at least one of its allies are adjacent to an enemy and on opposite sides or corners of the enemy's space, they flank that enemy, and each of them has advantage on melee attack rolls against that enemy.
Would melee spell attacks also gain this benefit when using them while flanking an enemy? My thoughts are that it would.