let's do this

code/_onclick/click.dm

@@ -30,7 +30,7 @@
 	if(SEND_SIGNAL(src, COMSIG_MOB_CLICKON, A, params) & COMSIG_MOB_CANCEL_CLICKON)
 		return
 	. = ClickOn(A, params)
-	if(.)
+	if(!(. & DISCARD_LAST_ACTION))
 		FlushCurrentAction()
 	else
 		DiscardCurrentAction()
@@ -94,30 +94,29 @@
 
 	if(restrained())
 		DelayNextAction(CLICK_CD_HANDCUFFED)
-		RestrainedClickOn(A)
-		return TRUE
+		return RestrainedClickOn(A)
 
 	if(in_throw_mode)
 		throw_item(A)
-		return TRUE
+		return
 
 	var/obj/item/W = get_active_held_item()
 
 	if(W == A)
 		W.attack_self(src)
 		update_inv_hands()
-		return TRUE
+		return
 
 	//These are always reachable.
 	//User itself, current loc, and user inventory
 	if(A in DirectAccess())
 		if(W)
-			return !(W.melee_attack_chain(src, A, params) & DISCARD_LAST_ACTION)
+			return W.melee_attack_chain(src, A, params)
 		else
 			. = UnarmedAttack(A, TRUE, a_intent)
 			if(!(. & NO_AUTO_CLICKDELAY_HANDLING) && ismob(A))
 				DelayNextAction(CLICK_CD_MELEE)
-			return !(. & DISCARD_LAST_ACTION)
+			return
 
 	//Can't reach anything else in lockers or other weirdness
 	if(!loc.AllowClick())
@@ -126,17 +125,17 @@
 	//Standard reach turf to turf or reaching inside storage
 	if(CanReach(A,W))
 		if(W)
-			return !(W.melee_attack_chain(src, A, params) & DISCARD_LAST_ACTION)
+			return W.melee_attack_chain(src, A, params)
 		else
 			. = UnarmedAttack(A, TRUE, a_intent)
 			if(!(. & NO_AUTO_CLICKDELAY_HANDLING) && ismob(A))
 				DelayNextAction(CLICK_CD_MELEE)
-			return !(. & DISCARD_LAST_ACTION)
+			return
 	else
 		if(W)
-			return !(W.ranged_attack_chain(src, A, params) & DISCARD_LAST_ACTION)
+			return W.ranged_attack_chain(src, A, params)
 		else
-			return !(RangedAttack(A,params) & DISCARD_LAST_ACTION)
+			return RangedAttack(A,params)
 
 //Is the atom obscured by a PREVENT_CLICK_UNDER_1 object above it
 /atom/proc/IsObscured()

code/_onclick/cyborg.dm

@@ -16,23 +16,17 @@
 
 	var/list/modifiers = params2list(params)
 	if(modifiers["shift"] && modifiers["ctrl"])
-		CtrlShiftClickOn(A)
-		return
+		return CtrlShiftClickOn(A)
 	if(modifiers["shift"] && modifiers["middle"])
-		ShiftMiddleClickOn(A)
-		return
+		return ShiftMiddleClickOn(A)
 	if(modifiers["middle"])
-		MiddleClickOn(A)
-		return
+		return MiddleClickOn(A)
 	if(modifiers["shift"])
-		ShiftClickOn(A)
-		return
+		return ShiftClickOn(A)
 	if(modifiers["alt"]) // alt and alt-gr (rightalt)
-		AltClickOn(A)
-		return
+		return AltClickOn(A)
 	if(modifiers["ctrl"])
-		CtrlClickOn(A)
-		return
+		return CtrlClickOn(A)
 
 	if(!CheckActionCooldown(immediate = TRUE))
 		return
@@ -81,7 +75,7 @@
 			. = W.melee_attack_chain(src, A, params)
 			if(!(. & NO_AUTO_CLICKDELAY_HANDLING) && ismob(A))
 				DelayNextAction(CLICK_CD_MELEE)
-			return !(. & DISCARD_LAST_ACTION)
+			return
 
 		if(!isturf(loc))
 			return
@@ -92,9 +86,9 @@
 				. = W.melee_attack_chain(src, A, params)
 				if(!(. & NO_AUTO_CLICKDELAY_HANDLING) && ismob(A))
 					DelayNextAction(CLICK_CD_MELEE)
-				return !(. & DISCARD_LAST_ACTION)
+				return
 			else
-				return !(W.afterattack(A, src, 0, params) & DISCARD_LAST_ACTION)
+				return W.afterattack(A, src, 0, params)
 
 //Middle click cycles through selected modules.
 /mob/living/silicon/robot/MiddleClickOn(atom/A)

code/_onclick/right_click.dm

@@ -17,8 +17,7 @@
 
 	if(restrained())
 		DelayNextAction(CLICK_CD_HANDCUFFED)
-		RestrainedClickOn(A)
-		return TRUE
+		return RestrainedClickOn(A)
 
 	if(in_throw_mode)
 		throw_item(A)//todo: make it plausible to lightly toss items via right-click
@@ -36,14 +35,14 @@
 	//User itself, current loc, and user inventory
 	if(A in DirectAccess())
 		if(W)
-			return !(W.rightclick__melee_attack_chain(src, A, params) & DISCARD_LAST_ACTION)
+			return W.rightclick_melee_attack_chain(src, A, params)
 		else
 			if(!AltUnarmedAttack(A, TRUE))
 				. = UnarmedAttack(A, TRUE, a_intent)
 				if(!(. & NO_AUTO_CLICKDELAY_HANDLING) && ismob(A))
 					DelayNextAction(CLICK_CD_MELEE)
-				return (.)? TRUE : FALSE
-			return TRUE
+				return
+			return
 
 	//Can't reach anything else in lockers or other weirdness
 	if(!loc.AllowClick())
@@ -52,22 +51,21 @@
 	//Standard reach turf to turf or reaching inside storage
 	if(CanReach(A,W))
 		if(W)
-			return !(W.rightclick_melee_attack_chain(src, A, params) & DISCARD_LAST_ACTION)
+			return W.rightclick_melee_attack_chain(src, A, params)
 		else
 			if(!AltUnarmedAttack(A, TRUE))
 				. = UnarmedAttack(A, TRUE, a_intent)
 				if(!(. & NO_AUTO_CLICKDELAY_HANDLING) && ismob(A))
 					DelayNextAction(CLICK_CD_MELEE)
-				return (.)? TRUE : FALSE
-			return TRUE
+				return
+			return
 	else
 		if(W)
 			if(!W.altafterattack(A, src, FALSE, params))
-				W.afterattack(A, src, FALSE, params)
+				return W.afterattack(A, src, FALSE, params)
 		else
 			if(!AltRangedAttack(A, params))
-				return !(RangedAttack(A, params) & DISCARD_LAST_ACTION)
-			return TRUE
+				return (RangedAttack(A, params)
 
 /mob/proc/AltUnarmedAttack(atom/A, proximity_flag)
 	if(ismob(A))