to_chat replacing stream operator

code/modules/projectiles/guns/launcher/crossbow.dm

@@ -40,7 +40,7 @@
 
 /obj/item/weapon/arrow/rod/removed(mob/user)
 	if(throwforce == 15) // The rod has been superheated - we don't want it to be useable when removed from the bow.
-		user  << "[src] shatters into a scattering of overstressed metal shards as it leaves the crossbow."
+		to_chat(user , "[src] shatters into a scattering of overstressed metal shards as it leaves the crossbow.")
 		var/obj/item/weapon/material/shard/shrapnel/S = new()
 		S.loc = get_turf(src)
 		qdel(src)
@@ -68,7 +68,7 @@
 
 /obj/item/weapon/gun/launcher/crossbow/consume_next_projectile(mob/user=null)
 	if(tension <= 0)
-		user << "<span class='warning'>\The [src] is not drawn back!</span>"
+		to_chat(user, "<span class='warning'>\The [src] is not drawn back!</span>")
 		return null
 	return bolt
 
@@ -96,7 +96,7 @@
 /obj/item/weapon/gun/launcher/crossbow/proc/draw(var/mob/user as mob)
 
 	if(!bolt)
-		user << "You don't have anything nocked to [src]."
+		to_chat(user, "You don't have anything nocked to [src].")
 		return
 
 	if(user.restrained())
@@ -122,7 +122,7 @@
 
 		if(tension >= max_tension)
 			tension = max_tension
-			usr << "[src] clunks as you draw the string to its maximum tension!"
+			to_chat(usr, "[src] clunks as you draw the string to its maximum tension!")
 			return
 
 		user.visible_message("[usr] draws back the string of [src]!","<span class='notice'>You continue drawing back the string of [src]!</span>")
@@ -157,20 +157,20 @@
 			user.drop_item()
 			cell = W
 			cell.loc = src
-			user << "<span class='notice'>You jam [cell] into [src] and wire it to the firing coil.</span>"
+			to_chat(user, "<span class='notice'>You jam [cell] into [src] and wire it to the firing coil.</span>")
 			superheat_rod(user)
 		else
-			user << "<span class='notice'>[src] already has a cell installed.</span>"
+			to_chat(user, "<span class='notice'>[src] already has a cell installed.</span>")
 
 	else if(W.is_screwdriver())
 		if(cell)
 			var/obj/item/C = cell
 			C.loc = get_turf(user)
-			user << "<span class='notice'>You jimmy [cell] out of [src] with [W].</span>"
+			to_chat(user, "<span class='notice'>You jimmy [cell] out of [src] with [W].</span>")
 			playsound(src, W.usesound, 50, 1)
 			cell = null
 		else
-			user << "<span class='notice'>[src] doesn't have a cell installed.</span>"
+			to_chat(user, "<span class='notice'>[src] doesn't have a cell installed.</span>")
 
 	else
 		..()
@@ -181,7 +181,7 @@
 	if(bolt.throwforce >= 15) return
 	if(!istype(bolt,/obj/item/weapon/arrow/rod)) return
 
-	user << "<span class='notice'>[bolt] plinks and crackles as it begins to glow red-hot.</span>"
+	to_chat(user, "<span class='notice'>[bolt] plinks and crackles as it begins to glow red-hot.</span>")
 	bolt.throwforce = 15
 	bolt.icon_state = "metal-rod-superheated"
 	cell.use(500)
@@ -210,22 +210,27 @@
 /obj/item/weapon/crossbowframe/examine(mob/user)
 	..(user)
 	switch(buildstate)
-		if(1) user << "It has a loose rod frame in place."
-		if(2) user << "It has a steel backbone welded in place."
-		if(3) user << "It has a steel backbone and a cell mount installed."
-		if(4) user << "It has a steel backbone, plastic lath and a cell mount installed."
-		if(5) user << "It has a steel cable loosely strung across the lath."
+		if(1)
+			to_chat(user, "It has a loose rod frame in place.")
+		if(2)
+			to_chat(user, "It has a steel backbone welded in place.")
+		if(3)
+			to_chat(user, "It has a steel backbone and a cell mount installed.")
+		if(4)
+			to_chat(user, "It has a steel backbone, plastic lath and a cell mount installed.")
+		if(5)
+			to_chat(user, "It has a steel cable loosely strung across the lath.")
 
 /obj/item/weapon/crossbowframe/attackby(obj/item/W as obj, mob/user as mob)
 	if(istype(W,/obj/item/stack/rods))
 		if(buildstate == 0)
 			var/obj/item/stack/rods/R = W
 			if(R.use(3))
-				user << "<span class='notice'>You assemble a backbone of rods around the wooden stock.</span>"
+				to_chat(user, "<span class='notice'>You assemble a backbone of rods around the wooden stock.</span>")
 				buildstate++
 				update_icon()
 			else
-				user << "<span class='notice'>You need at least three rods to complete this task.</span>"
+				to_chat(user, "<span class='notice'>You need at least three rods to complete this task.</span>")
 			return
 	else if(istype(W, /obj/item/weapon/weldingtool))
 		if(buildstate == 1)
@@ -233,7 +238,7 @@
 			if(T.remove_fuel(0,user))
 				if(!src || !T.isOn()) return
 				playsound(src, W.usesound, 50, 1)
-				user << "<span class='notice'>You weld the rods into place.</span>"
+				to_chat(user, "<span class='notice'>You weld the rods into place.</span>")
 			buildstate++
 			update_icon()
 		return
@@ -241,33 +246,33 @@
 		var/obj/item/stack/cable_coil/C = W
 		if(buildstate == 2)
 			if(C.use(5))
-				user << "<span class='notice'>You wire a crude cell mount into the top of the crossbow.</span>"
+				to_chat(user, "<span class='notice'>You wire a crude cell mount into the top of the crossbow.</span>")
 				buildstate++
 				update_icon()
 			else
-				user << "<span class='notice'>You need at least five segments of cable coil to complete this task.</span>"
+				to_chat(user, "<span class='notice'>You need at least five segments of cable coil to complete this task.</span>")
 			return
 		else if(buildstate == 4)
 			if(C.use(5))
-				user << "<span class='notice'>You string a steel cable across the crossbow's lath.</span>"
+				to_chat(user, "<span class='notice'>You string a steel cable across the crossbow's lath.</span>")
 				buildstate++
 				update_icon()
 			else
-				user << "<span class='notice'>You need at least five segments of cable coil to complete this task.</span>"
+				to_chat(user, "<span class='notice'>You need at least five segments of cable coil to complete this task.</span>")
 			return
 	else if(istype(W,/obj/item/stack/material) && W.get_material_name() == "plastic")
 		if(buildstate == 3)
 			var/obj/item/stack/material/P = W
 			if(P.use(3))
-				user << "<span class='notice'>You assemble and install a heavy plastic lath onto the crossbow.</span>"
+				to_chat(user, "<span class='notice'>You assemble and install a heavy plastic lath onto the crossbow.</span>")
 				buildstate++
 				update_icon()
 			else
-				user << "<span class='notice'>You need at least three plastic sheets to complete this task.</span>"
+				to_chat(user, "<span class='notice'>You need at least three plastic sheets to complete this task.</span>")
 			return
 	else if(W.is_screwdriver())
 		if(buildstate == 5)
-			user << "<span class='notice'>You secure the crossbow's various parts.</span>"
+			to_chat(user, "<span class='notice'>You secure the crossbow's various parts.</span>")
 			playsound(src, W.usesound, 50, 1)
 			new /obj/item/weapon/gun/launcher/crossbow(get_turf(src))
 			qdel(src)

code/modules/projectiles/guns/launcher/grenade_launcher.dm

@@ -30,29 +30,29 @@
 	if(next)
 		grenades -= next //Remove grenade from loaded list.
 		chambered = next
-		M << "<span class='warning'>You pump [src], loading \a [next] into the chamber.</span>"
+		to_chat(M, "<span class='warning'>You pump [src], loading \a [next] into the chamber.</span>")
 	else
-		M << "<span class='warning'>You pump [src], but the magazine is empty.</span>"
+		to_chat(M, "<span class='warning'>You pump [src], but the magazine is empty.</span>")
 	update_icon()
 
 /obj/item/weapon/gun/launcher/grenade/examine(mob/user)
 	if(..(user, 2))
 		var/grenade_count = grenades.len + (chambered? 1 : 0)
-		user << "Has [grenade_count] grenade\s remaining."
+		to_chat(user, "Has [grenade_count] grenade\s remaining.")
 		if(chambered)
-			user << "\A [chambered] is chambered."
+			to_chat(user, "\A [chambered] is chambered.")
 
 /obj/item/weapon/gun/launcher/grenade/proc/load(obj/item/weapon/grenade/G, mob/user)
 	if(G.loadable)
 		if(grenades.len >= max_grenades)
-			user << "<span class='warning'>[src] is full.</span>"
+			to_chat(user, "<span class='warning'>[src] is full.</span>")
 			return
 		user.remove_from_mob(G)
 		G.loc = src
 		grenades.Insert(1, G) //add to the head of the list, so that it is loaded on the next pump
 		user.visible_message("[user] inserts \a [G] into [src].", "<span class='notice'>You insert \a [G] into [src].</span>")
 		return
-	user << "<span class='warning'>[G] doesn't seem to fit in the [src]!</span>"
+	to_chat(user, "<span class='warning'>[G] doesn't seem to fit in the [src]!</span>")
 
 /obj/item/weapon/gun/launcher/grenade/proc/unload(mob/user)
 	if(grenades.len)
@@ -62,7 +62,7 @@
 		user.visible_message("[user] removes \a [G] from [src].", "<span class='notice'>You remove \a [G] from [src].</span>")
 		playsound(src.loc, 'sound/weapons/empty.ogg', 50, 1)
 	else
-		user << "<span class='warning'>[src] is empty.</span>"
+		to_chat(user, "<span class='warning'>[src] is empty.</span>")
 
 /obj/item/weapon/gun/launcher/grenade/attack_self(mob/user)
 	pump(user)
@@ -105,14 +105,14 @@
 /obj/item/weapon/gun/launcher/grenade/underslung/load(obj/item/weapon/grenade/G, mob/user)
 	if(G.loadable)
 		if(chambered)
-			user << "<span class='warning'>[src] is already loaded.</span>"
+			to_chat(user, "<span class='warning'>[src] is already loaded.</span>")
 			return
 		user.remove_from_mob(G)
 		G.loc = src
 		chambered = G
 		user.visible_message("[user] load \a [G] into [src].", "<span class='notice'>You load \a [G] into [src].</span>")
 		return
-	user << "<span class='warning'>[G] doesn't seem to fit in the [src]!</span>"
+	to_chat(user, "<span class='warning'>[G] doesn't seem to fit in the [src]!</span>")
 
 /obj/item/weapon/gun/launcher/grenade/underslung/unload(mob/user)
 	if(chambered)
@@ -121,4 +121,4 @@
 		playsound(src.loc, 'sound/weapons/empty.ogg', 50, 1)
 		chambered = null
 	else
-		user << "<span class='warning'>[src] is empty.</span>"
+		to_chat(user, "<span class='warning'>[src] is empty.</span>")

code/modules/projectiles/guns/launcher/pneumatic.dm

@@ -35,14 +35,14 @@
 	var/N = input("Percentage of tank used per shot:","[src]") as null|anything in possible_pressure_amounts
 	if (N)
 		pressure_setting = N
-		usr << "You dial the pressure valve to [pressure_setting]%."
+		to_chat(usr, "You dial the pressure valve to [pressure_setting]%.")
 
 /obj/item/weapon/gun/launcher/pneumatic/proc/eject_tank(mob/user) //Remove the tank.
 	if(!tank)
-		user << "There's no tank in [src]."
+		to_chat(user, "There's no tank in [src].")
 		return
 
-	user << "You twist the valve and pop the tank out of [src]."
+	to_chat(user, "You twist the valve and pop the tank out of [src].")
 	user.put_in_hands(tank)
 	tank = null
 	update_icon()
@@ -52,10 +52,10 @@
 		var/obj/item/removing = item_storage.contents[item_storage.contents.len]
 		item_storage.remove_from_storage(removing, src.loc)
 		user.put_in_hands(removing)
-		user << "You remove [removing] from the hopper."
+		to_chat(user, "You remove [removing] from the hopper.")
 		playsound(src.loc, 'sound/weapons/empty.ogg', 50, 1)
 	else
-		user << "There is nothing to remove in \the [src]."
+		to_chat(user, "There is nothing to remove in \the [src].")
 
 /obj/item/weapon/gun/launcher/pneumatic/attack_hand(mob/user as mob)
 	if(user.get_inactive_hand() == src)
@@ -79,7 +79,7 @@
 	if(!item_storage.contents.len)
 		return null
 	if (!tank)
-		user << "There is no gas tank in [src]!"
+		to_chat(user, "There is no gas tank in [src]!")
 		return null
 
 	var/environment_pressure = 10
@@ -91,7 +91,7 @@
 
 	fire_pressure = (tank.air_contents.return_pressure() - environment_pressure)*pressure_setting/100
 	if(fire_pressure < 10)
-		user << "There isn't enough gas in the tank to fire [src]."
+		to_chat(user, "There isn't enough gas in the tank to fire [src].")
 		return null
 
 	var/obj/item/launched = item_storage.contents[1]
@@ -101,11 +101,11 @@
 /obj/item/weapon/gun/launcher/pneumatic/examine(mob/user)
 	if(!..(user, 2))
 		return
-	user << "The valve is dialed to [pressure_setting]%."
+	to_chat(user, "The valve is dialed to [pressure_setting]%.")
 	if(tank)
-		user << "The tank dial reads [tank.air_contents.return_pressure()] kPa."
+		to_chat(user, "The tank dial reads [tank.air_contents.return_pressure()] kPa.")
 	else
-		user << "Nothing is attached to the tank valve!"
+		to_chat(user, "Nothing is attached to the tank valve!")
 
 /obj/item/weapon/gun/launcher/pneumatic/update_release_force(obj/item/projectile)
 	if(tank)
@@ -152,18 +152,23 @@
 /obj/item/weapon/cannonframe/examine(mob/user)
 	..(user)
 	switch(buildstate)
-		if(1) user << "It has a pipe segment installed."
-		if(2) user << "It has a pipe segment welded in place."
-		if(3) user << "It has an outer chassis installed."
-		if(4) user << "It has an outer chassis welded in place."
-		if(5) user << "It has a transfer valve installed."
+		if(1)
+			to_chat(user, "It has a pipe segment installed.")
+		if(2)
+			to_chat(user, "It has a pipe segment welded in place.")
+		if(3)
+			to_chat(user, "It has an outer chassis installed.")
+		if(4)
+			to_chat(user, "It has an outer chassis welded in place.")
+		if(5)
+			to_chat(user, "It has a transfer valve installed.")
 
 /obj/item/weapon/cannonframe/attackby(obj/item/W as obj, mob/user as mob)
 	if(istype(W,/obj/item/pipe))
 		if(buildstate == 0)
 			user.drop_from_inventory(W)
 			qdel(W)
-			user << "<span class='notice'>You secure the piping inside the frame.</span>"
+			to_chat(user, "<span class='notice'>You secure the piping inside the frame.</span>")
 			buildstate++
 			update_icon()
 			return
@@ -171,17 +176,17 @@
 		if(buildstate == 2)
 			var/obj/item/stack/material/M = W
 			if(M.use(5))
-				user << "<span class='notice'>You assemble a chassis around the cannon frame.</span>"
+				to_chat(user, "<span class='notice'>You assemble a chassis around the cannon frame.</span>")
 				buildstate++
 				update_icon()
 			else
-				user << "<span class='notice'>You need at least five metal sheets to complete this task.</span>"
+				to_chat(user, "<span class='notice'>You need at least five metal sheets to complete this task.</span>")
 			return
 	else if(istype(W,/obj/item/device/transfer_valve))
 		if(buildstate == 4)
 			user.drop_from_inventory(W)
 			qdel(W)
-			user << "<span class='notice'>You install the transfer valve and connect it to the piping.</span>"
+			to_chat(user, "<span class='notice'>You install the transfer valve and connect it to the piping.</span>")
 			buildstate++
 			update_icon()
 			return
@@ -191,7 +196,7 @@
 			if(T.remove_fuel(0,user))
 				if(!src || !T.isOn()) return
 				playsound(src, W.usesound, 100, 1)
-				user << "<span class='notice'>You weld the pipe into place.</span>"
+				to_chat(user, "<span class='notice'>You weld the pipe into place.</span>")
 				buildstate++
 				update_icon()
 		if(buildstate == 3)
@@ -199,7 +204,7 @@
 			if(T.remove_fuel(0,user))
 				if(!src || !T.isOn()) return
 				playsound(src, W.usesound, 100, 1)
-				user << "<span class='notice'>You weld the metal chassis together.</span>"
+				to_chat(user, "<span class='notice'>You weld the metal chassis together.</span>")
 				buildstate++
 				update_icon()
 		if(buildstate == 5)
@@ -207,7 +212,7 @@
 			if(T.remove_fuel(0,user))
 				if(!src || !T.isOn()) return
 				playsound(src, W.usesound, 100, 1)
-				user << "<span class='notice'>You weld the valve into place.</span>"
+				to_chat(user, "<span class='notice'>You weld the valve into place.</span>")
 				new /obj/item/weapon/gun/launcher/pneumatic(get_turf(src))
 				qdel(src)
 		return

code/modules/projectiles/guns/launcher/rocket.dm

@@ -19,7 +19,7 @@
 /obj/item/weapon/gun/launcher/rocket/examine(mob/user)
 	if(!..(user, 2))
 		return
-	user << "<font color='blue'>[rockets.len] / [max_rockets] rockets.</font>"
+	to_chat(user, "<font color='blue'>[rockets.len] / [max_rockets] rockets.</font>")
 
 /obj/item/weapon/gun/launcher/rocket/attackby(obj/item/I as obj, mob/user as mob)
 	if(istype(I, /obj/item/ammo_casing/rocket))
@@ -27,10 +27,10 @@
 			user.drop_item()
 			I.loc = src
 			rockets += I
-			user << "<font color='blue'>You put the rocket in [src].</font>"
-			user << "<font color='blue'>[rockets.len] / [max_rockets] rockets.</font>"
+			to_chat(user, "<font color='blue'>You put the rocket in [src].</font>")
+			to_chat(user, "<font color='blue'>[rockets.len] / [max_rockets] rockets.</font>")
 		else
-			usr << "<font color='red'>[src] cannot hold more rockets.</font>"
+			to_chat(usr, "<font color='red'>[src] cannot hold more rockets.</font>")
 
 /obj/item/weapon/gun/launcher/rocket/consume_next_projectile()
 	if(rockets.len)

code/modules/projectiles/guns/launcher/syringe_gun.dm

@@ -20,7 +20,7 @@
 /obj/item/weapon/syringe_cartridge/attackby(obj/item/I, mob/user)
 	if(istype(I, /obj/item/weapon/reagent_containers/syringe))
 		syringe = I
-		user << "<span class='notice'>You carefully insert [syringe] into [src].</span>"
+		to_chat(user, "<span class='notice'>You carefully insert [syringe] into [src].</span>")
 		user.remove_from_mob(syringe)
 		syringe.loc = src
 		sharp = 1
@@ -29,7 +29,7 @@
 
 /obj/item/weapon/syringe_cartridge/attack_self(mob/user)
 	if(syringe)
-		user << "<span class='notice'>You remove [syringe] from [src].</span>"
+		to_chat(user, "<span class='notice'>You remove [syringe] from [src].</span>")
 		playsound(src.loc, 'sound/weapons/empty.ogg', 50, 1)
 		user.put_in_hands(syringe)
 		syringe = null
@@ -105,10 +105,10 @@
 /obj/item/weapon/gun/launcher/syringe/attack_hand(mob/living/user as mob)
 	if(user.get_inactive_hand() == src)
 		if(!darts.len)
-			user << "<span class='warning'>[src] is empty.</span>"
+			to_chat(user, "<span class='warning'>[src] is empty.</span>")
 			return
 		if(next)
-			user << "<span class='warning'>[src]'s cover is locked shut.</span>"
+			to_chat(user, "<span class='warning'>[src]'s cover is locked shut.</span>")
 			return
 		var/obj/item/weapon/syringe_cartridge/C = darts[1]
 		darts -= C
@@ -122,7 +122,7 @@
 	if(istype(A, /obj/item/weapon/syringe_cartridge))
 		var/obj/item/weapon/syringe_cartridge/C = A
 		if(darts.len >= max_darts)
-			user << "<span class='warning'>[src] is full!</span>"
+			to_chat(user, "<span class='warning'>[src] is full!</span>")
 			return
 		user.remove_from_mob(C)
 		C.loc = src