linters do your magic (#19263)

code/modules/paperwork/folders.dm

@@ -40,7 +40,7 @@
 		W.loc = src
 		to_chat(user, "<span class='notice'>You put [W] into [src].</span>")
 		update_icon(UPDATE_OVERLAYS)
-	else if(istype(W, /obj/item/pen))
+	else if(is_pen(W))
 		rename_interactive(user, W)
 	else
 		return ..()

code/modules/paperwork/frames.dm

@@ -96,7 +96,7 @@
 	return TRUE
 
 /obj/item/picture_frame/afterattack(atom/target, mob/user, proximity_flag)
-	if(proximity_flag && istype(target, /turf/simulated/wall))
+	if(proximity_flag && iswallturf(target))
 		place(target, user)
 	else
 		..()
@@ -146,7 +146,7 @@
 
 /obj/item/picture_frame/attack_self(mob/user)
 	if(displayed)
-		if(istype(displayed, /obj/item))
+		if(isitem(displayed))
 			var/obj/item/I = displayed
 			I.attack_self(user)
 	else

code/modules/paperwork/paper.dm

@@ -317,7 +317,7 @@
 		var/t =  input("Enter what you want to write:", "Write", null, null)  as message
 		var/obj/item/i = usr.get_active_hand() // Check to see if he still got that darn pen, also check if he's using a crayon or pen.
 		add_hiddenprint(usr) // No more forging nasty documents as someone else, you jerks
-		if(!istype(i, /obj/item/pen))
+		if(!is_pen(i))
 			if(!istype(i, /obj/item/toy/crayon))
 				return
 
@@ -411,7 +411,7 @@
 		B.amount++
 		B.update_icon()
 
-	else if(istype(P, /obj/item/pen) || istype(P, /obj/item/toy/crayon))
+	else if(is_pen(P) || istype(P, /obj/item/toy/crayon))
 		if(user.is_literate())
 			var/obj/item/pen/multi/robopen/RP = P
 			if(istype(P, /obj/item/pen/multi/robopen) && RP.mode == 2)
@@ -677,7 +677,7 @@
 
 /obj/item/paper/evilfax/show_content(mob/user, forceshow = 0, forcestars = 0, infolinks = 0, view = 1)
 	if(user == mytarget)
-		if(istype(user, /mob/living/carbon))
+		if(iscarbon(user))
 			var/mob/living/carbon/C = user
 			evilpaper_specialaction(C)
 			..()
@@ -720,7 +720,7 @@
 
 /obj/item/paper/evilfax/proc/evilpaper_specialaction(mob/living/carbon/target)
 	spawn(30)
-		if(istype(target, /mob/living/carbon))
+		if(iscarbon(target))
 			var/obj/machinery/photocopier/faxmachine/fax = locateUID(faxmachineid)
 			if(myeffect == "Borgification")
 				to_chat(target,"<span class='userdanger'>You seem to comprehend the AI a little better. Why are your muscles so stiff?</span>")

code/modules/paperwork/paper_bundle.dm

@@ -67,7 +67,7 @@
 		to_chat(user, "<span class='notice'>You add \the [W.name] to [(src.name == "paper bundle") ? "the paper bundle" : src.name].</span>")
 		qdel(W)
 	else
-		if(istype(W, /obj/item/pen) || istype(W, /obj/item/toy/crayon))
+		if(is_pen(W) || istype(W, /obj/item/toy/crayon))
 			usr << browse("", "window=PaperBundle[UID()]") //Closes the dialog
 		P = src[page]
 		P.attackby(W, user, params)

code/modules/paperwork/paperplane.dm

@@ -62,7 +62,7 @@
 /obj/item/paperplane/attackby(obj/item/P, mob/living/carbon/human/user, params)
 	..()
 
-	if(istype(P, /obj/item/pen) || istype(P, /obj/item/toy/crayon))
+	if(is_pen(P) || istype(P, /obj/item/toy/crayon))
 		to_chat(user, "<span class='notice'>You should unfold [src] before changing it.</span>")
 		return
 

code/modules/paperwork/photography.dm

@@ -40,7 +40,7 @@
 	user.examinate(src)
 
 /obj/item/photo/attackby(obj/item/P as obj, mob/user as mob, params)
-	if(istype(P, /obj/item/pen) || istype(P, /obj/item/toy/crayon))
+	if(is_pen(P) || istype(P, /obj/item/toy/crayon))
 		var/txt = sanitize(input(user, "What would you like to write on the back?", "Photo Writing", null)  as text)
 		txt = copytext(txt, 1, 128)
 		if(loc == user && user.stat == 0)
@@ -288,7 +288,7 @@ GLOBAL_LIST_INIT(SpookyGhosts, list("ghost","shade","shade2","ghost-narsie","hor
 			// If what we got back is actually a picture, draw it.
 			if(istype(img, /icon))
 				// Check if we're looking at a mob that's lying down
-				if(istype(A, /mob/living))
+				if(isliving(A))
 					var/mob/living/L = A
 					if(IS_HORIZONTAL(L))
 						// If they are, apply that effect to their picture.
@@ -327,7 +327,7 @@ GLOBAL_LIST_INIT(SpookyGhosts, list("ghost","shade","shade2","ghost-narsie","hor
 
 		var/holding = null
 
-		if(istype(M, /mob/living/carbon))
+		if(iscarbon(M))
 			var/mob/living/carbon/A = M
 			if(A.l_hand || A.r_hand)
 				if(A.l_hand) holding = "They are holding \a [A.l_hand]"