Rewrite examine() to pass a list around

code/ATMOSPHERICS/components/unary/cold_sink.dm

@@ -178,6 +178,6 @@
 	..()
 
 /obj/machinery/atmospherics/unary/freezer/examine(mob/user)
-	..(user)
+	. = ..()
 	if(panel_open)
-		to_chat(user, "The maintenance hatch is open.")
+		. += "The maintenance hatch is open."

code/ATMOSPHERICS/components/unary/heat_source.dm

@@ -165,6 +165,6 @@
 	..()
 
 /obj/machinery/atmospherics/unary/heater/examine(mob/user)
-	..(user)
+	..()
 	if(panel_open)
-		to_chat(user, "The maintenance hatch is open.")
+		. += "The maintenance hatch is open."

code/ATMOSPHERICS/components/unary/vent_pump.dm

@@ -414,12 +414,13 @@
 		..()
 
 /obj/machinery/atmospherics/unary/vent_pump/examine(mob/user)
-	if(..(user, 1))
-		to_chat(user, "A small gauge in the corner reads [round(last_flow_rate, 0.1)] L/s; [round(last_power_draw)] W")
+	. = ..()
+	if(Adjacent(user))
+		. += "A small gauge in the corner reads [round(last_flow_rate, 0.1)] L/s; [round(last_power_draw)] W"
 	else
-		to_chat(user, "You are too far away to read the gauge.")
+		. += "You are too far away to read the gauge."
 	if(welded)
-		to_chat(user, "It seems welded shut.")
+		. += "It seems welded shut."
 
 /obj/machinery/atmospherics/unary/vent_pump/power_change()
 	var/old_stat = stat

code/ATMOSPHERICS/components/unary/vent_scrubber.dm

@@ -287,7 +287,8 @@
 		deconstruct()
 
 /obj/machinery/atmospherics/unary/vent_scrubber/examine(mob/user)
-	if(..(user, 1))
-		to_chat(user, "A small gauge in the corner reads [round(last_flow_rate, 0.1)] L/s; [round(last_power_draw)] W")
+	. = ..()
+	if(Adjacent(user))
+		. += "A small gauge in the corner reads [round(last_flow_rate, 0.1)] L/s; [round(last_power_draw)] W"
 	else
-		to_chat(user, "You are too far away to read the gauge.")
+		. += "You are too far away to read the gauge."