diff --git a/src/f_finale.c b/src/f_finale.c
index c6d957292138915a6def4b975648e81e708cfd5a..49ff820d5a524cff7cf97bb9c1ef03addf002046 100644
--- a/src/f_finale.c
+++ b/src/f_finale.c
@@ -4589,9 +4589,9 @@ void F_TextPromptDrawer(void)
 		players[j].powers[pw_nocontrol] = 1;\
 		if (players[j].mo)\
 		{\
-			if (players[j].mo->state == states+S_PLAY_STND && players[j].mo->tics != -1)\
+			if (P_IsPlayerInState(&players[j], S_PLAY_STND) && players[j].mo->tics != -1)\
 				players[j].mo->tics++;\
-			else if (players[j].mo->state == states+S_PLAY_WAIT)\
+			else if (P_IsPlayerInState(&players[j], S_PLAY_WAIT))\
 				P_SetMobjState(players[j].mo, S_PLAY_STND);\
 		}\
 	}
diff --git a/src/p_enemy.c b/src/p_enemy.c
index 7091af5429e834c098ba7d81ace6961cc238e37f..a810176b05a1002113b27f1f4e5d4b62e0ff9265 100644
--- a/src/p_enemy.c
+++ b/src/p_enemy.c
@@ -6109,7 +6109,7 @@ void A_UnidusBall(mobj_t *actor)
 	else if (locvar1 == 2)
 	{
 		boolean skull = (actor->target->flags2 & MF2_SKULLFLY) == MF2_SKULLFLY;
-		if (actor->target->state == &states[actor->target->info->painstate])
+		if (P_IsMobjInPainState(actor->target))
 		{
 			P_KillMobj(actor, NULL, NULL, 0);
 			return;
diff --git a/src/p_inter.c b/src/p_inter.c
index 620d37c5bf680c682a38b64b18c4225bb9e7b733..c9d0d39647914cc16c2c2a893e9e8a0e1c980812 100644
--- a/src/p_inter.c
+++ b/src/p_inter.c
@@ -412,7 +412,7 @@ void P_TouchSpecialThing(mobj_t *special, mobj_t *toucher, boolean heightcheck)
 	{
 		if (special->type == MT_STEAM)
 		{
-			if (player && player->mo->state == &states[player->mo->info->painstate]) // can't use gas jets when player is in pain!
+			if (player && P_IsPlayerInState(player, S_PLAY_PAIN)) // can't use gas jets when player is in pain!
 				return;
 
 			fixed_t speed = special->info->mass; // gas jets use this for the vertical thrust
@@ -1820,7 +1820,7 @@ void P_TouchSpecialThing(mobj_t *special, mobj_t *toucher, boolean heightcheck)
 
 			if (!player->climbing)
 			{
-				if (player->bot && player->bot != BOT_MPAI && toucher->state-states != S_PLAY_GASP)
+				if (player->bot && player->bot != BOT_MPAI && !P_IsPlayerInState(player, S_PLAY_GASP))
 					S_StartSound(toucher, special->info->deathsound); // Force it to play a sound for bots
 				P_SetMobjState(toucher, S_PLAY_GASP);
 				P_ResetPlayer(player);
@@ -1839,8 +1839,8 @@ void P_TouchSpecialThing(mobj_t *special, mobj_t *toucher, boolean heightcheck)
 				special->z = toucher->z+toucher->height-FixedMul(8*FRACUNIT, special->scale);
 				special->momz = 0;
 				special->flags |= MF_NOGRAVITY;
-				P_SetMobjState (special, special->info->deathstate);
-				S_StartSound (special, special->info->deathsound+(P_RandomKey(special->info->mass)));
+				P_SetMobjState(special, special->info->deathstate);
+				S_StartSound(special, special->info->deathsound+(P_RandomKey(special->info->mass)));
 			}
 			return;
 
diff --git a/src/p_local.h b/src/p_local.h
index 85a31cf8982114068b0da41c7a59971d011929ba..814f5b1a3d6a618c2c05c69a0855ef5e444a7aa1 100644
--- a/src/p_local.h
+++ b/src/p_local.h
@@ -130,6 +130,10 @@ boolean P_TryCameraMove(fixed_t x, fixed_t y, camera_t *thiscam);
 void P_SlideCameraMove(camera_t *thiscam);
 boolean P_MoveChaseCamera(player_t *player, camera_t *thiscam, boolean resetcalled);
 pflags_t P_GetJumpFlags(player_t *player);
+statenum_t P_GetCanonicalPlayerState(player_t *player, statenum_t state);
+boolean P_IsPlayerInState(player_t *player, statenum_t state);
+boolean P_IsPlayerInSuperTransformationState(player_t *player);
+boolean P_IsPlayerInNightsTransformationState(player_t *player);
 boolean P_PlayerInPain(player_t *player);
 void P_DoPlayerPain(player_t *player, mobj_t *source, mobj_t *inflictor);
 void P_ResetPlayer(player_t *player);
@@ -553,5 +557,6 @@ void P_DoSuperDetransformation(player_t *player);
 void P_ExplodeMissile(mobj_t *mo);
 void P_CheckGravity(mobj_t *mo, boolean affect);
 void P_SetPitchRollFromSlope(mobj_t *mo, pslope_t *slope);
+boolean P_IsMobjInPainState(mobj_t *mobj);
 
 #endif // __P_LOCAL__
diff --git a/src/p_map.c b/src/p_map.c
index 337344b2fec2c966d0774513c02d9397b2974382..4a4dffc695ac97f3c70ebb68e22d1bea7b238409 100644
--- a/src/p_map.c
+++ b/src/p_map.c
@@ -508,7 +508,7 @@ static void P_DoFan(mobj_t *fan, mobj_t *object)
 	fixed_t speed = fan->info->mass; // fans use this for the vertical thrust
 	SINT8 flipval = P_MobjFlip(fan); // virtually everything here centers around the thruster's gravity, not the object's!
 
-	if (p && object->state == &states[object->info->painstate]) // can't use fans when player is in pain!
+	if (p && P_IsPlayerInState(p, S_PLAY_PAIN)) // can't use fans when player is in pain!
 		return;
 
 	// is object's top below thruster's position? if not, calculate distance between their bottoms
@@ -3033,7 +3033,7 @@ static boolean P_ThingHeightClip(mobj_t *thing)
 	if (tmfloorz > oldfloorz+thing->height)
 		return true;
 
-	bouncing = thing->player && thing->state-states == S_PLAY_BOUNCE_LANDING && P_IsObjectOnGround(thing);
+	bouncing = thing->player && P_IsPlayerInState(thing->player, S_PLAY_BOUNCE_LANDING) && P_IsObjectOnGround(thing);
 
 	if ((onfloor || bouncing) && !(thing->flags & MF_NOGRAVITY) && floormoved)
 	{
diff --git a/src/p_mobj.c b/src/p_mobj.c
index e758563f4180f06782d71569e66da540073a997f..f81c725c84dc7f58d04b762c5cbcfd6322a7951c 100644
--- a/src/p_mobj.c
+++ b/src/p_mobj.c
@@ -36,6 +36,7 @@
 #include "p_slopes.h"
 #include "f_finale.h"
 #include "m_cond.h"
+#include "simple_hashmap.h"
 #include "netcode/net_command.h"
 
 static CV_PossibleValue_t CV_BobSpeed[] = {{0, "MIN"}, {4*FRACUNIT, "MAX"}, {0, NULL}};
@@ -178,6 +179,61 @@ static void P_CycleMobjState(mobj_t *mobj)
 	}
 }
 
+static panim_t GetPlayerAnimationFromState(player_t *player, statenum_t state)
+{
+	switch(P_GetCanonicalPlayerState(player, state))
+	{
+	case S_PLAY_STND:
+	case S_PLAY_WAIT:
+	case S_PLAY_NIGHTS_STAND:
+		return PA_IDLE;
+	case S_PLAY_EDGE:
+		return PA_EDGE;
+	case S_PLAY_WALK:
+	case S_PLAY_SKID:
+	case S_PLAY_FLOAT:
+		return PA_WALK;
+	case S_PLAY_RUN:
+	case S_PLAY_FLOAT_RUN:
+		return PA_RUN;
+	case S_PLAY_DASH:
+		return PA_DASH;
+	case S_PLAY_PAIN:
+	case S_PLAY_STUN:
+		return PA_PAIN;
+	case S_PLAY_ROLL:
+	//case S_PLAY_SPINDASH: -- everyone can ROLL thanks to zoom tubes...
+	case S_PLAY_NIGHTS_ATTACK:
+		return PA_ROLL;
+	case S_PLAY_JUMP:
+		return PA_JUMP;
+	case S_PLAY_SPRING:
+		return PA_SPRING;
+	case S_PLAY_FALL:
+	case S_PLAY_NIGHTS_FLOAT:
+		return PA_FALL;
+	case S_PLAY_FLY:
+	case S_PLAY_FLY_TIRED:
+	case S_PLAY_SWIM:
+	case S_PLAY_GLIDE:
+	case S_PLAY_BOUNCE:
+	case S_PLAY_BOUNCE_LANDING:
+	case S_PLAY_TWINSPIN:
+		return PA_ABILITY;
+	case S_PLAY_SPINDASH: // ...but the act of SPINDASHING is charability2 specific.
+	case S_PLAY_FIRE:
+	case S_PLAY_FIRE_FINISH:
+	case S_PLAY_MELEE:
+	case S_PLAY_MELEE_FINISH:
+	case S_PLAY_MELEE_LANDING:
+		return PA_ABILITY2;
+	case S_PLAY_RIDE:
+		return PA_RIDE;
+	default:
+		return PA_ETC;
+	}
+}
+
 //
 // P_SetPlayerMobjState
 // Returns true if the mobj is still present.
@@ -201,6 +257,12 @@ static boolean P_SetPlayerMobjState(mobj_t *mobj, statenum_t state)
 		I_Error("P_SetPlayerMobjState used for non-player mobj. Use P_SetMobjState instead!\n(Mobj type: %d, State: %d)", mobj->type, state);
 #endif
 
+	// If the state has been overriden for this skin, use the replacement instead
+	statenum_t customskinstate;
+	SIMPLEHASH_FIND_INT(skins[player->skin]->defaulttocustomstate, hashentry_int32_int32_t, state, S_NULL, customskinstate)
+	if (customskinstate)
+		state = customskinstate;
+
 	// Catch falling for nojumpspin
 	if ((state == S_PLAY_JUMP) && (player->charflags & SF_NOJUMPSPIN) && (P_MobjFlip(mobj)*mobj->momz < 0))
 		return P_SetPlayerMobjState(mobj, S_PLAY_FALL);
@@ -222,88 +284,24 @@ static boolean P_SetPlayerMobjState(mobj_t *mobj, statenum_t state)
 	{
 		if (state == S_PLAY_JUMP)
 		{
-			if (player->mo->state-states == S_PLAY_WALK)
+			if (P_IsPlayerInState(player, S_PLAY_WALK))
 				return P_SetPlayerMobjState(mobj, S_PLAY_FLOAT);
 			return true;
 		}
-		else if (player->mo->state-states == S_PLAY_FLOAT && state == S_PLAY_STND)
+		else if (P_IsPlayerInState(player, S_PLAY_FLOAT) && state == S_PLAY_STND)
 			return true;
 	}
 	// You were in pain state after taking a hit, and you're moving out of pain state now?
-	else if (mobj->state == &states[mobj->info->painstate] && player->powers[pw_flashing] == flashingtics && state != mobj->info->painstate)
+	else if (P_IsPlayerInState(player, S_PLAY_PAIN)
+	&& player->powers[pw_flashing] == flashingtics
+	&& P_GetCanonicalPlayerState(player, state) != S_PLAY_PAIN)
 	{
 		// Start flashing, since you've landed.
 		player->powers[pw_flashing] = flashingtics-1;
 		P_DoPityCheck(player);
 	}
 
-	// Set animation state
-	// The pflags version of this was just as convoluted.
-	switch(state)
-	{
-	case S_PLAY_STND:
-	case S_PLAY_WAIT:
-	case S_PLAY_NIGHTS_STAND:
-		player->panim = PA_IDLE;
-		break;
-	case S_PLAY_EDGE:
-		player->panim = PA_EDGE;
-		break;
-	case S_PLAY_WALK:
-	case S_PLAY_SKID:
-	case S_PLAY_FLOAT:
-		player->panim = PA_WALK;
-		break;
-	case S_PLAY_RUN:
-	case S_PLAY_FLOAT_RUN:
-		player->panim = PA_RUN;
-		break;
-	case S_PLAY_DASH:
-		player->panim = PA_DASH;
-		break;
-	case S_PLAY_PAIN:
-	case S_PLAY_STUN:
-		player->panim = PA_PAIN;
-		break;
-	case S_PLAY_ROLL:
-	//case S_PLAY_SPINDASH: -- everyone can ROLL thanks to zoom tubes...
-	case S_PLAY_NIGHTS_ATTACK:
-		player->panim = PA_ROLL;
-		break;
-	case S_PLAY_JUMP:
-		player->panim = PA_JUMP;
-		break;
-	case S_PLAY_SPRING:
-		player->panim = PA_SPRING;
-		break;
-	case S_PLAY_FALL:
-	case S_PLAY_NIGHTS_FLOAT:
-		player->panim = PA_FALL;
-		break;
-	case S_PLAY_FLY:
-	case S_PLAY_FLY_TIRED:
-	case S_PLAY_SWIM:
-	case S_PLAY_GLIDE:
-	case S_PLAY_BOUNCE:
-	case S_PLAY_BOUNCE_LANDING:
-	case S_PLAY_TWINSPIN:
-		player->panim = PA_ABILITY;
-		break;
-	case S_PLAY_SPINDASH: // ...but the act of SPINDASHING is charability2 specific.
-	case S_PLAY_FIRE:
-	case S_PLAY_FIRE_FINISH:
-	case S_PLAY_MELEE:
-	case S_PLAY_MELEE_FINISH:
-	case S_PLAY_MELEE_LANDING:
-		player->panim = PA_ABILITY2;
-		break;
-	case S_PLAY_RIDE:
-		player->panim = PA_RIDE;
-		break;
-	default:
-		player->panim = PA_ETC;
-		break;
-	}
+	player->panim = GetPlayerAnimationFromState(player, state);
 
 	if (recursion++) // if recursion detected,
 		memset(seenstate = tempstate, 0, sizeof tempstate); // clear state table
@@ -3717,7 +3715,7 @@ static void P_PlayerMobjThinker(mobj_t *mobj)
 	// momentum movement
 	mobj->eflags &= ~MFE_JUSTSTEPPEDDOWN;
 
-	if (mobj->state-states == S_PLAY_BOUNCE_LANDING)
+	if (P_IsPlayerInState(mobj->player, S_PLAY_BOUNCE_LANDING))
 		goto animonly; // no need for checkposition - doesn't move at ALL
 
 	// Zoom tube
@@ -14365,3 +14363,11 @@ mobj_t *P_SpawnMobjFromMobj(mobj_t *mobj, fixed_t xofs, fixed_t yofs, fixed_t zo
 
 	return newmobj;
 }
+
+boolean P_IsMobjInPainState(mobj_t *mobj)
+{
+	if (mobj->player)
+		return P_IsPlayerInState(mobj->player, S_PLAY_PAIN);
+	else
+		return (mobj->state == &states[mobj->info->painstate]);
+}
diff --git a/src/p_spec.c b/src/p_spec.c
index 649f63518eed2017cbfd06817eb322d27280d52e..394de0167de8b517e396752ea8a374d63a6143cc 100644
--- a/src/p_spec.c
+++ b/src/p_spec.c
@@ -4677,7 +4677,7 @@ static void P_ProcessZoomTube(player_t *player, mtag_t sectag, boolean end)
 	player->pflags &= ~(PF_JUMPED|PF_NOJUMPDAMAGE|PF_GLIDING|PF_BOUNCING|PF_SLIDING|PF_CANCARRY);
 	player->climbing = 0;
 
-	if (player->mo->state-states != S_PLAY_ROLL)
+	if (!P_IsPlayerInState(player, S_PLAY_ROLL))
 	{
 		P_SetMobjState(player->mo, S_PLAY_ROLL);
 		S_StartSound(player->mo, sfx_spin);
@@ -4758,7 +4758,7 @@ static void P_ProcessRopeHang(player_t *player, mtag_t sectag)
 	if (player->cmd.buttons & BT_SPIN)
 		return;
 
-	if (!(player->pflags & PF_SLIDING) && player->mo->state == &states[player->mo->info->painstate])
+	if (!(player->pflags & PF_SLIDING) && P_IsPlayerInState(player, S_PLAY_PAIN))
 		return;
 
 	if (player->exiting)
@@ -8805,7 +8805,7 @@ void T_Pusher(pusher_t *p)
 		if (thing->player && thing->player->powers[pw_carry] == CR_ROPEHANG)
 			continue;
 
-		if (thing->player && (thing->state == &states[thing->info->painstate]) && (thing->player->powers[pw_flashing] > (flashingtics/4)*3 && thing->player->powers[pw_flashing] <= flashingtics))
+		if (thing->player && P_IsPlayerInState(thing->player, S_PLAY_PAIN) && (thing->player->powers[pw_flashing] > (flashingtics/4)*3 && thing->player->powers[pw_flashing] <= flashingtics))
 			continue;
 
 		inFOF = touching = moved = false;
diff --git a/src/p_user.c b/src/p_user.c
index ba22808eade2a389dc6c7bf56383fcd6149c033d..ad757d1e56edb9a2e4d1e593658c28d73c26c862 100644
--- a/src/p_user.c
+++ b/src/p_user.c
@@ -47,6 +47,7 @@
 #include "m_cheat.h"
 // Thok camera snap (ctrl-f "chalupa")
 #include "g_input.h"
+#include "simple_hashmap.h"
 
 #ifdef HW3SOUND
 #include "hardware/hw3sound.h"
@@ -968,6 +969,33 @@ pflags_t P_GetJumpFlags(player_t *player)
 	return PF_JUMPED;
 }
 
+// If the state is a custom state for the player's skin, retrieve its "canonical" state
+// e.g. S_SKIN_BIGTHECAT_WALK => S_PLAY_WALK
+statenum_t P_GetCanonicalPlayerState(player_t *player, statenum_t state)
+{
+	skin_t *skin = skins[player->skin];
+	statenum_t mappedstate;
+	SIMPLEHASH_FIND_INT(skin->customtodefaultstate, hashentry_int32_int32_t, state, state, mappedstate)
+	return mappedstate;
+}
+
+boolean P_IsPlayerInState(player_t *player, statenum_t state)
+{
+	return (P_GetCanonicalPlayerState(player, player->mo->state - states) == state);
+}
+
+boolean P_IsPlayerInSuperTransformationState(player_t *player)
+{
+	statenum_t state = player->mo->state - states;
+	return (state >= S_PLAY_SUPER_TRANS1 && state <= S_PLAY_SUPER_TRANS6);
+}
+
+boolean P_IsPlayerInNightsTransformationState(player_t *player)
+{
+	statenum_t state = player->mo->state - states;
+	return (state >= S_PLAY_NIGHTS_TRANS1 && state <= S_PLAY_NIGHTS_TRANS6);
+}
+
 //
 // P_PlayerInPain
 //
@@ -983,7 +1011,7 @@ boolean P_PlayerInPain(player_t *player)
 	if (!(player->pflags & PF_SLIDING) && player->mo->state == &states[player->mo->info->painstate] && player->powers[pw_flashing])
 		return true;
 
-	if (player->mo->state == &states[S_PLAY_STUN])
+	if (P_IsPlayerInState(player, S_PLAY_STUN))
 		return true;
 
 	return false;
@@ -1007,7 +1035,7 @@ void P_DoPlayerPain(player_t *player, mobj_t *source, mobj_t *inflictor)
 		fixed_t fallbackspeed;
 
 		P_ResetPlayer(player);
-		P_SetMobjState(player->mo, player->mo->info->painstate);
+		P_SetMobjState(player->mo, S_PLAY_PAIN);
 
 		if (player->mo->eflags & MFE_VERTICALFLIP)
 			player->mo->z--;
@@ -2390,7 +2418,7 @@ boolean P_PlayerHitFloor(player_t *player, boolean dorollstuff)
 
 		if (player->pflags & PF_BOUNCING)
 		{
-			if (dorollstuff && player->mo->state-states != S_PLAY_BOUNCE_LANDING)
+			if (dorollstuff && !P_IsPlayerInState(player, S_PLAY_BOUNCE_LANDING))
 			{
 				P_MobjCheckWater(player->mo);
 				player->mo->momz *= -1;
@@ -2427,9 +2455,9 @@ boolean P_PlayerHitFloor(player_t *player, boolean dorollstuff)
 					player->pflags &= ~PF_GLIDING;
 			}
 			else if (player->charability == CA_GLIDEANDCLIMB && player->pflags & PF_THOKKED && !(player->pflags & (PF_JUMPED|PF_SHIELDABILITY))
-			&& (player->mo->floorz != player->mo->watertop) && player->mo->state-states == S_PLAY_FALL)
+			&& (player->mo->floorz != player->mo->watertop) && P_IsPlayerInState(player, S_PLAY_FALL))
 			{
-				if (player->mo->state-states != S_PLAY_GLIDE_LANDING)
+				if (!P_IsPlayerInState(player, S_PLAY_GLIDE_LANDING))
 				{
 					P_ResetPlayer(player);
 					P_SetMobjState(player->mo, S_PLAY_GLIDE_LANDING);
@@ -2450,7 +2478,7 @@ boolean P_PlayerHitFloor(player_t *player, boolean dorollstuff)
 			else if (player->charability2 == CA2_MELEE
 				&& ((player->panim == PA_ABILITY2) || (player->charability == CA_TWINSPIN && player->panim == PA_ABILITY && player->cmd.buttons & (BT_JUMP|BT_SPIN))))
 			{
-				if (player->mo->state-states != S_PLAY_MELEE_LANDING)
+				if (!P_IsPlayerInState(player, S_PLAY_MELEE_LANDING))
 				{
 					mobjtype_t type = player->revitem;
 					P_SetMobjState(player->mo, S_PLAY_MELEE_LANDING);
@@ -2498,7 +2526,7 @@ boolean P_PlayerHitFloor(player_t *player, boolean dorollstuff)
 					}
 				}
 			}
-			else if (player->charability == CA_GLIDEANDCLIMB && (player->mo->state-states == S_PLAY_GLIDE_LANDING))
+			else if (player->charability == CA_GLIDEANDCLIMB && (P_IsPlayerInState(player, S_PLAY_GLIDE_LANDING)))
 				;
 			else if (player->charability2 == CA2_GUNSLINGER && player->panim == PA_ABILITY2)
 				;
@@ -2521,10 +2549,10 @@ boolean P_PlayerHitFloor(player_t *player, boolean dorollstuff)
 					if (player->charflags & SF_DASHMODE && player->dashmode >= DASHMODE_THRESHOLD && player->panim != PA_DASH)
 						P_SetMobjState(player->mo, S_PLAY_DASH);
 					else if (player->speed >= runspd
-					&& (player->panim != PA_RUN || player->mo->state-states == S_PLAY_FLOAT_RUN))
+					&& (player->panim != PA_RUN || P_IsPlayerInState(player, S_PLAY_FLOAT_RUN)))
 						P_SetMobjState(player->mo, S_PLAY_RUN);
 					else if ((player->rmomx || player->rmomy)
-					&& (player->panim != PA_WALK || player->mo->state-states == S_PLAY_FLOAT))
+					&& (player->panim != PA_WALK || P_IsPlayerInState(player, S_PLAY_FLOAT)))
 						P_SetMobjState(player->mo, S_PLAY_WALK);
 					else if (!player->rmomx && !player->rmomy && player->panim != PA_IDLE)
 						P_SetMobjState(player->mo, S_PLAY_STND);
@@ -2534,10 +2562,10 @@ boolean P_PlayerHitFloor(player_t *player, boolean dorollstuff)
 					if (player->charflags & SF_DASHMODE && player->dashmode >= DASHMODE_THRESHOLD && player->panim != PA_DASH)
 						P_SetMobjState(player->mo, S_PLAY_DASH);
 					else if (player->speed >= runspd
-					&& (player->panim != PA_RUN || player->mo->state-states == S_PLAY_FLOAT_RUN))
+					&& (player->panim != PA_RUN || P_IsPlayerInState(player, S_PLAY_FLOAT_RUN)))
 						P_SetMobjState(player->mo, S_PLAY_RUN);
 					else if ((player->mo->momx || player->mo->momy)
-					&& (player->panim != PA_WALK || player->mo->state-states == S_PLAY_FLOAT))
+					&& (player->panim != PA_WALK || P_IsPlayerInState(player, S_PLAY_FLOAT)))
 						P_SetMobjState(player->mo, S_PLAY_WALK);
 					else if (!player->mo->momx && !player->mo->momy && player->panim != PA_IDLE)
 						P_SetMobjState(player->mo, S_PLAY_STND);
@@ -3711,9 +3739,9 @@ static void P_DoClimbing(player_t *player)
 			climb = false;
 
 		if (player->climbing && climb && (player->mo->momx || player->mo->momy || player->mo->momz)
-			&& player->mo->state-states != S_PLAY_CLIMB)
+			&& !P_IsPlayerInState(player, S_PLAY_CLIMB))
 			P_SetMobjState(player->mo, S_PLAY_CLIMB);
-		else if ((!(player->mo->momx || player->mo->momy || player->mo->momz) || !climb) && player->mo->state-states != S_PLAY_CLING)
+		else if ((!(player->mo->momx || player->mo->momy || player->mo->momz) || !climb) && !P_IsPlayerInState(player, S_PLAY_CLING))
 			P_SetMobjState(player->mo, S_PLAY_CLING);
 
 		if (!floorclimb)
@@ -3746,9 +3774,9 @@ static void P_DoClimbing(player_t *player)
 		climb = false;
 
 	if (player->climbing && climb && (player->mo->momx || player->mo->momy || player->mo->momz)
-		&& player->mo->state-states != S_PLAY_CLIMB)
+		&& !P_IsPlayerInState(player, S_PLAY_CLIMB))
 		P_SetMobjState(player->mo, S_PLAY_CLIMB);
-	else if ((!(player->mo->momx || player->mo->momy || player->mo->momz) || !climb) && player->mo->state-states != S_PLAY_CLING)
+	else if ((!(player->mo->momx || player->mo->momy || player->mo->momz) || !climb) && !P_IsPlayerInState(player, S_PLAY_CLING))
 		P_SetMobjState(player->mo, S_PLAY_CLING);
 
 	if (cmd->buttons & BT_SPIN && !(player->pflags & PF_JUMPSTASIS))
@@ -4436,7 +4464,7 @@ static void P_DoSuperStuff(player_t *player)
 
 		G_GhostAddColor(GHC_SUPER);
 
-		if (player->mo->state == &states[S_PLAY_SUPER_TRANS6]) // stop here for now
+		if (P_IsPlayerInState(player, S_PLAY_SUPER_TRANS6)) // stop here for now
 			return;
 
 		// Deplete one ring every second while super
@@ -4719,7 +4747,7 @@ static void P_DoSpinAbility(player_t *player, ticcmd_t *cmd)
 {
 	boolean canstand = true; // can we stand on the ground? (mostly relevant for slopes)
 	if (player->pflags & PF_STASIS
-		&& (player->pflags & PF_JUMPSTASIS || player->mo->state-states != S_PLAY_GLIDE_LANDING))
+		&& (player->pflags & PF_JUMPSTASIS || !P_IsPlayerInState(player, S_PLAY_GLIDE_LANDING)))
 		return;
 
 	if (cmd->buttons & BT_SPIN)
@@ -4739,7 +4767,7 @@ static void P_DoSpinAbility(player_t *player, ticcmd_t *cmd)
 		{
 			case CA2_SPINDASH: // Spinning and Spindashing
 				 // Start revving
-				if ((cmd->buttons & BT_SPIN) && (player->speed < FixedMul(5<<FRACBITS, player->mo->scale) || player->mo->state - states == S_PLAY_GLIDE_LANDING)
+				if ((cmd->buttons & BT_SPIN) && (player->speed < FixedMul(5<<FRACBITS, player->mo->scale) || P_IsPlayerInState(player, S_PLAY_GLIDE_LANDING))
 					&& !player->mo->momz && onground && !(player->pflags & (PF_SPINDOWN|PF_SPINNING))
 						&& canstand)
 				{
@@ -5028,7 +5056,7 @@ void P_DoBubbleBounce(player_t *player)
 //
 void P_DoAbilityBounce(player_t *player, boolean changemomz)
 {
-	if (player->mo->state-states == S_PLAY_BOUNCE_LANDING)
+	if (P_IsPlayerInState(player, S_PLAY_BOUNCE_LANDING))
 		return;
 
 	if (changemomz)
@@ -5202,7 +5230,7 @@ static boolean P_PlayerShieldThink(player_t *player, ticcmd_t *cmd, mobj_t *lock
 						if (!P_MobjWasRemoved(visual))
 						{
 							P_SetTarget(&visual->target, lockonshield);
-						visual->drawonlyforplayer = player; // Hide it from the other player in splitscreen, and yourself when spectating
+							visual->drawonlyforplayer = player; // Hide it from the other player in splitscreen, and yourself when spectating
 							P_SetMobjStateNF(visual, visual->info->spawnstate+1);
 						}
 					}
@@ -6109,7 +6137,7 @@ static void P_3dMovement(player_t *player)
 	// When sliding, don't allow forward/back
 	if (player->pflags & PF_SLIDING)
 		cmd->forwardmove = 0;
-	else if (onground && player->mo->state == states+S_PLAY_PAIN)
+	else if (onground && P_IsPlayerInState(player, S_PLAY_PAIN))
 		P_SetMobjState(player->mo, S_PLAY_WALK);
 
 	player->aiming = cmd->aiming<<FRACBITS;
@@ -6162,7 +6190,7 @@ static void P_3dMovement(player_t *player)
 	{
 		if (player->pflags & PF_BOUNCING)
 		{
-			if (player->mo->state-states == S_PLAY_BOUNCE_LANDING)
+			if (P_IsPlayerInState(player, S_PLAY_BOUNCE_LANDING))
 			{
 				thrustfactor = player->thrustfactor*8;
 				acceleration = player->accelstart/8 + (FixedDiv(player->speed, player->mo->scale)>>FRACBITS) * player->acceleration/8;
@@ -6915,10 +6943,10 @@ static void P_DoNiGHTSCapsule(player_t *player)
 	{
 		if (player->mo->momx || player->mo->momy || player->mo->momz)
 		{
-			if (player->mo->state != &states[S_PLAY_NIGHTS_PULL])
+			if (!P_IsPlayerInState(player, S_PLAY_NIGHTS_PULL))
 				P_SetMobjState(player->mo, S_PLAY_NIGHTS_PULL);
 		}
-		else if (player->mo->state != &states[S_PLAY_NIGHTS_ATTACK])
+		else if (!P_IsPlayerInState(player, S_PLAY_NIGHTS_ATTACK))
 		{
 			S_StartSound(player->mo, sfx_spin);
 			P_SetMobjState(player->mo, S_PLAY_NIGHTS_ATTACK);
@@ -6934,7 +6962,7 @@ static void P_DoNiGHTSCapsule(player_t *player)
 
 	if (!(player->charflags & SF_NONIGHTSROTATION))
 	{
-		if ((player->mo->state == &states[S_PLAY_NIGHTS_PULL])
+		if ((P_IsPlayerInState(player, S_PLAY_NIGHTS_PULL))
 		&& (player->mo->sprite2 == SPR2_NPUL))
 			player->mo->spriteroll -= ANG30;
 		else
@@ -7249,15 +7277,11 @@ static void P_NiGHTSMovement(player_t *player)
 			if (playeringame[i] /*&& players[i].powers[pw_carry] == CR_NIGHTSMODE*/
 			&& (players[i].capsule && players[i].capsule->reactiontime))
 				capsule = true;
-		if (!capsule
-		&& !(player->mo->state >= &states[S_PLAY_NIGHTS_TRANS1]
-			&& player->mo->state <= &states[S_PLAY_NIGHTS_TRANS6])
-		&& !player->exiting)
+		if (!capsule && !P_IsPlayerInNightsTransformationState(player) && !player->exiting)
 			player->nightstime--;
 	}
 	else if (!(gametyperules & GTR_RACE)
-	&& !(player->mo->state >= &states[S_PLAY_NIGHTS_TRANS1]
-			&& player->mo->state <= &states[S_PLAY_NIGHTS_TRANS6])
+	&& !P_IsPlayerInNightsTransformationState(player)
 	&& !(player->capsule && player->capsule->reactiontime)
 	&& !player->exiting)
 		player->nightstime--;
@@ -7397,8 +7421,7 @@ static void P_NiGHTSMovement(player_t *player)
 		return;
 	}
 
-	if (player->mo->state >= &states[S_PLAY_NIGHTS_TRANS1]
-		&& player->mo->state <= &states[S_PLAY_NIGHTS_TRANS6])
+	if (P_IsPlayerInNightsTransformationState(player))
 	{
 		player->mo->momx = player->mo->momy = player->mo->momz = 0;
 		player->mo->spriteroll = 0;
@@ -7417,14 +7440,14 @@ static void P_NiGHTSMovement(player_t *player)
 #if 0//def ROTSPRITE
 		if (!(player->charflags & SF_NONIGHTSROTATION) && player->mo->momz)
 		{
-			if (player->mo->state != &states[S_PLAY_NIGHTS_DRILL])
+			if (!P_IsPlayerInState(player, S_PLAY_NIGHTS_DRILL))
 				P_SetMobjState(player->mo, S_PLAY_NIGHTS_DRILL);
 			player->mo->spriteroll = ANGLE_90;
 		}
 		else
 #endif
 		{
-			if (player->mo->state != &states[S_PLAY_NIGHTS_FLOAT])
+			if (!P_IsPlayerInState(player, S_PLAY_NIGHTS_FLOAT))
 				P_SetMobjState(player->mo, S_PLAY_NIGHTS_FLOAT);
 			player->drawangle += ANGLE_22h;
 		}
@@ -8056,7 +8079,7 @@ static void P_SkidStuff(player_t *player)
 			// Spawn a particle every 3 tics.
 			if (!(player->skidtime % 3))
 			{
-				if (player->mo->state-states == S_PLAY_GLIDE_LANDING)
+				if (P_IsPlayerInState(player, S_PLAY_GLIDE_LANDING))
 					P_SpawnSkidDust(player, player->mo->radius, true);
 				else
 					P_SpawnSkidDust(player, 0, false);
@@ -8076,7 +8099,7 @@ static void P_SkidStuff(player_t *player)
 			// If your push angle is more than this close to a full 180 degrees, trigger a skid.
 			if (dang > ANGLE_157h)
 			{
-				if (player->mo->state-states != S_PLAY_SKID)
+				if (!P_IsPlayerInState(player, S_PLAY_SKID))
 					P_SetMobjState(player->mo, S_PLAY_SKID);
 				player->mo->tics = player->skidtime = (player->mo->movefactor == FRACUNIT) ? TICRATE/2 : (FixedDiv(35<<(FRACBITS-1), FixedSqrt(player->mo->movefactor)))>>FRACBITS;
 				S_StartSound(player->mo, sfx_skid);
@@ -8100,7 +8123,7 @@ void P_MovePlayer(player_t *player)
 
 	fixed_t runspd;
 
-	if (player->mo->state >= &states[S_PLAY_SUPER_TRANS1] && player->mo->state <= &states[S_PLAY_SUPER_TRANS6])
+	if (P_IsPlayerInSuperTransformationState(player))
 	{
 		player->mo->momx = player->mo->momy = player->mo->momz = 0;
 		return;
@@ -8121,7 +8144,7 @@ void P_MovePlayer(player_t *player)
 	if ((player->powers[pw_carry] == CR_BRAKGOOP)
 	|| (player->pflags & PF_GLIDING && player->skidtime)
 	|| (player->charability2 == CA2_GUNSLINGER && player->panim == PA_ABILITY2)
-	|| (player->charability2 == CA2_MELEE && player->mo->state-states == S_PLAY_MELEE_LANDING))
+	|| (player->charability2 == CA2_MELEE && P_IsPlayerInState(player, S_PLAY_MELEE_LANDING)))
 		player->pflags |= PF_FULLSTASIS;
 	else if (player->powers[pw_nocontrol])
 	{
@@ -8130,7 +8153,7 @@ void P_MovePlayer(player_t *player)
 			player->pflags |= PF_JUMPSTASIS;
 	}
 
-	if (player->charability == CA_GLIDEANDCLIMB && player->mo->state-states == S_PLAY_GLIDE_LANDING)
+	if (player->charability == CA_GLIDEANDCLIMB && P_IsPlayerInState(player, S_PLAY_GLIDE_LANDING))
 	{
 		player->pflags |= PF_STASIS;
 	}
@@ -8309,7 +8332,7 @@ void P_MovePlayer(player_t *player)
 	{
 		// If the player is in dashmode, here's their peelout.
 		if (player->charflags & SF_DASHMODE && player->dashmode >= DASHMODE_THRESHOLD && player->panim == PA_RUN && !player->skidtime && (onground || ((player->charability == CA_FLOAT || player->charability == CA_SLOWFALL) && player->secondjump == 1) || player->powers[pw_super]))
-			P_SetMobjState (player->mo, S_PLAY_DASH);
+			P_SetMobjState(player->mo, S_PLAY_DASH);
 		// If the player is moving fast enough,
 		// break into a run!
 		else if (player->speed >= runspd && player->panim == PA_WALK && !player->skidtime
@@ -8323,11 +8346,11 @@ void P_MovePlayer(player_t *player)
 
 		// Floating at slow speeds has its own special animation.
 		else if ((((player->charability == CA_FLOAT || player->charability == CA_SLOWFALL) && player->secondjump == 1) || player->powers[pw_super]) && player->panim == PA_IDLE && !onground)
-			P_SetMobjState (player->mo, S_PLAY_FLOAT);
+			P_SetMobjState(player->mo, S_PLAY_FLOAT);
 
 		// Otherwise, just walk.
 		else if ((player->rmomx || player->rmomy) && player->panim == PA_IDLE)
-			P_SetMobjState (player->mo, S_PLAY_WALK);
+			P_SetMobjState(player->mo, S_PLAY_WALK);
 	}
 
 	// If your peelout animation is playing, and you're
@@ -8348,9 +8371,9 @@ void P_MovePlayer(player_t *player)
 	// Correct floating when ending up on the ground.
 	if (onground)
 	{
-		if (player->mo->state-states == S_PLAY_FLOAT)
+		if (P_IsPlayerInState(player, S_PLAY_FLOAT))
 			P_SetMobjState(player->mo, S_PLAY_WALK);
-		else if (player->mo->state-states == S_PLAY_FLOAT_RUN)
+		else if (P_IsPlayerInState(player, S_PLAY_FLOAT_RUN))
 			P_SetMobjState(player->mo, S_PLAY_RUN);
 	}
 
@@ -8416,7 +8439,7 @@ void P_MovePlayer(player_t *player)
 		fixed_t glidespeed = player->actionspd;
 		fixed_t momx = mo->momx - player->cmomx, momy = mo->momy - player->cmomy;
 		angle_t angle, moveangle = R_PointToAngle2(0, 0, momx, momy);
-		boolean swimming = mo->state - states == S_PLAY_SWIM;
+		boolean swimming = P_IsPlayerInState(player, S_PLAY_SWIM);
 		boolean in2d = mo->flags2 & MF2_TWOD || twodlevel;
 
 		if (player->powers[pw_super] || player->powers[pw_sneakers])
@@ -8563,7 +8586,7 @@ void P_MovePlayer(player_t *player)
 			}
 		}
 	}
-	else if (player->mo->state-states == S_PLAY_BOUNCE)
+	else if (P_IsPlayerInState(player, S_PLAY_BOUNCE))
 		P_SetMobjState(player->mo, S_PLAY_FALL);
 
 	// If you're running fast enough, you can create splashes as you run in shallow water.
@@ -8607,7 +8630,7 @@ void P_MovePlayer(player_t *player)
 	if (!(player->charability == CA_FLY || player->charability == CA_SWIM)) // why are you flying when you cannot fly?!
 	{
 		if (player->powers[pw_tailsfly]
-		|| player->mo->state-states == S_PLAY_FLY_TIRED)
+		|| P_IsPlayerInState(player, S_PLAY_FLY_TIRED))
 		{
 			if (onground)
 				P_SetMobjState(player->mo, S_PLAY_WALK);
@@ -8675,11 +8698,11 @@ void P_MovePlayer(player_t *player)
 		else
 		{
 			// Tails-gets-tired Stuff
-			if (player->panim == PA_ABILITY && player->mo->state-states != S_PLAY_FLY_TIRED)
+			if (player->panim == PA_ABILITY && !P_IsPlayerInState(player, S_PLAY_FLY_TIRED))
 				P_SetMobjState(player->mo, S_PLAY_FLY_TIRED);
 
 			if (player->charability == CA_FLY && (leveltime % 10 == 0)
-				&& player->mo->state-states == S_PLAY_FLY_TIRED
+				&& P_IsPlayerInState(player, S_PLAY_FLY_TIRED)
 				&& !(player->mo->eflags & MFE_UNDERWATER)
 				&& !player->spectator)
 				S_StartSound(player->mo, sfx_pudpud);
@@ -8774,7 +8797,7 @@ void P_MovePlayer(player_t *player)
 		}
 		// Otherwise, face the direction you're travelling.
 		else if (player->panim == PA_WALK || player->panim == PA_RUN || player->panim == PA_DASH || player->panim == PA_ROLL || player->panim == PA_JUMP
-		|| (player->panim == PA_ABILITY && player->mo->state-states == S_PLAY_GLIDE))
+		|| (player->panim == PA_ABILITY && P_IsPlayerInState(player, S_PLAY_GLIDE)))
 			player->mo->angle = R_PointToAngle2(0, 0, player->rmomx, player->rmomy);
 
 		// Update the local angle control.
@@ -9035,7 +9058,7 @@ static void P_DoRopeHang(player_t *player)
 		return;
 	}
 
-	if (player->mo->state-states != S_PLAY_RIDE)
+	if (!P_IsPlayerInState(player, S_PLAY_RIDE))
 		P_SetMobjState(player->mo, S_PLAY_RIDE);
 
 	// If not allowed to move, we're done here.
@@ -9972,9 +9995,7 @@ boolean P_MoveChaseCamera(player_t *player, camera_t *thiscam, boolean resetcall
 		&& !((gametyperules & GTR_FRIENDLY) && (netgame || multiplayer) && cv_exitmove.value)
 		&& !(twodlevel || (mo->flags2 & MF2_TWOD)))
 			sign = mo->target;
-		else if ((player->powers[pw_carry] == CR_NIGHTSMODE)
-		&& !(player->mo->state >= &states[S_PLAY_NIGHTS_TRANS1]
-		&& player->mo->state <= &states[S_PLAY_NIGHTS_TRANS6]))
+		else if (player->powers[pw_carry] == CR_NIGHTSMODE && !P_IsPlayerInNightsTransformationState(player))
 		{
 			P_CalcChasePostImg(player, thiscam);
 			return true;
@@ -11291,7 +11312,7 @@ static void P_MinecartThink(player_t *player)
 		}
 	}
 
-	if (player->mo->state-states != S_PLAY_STND)
+	if (!P_IsPlayerInState(player, S_PLAY_STND))
 	{
 		P_SetMobjState(player->mo, S_PLAY_STND);
 		player->mo->tics = -1;
@@ -11369,12 +11390,12 @@ void P_DoTailsOverlay(player_t *player, mobj_t *tails)
 	}
 	else if (player->panim == PA_PAIN)
 		backwards /= 16;
-	else if (player->mo->state-states == S_PLAY_GASP)
+	else if (P_IsPlayerInState(player, S_PLAY_GASP))
 	{
 		backwards /= 16;
 		zoffs += 12*FRACUNIT;
 	}
-	else if (player->mo->state-states == S_PLAY_EDGE)
+	else if (P_IsPlayerInState(player, S_PLAY_EDGE))
 	{
 		backwards /= 16;
 		zoffs = 3*FRACUNIT;
@@ -11403,13 +11424,13 @@ void P_DoTailsOverlay(player_t *player, mobj_t *tails)
 	}
 	else if (player->panim == PA_SPRING || player->panim == PA_JUMP)
 		chosenstate = S_TAILSOVERLAY_MINUS60DEGREES;
-	else if (player->panim == PA_FALL || player->mo->state-states == S_PLAY_RIDE)
+	else if (player->panim == PA_FALL || P_IsPlayerInState(player, S_PLAY_RIDE))
 		chosenstate = S_TAILSOVERLAY_PLUS60DEGREES;
 	else if (player->panim == PA_PAIN)
 		chosenstate = S_TAILSOVERLAY_PAIN;
-	else if (player->mo->state-states == S_PLAY_GASP)
+	else if (P_IsPlayerInState(player, S_PLAY_GASP))
 		chosenstate = S_TAILSOVERLAY_GASP;
-	else if (player->mo->state-states == S_PLAY_EDGE)
+	else if (P_IsPlayerInState(player, S_PLAY_EDGE))
 		chosenstate = S_TAILSOVERLAY_EDGE;
 	else if (player->panim == PA_DASH)
 		chosenstate = S_TAILSOVERLAY_DASH;
@@ -11417,7 +11438,7 @@ void P_DoTailsOverlay(player_t *player, mobj_t *tails)
 		chosenstate = S_TAILSOVERLAY_RUN;
 	else if (player->panim == PA_WALK)
 	{
-		if (!smilesonground || player->mo->state-states == S_PLAY_SKID)
+		if (!smilesonground || P_IsPlayerInState(player, S_PLAY_SKID))
 			chosenstate = S_TAILSOVERLAY_PLUS30DEGREES;
 		else if (player->speed >= FixedMul(player->runspeed/2, player->mo->scale))
 			chosenstate = S_TAILSOVERLAY_0DEGREES;
@@ -11459,7 +11480,7 @@ void P_DoTailsOverlay(player_t *player, mobj_t *tails)
 #endif
 
 	// animation...
-	if (player->panim == PA_SPRING || player->panim == PA_FALL || player->mo->state-states == S_PLAY_RIDE)
+	if (player->panim == PA_SPRING || player->panim == PA_FALL || P_IsPlayerInState(player, S_PLAY_RIDE))
 	{
 		if (FixedDiv(abs(player->mo->momz), player->mo->scale) < 20<<FRACBITS)
 			ticnum = 2;
@@ -11468,7 +11489,7 @@ void P_DoTailsOverlay(player_t *player, mobj_t *tails)
 	}
 	else if (player->panim == PA_PAIN)
 		ticnum = 2;
-	else if (player->mo->state-states == S_PLAY_GASP)
+	else if (P_IsPlayerInState(player, S_PLAY_GASP))
 		tails->tics = -1;
 	else if (player->mo->sprite2 == SPR2_TIRE)
 		ticnum = (doswim ? 2 : 4);
@@ -12291,10 +12312,9 @@ void P_PlayerThink(player_t *player)
 				diff = InvAngle(diff);
 			if (diff > ANG10/2)
 			{
-				statenum_t stat = player->mo->state-states;
-				if (stat == S_PLAY_WAIT)
+				if (P_IsPlayerInState(player, S_PLAY_WAIT))
 					P_SetMobjState(player->mo, S_PLAY_STND);
-				else if (stat == S_PLAY_STND && player->mo->tics != -1)
+				else if (P_IsPlayerInState(player, S_PLAY_STND) && player->mo->tics != -1)
 					player->mo->tics++;
 			}
 		}
@@ -12319,7 +12339,7 @@ void P_PlayerThink(player_t *player)
 				// fake skidding! see P_SkidStuff for reference on conditionals
 				else if (!player->skidtime && !(player->mo->eflags & MFE_GOOWATER) && !(player->pflags & (PF_JUMPED|PF_SPINNING|PF_SLIDING)) && !(player->charflags & SF_NOSKID) && P_AproxDistance(player->mo->momx, player->mo->momy) >= FixedMul(player->runspeed, player->mo->scale)) // modified from player->runspeed/2 'cuz the skid was just TOO frequent ngl
 				{
-					if (player->mo->state-states != S_PLAY_SKID)
+					if (!P_IsPlayerInState(player, S_PLAY_SKID))
 						P_SetMobjState(player->mo, S_PLAY_SKID);
 					player->mo->tics = player->skidtime = (player->mo->movefactor == FRACUNIT) ? TICRATE/2 : (FixedDiv(35<<(FRACBITS-1), FixedSqrt(player->mo->movefactor)))>>FRACBITS;
 
@@ -12490,16 +12510,14 @@ void P_PlayerThink(player_t *player)
 		player->stronganim = 0;
 
 	//pw_super acts as a timer now
-	if (player->powers[pw_super]
-	&& (player->mo->state < &states[S_PLAY_SUPER_TRANS1]
-	|| player->mo->state > &states[S_PLAY_SUPER_TRANS6]))
+	if (player->powers[pw_super] && !P_IsPlayerInSuperTransformationState(player))
 		player->powers[pw_super]++;
 
 	if (player->powers[pw_carry] == CR_BRAKGOOP)
 	{
 		if (!player->powers[pw_flashing])
 		{
-			if (player->mo->state != &states[S_PLAY_STND])
+			if (!P_IsPlayerInState(player, S_PLAY_STND))
 				P_SetMobjState(player->mo, S_PLAY_STND);
 			else
 				player->mo->tics = 2;
@@ -12864,7 +12882,7 @@ void P_PlayerAfterThink(player_t *player)
 		S_StartSound(NULL, sfx_wepchg);
 
 	if ((player->pflags & PF_SLIDING) && ((player->pflags & (PF_JUMPED|PF_NOJUMPDAMAGE)) != PF_JUMPED))
-		P_SetMobjState(player->mo, player->mo->info->painstate);
+		P_SetMobjState(player->mo, S_PLAY_PAIN);
 
 	/* if (player->powers[pw_carry] == CR_NONE && player->mo->tracer && !player->homing)
 		P_SetTarget(&player->mo->tracer, NULL);
@@ -12924,7 +12942,7 @@ void P_PlayerAfterThink(player_t *player)
 
 				if (player->powers[pw_carry] == CR_PLAYER)
 				{
-					if (player->mo->state-states != S_PLAY_RIDE)
+					if (!P_IsPlayerInState(player, S_PLAY_RIDE))
 						P_SetMobjState(player->mo, S_PLAY_RIDE);
 					if (tails->player && (tails->skin && ((skin_t *)(tails->skin))->sprites[SPR2_SWIM].numframes) && (tails->eflags & MFE_UNDERWATER))
 						tails->player->powers[pw_tailsfly] = 0;
@@ -12949,7 +12967,7 @@ void P_PlayerAfterThink(player_t *player)
 					player->mo->z = item->z - FixedDiv(player->mo->height, 3*FRACUNIT/2);
 				player->mo->momx = player->mo->momy = player->mo->momz = 0;
 				P_SetThingPosition(player->mo);
-				if (player->mo->state-states != S_PLAY_RIDE)
+				if (!P_IsPlayerInState(player, S_PLAY_RIDE))
 					P_SetMobjState(player->mo, S_PLAY_RIDE);
 
 				// Controllable missile
@@ -13147,7 +13165,7 @@ void P_PlayerAfterThink(player_t *player)
 				ptera->waterbottom >>= 1;
 				ptera->cvmem >>= 1;
 
-				if (player->mo->state-states != S_PLAY_FALL)
+				if (!P_IsPlayerInState(player, S_PLAY_FALL))
 					P_SetMobjState(player->mo, S_PLAY_FALL);
 				break;
 
@@ -13294,9 +13312,9 @@ boolean P_PlayerCanEnterSpinGaps(player_t *player)
 		return false;
 
 	return ((player->pflags & (PF_SPINNING|PF_SLIDING|PF_GLIDING)) // players who are spinning, sliding, or gliding
-		|| (player->charability == CA_GLIDEANDCLIMB && player->mo->state-states == S_PLAY_GLIDE_LANDING) // players who are landing from a glide
+		|| (player->charability == CA_GLIDEANDCLIMB && P_IsPlayerInState(player, S_PLAY_GLIDE_LANDING)) // players who are landing from a glide
 		|| ((player->charflags & (SF_DASHMODE|SF_MACHINE)) == (SF_DASHMODE|SF_MACHINE)
-			&& player->dashmode >= DASHMODE_THRESHOLD && player->mo->state-states == S_PLAY_DASH) // machine players in dashmode
+			&& player->dashmode >= DASHMODE_THRESHOLD && P_IsPlayerInState(player, S_PLAY_DASH)) // machine players in dashmode
 		|| JUMPCURLED(player)); // players who are jumpcurled, but only if they would normally jump that way
 }
 
@@ -13304,13 +13322,13 @@ boolean P_PlayerCanEnterSpinGaps(player_t *player)
 boolean P_PlayerShouldUseSpinHeight(player_t *player)
 {
 	return ((player->pflags & (PF_SPINNING|PF_SLIDING|PF_GLIDING))
-		|| (player->mo->state == &states[player->mo->info->painstate])
+		|| P_IsPlayerInState(player, S_PLAY_PAIN)
 		|| (player->panim == PA_ROLL)
-		|| ((player->powers[pw_tailsfly] || (player->charability == CA_FLY && player->mo->state-states == S_PLAY_FLY_TIRED))
+		|| ((player->powers[pw_tailsfly] || (player->charability == CA_FLY && P_IsPlayerInState(player, S_PLAY_FLY_TIRED)))
 			&& !(player->charflags & SF_NOJUMPSPIN))
-		|| (player->charability == CA_GLIDEANDCLIMB && player->mo->state-states == S_PLAY_GLIDE_LANDING)
+		|| (player->charability == CA_GLIDEANDCLIMB && P_IsPlayerInState(player, S_PLAY_GLIDE_LANDING))
 		|| ((player->charflags & (SF_DASHMODE|SF_MACHINE)) == (SF_DASHMODE|SF_MACHINE)
-			&& player->dashmode >= DASHMODE_THRESHOLD && player->mo->state-states == S_PLAY_DASH)
+			&& player->dashmode >= DASHMODE_THRESHOLD && P_IsPlayerInState(player, S_PLAY_DASH))
 		|| JUMPCURLED(player));
 }
 
diff --git a/src/r_skins.c b/src/r_skins.c
index 7b5e547148a6ba975775dfc933602614be33921d..47ead32637c869af7ea44cb668a43dfc6bac8631 100644
--- a/src/r_skins.c
+++ b/src/r_skins.c
@@ -28,6 +28,7 @@
 #include "p_local.h"
 #include "dehacked.h" // get_number (for thok)
 #include "m_cond.h"
+#include "deh_tables.h"
 #ifdef HWRENDER
 #include "hardware/hw_md2.h"
 #endif
@@ -791,6 +792,88 @@ static boolean R_ProcessPatchableFields(skin_t *skin, char *stoken, char *value)
 	return true;
 }
 
+// e.g. "RUN" => S_PLAY_RUN, "RUN1" => S_PLAY_RUN, "RUN8" => S_PLAY_RUN
+static statenum_t GetCanonicalPlayerStateNumByName(const char *name)
+{
+	if (startswith(name, "STAND"))               return S_PLAY_STND;
+	else if (startswith(name, "STND"))           return S_PLAY_STND;
+	else if (startswith(name, "WAIT"))           return S_PLAY_WAIT;
+	else if (startswith(name, "WALK"))           return S_PLAY_WALK;
+	else if (startswith(name, "SKID"))           return S_PLAY_SKID;
+	else if (startswith(name, "RUN"))            return S_PLAY_RUN;
+	else if (startswith(name, "DASH"))           return S_PLAY_DASH;
+	else if (startswith(name, "PAIN"))           return S_PLAY_PAIN;
+	else if (startswith(name, "STUN"))           return S_PLAY_STUN;
+	else if (startswith(name, "DEAD"))           return S_PLAY_DEAD;
+	else if (startswith(name, "DRWN"))           return S_PLAY_DRWN;
+	else if (startswith(name, "ROLL"))           return S_PLAY_ROLL;
+	else if (startswith(name, "GASP"))           return S_PLAY_GASP;
+	else if (startswith(name, "JUMP"))           return S_PLAY_JUMP;
+	else if (startswith(name, "SPRING"))         return S_PLAY_SPRING;
+	else if (startswith(name, "FALL"))           return S_PLAY_FALL;
+	else if (startswith(name, "EDGE"))           return S_PLAY_EDGE;
+	else if (startswith(name, "RIDE"))           return S_PLAY_RIDE;
+	else if (startswith(name, "SPINDASH"))       return S_PLAY_SPINDASH;
+	else if (startswith(name, "FLY"))            return S_PLAY_FLY;
+	else if (startswith(name, "SWIM"))           return S_PLAY_SWIM;
+	else if (startswith(name, "FLY_TIRED"))      return S_PLAY_FLY_TIRED;
+	else if (startswith(name, "GLIDE"))          return S_PLAY_GLIDE;
+	else if (startswith(name, "GLIDE_LANDING"))  return S_PLAY_GLIDE_LANDING;
+	else if (startswith(name, "CLING"))          return S_PLAY_CLING;
+	else if (startswith(name, "CLIMB"))          return S_PLAY_CLIMB;
+	else if (startswith(name, "FLOAT"))          return S_PLAY_FLOAT;
+	else if (startswith(name, "FLOAT_RUN"))      return S_PLAY_FLOAT_RUN;
+	else if (startswith(name, "BOUNCE"))         return S_PLAY_BOUNCE;
+	else if (startswith(name, "BOUNCE_LANDING")) return S_PLAY_BOUNCE_LANDING;
+	else if (startswith(name, "FIRE"))           return S_PLAY_FIRE;
+	else if (startswith(name, "FIRE_FINISH"))    return S_PLAY_FIRE_FINISH;
+	else if (startswith(name, "TWINSPIN"))       return S_PLAY_TWINSPIN;
+	else if (startswith(name, "MELEE"))          return S_PLAY_MELEE;
+	else if (startswith(name, "MELEE_FINISH"))   return S_PLAY_MELEE_FINISH;
+	else if (startswith(name, "MELEE_LANDING"))  return S_PLAY_MELEE_LANDING;
+	else if (startswith(name, "NIGHTS_STAND"))   return S_PLAY_NIGHTS_STAND;
+	else if (startswith(name, "NIGHTS_FLOAT"))   return S_PLAY_NIGHTS_FLOAT;
+	else if (startswith(name, "NIGHTS_FLY"))     return S_PLAY_NIGHTS_FLY;
+	else if (startswith(name, "NIGHTS_DRILL"))   return S_PLAY_NIGHTS_DRILL;
+	else if (startswith(name, "NIGHTS_STUN"))    return S_PLAY_NIGHTS_STUN;
+	else if (startswith(name, "NIGHTS_PULL"))    return S_PLAY_NIGHTS_PULL;
+	else if (startswith(name, "NIGHTS_ATTACK"))  return S_PLAY_NIGHTS_ATTACK;
+	else return S_NULL;
+}
+
+static void CacheCustomSkinStates(skin_t *skin)
+{
+	SIMPLEHASH_CLEAR(skin->defaulttocustomstate, hashentry_int32_int32_t)
+	SIMPLEHASH_CLEAR(skin->customtodefaultstate, hashentry_int32_int32_t)
+
+	char *skinstateprefix = va("SKIN_%s_", skin->name);
+	strupr(skinstateprefix);
+	size_t skinstateprefixlen = strlen(skinstateprefix);
+
+	for (INT32 state = S_FIRSTFREESLOT; state <= S_LASTFREESLOT; state++)
+	{
+		const char *statename = FREE_STATES[state - S_FIRSTFREESLOT];
+
+		if (!statename)
+			continue;
+		if (strncmp(statename, skinstateprefix, skinstateprefixlen))
+			continue;
+
+		statenum_t defaultstate = GetCanonicalPlayerStateNumByName(&statename[skinstateprefixlen]);
+		if (defaultstate)
+		{
+			// If a default state is overriden by multiple custom states, use the first one as reference
+			// e.g. WALK+WALK2+WALK3+WALK4 instead of just WALK
+			statenum_t alreadyoverriden;
+			SIMPLEHASH_FIND_INT(skin->defaulttocustomstate, hashentry_int32_int32_t, defaultstate, S_NULL, alreadyoverriden)
+			if (!alreadyoverriden)
+				SIMPLEHASH_REPLACE_INT(skin->defaulttocustomstate, hashentry_int32_int32_t, defaultstate, state)
+
+			SIMPLEHASH_REPLACE_INT(skin->customtodefaultstate, hashentry_int32_int32_t, state, defaultstate)
+		}
+	}
+}
+
 //
 // Find skin sprites, sounds & optional status bar face, & add them
 //
@@ -945,6 +1028,8 @@ next_token:
 
 		R_FlushTranslationColormapCache();
 
+		CacheCustomSkinStates(skin);
+
 		if (mainfile == false)
 			CONS_Printf(M_GetText("Added skin '%s'\n"), skin->name);
 
@@ -1082,6 +1167,8 @@ next_token:
 
 		R_FlushTranslationColormapCache();
 
+		CacheCustomSkinStates(skin);
+
 		if (mainfile == false)
 			CONS_Printf(M_GetText("Patched skin '%s'\n"), skin->name);
 	}
diff --git a/src/r_skins.h b/src/r_skins.h
index 645fea540c53dd26e61cc7f3a2e71ecc3c365d1a..7df0d584bd88a09b25a6e8a31b2da351a1a06db5 100644
--- a/src/r_skins.h
+++ b/src/r_skins.h
@@ -20,6 +20,7 @@
 #include "r_patch.h"
 #include "r_picformats.h" // spriteinfo_t
 #include "r_defs.h" // spritedef_t
+#include "simple_hashmap.h"
 
 /// Defaults
 #define SKINNAMESIZE 16
@@ -89,6 +90,9 @@ typedef struct
 		spriteinfo_t sprinfo[NUMPLAYERSPRITES];
 	} super;
 
+	hashentry_int32_int32_t *defaulttocustomstate; // e.g. S_PLAY_WALK => S_SKIN_BIGTHECAT_WALK
+	hashentry_int32_int32_t *customtodefaultstate; // e.g. S_SKIN_BIGTHECAT_WALK => S_PLAY_WALK
+
 	// TODO: 2.3: Delete
 	spritedef_t sprites_compat[NUMPLAYERSPRITES * 2];
 } skin_t;
diff --git a/src/simple_hashmap.h b/src/simple_hashmap.h
new file mode 100644
index 0000000000000000000000000000000000000000..0e322455b057446b13f552bcc3716194589fe14e
--- /dev/null
+++ b/src/simple_hashmap.h
@@ -0,0 +1,58 @@
+// SONIC ROBO BLAST 2
+//-----------------------------------------------------------------------------
+// Copyright (C) 2024 by Sonic Team Junior.
+//
+// This program is free software distributed under the
+// terms of the GNU General Public License, version 2.
+// See the 'LICENSE' file for more details.
+//-----------------------------------------------------------------------------
+/// \file  simplehash.h
+/// \brief Macros for handling basic hashmap types
+
+#ifndef __SIMPLEHASH__
+#define __SIMPLEHASH__
+
+#include "uthash.h"
+
+typedef struct
+{
+	INT32 k;
+	INT32 v;
+	UT_hash_handle hh;
+} hashentry_int32_int32_t;
+
+// hashmap<type>[key] = value;
+#define SIMPLEHASH_REPLACE_INT(hashmap, type, key, value)      \
+{                                                              \
+	type *entry = malloc(sizeof(type));                        \
+	if (!entry)                                                \
+		I_Error("%s:%d: Out of memory\n", __func__, __LINE__); \
+	entry->k = (key);                                          \
+	entry->v = (value);                                        \
+                                                               \
+	type *oldentry;                                            \
+	HASH_REPLACE_INT((hashmap), k, entry, oldentry);           \
+	if (oldentry)                                              \
+		free(oldentry);                                        \
+}
+
+#define SIMPLEHASH_CLEAR(hashmap, type)       \
+{                                             \
+	type *entry, *tmpentry;                   \
+	HASH_ITER(hh, (hashmap), entry, tmpentry) \
+	{                                         \
+		HASH_DEL((hashmap), entry);           \
+		free(entry);                          \
+	}                                         \
+}
+
+// value = hashmap<type>[key] or fallback;
+#define SIMPLEHASH_FIND_INT(hashmap, type, key, fallback, value) \
+{                                                                \
+	int tmpkey = (key);                                          \
+	type *entry;                                                 \
+	HASH_FIND_INT((hashmap), &tmpkey, entry);                    \
+	(value) = entry ? entry->v : (int)(fallback);                \
+}
+
+#endif //__SIMPLEHASH__
diff --git a/src/uthash.h b/src/uthash.h
new file mode 100644
index 0000000000000000000000000000000000000000..68693bf39603d91a529ca8f8c46ad720aa4f094a
--- /dev/null
+++ b/src/uthash.h
@@ -0,0 +1,1140 @@
+/*
+Copyright (c) 2003-2022, Troy D. Hanson  https://troydhanson.github.io/uthash/
+All rights reserved.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are met:
+
+    * Redistributions of source code must retain the above copyright
+      notice, this list of conditions and the following disclaimer.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
+IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
+TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
+PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER
+OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+
+#ifndef UTHASH_H
+#define UTHASH_H
+
+#define UTHASH_VERSION 2.3.0
+
+#include <string.h>   /* memcmp, memset, strlen */
+#include <stddef.h>   /* ptrdiff_t */
+#include <stdlib.h>   /* exit */
+
+#if defined(HASH_DEFINE_OWN_STDINT) && HASH_DEFINE_OWN_STDINT
+/* This codepath is provided for backward compatibility, but I plan to remove it. */
+#warning "HASH_DEFINE_OWN_STDINT is deprecated; please use HASH_NO_STDINT instead"
+typedef unsigned int uint32_t;
+typedef unsigned char uint8_t;
+#elif defined(HASH_NO_STDINT) && HASH_NO_STDINT
+#else
+#include <stdint.h>   /* uint8_t, uint32_t */
+#endif
+
+/* These macros use decltype or the earlier __typeof GNU extension.
+   As decltype is only available in newer compilers (VS2010 or gcc 4.3+
+   when compiling c++ source) this code uses whatever method is needed
+   or, for VS2008 where neither is available, uses casting workarounds. */
+#if !defined(DECLTYPE) && !defined(NO_DECLTYPE)
+#if defined(_MSC_VER)   /* MS compiler */
+#if _MSC_VER >= 1600 && defined(__cplusplus)  /* VS2010 or newer in C++ mode */
+#define DECLTYPE(x) (decltype(x))
+#else                   /* VS2008 or older (or VS2010 in C mode) */
+#define NO_DECLTYPE
+#endif
+#elif defined(__MCST__)  /* Elbrus C Compiler */
+#define DECLTYPE(x) (__typeof(x))
+#elif defined(__BORLANDC__) || defined(__ICCARM__) || defined(__LCC__) || defined(__WATCOMC__)
+#define NO_DECLTYPE
+#else                   /* GNU, Sun and other compilers */
+#define DECLTYPE(x) (__typeof(x))
+#endif
+#endif
+
+#ifdef NO_DECLTYPE
+#define DECLTYPE(x)
+#define DECLTYPE_ASSIGN(dst,src)                                                 \
+do {                                                                             \
+  char **_da_dst = (char**)(&(dst));                                             \
+  *_da_dst = (char*)(src);                                                       \
+} while (0)
+#else
+#define DECLTYPE_ASSIGN(dst,src)                                                 \
+do {                                                                             \
+  (dst) = DECLTYPE(dst)(src);                                                    \
+} while (0)
+#endif
+
+#ifndef uthash_malloc
+#define uthash_malloc(sz) malloc(sz)      /* malloc fcn                      */
+#endif
+#ifndef uthash_free
+#define uthash_free(ptr,sz) free(ptr)     /* free fcn                        */
+#endif
+#ifndef uthash_bzero
+#define uthash_bzero(a,n) memset(a,'\0',n)
+#endif
+#ifndef uthash_strlen
+#define uthash_strlen(s) strlen(s)
+#endif
+
+#ifndef HASH_FUNCTION
+#define HASH_FUNCTION(keyptr,keylen,hashv) HASH_JEN(keyptr, keylen, hashv)
+#endif
+
+#ifndef HASH_KEYCMP
+#define HASH_KEYCMP(a,b,n) memcmp(a,b,n)
+#endif
+
+#ifndef uthash_noexpand_fyi
+#define uthash_noexpand_fyi(tbl)          /* can be defined to log noexpand  */
+#endif
+#ifndef uthash_expand_fyi
+#define uthash_expand_fyi(tbl)            /* can be defined to log expands   */
+#endif
+
+#ifndef HASH_NONFATAL_OOM
+#define HASH_NONFATAL_OOM 0
+#endif
+
+#if HASH_NONFATAL_OOM
+/* malloc failures can be recovered from */
+
+#ifndef uthash_nonfatal_oom
+#define uthash_nonfatal_oom(obj) do {} while (0)    /* non-fatal OOM error */
+#endif
+
+#define HASH_RECORD_OOM(oomed) do { (oomed) = 1; } while (0)
+#define IF_HASH_NONFATAL_OOM(x) x
+
+#else
+/* malloc failures result in lost memory, hash tables are unusable */
+
+#ifndef uthash_fatal
+#define uthash_fatal(msg) exit(-1)        /* fatal OOM error */
+#endif
+
+#define HASH_RECORD_OOM(oomed) uthash_fatal("out of memory")
+#define IF_HASH_NONFATAL_OOM(x)
+
+#endif
+
+/* initial number of buckets */
+#define HASH_INITIAL_NUM_BUCKETS 32U     /* initial number of buckets        */
+#define HASH_INITIAL_NUM_BUCKETS_LOG2 5U /* lg2 of initial number of buckets */
+#define HASH_BKT_CAPACITY_THRESH 10U     /* expand when bucket count reaches */
+
+/* calculate the element whose hash handle address is hhp */
+#define ELMT_FROM_HH(tbl,hhp) ((void*)(((char*)(hhp)) - ((tbl)->hho)))
+/* calculate the hash handle from element address elp */
+#define HH_FROM_ELMT(tbl,elp) ((UT_hash_handle*)(void*)(((char*)(elp)) + ((tbl)->hho)))
+
+#define HASH_ROLLBACK_BKT(hh, head, itemptrhh)                                   \
+do {                                                                             \
+  struct UT_hash_handle *_hd_hh_item = (itemptrhh);                              \
+  unsigned _hd_bkt;                                                              \
+  HASH_TO_BKT(_hd_hh_item->hashv, (head)->hh.tbl->num_buckets, _hd_bkt);         \
+  (head)->hh.tbl->buckets[_hd_bkt].count++;                                      \
+  _hd_hh_item->hh_next = NULL;                                                   \
+  _hd_hh_item->hh_prev = NULL;                                                   \
+} while (0)
+
+#define HASH_VALUE(keyptr,keylen,hashv)                                          \
+do {                                                                             \
+  HASH_FUNCTION(keyptr, keylen, hashv);                                          \
+} while (0)
+
+#define HASH_FIND_BYHASHVALUE(hh,head,keyptr,keylen,hashval,out)                 \
+do {                                                                             \
+  (out) = NULL;                                                                  \
+  if (head) {                                                                    \
+    unsigned _hf_bkt;                                                            \
+    HASH_TO_BKT(hashval, (head)->hh.tbl->num_buckets, _hf_bkt);                  \
+    if (HASH_BLOOM_TEST((head)->hh.tbl, hashval) != 0) {                         \
+      HASH_FIND_IN_BKT((head)->hh.tbl, hh, (head)->hh.tbl->buckets[ _hf_bkt ], keyptr, keylen, hashval, out); \
+    }                                                                            \
+  }                                                                              \
+} while (0)
+
+#define HASH_FIND(hh,head,keyptr,keylen,out)                                     \
+do {                                                                             \
+  (out) = NULL;                                                                  \
+  if (head) {                                                                    \
+    unsigned _hf_hashv;                                                          \
+    HASH_VALUE(keyptr, keylen, _hf_hashv);                                       \
+    HASH_FIND_BYHASHVALUE(hh, head, keyptr, keylen, _hf_hashv, out);             \
+  }                                                                              \
+} while (0)
+
+#ifdef HASH_BLOOM
+#define HASH_BLOOM_BITLEN (1UL << HASH_BLOOM)
+#define HASH_BLOOM_BYTELEN (HASH_BLOOM_BITLEN/8UL) + (((HASH_BLOOM_BITLEN%8UL)!=0UL) ? 1UL : 0UL)
+#define HASH_BLOOM_MAKE(tbl,oomed)                                               \
+do {                                                                             \
+  (tbl)->bloom_nbits = HASH_BLOOM;                                               \
+  (tbl)->bloom_bv = (uint8_t*)uthash_malloc(HASH_BLOOM_BYTELEN);                 \
+  if (!(tbl)->bloom_bv) {                                                        \
+    HASH_RECORD_OOM(oomed);                                                      \
+  } else {                                                                       \
+    uthash_bzero((tbl)->bloom_bv, HASH_BLOOM_BYTELEN);                           \
+    (tbl)->bloom_sig = HASH_BLOOM_SIGNATURE;                                     \
+  }                                                                              \
+} while (0)
+
+#define HASH_BLOOM_FREE(tbl)                                                     \
+do {                                                                             \
+  uthash_free((tbl)->bloom_bv, HASH_BLOOM_BYTELEN);                              \
+} while (0)
+
+#define HASH_BLOOM_BITSET(bv,idx) (bv[(idx)/8U] |= (1U << ((idx)%8U)))
+#define HASH_BLOOM_BITTEST(bv,idx) (bv[(idx)/8U] & (1U << ((idx)%8U)))
+
+#define HASH_BLOOM_ADD(tbl,hashv)                                                \
+  HASH_BLOOM_BITSET((tbl)->bloom_bv, ((hashv) & (uint32_t)((1UL << (tbl)->bloom_nbits) - 1U)))
+
+#define HASH_BLOOM_TEST(tbl,hashv)                                               \
+  HASH_BLOOM_BITTEST((tbl)->bloom_bv, ((hashv) & (uint32_t)((1UL << (tbl)->bloom_nbits) - 1U)))
+
+#else
+#define HASH_BLOOM_MAKE(tbl,oomed)
+#define HASH_BLOOM_FREE(tbl)
+#define HASH_BLOOM_ADD(tbl,hashv)
+#define HASH_BLOOM_TEST(tbl,hashv) (1)
+#define HASH_BLOOM_BYTELEN 0U
+#endif
+
+#define HASH_MAKE_TABLE(hh,head,oomed)                                           \
+do {                                                                             \
+  (head)->hh.tbl = (UT_hash_table*)uthash_malloc(sizeof(UT_hash_table));         \
+  if (!(head)->hh.tbl) {                                                         \
+    HASH_RECORD_OOM(oomed);                                                      \
+  } else {                                                                       \
+    uthash_bzero((head)->hh.tbl, sizeof(UT_hash_table));                         \
+    (head)->hh.tbl->tail = &((head)->hh);                                        \
+    (head)->hh.tbl->num_buckets = HASH_INITIAL_NUM_BUCKETS;                      \
+    (head)->hh.tbl->log2_num_buckets = HASH_INITIAL_NUM_BUCKETS_LOG2;            \
+    (head)->hh.tbl->hho = (char*)(&(head)->hh) - (char*)(head);                  \
+    (head)->hh.tbl->buckets = (UT_hash_bucket*)uthash_malloc(                    \
+        HASH_INITIAL_NUM_BUCKETS * sizeof(struct UT_hash_bucket));               \
+    (head)->hh.tbl->signature = HASH_SIGNATURE;                                  \
+    if (!(head)->hh.tbl->buckets) {                                              \
+      HASH_RECORD_OOM(oomed);                                                    \
+      uthash_free((head)->hh.tbl, sizeof(UT_hash_table));                        \
+    } else {                                                                     \
+      uthash_bzero((head)->hh.tbl->buckets,                                      \
+          HASH_INITIAL_NUM_BUCKETS * sizeof(struct UT_hash_bucket));             \
+      HASH_BLOOM_MAKE((head)->hh.tbl, oomed);                                    \
+      IF_HASH_NONFATAL_OOM(                                                      \
+        if (oomed) {                                                             \
+          uthash_free((head)->hh.tbl->buckets,                                   \
+              HASH_INITIAL_NUM_BUCKETS*sizeof(struct UT_hash_bucket));           \
+          uthash_free((head)->hh.tbl, sizeof(UT_hash_table));                    \
+        }                                                                        \
+      )                                                                          \
+    }                                                                            \
+  }                                                                              \
+} while (0)
+
+#define HASH_REPLACE_BYHASHVALUE_INORDER(hh,head,fieldname,keylen_in,hashval,add,replaced,cmpfcn) \
+do {                                                                             \
+  (replaced) = NULL;                                                             \
+  HASH_FIND_BYHASHVALUE(hh, head, &((add)->fieldname), keylen_in, hashval, replaced); \
+  if (replaced) {                                                                \
+    HASH_DELETE(hh, head, replaced);                                             \
+  }                                                                              \
+  HASH_ADD_KEYPTR_BYHASHVALUE_INORDER(hh, head, &((add)->fieldname), keylen_in, hashval, add, cmpfcn); \
+} while (0)
+
+#define HASH_REPLACE_BYHASHVALUE(hh,head,fieldname,keylen_in,hashval,add,replaced) \
+do {                                                                             \
+  (replaced) = NULL;                                                             \
+  HASH_FIND_BYHASHVALUE(hh, head, &((add)->fieldname), keylen_in, hashval, replaced); \
+  if (replaced) {                                                                \
+    HASH_DELETE(hh, head, replaced);                                             \
+  }                                                                              \
+  HASH_ADD_KEYPTR_BYHASHVALUE(hh, head, &((add)->fieldname), keylen_in, hashval, add); \
+} while (0)
+
+#define HASH_REPLACE(hh,head,fieldname,keylen_in,add,replaced)                   \
+do {                                                                             \
+  unsigned _hr_hashv;                                                            \
+  HASH_VALUE(&((add)->fieldname), keylen_in, _hr_hashv);                         \
+  HASH_REPLACE_BYHASHVALUE(hh, head, fieldname, keylen_in, _hr_hashv, add, replaced); \
+} while (0)
+
+#define HASH_REPLACE_INORDER(hh,head,fieldname,keylen_in,add,replaced,cmpfcn)    \
+do {                                                                             \
+  unsigned _hr_hashv;                                                            \
+  HASH_VALUE(&((add)->fieldname), keylen_in, _hr_hashv);                         \
+  HASH_REPLACE_BYHASHVALUE_INORDER(hh, head, fieldname, keylen_in, _hr_hashv, add, replaced, cmpfcn); \
+} while (0)
+
+#define HASH_APPEND_LIST(hh, head, add)                                          \
+do {                                                                             \
+  (add)->hh.next = NULL;                                                         \
+  (add)->hh.prev = ELMT_FROM_HH((head)->hh.tbl, (head)->hh.tbl->tail);           \
+  (head)->hh.tbl->tail->next = (add);                                            \
+  (head)->hh.tbl->tail = &((add)->hh);                                           \
+} while (0)
+
+#define HASH_AKBI_INNER_LOOP(hh,head,add,cmpfcn)                                 \
+do {                                                                             \
+  do {                                                                           \
+    if (cmpfcn(DECLTYPE(head)(_hs_iter), add) > 0) {                             \
+      break;                                                                     \
+    }                                                                            \
+  } while ((_hs_iter = HH_FROM_ELMT((head)->hh.tbl, _hs_iter)->next));           \
+} while (0)
+
+#ifdef NO_DECLTYPE
+#undef HASH_AKBI_INNER_LOOP
+#define HASH_AKBI_INNER_LOOP(hh,head,add,cmpfcn)                                 \
+do {                                                                             \
+  char *_hs_saved_head = (char*)(head);                                          \
+  do {                                                                           \
+    DECLTYPE_ASSIGN(head, _hs_iter);                                             \
+    if (cmpfcn(head, add) > 0) {                                                 \
+      DECLTYPE_ASSIGN(head, _hs_saved_head);                                     \
+      break;                                                                     \
+    }                                                                            \
+    DECLTYPE_ASSIGN(head, _hs_saved_head);                                       \
+  } while ((_hs_iter = HH_FROM_ELMT((head)->hh.tbl, _hs_iter)->next));           \
+} while (0)
+#endif
+
+#if HASH_NONFATAL_OOM
+
+#define HASH_ADD_TO_TABLE(hh,head,keyptr,keylen_in,hashval,add,oomed)            \
+do {                                                                             \
+  if (!(oomed)) {                                                                \
+    unsigned _ha_bkt;                                                            \
+    (head)->hh.tbl->num_items++;                                                 \
+    HASH_TO_BKT(hashval, (head)->hh.tbl->num_buckets, _ha_bkt);                  \
+    HASH_ADD_TO_BKT((head)->hh.tbl->buckets[_ha_bkt], hh, &(add)->hh, oomed);    \
+    if (oomed) {                                                                 \
+      HASH_ROLLBACK_BKT(hh, head, &(add)->hh);                                   \
+      HASH_DELETE_HH(hh, head, &(add)->hh);                                      \
+      (add)->hh.tbl = NULL;                                                      \
+      uthash_nonfatal_oom(add);                                                  \
+    } else {                                                                     \
+      HASH_BLOOM_ADD((head)->hh.tbl, hashval);                                   \
+      HASH_EMIT_KEY(hh, head, keyptr, keylen_in);                                \
+    }                                                                            \
+  } else {                                                                       \
+    (add)->hh.tbl = NULL;                                                        \
+    uthash_nonfatal_oom(add);                                                    \
+  }                                                                              \
+} while (0)
+
+#else
+
+#define HASH_ADD_TO_TABLE(hh,head,keyptr,keylen_in,hashval,add,oomed)            \
+do {                                                                             \
+  unsigned _ha_bkt;                                                              \
+  (head)->hh.tbl->num_items++;                                                   \
+  HASH_TO_BKT(hashval, (head)->hh.tbl->num_buckets, _ha_bkt);                    \
+  HASH_ADD_TO_BKT((head)->hh.tbl->buckets[_ha_bkt], hh, &(add)->hh, oomed);      \
+  HASH_BLOOM_ADD((head)->hh.tbl, hashval);                                       \
+  HASH_EMIT_KEY(hh, head, keyptr, keylen_in);                                    \
+} while (0)
+
+#endif
+
+
+#define HASH_ADD_KEYPTR_BYHASHVALUE_INORDER(hh,head,keyptr,keylen_in,hashval,add,cmpfcn) \
+do {                                                                             \
+  IF_HASH_NONFATAL_OOM( int _ha_oomed = 0; )                                     \
+  (add)->hh.hashv = (hashval);                                                   \
+  (add)->hh.key = (char*) (keyptr);                                              \
+  (add)->hh.keylen = (unsigned) (keylen_in);                                     \
+  if (!(head)) {                                                                 \
+    (add)->hh.next = NULL;                                                       \
+    (add)->hh.prev = NULL;                                                       \
+    HASH_MAKE_TABLE(hh, add, _ha_oomed);                                         \
+    IF_HASH_NONFATAL_OOM( if (!_ha_oomed) { )                                    \
+      (head) = (add);                                                            \
+    IF_HASH_NONFATAL_OOM( } )                                                    \
+  } else {                                                                       \
+    void *_hs_iter = (head);                                                     \
+    (add)->hh.tbl = (head)->hh.tbl;                                              \
+    HASH_AKBI_INNER_LOOP(hh, head, add, cmpfcn);                                 \
+    if (_hs_iter) {                                                              \
+      (add)->hh.next = _hs_iter;                                                 \
+      if (((add)->hh.prev = HH_FROM_ELMT((head)->hh.tbl, _hs_iter)->prev)) {     \
+        HH_FROM_ELMT((head)->hh.tbl, (add)->hh.prev)->next = (add);              \
+      } else {                                                                   \
+        (head) = (add);                                                          \
+      }                                                                          \
+      HH_FROM_ELMT((head)->hh.tbl, _hs_iter)->prev = (add);                      \
+    } else {                                                                     \
+      HASH_APPEND_LIST(hh, head, add);                                           \
+    }                                                                            \
+  }                                                                              \
+  HASH_ADD_TO_TABLE(hh, head, keyptr, keylen_in, hashval, add, _ha_oomed);       \
+  HASH_FSCK(hh, head, "HASH_ADD_KEYPTR_BYHASHVALUE_INORDER");                    \
+} while (0)
+
+#define HASH_ADD_KEYPTR_INORDER(hh,head,keyptr,keylen_in,add,cmpfcn)             \
+do {                                                                             \
+  unsigned _hs_hashv;                                                            \
+  HASH_VALUE(keyptr, keylen_in, _hs_hashv);                                      \
+  HASH_ADD_KEYPTR_BYHASHVALUE_INORDER(hh, head, keyptr, keylen_in, _hs_hashv, add, cmpfcn); \
+} while (0)
+
+#define HASH_ADD_BYHASHVALUE_INORDER(hh,head,fieldname,keylen_in,hashval,add,cmpfcn) \
+  HASH_ADD_KEYPTR_BYHASHVALUE_INORDER(hh, head, &((add)->fieldname), keylen_in, hashval, add, cmpfcn)
+
+#define HASH_ADD_INORDER(hh,head,fieldname,keylen_in,add,cmpfcn)                 \
+  HASH_ADD_KEYPTR_INORDER(hh, head, &((add)->fieldname), keylen_in, add, cmpfcn)
+
+#define HASH_ADD_KEYPTR_BYHASHVALUE(hh,head,keyptr,keylen_in,hashval,add)        \
+do {                                                                             \
+  IF_HASH_NONFATAL_OOM( int _ha_oomed = 0; )                                     \
+  (add)->hh.hashv = (hashval);                                                   \
+  (add)->hh.key = (const void*) (keyptr);                                        \
+  (add)->hh.keylen = (unsigned) (keylen_in);                                     \
+  if (!(head)) {                                                                 \
+    (add)->hh.next = NULL;                                                       \
+    (add)->hh.prev = NULL;                                                       \
+    HASH_MAKE_TABLE(hh, add, _ha_oomed);                                         \
+    IF_HASH_NONFATAL_OOM( if (!_ha_oomed) { )                                    \
+      (head) = (add);                                                            \
+    IF_HASH_NONFATAL_OOM( } )                                                    \
+  } else {                                                                       \
+    (add)->hh.tbl = (head)->hh.tbl;                                              \
+    HASH_APPEND_LIST(hh, head, add);                                             \
+  }                                                                              \
+  HASH_ADD_TO_TABLE(hh, head, keyptr, keylen_in, hashval, add, _ha_oomed);       \
+  HASH_FSCK(hh, head, "HASH_ADD_KEYPTR_BYHASHVALUE");                            \
+} while (0)
+
+#define HASH_ADD_KEYPTR(hh,head,keyptr,keylen_in,add)                            \
+do {                                                                             \
+  unsigned _ha_hashv;                                                            \
+  HASH_VALUE(keyptr, keylen_in, _ha_hashv);                                      \
+  HASH_ADD_KEYPTR_BYHASHVALUE(hh, head, keyptr, keylen_in, _ha_hashv, add);      \
+} while (0)
+
+#define HASH_ADD_BYHASHVALUE(hh,head,fieldname,keylen_in,hashval,add)            \
+  HASH_ADD_KEYPTR_BYHASHVALUE(hh, head, &((add)->fieldname), keylen_in, hashval, add)
+
+#define HASH_ADD(hh,head,fieldname,keylen_in,add)                                \
+  HASH_ADD_KEYPTR(hh, head, &((add)->fieldname), keylen_in, add)
+
+#define HASH_TO_BKT(hashv,num_bkts,bkt)                                          \
+do {                                                                             \
+  bkt = ((hashv) & ((num_bkts) - 1U));                                           \
+} while (0)
+
+/* delete "delptr" from the hash table.
+ * "the usual" patch-up process for the app-order doubly-linked-list.
+ * The use of _hd_hh_del below deserves special explanation.
+ * These used to be expressed using (delptr) but that led to a bug
+ * if someone used the same symbol for the head and deletee, like
+ *  HASH_DELETE(hh,users,users);
+ * We want that to work, but by changing the head (users) below
+ * we were forfeiting our ability to further refer to the deletee (users)
+ * in the patch-up process. Solution: use scratch space to
+ * copy the deletee pointer, then the latter references are via that
+ * scratch pointer rather than through the repointed (users) symbol.
+ */
+#define HASH_DELETE(hh,head,delptr)                                              \
+    HASH_DELETE_HH(hh, head, &(delptr)->hh)
+
+#define HASH_DELETE_HH(hh,head,delptrhh)                                         \
+do {                                                                             \
+  const struct UT_hash_handle *_hd_hh_del = (delptrhh);                          \
+  if ((_hd_hh_del->prev == NULL) && (_hd_hh_del->next == NULL)) {                \
+    HASH_BLOOM_FREE((head)->hh.tbl);                                             \
+    uthash_free((head)->hh.tbl->buckets,                                         \
+                (head)->hh.tbl->num_buckets * sizeof(struct UT_hash_bucket));    \
+    uthash_free((head)->hh.tbl, sizeof(UT_hash_table));                          \
+    (head) = NULL;                                                               \
+  } else {                                                                       \
+    unsigned _hd_bkt;                                                            \
+    if (_hd_hh_del == (head)->hh.tbl->tail) {                                    \
+      (head)->hh.tbl->tail = HH_FROM_ELMT((head)->hh.tbl, _hd_hh_del->prev);     \
+    }                                                                            \
+    if (_hd_hh_del->prev != NULL) {                                              \
+      HH_FROM_ELMT((head)->hh.tbl, _hd_hh_del->prev)->next = _hd_hh_del->next;   \
+    } else {                                                                     \
+      DECLTYPE_ASSIGN(head, _hd_hh_del->next);                                   \
+    }                                                                            \
+    if (_hd_hh_del->next != NULL) {                                              \
+      HH_FROM_ELMT((head)->hh.tbl, _hd_hh_del->next)->prev = _hd_hh_del->prev;   \
+    }                                                                            \
+    HASH_TO_BKT(_hd_hh_del->hashv, (head)->hh.tbl->num_buckets, _hd_bkt);        \
+    HASH_DEL_IN_BKT((head)->hh.tbl->buckets[_hd_bkt], _hd_hh_del);               \
+    (head)->hh.tbl->num_items--;                                                 \
+  }                                                                              \
+  HASH_FSCK(hh, head, "HASH_DELETE_HH");                                         \
+} while (0)
+
+/* convenience forms of HASH_FIND/HASH_ADD/HASH_DEL */
+#define HASH_FIND_STR(head,findstr,out)                                          \
+do {                                                                             \
+    unsigned _uthash_hfstr_keylen = (unsigned)uthash_strlen(findstr);            \
+    HASH_FIND(hh, head, findstr, _uthash_hfstr_keylen, out);                     \
+} while (0)
+#define HASH_ADD_STR(head,strfield,add)                                          \
+do {                                                                             \
+    unsigned _uthash_hastr_keylen = (unsigned)uthash_strlen((add)->strfield);    \
+    HASH_ADD(hh, head, strfield[0], _uthash_hastr_keylen, add);                  \
+} while (0)
+#define HASH_REPLACE_STR(head,strfield,add,replaced)                             \
+do {                                                                             \
+    unsigned _uthash_hrstr_keylen = (unsigned)uthash_strlen((add)->strfield);    \
+    HASH_REPLACE(hh, head, strfield[0], _uthash_hrstr_keylen, add, replaced);    \
+} while (0)
+#define HASH_FIND_INT(head,findint,out)                                          \
+    HASH_FIND(hh,head,findint,sizeof(int),out)
+#define HASH_ADD_INT(head,intfield,add)                                          \
+    HASH_ADD(hh,head,intfield,sizeof(int),add)
+#define HASH_REPLACE_INT(head,intfield,add,replaced)                             \
+    HASH_REPLACE(hh,head,intfield,sizeof(int),add,replaced)
+#define HASH_FIND_PTR(head,findptr,out)                                          \
+    HASH_FIND(hh,head,findptr,sizeof(void *),out)
+#define HASH_ADD_PTR(head,ptrfield,add)                                          \
+    HASH_ADD(hh,head,ptrfield,sizeof(void *),add)
+#define HASH_REPLACE_PTR(head,ptrfield,add,replaced)                             \
+    HASH_REPLACE(hh,head,ptrfield,sizeof(void *),add,replaced)
+#define HASH_DEL(head,delptr)                                                    \
+    HASH_DELETE(hh,head,delptr)
+
+/* HASH_FSCK checks hash integrity on every add/delete when HASH_DEBUG is defined.
+ * This is for uthash developer only; it compiles away if HASH_DEBUG isn't defined.
+ */
+#ifdef HASH_DEBUG
+#include <stdio.h>   /* fprintf, stderr */
+#define HASH_OOPS(...) do { fprintf(stderr, __VA_ARGS__); exit(-1); } while (0)
+#define HASH_FSCK(hh,head,where)                                                 \
+do {                                                                             \
+  struct UT_hash_handle *_thh;                                                   \
+  if (head) {                                                                    \
+    unsigned _bkt_i;                                                             \
+    unsigned _count = 0;                                                         \
+    char *_prev;                                                                 \
+    for (_bkt_i = 0; _bkt_i < (head)->hh.tbl->num_buckets; ++_bkt_i) {           \
+      unsigned _bkt_count = 0;                                                   \
+      _thh = (head)->hh.tbl->buckets[_bkt_i].hh_head;                            \
+      _prev = NULL;                                                              \
+      while (_thh) {                                                             \
+        if (_prev != (char*)(_thh->hh_prev)) {                                   \
+          HASH_OOPS("%s: invalid hh_prev %p, actual %p\n",                       \
+              (where), (void*)_thh->hh_prev, (void*)_prev);                      \
+        }                                                                        \
+        _bkt_count++;                                                            \
+        _prev = (char*)(_thh);                                                   \
+        _thh = _thh->hh_next;                                                    \
+      }                                                                          \
+      _count += _bkt_count;                                                      \
+      if ((head)->hh.tbl->buckets[_bkt_i].count !=  _bkt_count) {                \
+        HASH_OOPS("%s: invalid bucket count %u, actual %u\n",                    \
+            (where), (head)->hh.tbl->buckets[_bkt_i].count, _bkt_count);         \
+      }                                                                          \
+    }                                                                            \
+    if (_count != (head)->hh.tbl->num_items) {                                   \
+      HASH_OOPS("%s: invalid hh item count %u, actual %u\n",                     \
+          (where), (head)->hh.tbl->num_items, _count);                           \
+    }                                                                            \
+    _count = 0;                                                                  \
+    _prev = NULL;                                                                \
+    _thh =  &(head)->hh;                                                         \
+    while (_thh) {                                                               \
+      _count++;                                                                  \
+      if (_prev != (char*)_thh->prev) {                                          \
+        HASH_OOPS("%s: invalid prev %p, actual %p\n",                            \
+            (where), (void*)_thh->prev, (void*)_prev);                           \
+      }                                                                          \
+      _prev = (char*)ELMT_FROM_HH((head)->hh.tbl, _thh);                         \
+      _thh = (_thh->next ? HH_FROM_ELMT((head)->hh.tbl, _thh->next) : NULL);     \
+    }                                                                            \
+    if (_count != (head)->hh.tbl->num_items) {                                   \
+      HASH_OOPS("%s: invalid app item count %u, actual %u\n",                    \
+          (where), (head)->hh.tbl->num_items, _count);                           \
+    }                                                                            \
+  }                                                                              \
+} while (0)
+#else
+#define HASH_FSCK(hh,head,where)
+#endif
+
+/* When compiled with -DHASH_EMIT_KEYS, length-prefixed keys are emitted to
+ * the descriptor to which this macro is defined for tuning the hash function.
+ * The app can #include <unistd.h> to get the prototype for write(2). */
+#ifdef HASH_EMIT_KEYS
+#define HASH_EMIT_KEY(hh,head,keyptr,fieldlen)                                   \
+do {                                                                             \
+  unsigned _klen = fieldlen;                                                     \
+  write(HASH_EMIT_KEYS, &_klen, sizeof(_klen));                                  \
+  write(HASH_EMIT_KEYS, keyptr, (unsigned long)fieldlen);                        \
+} while (0)
+#else
+#define HASH_EMIT_KEY(hh,head,keyptr,fieldlen)
+#endif
+
+/* The Bernstein hash function, used in Perl prior to v5.6. Note (x<<5+x)=x*33. */
+#define HASH_BER(key,keylen,hashv)                                               \
+do {                                                                             \
+  unsigned _hb_keylen = (unsigned)keylen;                                        \
+  const unsigned char *_hb_key = (const unsigned char*)(key);                    \
+  (hashv) = 0;                                                                   \
+  while (_hb_keylen-- != 0U) {                                                   \
+    (hashv) = (((hashv) << 5) + (hashv)) + *_hb_key++;                           \
+  }                                                                              \
+} while (0)
+
+
+/* SAX/FNV/OAT/JEN hash functions are macro variants of those listed at
+ * http://eternallyconfuzzled.com/tuts/algorithms/jsw_tut_hashing.aspx
+ * (archive link: https://archive.is/Ivcan )
+ */
+#define HASH_SAX(key,keylen,hashv)                                               \
+do {                                                                             \
+  unsigned _sx_i;                                                                \
+  const unsigned char *_hs_key = (const unsigned char*)(key);                    \
+  hashv = 0;                                                                     \
+  for (_sx_i=0; _sx_i < keylen; _sx_i++) {                                       \
+    hashv ^= (hashv << 5) + (hashv >> 2) + _hs_key[_sx_i];                       \
+  }                                                                              \
+} while (0)
+/* FNV-1a variation */
+#define HASH_FNV(key,keylen,hashv)                                               \
+do {                                                                             \
+  unsigned _fn_i;                                                                \
+  const unsigned char *_hf_key = (const unsigned char*)(key);                    \
+  (hashv) = 2166136261U;                                                         \
+  for (_fn_i=0; _fn_i < keylen; _fn_i++) {                                       \
+    hashv = hashv ^ _hf_key[_fn_i];                                              \
+    hashv = hashv * 16777619U;                                                   \
+  }                                                                              \
+} while (0)
+
+#define HASH_OAT(key,keylen,hashv)                                               \
+do {                                                                             \
+  unsigned _ho_i;                                                                \
+  const unsigned char *_ho_key=(const unsigned char*)(key);                      \
+  hashv = 0;                                                                     \
+  for(_ho_i=0; _ho_i < keylen; _ho_i++) {                                        \
+      hashv += _ho_key[_ho_i];                                                   \
+      hashv += (hashv << 10);                                                    \
+      hashv ^= (hashv >> 6);                                                     \
+  }                                                                              \
+  hashv += (hashv << 3);                                                         \
+  hashv ^= (hashv >> 11);                                                        \
+  hashv += (hashv << 15);                                                        \
+} while (0)
+
+#define HASH_JEN_MIX(a,b,c)                                                      \
+do {                                                                             \
+  a -= b; a -= c; a ^= ( c >> 13 );                                              \
+  b -= c; b -= a; b ^= ( a << 8 );                                               \
+  c -= a; c -= b; c ^= ( b >> 13 );                                              \
+  a -= b; a -= c; a ^= ( c >> 12 );                                              \
+  b -= c; b -= a; b ^= ( a << 16 );                                              \
+  c -= a; c -= b; c ^= ( b >> 5 );                                               \
+  a -= b; a -= c; a ^= ( c >> 3 );                                               \
+  b -= c; b -= a; b ^= ( a << 10 );                                              \
+  c -= a; c -= b; c ^= ( b >> 15 );                                              \
+} while (0)
+
+#define HASH_JEN(key,keylen,hashv)                                               \
+do {                                                                             \
+  unsigned _hj_i,_hj_j,_hj_k;                                                    \
+  unsigned const char *_hj_key=(unsigned const char*)(key);                      \
+  hashv = 0xfeedbeefu;                                                           \
+  _hj_i = _hj_j = 0x9e3779b9u;                                                   \
+  _hj_k = (unsigned)(keylen);                                                    \
+  while (_hj_k >= 12U) {                                                         \
+    _hj_i +=    (_hj_key[0] + ( (unsigned)_hj_key[1] << 8 )                      \
+        + ( (unsigned)_hj_key[2] << 16 )                                         \
+        + ( (unsigned)_hj_key[3] << 24 ) );                                      \
+    _hj_j +=    (_hj_key[4] + ( (unsigned)_hj_key[5] << 8 )                      \
+        + ( (unsigned)_hj_key[6] << 16 )                                         \
+        + ( (unsigned)_hj_key[7] << 24 ) );                                      \
+    hashv += (_hj_key[8] + ( (unsigned)_hj_key[9] << 8 )                         \
+        + ( (unsigned)_hj_key[10] << 16 )                                        \
+        + ( (unsigned)_hj_key[11] << 24 ) );                                     \
+                                                                                 \
+     HASH_JEN_MIX(_hj_i, _hj_j, hashv);                                          \
+                                                                                 \
+     _hj_key += 12;                                                              \
+     _hj_k -= 12U;                                                               \
+  }                                                                              \
+  hashv += (unsigned)(keylen);                                                   \
+  switch ( _hj_k ) {                                                             \
+    case 11: hashv += ( (unsigned)_hj_key[10] << 24 ); /* FALLTHROUGH */         \
+    case 10: hashv += ( (unsigned)_hj_key[9] << 16 );  /* FALLTHROUGH */         \
+    case 9:  hashv += ( (unsigned)_hj_key[8] << 8 );   /* FALLTHROUGH */         \
+    case 8:  _hj_j += ( (unsigned)_hj_key[7] << 24 );  /* FALLTHROUGH */         \
+    case 7:  _hj_j += ( (unsigned)_hj_key[6] << 16 );  /* FALLTHROUGH */         \
+    case 6:  _hj_j += ( (unsigned)_hj_key[5] << 8 );   /* FALLTHROUGH */         \
+    case 5:  _hj_j += _hj_key[4];                      /* FALLTHROUGH */         \
+    case 4:  _hj_i += ( (unsigned)_hj_key[3] << 24 );  /* FALLTHROUGH */         \
+    case 3:  _hj_i += ( (unsigned)_hj_key[2] << 16 );  /* FALLTHROUGH */         \
+    case 2:  _hj_i += ( (unsigned)_hj_key[1] << 8 );   /* FALLTHROUGH */         \
+    case 1:  _hj_i += _hj_key[0];                      /* FALLTHROUGH */         \
+    default: ;                                                                   \
+  }                                                                              \
+  HASH_JEN_MIX(_hj_i, _hj_j, hashv);                                             \
+} while (0)
+
+/* The Paul Hsieh hash function */
+#undef get16bits
+#if (defined(__GNUC__) && defined(__i386__)) || defined(__WATCOMC__)             \
+  || defined(_MSC_VER) || defined (__BORLANDC__) || defined (__TURBOC__)
+#define get16bits(d) (*((const uint16_t *) (d)))
+#endif
+
+#if !defined (get16bits)
+#define get16bits(d) ((((uint32_t)(((const uint8_t *)(d))[1])) << 8)             \
+                       +(uint32_t)(((const uint8_t *)(d))[0]) )
+#endif
+#define HASH_SFH(key,keylen,hashv)                                               \
+do {                                                                             \
+  unsigned const char *_sfh_key=(unsigned const char*)(key);                     \
+  uint32_t _sfh_tmp, _sfh_len = (uint32_t)keylen;                                \
+                                                                                 \
+  unsigned _sfh_rem = _sfh_len & 3U;                                             \
+  _sfh_len >>= 2;                                                                \
+  hashv = 0xcafebabeu;                                                           \
+                                                                                 \
+  /* Main loop */                                                                \
+  for (;_sfh_len > 0U; _sfh_len--) {                                             \
+    hashv    += get16bits (_sfh_key);                                            \
+    _sfh_tmp  = ((uint32_t)(get16bits (_sfh_key+2)) << 11) ^ hashv;              \
+    hashv     = (hashv << 16) ^ _sfh_tmp;                                        \
+    _sfh_key += 2U*sizeof (uint16_t);                                            \
+    hashv    += hashv >> 11;                                                     \
+  }                                                                              \
+                                                                                 \
+  /* Handle end cases */                                                         \
+  switch (_sfh_rem) {                                                            \
+    case 3: hashv += get16bits (_sfh_key);                                       \
+            hashv ^= hashv << 16;                                                \
+            hashv ^= (uint32_t)(_sfh_key[sizeof (uint16_t)]) << 18;              \
+            hashv += hashv >> 11;                                                \
+            break;                                                               \
+    case 2: hashv += get16bits (_sfh_key);                                       \
+            hashv ^= hashv << 11;                                                \
+            hashv += hashv >> 17;                                                \
+            break;                                                               \
+    case 1: hashv += *_sfh_key;                                                  \
+            hashv ^= hashv << 10;                                                \
+            hashv += hashv >> 1;                                                 \
+            break;                                                               \
+    default: ;                                                                   \
+  }                                                                              \
+                                                                                 \
+  /* Force "avalanching" of final 127 bits */                                    \
+  hashv ^= hashv << 3;                                                           \
+  hashv += hashv >> 5;                                                           \
+  hashv ^= hashv << 4;                                                           \
+  hashv += hashv >> 17;                                                          \
+  hashv ^= hashv << 25;                                                          \
+  hashv += hashv >> 6;                                                           \
+} while (0)
+
+/* iterate over items in a known bucket to find desired item */
+#define HASH_FIND_IN_BKT(tbl,hh,head,keyptr,keylen_in,hashval,out)               \
+do {                                                                             \
+  if ((head).hh_head != NULL) {                                                  \
+    DECLTYPE_ASSIGN(out, ELMT_FROM_HH(tbl, (head).hh_head));                     \
+  } else {                                                                       \
+    (out) = NULL;                                                                \
+  }                                                                              \
+  while ((out) != NULL) {                                                        \
+    if ((out)->hh.hashv == (hashval) && (out)->hh.keylen == (keylen_in)) {       \
+      if (HASH_KEYCMP((out)->hh.key, keyptr, keylen_in) == 0) {                  \
+        break;                                                                   \
+      }                                                                          \
+    }                                                                            \
+    if ((out)->hh.hh_next != NULL) {                                             \
+      DECLTYPE_ASSIGN(out, ELMT_FROM_HH(tbl, (out)->hh.hh_next));                \
+    } else {                                                                     \
+      (out) = NULL;                                                              \
+    }                                                                            \
+  }                                                                              \
+} while (0)
+
+/* add an item to a bucket  */
+#define HASH_ADD_TO_BKT(head,hh,addhh,oomed)                                     \
+do {                                                                             \
+  UT_hash_bucket *_ha_head = &(head);                                            \
+  _ha_head->count++;                                                             \
+  (addhh)->hh_next = _ha_head->hh_head;                                          \
+  (addhh)->hh_prev = NULL;                                                       \
+  if (_ha_head->hh_head != NULL) {                                               \
+    _ha_head->hh_head->hh_prev = (addhh);                                        \
+  }                                                                              \
+  _ha_head->hh_head = (addhh);                                                   \
+  if ((_ha_head->count >= ((_ha_head->expand_mult + 1U) * HASH_BKT_CAPACITY_THRESH)) \
+      && !(addhh)->tbl->noexpand) {                                              \
+    HASH_EXPAND_BUCKETS(addhh,(addhh)->tbl, oomed);                              \
+    IF_HASH_NONFATAL_OOM(                                                        \
+      if (oomed) {                                                               \
+        HASH_DEL_IN_BKT(head,addhh);                                             \
+      }                                                                          \
+    )                                                                            \
+  }                                                                              \
+} while (0)
+
+/* remove an item from a given bucket */
+#define HASH_DEL_IN_BKT(head,delhh)                                              \
+do {                                                                             \
+  UT_hash_bucket *_hd_head = &(head);                                            \
+  _hd_head->count--;                                                             \
+  if (_hd_head->hh_head == (delhh)) {                                            \
+    _hd_head->hh_head = (delhh)->hh_next;                                        \
+  }                                                                              \
+  if ((delhh)->hh_prev) {                                                        \
+    (delhh)->hh_prev->hh_next = (delhh)->hh_next;                                \
+  }                                                                              \
+  if ((delhh)->hh_next) {                                                        \
+    (delhh)->hh_next->hh_prev = (delhh)->hh_prev;                                \
+  }                                                                              \
+} while (0)
+
+/* Bucket expansion has the effect of doubling the number of buckets
+ * and redistributing the items into the new buckets. Ideally the
+ * items will distribute more or less evenly into the new buckets
+ * (the extent to which this is true is a measure of the quality of
+ * the hash function as it applies to the key domain).
+ *
+ * With the items distributed into more buckets, the chain length
+ * (item count) in each bucket is reduced. Thus by expanding buckets
+ * the hash keeps a bound on the chain length. This bounded chain
+ * length is the essence of how a hash provides constant time lookup.
+ *
+ * The calculation of tbl->ideal_chain_maxlen below deserves some
+ * explanation. First, keep in mind that we're calculating the ideal
+ * maximum chain length based on the *new* (doubled) bucket count.
+ * In fractions this is just n/b (n=number of items,b=new num buckets).
+ * Since the ideal chain length is an integer, we want to calculate
+ * ceil(n/b). We don't depend on floating point arithmetic in this
+ * hash, so to calculate ceil(n/b) with integers we could write
+ *
+ *      ceil(n/b) = (n/b) + ((n%b)?1:0)
+ *
+ * and in fact a previous version of this hash did just that.
+ * But now we have improved things a bit by recognizing that b is
+ * always a power of two. We keep its base 2 log handy (call it lb),
+ * so now we can write this with a bit shift and logical AND:
+ *
+ *      ceil(n/b) = (n>>lb) + ( (n & (b-1)) ? 1:0)
+ *
+ */
+#define HASH_EXPAND_BUCKETS(hh,tbl,oomed)                                        \
+do {                                                                             \
+  unsigned _he_bkt;                                                              \
+  unsigned _he_bkt_i;                                                            \
+  struct UT_hash_handle *_he_thh, *_he_hh_nxt;                                   \
+  UT_hash_bucket *_he_new_buckets, *_he_newbkt;                                  \
+  _he_new_buckets = (UT_hash_bucket*)uthash_malloc(                              \
+           sizeof(struct UT_hash_bucket) * (tbl)->num_buckets * 2U);             \
+  if (!_he_new_buckets) {                                                        \
+    HASH_RECORD_OOM(oomed);                                                      \
+  } else {                                                                       \
+    uthash_bzero(_he_new_buckets,                                                \
+        sizeof(struct UT_hash_bucket) * (tbl)->num_buckets * 2U);                \
+    (tbl)->ideal_chain_maxlen =                                                  \
+       ((tbl)->num_items >> ((tbl)->log2_num_buckets+1U)) +                      \
+       ((((tbl)->num_items & (((tbl)->num_buckets*2U)-1U)) != 0U) ? 1U : 0U);    \
+    (tbl)->nonideal_items = 0;                                                   \
+    for (_he_bkt_i = 0; _he_bkt_i < (tbl)->num_buckets; _he_bkt_i++) {           \
+      _he_thh = (tbl)->buckets[ _he_bkt_i ].hh_head;                             \
+      while (_he_thh != NULL) {                                                  \
+        _he_hh_nxt = _he_thh->hh_next;                                           \
+        HASH_TO_BKT(_he_thh->hashv, (tbl)->num_buckets * 2U, _he_bkt);           \
+        _he_newbkt = &(_he_new_buckets[_he_bkt]);                                \
+        if (++(_he_newbkt->count) > (tbl)->ideal_chain_maxlen) {                 \
+          (tbl)->nonideal_items++;                                               \
+          if (_he_newbkt->count > _he_newbkt->expand_mult * (tbl)->ideal_chain_maxlen) { \
+            _he_newbkt->expand_mult++;                                           \
+          }                                                                      \
+        }                                                                        \
+        _he_thh->hh_prev = NULL;                                                 \
+        _he_thh->hh_next = _he_newbkt->hh_head;                                  \
+        if (_he_newbkt->hh_head != NULL) {                                       \
+          _he_newbkt->hh_head->hh_prev = _he_thh;                                \
+        }                                                                        \
+        _he_newbkt->hh_head = _he_thh;                                           \
+        _he_thh = _he_hh_nxt;                                                    \
+      }                                                                          \
+    }                                                                            \
+    uthash_free((tbl)->buckets, (tbl)->num_buckets * sizeof(struct UT_hash_bucket)); \
+    (tbl)->num_buckets *= 2U;                                                    \
+    (tbl)->log2_num_buckets++;                                                   \
+    (tbl)->buckets = _he_new_buckets;                                            \
+    (tbl)->ineff_expands = ((tbl)->nonideal_items > ((tbl)->num_items >> 1)) ?   \
+        ((tbl)->ineff_expands+1U) : 0U;                                          \
+    if ((tbl)->ineff_expands > 1U) {                                             \
+      (tbl)->noexpand = 1;                                                       \
+      uthash_noexpand_fyi(tbl);                                                  \
+    }                                                                            \
+    uthash_expand_fyi(tbl);                                                      \
+  }                                                                              \
+} while (0)
+
+
+/* This is an adaptation of Simon Tatham's O(n log(n)) mergesort */
+/* Note that HASH_SORT assumes the hash handle name to be hh.
+ * HASH_SRT was added to allow the hash handle name to be passed in. */
+#define HASH_SORT(head,cmpfcn) HASH_SRT(hh,head,cmpfcn)
+#define HASH_SRT(hh,head,cmpfcn)                                                 \
+do {                                                                             \
+  unsigned _hs_i;                                                                \
+  unsigned _hs_looping,_hs_nmerges,_hs_insize,_hs_psize,_hs_qsize;               \
+  struct UT_hash_handle *_hs_p, *_hs_q, *_hs_e, *_hs_list, *_hs_tail;            \
+  if (head != NULL) {                                                            \
+    _hs_insize = 1;                                                              \
+    _hs_looping = 1;                                                             \
+    _hs_list = &((head)->hh);                                                    \
+    while (_hs_looping != 0U) {                                                  \
+      _hs_p = _hs_list;                                                          \
+      _hs_list = NULL;                                                           \
+      _hs_tail = NULL;                                                           \
+      _hs_nmerges = 0;                                                           \
+      while (_hs_p != NULL) {                                                    \
+        _hs_nmerges++;                                                           \
+        _hs_q = _hs_p;                                                           \
+        _hs_psize = 0;                                                           \
+        for (_hs_i = 0; _hs_i < _hs_insize; ++_hs_i) {                           \
+          _hs_psize++;                                                           \
+          _hs_q = ((_hs_q->next != NULL) ?                                       \
+            HH_FROM_ELMT((head)->hh.tbl, _hs_q->next) : NULL);                   \
+          if (_hs_q == NULL) {                                                   \
+            break;                                                               \
+          }                                                                      \
+        }                                                                        \
+        _hs_qsize = _hs_insize;                                                  \
+        while ((_hs_psize != 0U) || ((_hs_qsize != 0U) && (_hs_q != NULL))) {    \
+          if (_hs_psize == 0U) {                                                 \
+            _hs_e = _hs_q;                                                       \
+            _hs_q = ((_hs_q->next != NULL) ?                                     \
+              HH_FROM_ELMT((head)->hh.tbl, _hs_q->next) : NULL);                 \
+            _hs_qsize--;                                                         \
+          } else if ((_hs_qsize == 0U) || (_hs_q == NULL)) {                     \
+            _hs_e = _hs_p;                                                       \
+            if (_hs_p != NULL) {                                                 \
+              _hs_p = ((_hs_p->next != NULL) ?                                   \
+                HH_FROM_ELMT((head)->hh.tbl, _hs_p->next) : NULL);               \
+            }                                                                    \
+            _hs_psize--;                                                         \
+          } else if ((cmpfcn(                                                    \
+                DECLTYPE(head)(ELMT_FROM_HH((head)->hh.tbl, _hs_p)),             \
+                DECLTYPE(head)(ELMT_FROM_HH((head)->hh.tbl, _hs_q))              \
+                )) <= 0) {                                                       \
+            _hs_e = _hs_p;                                                       \
+            if (_hs_p != NULL) {                                                 \
+              _hs_p = ((_hs_p->next != NULL) ?                                   \
+                HH_FROM_ELMT((head)->hh.tbl, _hs_p->next) : NULL);               \
+            }                                                                    \
+            _hs_psize--;                                                         \
+          } else {                                                               \
+            _hs_e = _hs_q;                                                       \
+            _hs_q = ((_hs_q->next != NULL) ?                                     \
+              HH_FROM_ELMT((head)->hh.tbl, _hs_q->next) : NULL);                 \
+            _hs_qsize--;                                                         \
+          }                                                                      \
+          if ( _hs_tail != NULL ) {                                              \
+            _hs_tail->next = ((_hs_e != NULL) ?                                  \
+              ELMT_FROM_HH((head)->hh.tbl, _hs_e) : NULL);                       \
+          } else {                                                               \
+            _hs_list = _hs_e;                                                    \
+          }                                                                      \
+          if (_hs_e != NULL) {                                                   \
+            _hs_e->prev = ((_hs_tail != NULL) ?                                  \
+              ELMT_FROM_HH((head)->hh.tbl, _hs_tail) : NULL);                    \
+          }                                                                      \
+          _hs_tail = _hs_e;                                                      \
+        }                                                                        \
+        _hs_p = _hs_q;                                                           \
+      }                                                                          \
+      if (_hs_tail != NULL) {                                                    \
+        _hs_tail->next = NULL;                                                   \
+      }                                                                          \
+      if (_hs_nmerges <= 1U) {                                                   \
+        _hs_looping = 0;                                                         \
+        (head)->hh.tbl->tail = _hs_tail;                                         \
+        DECLTYPE_ASSIGN(head, ELMT_FROM_HH((head)->hh.tbl, _hs_list));           \
+      }                                                                          \
+      _hs_insize *= 2U;                                                          \
+    }                                                                            \
+    HASH_FSCK(hh, head, "HASH_SRT");                                             \
+  }                                                                              \
+} while (0)
+
+/* This function selects items from one hash into another hash.
+ * The end result is that the selected items have dual presence
+ * in both hashes. There is no copy of the items made; rather
+ * they are added into the new hash through a secondary hash
+ * hash handle that must be present in the structure. */
+#define HASH_SELECT(hh_dst, dst, hh_src, src, cond)                              \
+do {                                                                             \
+  unsigned _src_bkt, _dst_bkt;                                                   \
+  void *_last_elt = NULL, *_elt;                                                 \
+  UT_hash_handle *_src_hh, *_dst_hh, *_last_elt_hh=NULL;                         \
+  ptrdiff_t _dst_hho = ((char*)(&(dst)->hh_dst) - (char*)(dst));                 \
+  if ((src) != NULL) {                                                           \
+    for (_src_bkt=0; _src_bkt < (src)->hh_src.tbl->num_buckets; _src_bkt++) {    \
+      for (_src_hh = (src)->hh_src.tbl->buckets[_src_bkt].hh_head;               \
+        _src_hh != NULL;                                                         \
+        _src_hh = _src_hh->hh_next) {                                            \
+        _elt = ELMT_FROM_HH((src)->hh_src.tbl, _src_hh);                         \
+        if (cond(_elt)) {                                                        \
+          IF_HASH_NONFATAL_OOM( int _hs_oomed = 0; )                             \
+          _dst_hh = (UT_hash_handle*)(void*)(((char*)_elt) + _dst_hho);          \
+          _dst_hh->key = _src_hh->key;                                           \
+          _dst_hh->keylen = _src_hh->keylen;                                     \
+          _dst_hh->hashv = _src_hh->hashv;                                       \
+          _dst_hh->prev = _last_elt;                                             \
+          _dst_hh->next = NULL;                                                  \
+          if (_last_elt_hh != NULL) {                                            \
+            _last_elt_hh->next = _elt;                                           \
+          }                                                                      \
+          if ((dst) == NULL) {                                                   \
+            DECLTYPE_ASSIGN(dst, _elt);                                          \
+            HASH_MAKE_TABLE(hh_dst, dst, _hs_oomed);                             \
+            IF_HASH_NONFATAL_OOM(                                                \
+              if (_hs_oomed) {                                                   \
+                uthash_nonfatal_oom(_elt);                                       \
+                (dst) = NULL;                                                    \
+                continue;                                                        \
+              }                                                                  \
+            )                                                                    \
+          } else {                                                               \
+            _dst_hh->tbl = (dst)->hh_dst.tbl;                                    \
+          }                                                                      \
+          HASH_TO_BKT(_dst_hh->hashv, _dst_hh->tbl->num_buckets, _dst_bkt);      \
+          HASH_ADD_TO_BKT(_dst_hh->tbl->buckets[_dst_bkt], hh_dst, _dst_hh, _hs_oomed); \
+          (dst)->hh_dst.tbl->num_items++;                                        \
+          IF_HASH_NONFATAL_OOM(                                                  \
+            if (_hs_oomed) {                                                     \
+              HASH_ROLLBACK_BKT(hh_dst, dst, _dst_hh);                           \
+              HASH_DELETE_HH(hh_dst, dst, _dst_hh);                              \
+              _dst_hh->tbl = NULL;                                               \
+              uthash_nonfatal_oom(_elt);                                         \
+              continue;                                                          \
+            }                                                                    \
+          )                                                                      \
+          HASH_BLOOM_ADD(_dst_hh->tbl, _dst_hh->hashv);                          \
+          _last_elt = _elt;                                                      \
+          _last_elt_hh = _dst_hh;                                                \
+        }                                                                        \
+      }                                                                          \
+    }                                                                            \
+  }                                                                              \
+  HASH_FSCK(hh_dst, dst, "HASH_SELECT");                                         \
+} while (0)
+
+#define HASH_CLEAR(hh,head)                                                      \
+do {                                                                             \
+  if ((head) != NULL) {                                                          \
+    HASH_BLOOM_FREE((head)->hh.tbl);                                             \
+    uthash_free((head)->hh.tbl->buckets,                                         \
+                (head)->hh.tbl->num_buckets*sizeof(struct UT_hash_bucket));      \
+    uthash_free((head)->hh.tbl, sizeof(UT_hash_table));                          \
+    (head) = NULL;                                                               \
+  }                                                                              \
+} while (0)
+
+#define HASH_OVERHEAD(hh,head)                                                   \
+ (((head) != NULL) ? (                                                           \
+ (size_t)(((head)->hh.tbl->num_items   * sizeof(UT_hash_handle))   +             \
+          ((head)->hh.tbl->num_buckets * sizeof(UT_hash_bucket))   +             \
+           sizeof(UT_hash_table)                                   +             \
+           (HASH_BLOOM_BYTELEN))) : 0U)
+
+#ifdef NO_DECLTYPE
+#define HASH_ITER(hh,head,el,tmp)                                                \
+for(((el)=(head)), ((*(char**)(&(tmp)))=(char*)((head!=NULL)?(head)->hh.next:NULL)); \
+  (el) != NULL; ((el)=(tmp)), ((*(char**)(&(tmp)))=(char*)((tmp!=NULL)?(tmp)->hh.next:NULL)))
+#else
+#define HASH_ITER(hh,head,el,tmp)                                                \
+for(((el)=(head)), ((tmp)=DECLTYPE(el)((head!=NULL)?(head)->hh.next:NULL));      \
+  (el) != NULL; ((el)=(tmp)), ((tmp)=DECLTYPE(el)((tmp!=NULL)?(tmp)->hh.next:NULL)))
+#endif
+
+/* obtain a count of items in the hash */
+#define HASH_COUNT(head) HASH_CNT(hh,head)
+#define HASH_CNT(hh,head) ((head != NULL)?((head)->hh.tbl->num_items):0U)
+
+typedef struct UT_hash_bucket {
+   struct UT_hash_handle *hh_head;
+   unsigned count;
+
+   /* expand_mult is normally set to 0. In this situation, the max chain length
+    * threshold is enforced at its default value, HASH_BKT_CAPACITY_THRESH. (If
+    * the bucket's chain exceeds this length, bucket expansion is triggered).
+    * However, setting expand_mult to a non-zero value delays bucket expansion
+    * (that would be triggered by additions to this particular bucket)
+    * until its chain length reaches a *multiple* of HASH_BKT_CAPACITY_THRESH.
+    * (The multiplier is simply expand_mult+1). The whole idea of this
+    * multiplier is to reduce bucket expansions, since they are expensive, in
+    * situations where we know that a particular bucket tends to be overused.
+    * It is better to let its chain length grow to a longer yet-still-bounded
+    * value, than to do an O(n) bucket expansion too often.
+    */
+   unsigned expand_mult;
+
+} UT_hash_bucket;
+
+/* random signature used only to find hash tables in external analysis */
+#define HASH_SIGNATURE 0xa0111fe1u
+#define HASH_BLOOM_SIGNATURE 0xb12220f2u
+
+typedef struct UT_hash_table {
+   UT_hash_bucket *buckets;
+   unsigned num_buckets, log2_num_buckets;
+   unsigned num_items;
+   struct UT_hash_handle *tail; /* tail hh in app order, for fast append    */
+   ptrdiff_t hho; /* hash handle offset (byte pos of hash handle in element */
+
+   /* in an ideal situation (all buckets used equally), no bucket would have
+    * more than ceil(#items/#buckets) items. that's the ideal chain length. */
+   unsigned ideal_chain_maxlen;
+
+   /* nonideal_items is the number of items in the hash whose chain position
+    * exceeds the ideal chain maxlen. these items pay the penalty for an uneven
+    * hash distribution; reaching them in a chain traversal takes >ideal steps */
+   unsigned nonideal_items;
+
+   /* ineffective expands occur when a bucket doubling was performed, but
+    * afterward, more than half the items in the hash had nonideal chain
+    * positions. If this happens on two consecutive expansions we inhibit any
+    * further expansion, as it's not helping; this happens when the hash
+    * function isn't a good fit for the key domain. When expansion is inhibited
+    * the hash will still work, albeit no longer in constant time. */
+   unsigned ineff_expands, noexpand;
+
+   uint32_t signature; /* used only to find hash tables in external analysis */
+#ifdef HASH_BLOOM
+   uint32_t bloom_sig; /* used only to test bloom exists in external analysis */
+   uint8_t *bloom_bv;
+   uint8_t bloom_nbits;
+#endif
+
+} UT_hash_table;
+
+typedef struct UT_hash_handle {
+   struct UT_hash_table *tbl;
+   void *prev;                       /* prev element in app order      */
+   void *next;                       /* next element in app order      */
+   struct UT_hash_handle *hh_prev;   /* previous hh in bucket order    */
+   struct UT_hash_handle *hh_next;   /* next hh in bucket order        */
+   const void *key;                  /* ptr to enclosing struct's key  */
+   unsigned keylen;                  /* enclosing struct's key len     */
+   unsigned hashv;                   /* result of hash-fcn(key)        */
+} UT_hash_handle;
+
+#endif /* UTHASH_H */