Combination revert and hack. Remove the ImmediateCheckpointMiss metric, use lua to set the Preference as required. This code assumes the default value of TimingWindowSecondsHold is in place normally: improvements to restore non default values are appreciated.

stepmania/Themes/default/Scripts/00 init.lua

@@ -12,6 +12,8 @@ Trace = lua.Trace
 Warn = lua.Warn
 print = Trace
 
+PREFSMAN:SetPreferenceToDefault("TimingWindowSecondsHold");
+
 PLAYER_1 = "PlayerNumber_P1"
 PLAYER_2 = "PlayerNumber_P2"
 NUM_PLAYERS = #PlayerNumber

stepmania/Themes/default/metrics.ini

@@ -2387,7 +2387,6 @@ CheckpointsUseTimeSignatures=false
 InitialHoldLife=1
 RollBodyIncrementsCombo=true
 CheckpointsTapsSeparateJudgment=true
-ImmediateCheckpointMiss=false
 
 [PlayerShared]
 Fallback="Player"

stepmania/Themes/pump/Scripts/00 init.lua

@@ -0,0 +1,52 @@
+-- This file is always executed first.
+
+-- Override Lua's upper and lower functions with our own, which is always UTF-8.
+if Uppercase then
+	string.upper = Uppercase
+	string.lower = Lowercase
+	Uppercase = nil -- don't use directly
+	Lowercase = nil -- don't use directly
+end
+
+Trace = lua.Trace
+Warn = lua.Warn
+print = Trace
+
+PREFSMAN:SetPreference("TimingWindowSecondsHold",0);
+
+PLAYER_1 = "PlayerNumber_P1"
+PLAYER_2 = "PlayerNumber_P2"
+NUM_PLAYERS = #PlayerNumber
+
+function string:find_last( text )
+	local LastPos = 0;
+	while true do
+		local p = string.find( self, text, LastPos+1, true );
+		if not p then return LastPos end
+		LastPos = p;
+	end
+end
+
+-- (c) 2006 Glenn Maynard
+-- All rights reserved.
+--
+-- Permission is hereby granted, free of charge, to any person obtaining a
+-- copy of this software and associated documentation files (the
+-- "Software"), to deal in the Software without restriction, including
+-- without limitation the rights to use, copy, modify, merge, publish,
+-- distribute, and/or sell copies of the Software, and to permit persons to
+-- whom the Software is furnished to do so, provided that the above
+-- copyright notice(s) and this permission notice appear in all copies of
+-- the Software and that both the above copyright notice(s) and this
+-- permission notice appear in supporting documentation.
+--
+-- THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+-- OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+-- MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF
+-- THIRD PARTY RIGHTS. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR HOLDERS
+-- INCLUDED IN THIS NOTICE BE LIABLE FOR ANY CLAIM, OR ANY SPECIAL INDIRECT
+-- OR CONSEQUENTIAL DAMAGES, OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS
+-- OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR
+-- OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
+-- PERFORMANCE OF THIS SOFTWARE.
+

stepmania/Themes/pump/metrics.ini

@@ -21,9 +21,8 @@ RequireStepOnHoldHeads=false
 CheckpointsUseTimeSignatures=true
 ImmediateHoldLetGo=false
 RollBodyIncrementsCombo=false
-InitialHoldLife=1
+InitialHoldLife=0.05
 CheckpointsTapsSeparateJudgment=false
-ImmediateCheckpointMiss=true
 
 [ScreenSelectMusic]
 WrapChangeSteps=true

stepmania/src/Player.cpp

@@ -135,7 +135,6 @@ ThemeMetric<bool> IMMEDIATE_HOLD_LET_GO	( "Player", "ImmediateHoldLetGo" );
 ThemeMetric<bool> REQUIRE_STEP_ON_HOLD_HEADS	( "Player", "RequireStepOnHoldHeads" );
 ThemeMetric<bool> ROLL_BODY_INCREMENTS_COMBO	( "Player", "RollBodyIncrementsCombo" );
 ThemeMetric<bool> CHECKPOINTS_TAPS_SEPARATE_JUDGMENT	( "Player", "CheckpointsTapsSeparateJudgment" );
-ThemeMetric<bool> IMMEDIATE_CHECKPOINT_MISS	( "Player", "ImmediateCheckpointMiss" );
 
 
 float Player::GetWindowSeconds( TimingWindow tw )
@@ -2612,8 +2611,7 @@ void Player::CrossedRows( int iLastRowCrossed, const RageTimer &now )
 					continue;
 
 				viColsWithHold.push_back( iTrack );
-				if( ( IMMEDIATE_CHECKPOINT_MISS && tn.HoldResult.bHeld ) || 
-				   ( !IMMEDIATE_CHECKPOINT_MISS && tn.HoldResult.fLife > 0 ) )
+				if( tn.HoldResult.fLife > 0 )
 				{
 					++iNumHoldsHeldThisRow;
 					++tn.HoldResult.iCheckpointsHit;