From de23b633c023aa879a856ab9edbcaced5d8742dd Mon Sep 17 00:00:00 2001
From: Thomas Braun <thomas.braun@byte-physics.de>
Date: Fri, 29 Sep 2023 19:20:17 +0200
Subject: [PATCH] WB_FormulaSwitchToStimset: Avoid endless loop

When we don't have any stimsets the for-loop would never finish.
---
 Packages/MIES/MIES_WaveBuilder.ipf | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/Packages/MIES/MIES_WaveBuilder.ipf b/Packages/MIES/MIES_WaveBuilder.ipf
index 90988bb103..5737633aba 100644
--- a/Packages/MIES/MIES_WaveBuilder.ipf
+++ b/Packages/MIES/MIES_WaveBuilder.ipf
@@ -2113,7 +2113,7 @@ Function WB_FormulaSwitchToStimset(variable channelType, string formula, STRUCT
 	// iterate the stimset list from bottom to top, so that we replace first the shorthands
 	// with numeric prefix and only later on the ones without
 	numSets = DimSize(epochCombineList, ROWS)
-	for(i = numSets - 1; i >= 0; i -= 1)
+	for(i = numSets - 1; i >= 0 && numSets > 0; i -= 1)
 		shorthand   = epochCombineList[i][%Shorthand]
 		stimset     = epochCombineList[i][%stimset]
 		stimsetSpec = LowerStr(stimset) + "?"