From 7185d273d6e5ecd12c5b08aa1ac5831fb6ded6ea Mon Sep 17 00:00:00 2001
From: Peter Chapman <peter@conglomo.co.nz>
Date: Mon, 7 Sep 2026 15:02:46 +1200
Subject: [PATCH] Fix bug with marker location prediction

---
 src/SIL.Machine/Corpora/PlaceMarkersUsfmUpdateBlockHandler.cs | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/SIL.Machine/Corpora/PlaceMarkersUsfmUpdateBlockHandler.cs b/src/SIL.Machine/Corpora/PlaceMarkersUsfmUpdateBlockHandler.cs
index f6f272a84..83682c4fa 100644
--- a/src/SIL.Machine/Corpora/PlaceMarkersUsfmUpdateBlockHandler.cs
+++ b/src/SIL.Machine/Corpora/PlaceMarkersUsfmUpdateBlockHandler.cs
@@ -364,7 +364,7 @@ int NumAlignCrossings(int sourceIndex, int targetIndex)
 
             int[] hypotheses = new int[] { 0, 1, 2 };
             int bestHypothesis = -1;
-            int bestNumCrossings = 200 ^ 2;
+            int bestNumCrossings = 40_000; // A large number
             var checkedHypotheses = new HashSet<int>();
             foreach (int hypothesis in hypotheses)
             {
@@ -380,7 +380,7 @@ int NumAlignCrossings(int sourceIndex, int targetIndex)
                     {
                         // If aligning with a source token that precedes the marker,
                         // the target token predicted to be closest to the marker is the last aligned token rather than the first
-                        targetHypothesis = alignedTargetTokens[hypothesis < 0 ? -1 : 0];
+                        targetHypothesis = alignedTargetTokens[hypothesis < 0 ? alignedTargetTokens.Count - 1 : 0];
                     }
                     else
                     {