From 40dddf9324e549e14132b9cd957ed07c7aca5c96 Mon Sep 17 00:00:00 2001
From: "Md. Abdulla-Al-Sun" <sunkuet02@gmail.com>
Date: Sun, 3 Sep 2017 01:53:15 +0600
Subject: [PATCH] LUCENE-7940: added missing boundary case for ba phaala
 normalization

---
 .../java/org/apache/lucene/analysis/bn/BengaliNormalizer.java   | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lucene/analysis/common/src/java/org/apache/lucene/analysis/bn/BengaliNormalizer.java b/lucene/analysis/common/src/java/org/apache/lucene/analysis/bn/BengaliNormalizer.java
index 057fbb5ee85..1718cbce70f 100644
--- a/lucene/analysis/common/src/java/org/apache/lucene/analysis/bn/BengaliNormalizer.java
+++ b/lucene/analysis/common/src/java/org/apache/lucene/analysis/bn/BengaliNormalizer.java
@@ -104,7 +104,7 @@ public class BengaliNormalizer {
             len = delete(s, i, len);
             len = delete(s, i-1, len);
             i -=2;
-          } else {
+          } else if(i - 2 >= 0){
             s[i - 1] = s[i - 2];
             len = delete(s, i, len);
             i --;