From 8791ac6e00603e38be83d4fed26fd805fc691f5c Mon Sep 17 00:00:00 2001
From: sspanak <doftor.livain@gmail.com>
Date: Tue, 11 Mar 2025 12:52:48 +0200
Subject: [PATCH] fixed a crash when changing the text case while typing an
 unknown word

---
 .../java/io/github/sspanak/tt9/ui/tray/SuggestionsBar.java   | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/app/src/main/java/io/github/sspanak/tt9/ui/tray/SuggestionsBar.java b/app/src/main/java/io/github/sspanak/tt9/ui/tray/SuggestionsBar.java
index 1b47014c..e2ad0758 100644
--- a/app/src/main/java/io/github/sspanak/tt9/ui/tray/SuggestionsBar.java
+++ b/app/src/main/java/io/github/sspanak/tt9/ui/tray/SuggestionsBar.java
@@ -152,7 +152,10 @@ public class SuggestionsBar {
 		int startIndex = 0;
 		String[] prefixes = {STEM_VARIATION_PREFIX, STEM_PUNCTUATION_VARIATION_PREFIX, Characters.COMBINING_ZERO_BASE};
     for (String prefix : prefixes) {
-			startIndex = Math.max(startIndex, suggestion.indexOf(prefix) + 1);
+			int prefixIndex = suggestion.indexOf(prefix) + 1;
+			if (prefixIndex < endIndex) { // do not match the prefix chars when they are part of STEM_SUFFIX
+				startIndex = Math.max(startIndex, prefixIndex);
+			}
     }
 
 		if (startIndex == 0 && endIndex == suggestion.length()) {