From eb55841447a38b7e875720e0f283f5c4340cf91d Mon Sep 17 00:00:00 2001
From: Mikhail Pyltsin <Mikhail.Pyltsin@jetbrains.com>
Date: Sat, 14 Jan 2023 21:25:00 +0100
Subject: [PATCH] [java-completion] IDEA-359174 first draft of command
 completion

- fix out of bounds exception

GitOrigin-RevId: 352000f5b9f31c7a04b82e0ff3d88f78305c3179
---
 .../completion/commands/core/CommandCompletionService.kt        | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/java/java-impl/src/com/intellij/codeInsight/completion/commands/core/CommandCompletionService.kt b/java/java-impl/src/com/intellij/codeInsight/completion/commands/core/CommandCompletionService.kt
index 96c91aee92db..9336749bbd4c 100644
--- a/java/java-impl/src/com/intellij/codeInsight/completion/commands/core/CommandCompletionService.kt
+++ b/java/java-impl/src/com/intellij/codeInsight/completion/commands/core/CommandCompletionService.kt
@@ -150,7 +150,7 @@ class CommandCompletionService(
     val newList: MutableList<PreviousActionInfoContainer> = if (index != 0) {
       val previousBeforeDot = data?.firstOrNull()
       val last = data?.firstOrNull()
-      if (previousBeforeDot != null && last != null) {
+      if (previousBeforeDot != null && last != null && offset - index > 0) {
         val newString = editor.document.immutableCharSequence.substring(0, offset - index) + editor.document.immutableCharSequence.substring(offset)
         if (newString.hashCode() == previousBeforeDot.hashcode) {
           mutableListOf(previousBeforeDot)