From bdd4deff6d4d414169df275f357123189da73040 Mon Sep 17 00:00:00 2001
From: Maksim Kita <kitaetoya@gmail.com>
Date: Wed, 26 Jul 2023 17:16:44 +0300
Subject: [PATCH] Multiline input history previous line crash fix

---
 src/replxx_impl.cxx | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/replxx_impl.cxx b/src/replxx_impl.cxx
index 9633447..4cb561d 100644
--- a/src/replxx_impl.cxx
+++ b/src/replxx_impl.cxx
@@ -1883,7 +1883,7 @@ Replxx::ACTION_RESULT Replxx::ReplxxImpl::line_previous( char32_t ) {
 		}
 		int prevNewlinePosition( prev_newline_position( _pos ) );
 		if ( prevNewlinePosition == _pos ) {
-			prevNewlinePosition = prev_newline_position( _pos - 1 );
+			prevNewlinePosition = _pos > 0 ? prev_newline_position( _pos - 1 ) : -1;
 		}
 		if ( prevNewlinePosition < 0 ) {
 			break;