From db06ae17d341503687ca5bdebcf0e8d6d90a9c86 Mon Sep 17 00:00:00 2001
From: Raphael 'kena' Poss <knz@thaumogen.net>
Date: Tue, 24 Jan 2023 19:37:11 +0100
Subject: [PATCH] fix(textarea): support pastes that end with a newline
 character

My previous fix did not properly handle a multi-rune input that *ends*
with a newline character. In that case, the final newline was removed.

I found this using the test suite I built for textarea in bubbline at
https://github.com/knz/bubbline/tree/main/editline/internal/textarea/testdata.
---
 textarea/textarea.go | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/textarea/textarea.go b/textarea/textarea.go
index fb86f08..c2419c8 100644
--- a/textarea/textarea.go
+++ b/textarea/textarea.go
@@ -325,7 +325,7 @@ func (m *Model) insertRunesFromUserInput(runes []rune) {
 			lstart = i + 1
 		}
 	}
-	if lstart < len(runes) {
+	if lstart <= len(runes) {
 		// The last line did not end with a newline character.
 		// Take it now.
 		lines = append(lines, runes[lstart:])