From 52caedc1f1fed8507c6e986f02d6a3e771537347 Mon Sep 17 00:00:00 2001
From: Renzix <31043283+Renzix@users.noreply.github.com>
Date: Tue, 29 Mar 2022 20:35:51 -0400
Subject: [PATCH] feat: delete key on st and fix: delete key crash on xterm
 (#131)

* fix: delete key on st

* fix: delete key crash on xterm

Co-authored-by: Renzix <DanielDeBruno@renzix.com>
---
 readline/codes.go    | 1 +
 readline/readline.go | 7 +++++--
 2 files changed, 6 insertions(+), 2 deletions(-)

diff --git a/readline/codes.go b/readline/codes.go
index 680aa79..6ec0a99 100644
--- a/readline/codes.go
+++ b/readline/codes.go
@@ -48,6 +48,7 @@ var (
 	seqEnd       = string([]byte{27, 91, 70})
 	seqEndSc     = string([]byte{27, 91, 52, 126})
 	seqDelete    = string([]byte{27, 91, 51, 126})
+	seqDelete2   = string([]byte{27, 91, 80})
 	seqShiftTab  = string([]byte{27, 91, 90})
 	seqAltQuote  = string([]byte{27, 34})  // Added for showing registers ^["
 	seqAltR      = string([]byte{27, 114}) // Used for alternative history
diff --git a/readline/readline.go b/readline/readline.go
index aa752b5..651a4ca 100644
--- a/readline/readline.go
+++ b/readline/readline.go
@@ -712,12 +712,15 @@ func (rl *Instance) escapeSeq(r []rune) {
 		rl.updateHelpers()
 		return
 
-	case seqDelete:
+	case seqDelete,seqDelete2:
 		if rl.modeTabFind {
 			rl.backspaceTabFind()
 		} else {
-			rl.deleteBackspace(true)
+			if (rl.pos < len(rl.line)) {
+				rl.deleteBackspace(true)
+			}
 		}
+
 	case seqHome, seqHomeSc:
 		if rl.modeTabCompletion {
 			return