From d540bf6762ff7af9d0d7a40cc9c59505eb5943e0 Mon Sep 17 00:00:00 2001
From: Simon Chaykin <52384223+game-lover@users.noreply.github.com>
Date: Mon, 5 Oct 2020 17:34:22 +0100
Subject: [PATCH] Don't handle backspace, if string is empty

---
 23-fixes/drivers/keyboard.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/23-fixes/drivers/keyboard.c b/23-fixes/drivers/keyboard.c
index d9d1480..71aff44 100644
--- a/23-fixes/drivers/keyboard.c
+++ b/23-fixes/drivers/keyboard.c
@@ -32,6 +32,9 @@ static void keyboard_callback(registers_t *regs) {
     char str[2];
     if (scancode > SC_MAX) return;
     if (scancode == BACKSPACE) {
+        if (strcmp(key_buffer, "") == 0) {
+          return;
+        }
         backspace(key_buffer);
         kprint_backspace();
     } else if (scancode == ENTER) {