From fcb457efffd0798c09454c24a0fa628ba6041589 Mon Sep 17 00:00:00 2001
From: Yash Karandikar <nerdstep710@gmail.com>
Date: Fri, 17 Sep 2021 13:09:20 -0500
Subject: [PATCH] Set move boundary to after the prompt

---
 src/interrupts.rs |  2 +-
 src/shell.rs      | 14 ++++++++------
 src/vga_buffer.rs |  2 +-
 3 files changed, 10 insertions(+), 8 deletions(-)

diff --git a/src/interrupts.rs b/src/interrupts.rs
index e62ec1a..fa5e501 100644
--- a/src/interrupts.rs
+++ b/src/interrupts.rs
@@ -96,7 +96,7 @@ extern "x86-interrupt" fn keyboard_interrupt_handler(_stack_frame: InterruptStac
                             let col = writer.column_position;
                             let row = crate::vga_buffer::BUFFER_HEIGHT - 1;
                             
-                            if col != 0 {
+                            if col != 4 {
                                 crate::vga_buffer::move_cursor((col as u16) - 1, row as u16);
                                 writer.column_position -= 1;
                             }
diff --git a/src/shell.rs b/src/shell.rs
index 001df2f..7db225d 100644
--- a/src/shell.rs
+++ b/src/shell.rs
@@ -2,11 +2,13 @@ use crate::println;
 use crate::print;
 
 pub fn evaluate(command: &str) {
-    let res = command.trim();
-    if res != "" {
-        println!();
-        println!();
-        println!("[ {:#?} ]", res);
-        print!(">>> ");
+    if let Some(stripped) = command.strip_prefix(">>> ") {
+        let res = stripped.trim();
+        if res != "" {
+            println!();
+            println!();
+            println!("[ {} ]", res);
+            print!(">>> ");
+        }
     }
 }
diff --git a/src/vga_buffer.rs b/src/vga_buffer.rs
index ba717ec..064b9b3 100644
--- a/src/vga_buffer.rs
+++ b/src/vga_buffer.rs
@@ -157,7 +157,7 @@ pub fn backspace() {
     let row = BUFFER_HEIGHT - 1;
     let col = writer.column_position;
     let color_code = writer.color_code;
-    if col != 0 {
+    if col != 4 {
         writer.buffer.chars[row][col - 1].write(ScreenChar {
             ascii_character: b' ',
             color_code