From a1febb52bd2ac5cec0902e2e060c2cafeaf9afa8 Mon Sep 17 00:00:00 2001
From: denis <denismaximov98@gmail.com>
Date: Tue, 5 Jan 2021 11:52:12 +0200
Subject: [PATCH] fix: fixes #130 by adding overflowing_sub

---
 src/terminal_pane/scroll.rs | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/terminal_pane/scroll.rs b/src/terminal_pane/scroll.rs
index 6301c7c1..0c94a0d8 100644
--- a/src/terminal_pane/scroll.rs
+++ b/src/terminal_pane/scroll.rs
@@ -1,4 +1,4 @@
-use std::collections::VecDeque;
+use std::{collections::VecDeque};
 use std::fmt::{self, Debug, Formatter};
 
 use crate::terminal_pane::terminal_character::{
@@ -266,7 +266,7 @@ impl CursorPosition {
         self.column_index += count;
     }
     pub fn move_backwards(&mut self, count: usize) {
-        self.column_index -= count;
+        self.column_index = u32::overflowing_sub(self.column_index as u32, count as u32).0 as usize;
     }
     pub fn move_to_next_linewrap(&mut self) {
         self.line_index.1 += 1;