From 9802c8e7401cf79843c7ce96e98e794d93a0f497 Mon Sep 17 00:00:00 2001
From: Thomas Forgione <thomas@forgione.fr>
Date: Thu, 26 Oct 2023 11:40:20 +0200
Subject: [PATCH] Fix bad rendering of border

---
 src/tile.rs | 22 ++++++++++++----------
 1 file changed, 12 insertions(+), 10 deletions(-)

diff --git a/src/tile.rs b/src/tile.rs
index 0e2a76b..015327e 100644
--- a/src/tile.rs
+++ b/src/tile.rs
@@ -289,7 +289,7 @@ impl Tile {
         }
 
         // Autoscroll whene content arrives on stdout
-        self.scroll = self.stdout.len() as isize - 1 - (self.inner_size.1 as isize);
+        self.scroll = self.stdout.len() as isize - 2 - (self.inner_size.1 as isize);
         if self.scroll < 0 {
             self.scroll = 0;
         }
@@ -499,15 +499,17 @@ impl Tile {
             }
         }
 
-        let mut spaces = format!(
-            "{}",
-            cursor::Goto(x + max_char_index, y + last_line_index as u16 - scroll)
-        );
+        if last_line_index <= h {
+            let mut spaces = format!(
+                "{}",
+                cursor::Goto(x + max_char_index, y + last_line_index as u16 - scroll)
+            );
 
-        for _ in max_char_index..w {
-            spaces.push(DELETE_CHAR);
+            for _ in max_char_index..w {
+                spaces.push(DELETE_CHAR);
+            }
+            buffer.push(spaces);
         }
-        buffer.push(spaces);
 
         buffer.push(format!("{}", style::Reset));
         buffer.join("")
@@ -522,7 +524,7 @@ impl Tile {
 
     /// Scrolls down one line.
     pub fn scroll_down(&mut self) {
-        if self.scroll + (self.inner_size.1 as isize) < self.stdout.len() as isize - 1 {
+        if self.scroll + (self.inner_size.1 as isize) < self.stdout.len() as isize - 2 {
             self.scroll += 1;
         }
     }
@@ -534,7 +536,7 @@ impl Tile {
 
     /// Scrolls down one line.
     pub fn scroll_full_down(&mut self) {
-        self.scroll = self.stdout.len() as isize - self.inner_size.1 as isize - 1;
+        self.scroll = self.stdout.len() as isize - self.inner_size.1 as isize - 2;
         if self.scroll < 0 {
             self.scroll = 0;
         }