Fix clearing the terminal

src/app_state.rs

@@ -1,9 +1,5 @@
 use anyhow::{bail, Context, Result};
-use crossterm::{
+use crossterm::style::Stylize;
-    style::Stylize,
-    terminal::{Clear, ClearType},
-    ExecutableCommand,
-};
 use serde::Deserialize;
 use std::{
     fs::{self, File},
@@ -13,6 +9,7 @@ use std::{
 };
 
 use crate::{
+    clear_terminal,
     embedded::EMBEDDED_FILES,
     exercise::{Exercise, OUTPUT_CAPACITY},
     info_file::ExerciseInfo,
@@ -387,7 +384,7 @@ impl AppState {
             writeln!(writer, "{}", "ok".green())?;
         }
 
-        writer.execute(Clear(ClearType::All))?;
+        clear_terminal(writer)?;
         writer.write_all(FENISH_LINE.as_bytes())?;
 
         let final_message = self.final_message.trim();

src/main.rs

@@ -1,12 +1,8 @@
 use anyhow::{bail, Context, Result};
 use app_state::StateFileStatus;
 use clap::{Parser, Subcommand};
-use crossterm::{
-    terminal::{Clear, ClearType},
-    ExecutableCommand,
-};
 use std::{
-    io::{self, BufRead, Write},
+    io::{self, BufRead, StdoutLock, Write},
     path::Path,
     process::exit,
 };
@@ -45,6 +41,10 @@ fn in_official_repo() -> bool {
     Path::new("dev/rustlings-repo.txt").exists()
 }
 
+fn clear_terminal(stdout: &mut StdoutLock) -> io::Result<()> {
+    stdout.write_all(b"\x1b[H\x1b[2J\x1b[3J")
+}
+
 /// Rustlings is a collection of small exercises to get you used to writing and reading Rust code
 #[derive(Parser)]
 #[command(version)]
@@ -129,7 +129,7 @@ fn main() -> Result<()> {
         match state_file_status {
             StateFileStatus::NotRead => {
                 let mut stdout = io::stdout().lock();
-                stdout.execute(Clear(ClearType::All))?;
+                clear_terminal(&mut stdout)?;
 
                 let welcome_message = welcome_message.trim();
                 write!(stdout, "{welcome_message}\n\nPress ENTER to continue ")?;
@@ -137,7 +137,7 @@ fn main() -> Result<()> {
 
                 io::stdin().lock().read_until(b'\n', &mut Vec::new())?;
 
-                stdout.execute(Clear(ClearType::All))?;
+                clear_terminal(&mut stdout)?;
             }
             StateFileStatus::Read => (),
         }

src/watch/state.rs

@@ -1,13 +1,13 @@
 use anyhow::Result;
 use crossterm::{
     style::{style, Stylize},
-    terminal::{size, Clear, ClearType},
+    terminal::size,
-    ExecutableCommand,
 };
 use std::io::{self, StdoutLock, Write};
 
 use crate::{
     app_state::{AppState, ExercisesProgress},
+    clear_terminal,
     exercise::OUTPUT_CAPACITY,
     progress_bar::progress_bar,
     terminal_link::TerminalFileLink,
@@ -111,7 +111,7 @@ impl<'a> WatchState<'a> {
         // Prevent having the first line shifted.
         self.writer.write_all(b"\n")?;
 
-        self.writer.execute(Clear(ClearType::All))?;
+        clear_terminal(&mut self.writer)?;
 
         self.writer.write_all(&self.output)?;
         self.writer.write_all(b"\n")?;