hmm how do you debug a shell

Cargo.lock

@@ -8,6 +8,21 @@ version = "1.0.69"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "224afbd727c3d6e4b90103ece64b8d1b67fbb1973b1046c2281eed3f3803f800"
 
+[[package]]
+name = "cfg-if"
+version = "1.0.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "baf1de4339761588bc0619e3cbc0120ee582ebb74b53b4efbf79117bd2da40fd"
+
+[[package]]
+name = "log"
+version = "0.4.17"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "abb12e687cfb44aa40f41fc3978ef76448f9b6038cad6aef4259d3c095a2382e"
+dependencies = [
+ "cfg-if",
+]
+
 [[package]]
 name = "proc-macro2"
 version = "1.0.51"
@@ -68,6 +83,7 @@ name = "wash"
 version = "0.1.0"
 dependencies = [
  "anyhow",
+ "log",
  "thiserror",
  "windows",
 ]

Cargo.toml

@@ -9,6 +9,8 @@ edition = "2021"
 anyhow = "1.0"
 thiserror = "1.0"
 
+log = "0.4"
+
 [dependencies.windows]
 version = "0.44.0"
 features = [

src/log.rs

@@ -0,0 +1,19 @@
+pub use log::{debug, error, info, set_logger, set_max_level, trace, warn, LevelFilter};
+
+use log::{Metadata, Record};
+
+pub struct Log;
+
+impl log::Log for Log {
+    fn enabled(&self, _metadata: &Metadata) -> bool {
+        true
+    }
+
+    fn log(&self, record: &Record) {
+        if self.enabled(record.metadata()) {
+            println!("{} - {}", record.level(), record.args());
+        }
+    }
+
+    fn flush(&self) {}
+}

src/main.rs

@@ -1,11 +1,11 @@
 mod error;
+mod log;
 
-use std::io::{self, Write};
 use windows::Win32::{Foundation::HANDLE, System::Console};
 
 use anyhow::{Context, Result};
 
-use crate::error::Error;
+use crate::{error::Error, log::*};
 
 fn print_input_mode(mode: Console::CONSOLE_MODE) {
     // Characters read by the ReadFile or ReadConsole function are written to the active screen
@@ -197,8 +197,6 @@ fn setup_stdin() -> Result<()> {
     unsafe {
         let handle = stdin_handle()?;
         Error::check(Console::GetConsoleMode(handle, &mut mode))?;
-        println!("Stdin details:");
-        print_input_mode(mode);
 
         // allow terminal input characters
         mode |= Console::ENABLE_VIRTUAL_TERMINAL_INPUT;
@@ -216,6 +214,9 @@ fn setup_stdin() -> Result<()> {
         mode |= Console::ENABLE_MOUSE_INPUT;
 
         Error::check(Console::SetConsoleMode(handle, mode))?;
+        Error::check(Console::GetConsoleMode(handle, &mut mode))?;
+        println!("Stdin details:");
+        print_input_mode(mode);
     }
     Ok(())
 }
@@ -235,6 +236,7 @@ fn setup_stdout() -> Result<()> {
 }
 
 fn main() -> Result<()> {
+    _ = set_logger(&Log {}).map(|()| set_max_level(LevelFilter::Info));
     setup_stdin()?;
     setup_stdout()?;
 
@@ -243,7 +245,7 @@ fn main() -> Result<()> {
     loop {
         let mut n: u32 = 0;
         unsafe {
-            Error::check(Console::ReadConsoleInputA(stdin, &mut buf, &mut n))?;
+            Error::check(Console::ReadConsoleInputW(stdin, &mut buf, &mut n))?;
         }
         let n = n as usize;
         println!("read: {:?}", n);