Revert to original cargo usage

Re-add TeeReader comment
Remove debugging line

src/commands/mod.rs

@@ -1,7 +1,16 @@
-use clap::{ValueEnum, Parser, AppSettings};
+use clap::{AppSettings, Parser, ValueEnum};
 use std::fmt::{Display, Formatter};
 
 #[derive(Parser)]
+#[clap(name = "cargo")]
+#[clap(bin_name = "cargo")]
+pub enum Cargo {
+    #[clap(name = "3ds")]
+    Input(Input),
+}
+
+#[derive(clap::Args)]
+#[clap(about)]
 #[clap(global_setting(AppSettings::AllowLeadingHyphen))]
 pub struct Input {
     #[clap(value_enum)]

src/lib.rs

@@ -29,6 +29,9 @@ pub fn build_elf(
         stdout_reader = BufReader::new(command_stdout);
         &mut stdout_reader
     } else {
+        // The user presumably cares about the message format, so we should
+        // copy stuff to stdout like they expect. We can still extract the executable
+        // information out of it that we need for 3dsxtool etc.
         tee_reader = BufReader::new(TeeReader::new(command_stdout, io::stdout()));
         &mut tee_reader
     };
@@ -59,8 +62,6 @@ fn make_cargo_build_command(
         command.arg("-Z").arg("build-std");
     }
 
-    println!("{:?}", args);
-
     command
         .env("RUSTFLAGS", rust_flags)
         .arg(&cmd.to_string())

src/main.rs

@@ -1,12 +1,12 @@
-use cargo_3ds::commands::{CargoCommand, Input};
+use cargo_3ds::commands::{Cargo, CargoCommand};
 use cargo_3ds::{build_3dsx, build_elf, build_smdh, check_rust_version, get_metadata, link};
-use clap::{Parser};
+use clap::Parser;
 use std::process;
 
 fn main() {
     check_rust_version();
 
-    let mut input: Input = Input::parse();
+    let Cargo::Input(mut input) = Cargo::parse();
 
     let should_link = input.cmd == CargoCommand::Build
         || (input.cmd == CargoCommand::Test
@@ -17,16 +17,16 @@ fn main() {
                 true
             });
 
-    let message_format = if let Some(pos) = input.cargo_opts
+    let message_format = if let Some(pos) = input
+        .cargo_opts
         .iter()
         .position(|s| s.starts_with("--message-format"))
     {
         let arg = input.cargo_opts.remove(pos);
-        let format = if let Some((_, format)) = arg.split_once('=')
-        {
+        let format = if let Some((_, format)) = arg.split_once('=') {
             format.to_string()
         } else {
-            input.cargo_opts.remove(pos).to_string()
+            input.cargo_opts.remove(pos)
         };
         if !format.starts_with("json") {
             eprintln!("error: non-JSON `message-format` is not supported");