Don't write a custom help -- use clap's sane defaults.

Author: RobbieMcKinstry

src/bin/main.rs

@@ -7,36 +7,12 @@ async fn main() -> miette::Result<()> {
     dispatch_command(cli).await
 }
 
-/// Prints abbreviated help showing only core commands.
-///
-/// When the user runs `tern` without arguments, we show a shorter help
-/// that highlights the most commonly used commands. The full command list
-/// is available via `tern --help`.
-fn print_short_help() -> miette::Result<()> {
-    let cmd = Cli::command();
-    let version = cmd.get_version().unwrap_or("unknown");
-
-    println!("tern {version}");
-    println!("A database migration tool written in Rust");
-    println!();
-    println!("Usage: tern [OPTIONS] <COMMAND>");
-    println!();
-    println!("Commands:");
-    println!("  version  Print the CLI version and exit");
-    println!("  init     Initialize a new Tern project with state backend");
-    println!("  status   Show state backend status");
-    println!("  help     Print this message or the help of the given subcommand(s)");
-    println!();
-    println!("Options:");
-    println!("  -h, --help     Print help (use 'tern --help' for all commands)");
-    println!("  -V, --version  Print version");
-
-    Ok(())
-}
-
 async fn dispatch_command(cli: Cli) -> miette::Result<()> {
-    match &cli.cmd {
-        None => print_short_help(),
-        Some(cmd) => cmd.clone().dispatch().await,
+    match cli.cmd {
+        None => {
+            Cli::command().print_help().ok();
+            Ok(())
+        }
+        Some(cmd) => cmd.dispatch().await,
     }
 }