make main() alone handle process exit status

Author: cosmicexplorer

examples/write_dir.rs

@@ -30,11 +30,7 @@ enum CompressionMethod {
     Zstd,
 }
 
-fn main() {
-    std::process::exit(real_main());
-}
-
-fn real_main() -> i32 {
+fn main() -> ! {
     let args = Args::parse();
     let src_dir = &args.source;
     let dst_file = &args.destination;
@@ -70,11 +66,15 @@ fn real_main() -> i32 {
         },
     };
     match doit(src_dir, dst_file, method) {
-        Ok(_) => println!("done: {src_dir:?} written to {dst_file:?}"),
-        Err(e) => eprintln!("Error: {e:?}"),
+        Ok(_) => {
+            println!("done: {src_dir:?} written to {dst_file:?}");
+            std::process::exit(0);
+        }
+        Err(e) => {
+            eprintln!("Error: {e:?}");
+            std::process::abort();
+        }
     }
-
-    0
 }
 
 fn zip_dir<T>(