Merge pull request #5093 from sylvestre/fix-man-coreutils

Improve the coreutils manpage

build.rs

@@ -38,14 +38,14 @@ pub fn main() {
     let mut mf = File::create(Path::new(&out_dir).join("uutils_map.rs")).unwrap();
 
     mf.write_all(
-        "type UtilityMap<T> = phf::Map<&'static str, (fn(T) -> i32, fn() -> Command)>;\n\
+        "type UtilityMap<T> = phf::OrderedMap<&'static str, (fn(T) -> i32, fn() -> Command)>;\n\
          \n\
          fn util_map<T: uucore::Args>() -> UtilityMap<T> {\n"
             .as_bytes(),
     )
     .unwrap();
 
-    let mut phf_map = phf_codegen::Map::<&str>::new();
+    let mut phf_map = phf_codegen::OrderedMap::<&str>::new();
     for krate in &crates {
         let map_value = format!("({krate}::uumain, {krate}::uu_app)");
         match krate.as_ref() {

src/bin/coreutils.rs

@@ -212,8 +212,15 @@ fn gen_manpage<T: uucore::Args>(
 
 fn gen_coreutils_app<T: uucore::Args>(util_map: &UtilityMap<T>) -> Command {
     let mut command = Command::new("coreutils");
-    for (_, (_, sub_app)) in util_map {
-        command = command.subcommand(sub_app());
+    for (name, (_, sub_app)) in util_map {
+        // Recreate a small subcommand with only the relevant info
+        // (name & short description)
+        let about = sub_app()
+            .get_about()
+            .expect("Could not get the 'about'")
+            .to_string();
+        let sub_app = Command::new(name).about(about);
+        command = command.subcommand(sub_app);
     }
     command
 }