Show submodule recipes in --choose (#2069)

src/namepath.rs

@@ -9,20 +9,23 @@ impl<'src> Namepath<'src> {
   }
 }
 
-impl<'str> Serialize for Namepath<'str> {
+impl<'src> Display for Namepath<'src> {
+  fn fmt(&self, f: &mut Formatter) -> fmt::Result {
+    for (i, name) in self.0.iter().enumerate() {
+      if i > 0 {
+        write!(f, "::")?;
+      }
+      write!(f, "{name}")?;
+    }
+    Ok(())
+  }
+}
+
+impl<'src> Serialize for Namepath<'src> {
   fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
   where
     S: Serializer,
   {
-    let mut path = String::new();
-
-    for (i, name) in self.0.iter().enumerate() {
-      if i > 0 {
-        path.push_str("::");
-      }
-      path.push_str(name.lexeme());
-    }
-
-    serializer.serialize_str(&path)
+    serializer.serialize_str(&format!("{self}"))
   }
 }

src/subcommand.rs

@@ -209,12 +209,17 @@ impl Subcommand {
     overrides: &BTreeMap<String, String>,
     chooser: Option<&str>,
   ) -> Result<(), Error<'src>> {
-    let recipes = justfile
+    let mut recipes = Vec::<&Recipe<Dependency>>::new();
+    let mut stack = vec![justfile];
+    while let Some(module) = stack.pop() {
+      recipes.extend(
+        module
           .public_recipes(config.unsorted)
           .iter()
-      .filter(|recipe| recipe.min_arguments() == 0)
-      .copied()
-      .collect::<Vec<&Recipe<Dependency>>>();
+          .filter(|recipe| recipe.min_arguments() == 0),
+      );
+      stack.extend(module.modules.values());
+    }
 
     if recipes.is_empty() {
       return Err(Error::NoChoosableRecipes);
@@ -249,7 +254,7 @@ impl Subcommand {
         .stdin
         .as_mut()
         .expect("Child was created with piped stdio")
-        .write_all(format!("{}\n", recipe.name).as_bytes())
+        .write_all(format!("{}\n", recipe.namepath).as_bytes())
       {
         return Err(Error::ChooserWrite { io_error, chooser });
       }

tests/choose.rs

@@ -80,6 +80,23 @@ fn skip_private_recipes() {
     .run();
 }
 
+#[test]
+fn recipes_in_submodules_can_be_chosen() {
+  Test::new()
+    .args(["--unstable", "--choose"])
+    .env("JUST_CHOOSER", "head -n10")
+    .write("bar.just", "baz:\n echo BAZ")
+    .test_round_trip(false)
+    .justfile(
+      "
+        mod bar
+      ",
+    )
+    .stderr("echo BAZ\n")
+    .stdout("BAZ\n")
+    .run();
+}
+
 #[test]
 fn skip_recipes_that_require_arguments() {
   Test::new()