Merge pull request #4390 from sergejp/master

docs: Provide a better example for positional arg append

examples/tutorial_builder/03_03_positional_mult.md

@@ -12,9 +12,12 @@ Options:
   -V, --version  Print version information
 
 $ 03_03_positional_mult
-name: None
+names: []
 
 $ 03_03_positional_mult bob
-name: Some("bob")
+names: ["bob"]
+
+$ 03_03_positional_mult bob john
+names: ["bob", "john"]
 
 ```

examples/tutorial_builder/03_03_positional_mult.rs

@@ -5,5 +5,11 @@ fn main() {
         .arg(Arg::new("name").action(ArgAction::Append))
         .get_matches();
 
-    println!("name: {:?}", matches.get_one::<String>("name"));
+    let args = matches
+        .get_many::<String>("name")
+        .unwrap_or_default()
+        .map(|v| v.as_str())
+        .collect::<Vec<_>>();
+
+    println!("names: {:?}", &args);
 }

examples/tutorial_derive/03_03_positional_mult.md

@@ -17,4 +17,7 @@ name: []
 $ 03_03_positional_mult_derive bob
 name: ["bob"]
 
+$ 03_03_positional_mult_derive bob john
+name: ["bob", "john"]
+
 ```