1 files changed, 23 insertions, 0 deletions
diff --git a/third_party/rust/clap/examples/cargo-example.rs b/third_party/rust/clap/examples/cargo-example.rs
new file mode 100644
index 0000000000..149bf59918
--- /dev/null
+++ b/third_party/rust/clap/examples/cargo-example.rs
@@ -0,0 +1,23 @@
+// Note: this requires the `cargo` feature
+
+fn main() {
+    let cmd = clap::Command::new("cargo")
+        .bin_name("cargo")
+        .subcommand_required(true)
+        .subcommand(
+            clap::command!("example").arg(
+                clap::arg!(--"manifest-path" <PATH>)
+                    .required(false)
+                    .allow_invalid_utf8(true),
+            ),
+        );
+    let matches = cmd.get_matches();
+    let matches = match matches.subcommand() {
+        Some(("example", matches)) => matches,
+        _ => unreachable!("clap should ensure we don't get here"),
+    };
+    let manifest_path = matches
+        .value_of_os("manifest-path")
+        .map(std::path::PathBuf::from);
+    println!("{:?}", manifest_path);
+}