fix command suggestions breaking if specifying a parameter

crates/command_parser/tests/ranking.rs

@@ -0,0 +1,57 @@
+use command_parser::{parse_command, Tree, command::Command, parameter::*, tokens};
+
+#[test]
+fn test_typoed_command_with_parameter() {
+    let message_token = ("message", ["msg", "messageinfo"]);
+    let author_token = ("author", ["sender", "a"]);
+    
+    // message <optional msg ref> author
+    let cmd = Command::new(
+        tokens!(message_token, Optional(MESSAGE_REF), author_token),
+        "message_author"
+    ).help("Shows the author of a proxied message");
+    
+    let mut tree = Tree::default();
+    tree.register_command(cmd);
+    
+    let input = "message 1 auth";
+    let result = parse_command(tree, "pk;".to_string(), input.to_string());
+    
+    match result {
+        Ok(_) => panic!("Should have failed to parse"),
+        Err(msg) => {
+            println!("Error: {}", msg);
+            assert!(msg.contains("Perhaps you meant one of the following commands"));
+            assert!(msg.contains("message <target message link/id> author"));
+        }
+    }
+}
+
+#[test]
+fn test_typoed_command_with_flags() {
+    let message_token = ("message", ["msg", "messageinfo"]);
+    let author_token = ("author", ["sender", "a"]);
+    
+    let cmd = Command::new(
+        tokens!(message_token, author_token),
+        "message_author"
+    )
+    .flag(("flag", ["f"]))
+    .flag(("flag2", ["f2"]))
+    .help("Shows the author of a proxied message");
+    
+    let mut tree = Tree::default();
+    tree.register_command(cmd);
+    
+    let input = "message auth -f -flag2";
+    let result = parse_command(tree, "pk;".to_string(), input.to_string());
+    
+    match result {
+        Ok(_) => panic!("Should have failed to parse"),
+        Err(msg) => {
+            println!("Error: {}", msg);
+            assert!(msg.contains("Perhaps you meant one of the following commands"));
+            assert!(msg.contains("message author"));
+        }
+    }
+}