Fix command_type classification (#7074)

- Custom commands are true for builtin and custom
- Add classification as external command
- Specify wildcard in keyword: keyword is true for builtin and keyword

crates/nu-command/src/core_commands/let_.rs

@@ -99,6 +99,8 @@ impl Command for Let {
 
 #[cfg(test)]
 mod test {
+    use nu_protocol::engine::CommandType;
+
     use super::*;
 
     #[test]
@@ -107,4 +109,9 @@ mod test {
 
         test_examples(Let {})
     }
+
+    #[test]
+    fn test_command_type() {
+        assert!(matches!(Let.command_type(), CommandType::Keyword));
+    }
 }

crates/nu-command/src/filters/sort.rs

@@ -292,6 +292,9 @@ pub fn process(
 
 #[cfg(test)]
 mod test {
+
+    use nu_protocol::engine::CommandType;
+
     use super::*;
 
     #[test]
@@ -300,4 +303,9 @@ mod test {
 
         test_examples(Sort {})
     }
+
+    #[test]
+    fn test_command_type() {
+        assert!(matches!(Sort.command_type(), CommandType::Builtin));
+    }
 }