make first behave same way as last: always return list when with number argument (#6616)

* make `first` behave same way as `last` * better behaviour * fix tests * add tests
2022-09-29 06:08:17 +08:00
parent dd578926c3
commit 32fbcf39cc
12 changed files with 44 additions and 16 deletions
--- a/crates/nu-command/src/filters/first.rs
+++ b/crates/nu-command/src/filters/first.rs
@ -146,7 +146,7 @@ fn first_helper(
                }
            }
            _ => {
-                if rows_desired == 1 {
+                if rows_desired == 1 && rows.is_none() {
                    match input_peek.next() {
                        Some(val) => Ok(val.into_pipeline_data()),
                        None => Err(ShellError::AccessBeyondEndOfStream(head)),