added missing metadata for drop and uniq #4763 (#4908)

* added missing metadata for drop and uniq #4763

* added missing metadata for keep #4763

* added missing metadata for append #4763

* added missing metadata for shuffle #4763

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

@@ -81,12 +81,14 @@ impl Command for Append {
     ) -> Result<PipelineData, ShellError> {
         let val: Value = call.req(engine_state, stack, 0)?;
         let vec: Vec<Value> = process_value(val);
+        let metadata = input.metadata();
 
         Ok(input
             .into_iter()
             .chain(vec)
             .into_iter()
-            .into_pipeline_data(engine_state.ctrlc.clone()))
+            .into_pipeline_data(engine_state.ctrlc.clone())
+            .set_metadata(metadata))
     }
 }
 

crates/nu-command/src/filters/drop/drop_.rs

@@ -70,6 +70,7 @@ impl Command for Drop {
         call: &Call,
         input: PipelineData,
     ) -> Result<PipelineData, ShellError> {
+        let metadata = input.metadata();
         let rows: Option<i64> = call.opt(engine_state, stack, 0)?;
         let v: Vec<_> = input.into_iter().collect();
         let vlen: i64 = v.len() as i64;
@@ -81,7 +82,9 @@ impl Command for Drop {
         };
 
         if rows_to_drop == 0 {
-            Ok(v.into_iter().into_pipeline_data(engine_state.ctrlc.clone()))
+            Ok(v.into_iter()
+                .into_pipeline_data(engine_state.ctrlc.clone())
+                .set_metadata(metadata))
         } else {
             let k = if vlen < rows_to_drop {
                 0
@@ -90,7 +93,9 @@ impl Command for Drop {
             };
 
             let iter = v.into_iter().take(k as usize);
-            Ok(iter.into_pipeline_data(engine_state.ctrlc.clone()))
+            Ok(iter
+                .into_pipeline_data(engine_state.ctrlc.clone())
+                .set_metadata(metadata))
         }
     }
 }

crates/nu-command/src/filters/keep/keep_.rs

@@ -66,6 +66,7 @@ impl Command for Keep {
         input: PipelineData,
     ) -> Result<PipelineData, ShellError> {
         let n: Option<Value> = call.opt(engine_state, stack, 0)?;
+        let metadata = input.metadata();
 
         let n: usize = match n {
             Some(Value::Int { val, span }) => val.try_into().map_err(|err| {
@@ -83,7 +84,11 @@ impl Command for Keep {
 
         let ctrlc = engine_state.ctrlc.clone();
 
-        Ok(input.into_iter().take(n).into_pipeline_data(ctrlc))
+        Ok(input
+            .into_iter()
+            .take(n)
+            .into_pipeline_data(ctrlc)
+            .set_metadata(metadata))
     }
 }
 

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

@@ -29,10 +29,13 @@ impl Command for Shuffle {
         _call: &Call,
         input: PipelineData,
     ) -> Result<PipelineData, ShellError> {
+        let metadata = input.metadata();
         let mut v: Vec<_> = input.into_iter().collect();
         v.shuffle(&mut thread_rng());
         let iter = v.into_iter();
-        Ok(iter.into_pipeline_data(engine_state.ctrlc.clone()))
+        Ok(iter
+            .into_pipeline_data(engine_state.ctrlc.clone())
+            .set_metadata(metadata))
     }
 
     fn examples(&self) -> Vec<Example> {

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

@@ -117,6 +117,7 @@ fn uniq(
     let show_repeated = call.has_flag("repeated");
     let ignore_case = call.has_flag("ignore-case");
     let only_uniques = call.has_flag("unique");
+    let metadata = input.metadata();
 
     let uniq_values = {
         let counter = &mut Vec::new();
@@ -180,7 +181,7 @@ fn uniq(
     // keeps the original Nushell semantics
     if values_vec_deque.len() == 1 {
         if let Some(x) = values_vec_deque.pop_front() {
-            Ok(x.into_pipeline_data())
+            Ok(x.into_pipeline_data().set_metadata(metadata))
         } else {
             Err(ShellError::NushellFailed("No input given...".to_string()))
         }
@@ -189,7 +190,8 @@ fn uniq(
             vals: values_vec_deque.into_iter().collect(),
             span: head,
         }
-        .into_pipeline_data())
+        .into_pipeline_data()
+        .set_metadata(metadata))
     }
 }