improve table for lists

crates/nu-command/src/table.rs

@@ -66,26 +66,30 @@ fn convert_to_table(iter: impl IntoIterator<Item = Value>) -> Option<nu_table::T
 
     if let Some(first) = iter.peek() {
         let mut headers = first.columns();
-        headers.insert(0, "#".into());
+        if !headers.is_empty() {
+            headers.insert(0, "#".into());
+        }
 
         let mut data = vec![];
 
         for (row_num, item) in iter.enumerate() {
             let mut row = vec![row_num.to_string()];
 
-            for header in headers.iter().skip(1) {
+            if headers.is_empty() {
-                let result = if header == "<value>" {
+                row.push(item.into_string())
-                    Ok(item.clone())
+            } else {
-                } else {
+                for header in headers.iter().skip(1) {
-                    item.clone().follow_cell_path(&[PathMember::String {
+                    let result = {
-                        val: header.into(),
+                        item.clone().follow_cell_path(&[PathMember::String {
-                        span: Span::unknown(),
+                            val: header.into(),
-                    }])
+                            span: Span::unknown(),
-                };
+                        }])
+                    };
 
-                match result {
+                    match result {
-                    Ok(value) => row.push(value.into_string()),
+                        Ok(value) => row.push(value.into_string()),
-                    Err(_) => row.push(String::new()),
+                        Err(_) => row.push(String::new()),
+                    }
                 }
             }
 

crates/nu-protocol/src/value/mod.rs

@@ -290,7 +290,7 @@ impl Value {
     pub fn columns(&self) -> Vec<String> {
         match self {
             Value::Record { cols, .. } => cols.clone(),
-            _ => vec!["<value>".into()],
+            _ => vec![],
         }
     }
 }