external with redirection

crates/nu-protocol/src/ty.rs

@@ -20,6 +20,7 @@ pub enum Type {
     ValueStream,
     Unknown,
     Error,
+    Binary,
 }
 
 impl Display for Type {
@@ -43,6 +44,7 @@ impl Display for Type {
             Type::ValueStream => write!(f, "value stream"),
             Type::Unknown => write!(f, "unknown"),
             Type::Error => write!(f, "error"),
+            Type::Binary => write!(f, "binary"),
         }
     }
 }

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

@@ -59,6 +59,10 @@ pub enum Value {
     Error {
         error: ShellError,
     },
+    Binary {
+        val: Vec<u8>,
+        span: Span,
+    },
 }
 
 impl Value {
@@ -83,6 +87,7 @@ impl Value {
             Value::Block { span, .. } => *span,
             Value::Stream { span, .. } => *span,
             Value::Nothing { span, .. } => *span,
+            Value::Binary { span, .. } => *span,
         }
     }
 
@@ -100,6 +105,7 @@ impl Value {
             Value::Block { span, .. } => *span = new_span,
             Value::Nothing { span, .. } => *span = new_span,
             Value::Error { .. } => {}
+            Value::Binary { span, .. } => *span = new_span,
         }
 
         self
@@ -121,6 +127,7 @@ impl Value {
             Value::Block { .. } => Type::Block,
             Value::Stream { .. } => Type::ValueStream,
             Value::Error { .. } => Type::Error,
+            Value::Binary { .. } => Type::Binary,
         }
     }
 
@@ -159,6 +166,7 @@ impl Value {
             Value::Block { val, .. } => format!("<Block {}>", val),
             Value::Nothing { .. } => String::new(),
             Value::Error { error } => format!("{:?}", error),
+            Value::Binary { val, .. } => format!("{:?}", val),
         }
     }
 

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

@@ -30,8 +30,7 @@ impl Iterator for ValueStream {
 
     fn next(&mut self) -> Option<Self::Item> {
         {
-            let mut iter = self.0.borrow_mut();
-            iter.next()
+            self.0.borrow_mut().next()
         }
     }
 }