Properly redirect invocations (#2070)

* Properly redirect invocations

* Don't convert with-env yet, as there's a random test failure

crates/nu-cli/src/commands/do_.rs

@@ -61,16 +61,18 @@ async fn do_(
     registry: &CommandRegistry,
 ) -> Result<OutputStream, ShellError> {
     let registry = registry.clone();
+    let is_last = raw_args.call_info.args.is_last;
 
     let mut context = Context::from_raw(&raw_args, &registry);
     let scope = raw_args.call_info.scope.clone();
     let (
         DoArgs {
             ignore_errors,
-            block,
+            mut block,
         },
         input,
     ) = raw_args.process(&registry).await?;
+    block.set_is_last(!is_last);
 
     let result = run_block(
         &block,

crates/nu-cli/src/commands/run_alias.rs

@@ -40,7 +40,9 @@ impl WholeStreamCommand for AliasCommand {
     ) -> Result<OutputStream, ShellError> {
         let call_info = args.call_info.clone();
         let registry = registry.clone();
-        let block = self.block.clone();
+        let mut block = self.block.clone();
+        block.set_is_last(!call_info.args.is_last);
+
         let alias_command = self.clone();
         let mut context = Context::from_args(&args, &registry);
         let input = args.input;

crates/nu-cli/src/evaluate/evaluator.rs

@@ -196,6 +196,9 @@ async fn evaluate_invocation(
 
     let input = InputStream::empty();
 
+    let mut block = block.clone();
+    block.set_is_last(true);
+
     let result = run_block(&block, &mut context, input, it, vars, env).await?;
 
     let output = result.into_vec().await;