Revert "Span ID Refactor (Step 2): Make Call SpanId-friendly (#13268)" (#13292)

This reverts commit 0cfd5fbece.

The original PR messed up syntax higlighting of aliases and causes
panics of completion in the presence of alias.

<!--
if this PR closes one or more issues, you can automatically link the PR
with
them by using one of the [*linking
keywords*](https://docs.github.com/en/issues/tracking-your-work-with-issues/linking-a-pull-request-to-an-issue#linking-a-pull-request-to-an-issue-using-a-keyword),
e.g.
- this PR should close #xxxx
- fixes #xxxx

you can also mention related issues, PRs or discussions!
-->

# Description
<!--
Thank you for improving Nushell. Please, check our [contributing
guide](../CONTRIBUTING.md) and talk to the core team before making major
changes.

Description of your pull request goes here. **Provide examples and/or
screenshots** if your changes affect the user experience.
-->

# User-Facing Changes
<!-- List of all changes that impact the user experience here. This
helps us keep track of breaking changes. -->

# Tests + Formatting
<!--
Don't forget to add tests that cover your changes.

Make sure you've run and fixed any issues with these commands:

- `cargo fmt --all -- --check` to check standard code formatting (`cargo
fmt --all` applies these changes)
- `cargo clippy --workspace -- -D warnings -D clippy::unwrap_used` to
check that you're using the standard code style
- `cargo test --workspace` to check that all tests pass (on Windows make
sure to [enable developer
mode](https://learn.microsoft.com/en-us/windows/apps/get-started/developer-mode-features-and-debugging))
- `cargo run -- -c "use toolkit.nu; toolkit test stdlib"` to run the
tests for the standard library

> **Note**
> from `nushell` you can also use the `toolkit` as follows
> ```bash
> use toolkit.nu # or use an `env_change` hook to activate it
automatically
> toolkit check pr
> ```
-->

# After Submitting
<!-- If your PR had any user-facing changes, update [the
documentation](https://github.com/nushell/nushell.github.io) after the
PR is merged, if necessary. This will help us keep the docs up to date.
-->

crates/nu-engine/src/call_ext.rs

@@ -113,7 +113,7 @@ impl CallExt for Call {
         let stack = &mut stack.use_call_arg_out_dest();
         let mut output = vec![];
 
-        for result in self.rest_iter_flattened(&engine_state, starting_pos, |expr| {
+        for result in self.rest_iter_flattened(starting_pos, |expr| {
             eval_expression::<WithoutDebug>(engine_state, stack, expr)
         })? {
             output.push(FromValue::from_value(result)?);

crates/nu-engine/src/documentation.rs

@@ -48,7 +48,7 @@ fn nu_highlight_string(code_string: &str, engine_state: &EngineState, stack: &mu
         if let Ok(output) = decl.run(
             engine_state,
             stack,
-            &Call::new(Span::unknown(), Span::unknown()),
+            &Call::new(Span::unknown()),
             Value::string(code_string, Span::unknown()).into_pipeline_data(),
         ) {
             let result = output.into_value(Span::unknown());
@@ -241,10 +241,7 @@ fn get_documentation(
                 &Call {
                     decl_id,
                     head: span,
-                    arguments: Spanned {
-                        item: vec![],
-                        span: span.past(),
-                    },
+                    arguments: vec![],
                     parser_info: HashMap::new(),
                 },
                 PipelineData::Value(Value::list(vals, span), None),
@@ -276,7 +273,7 @@ fn get_documentation(
             match decl.run(
                 engine_state,
                 stack,
-                &Call::new(Span::unknown(), Span::unknown()),
+                &Call::new(Span::unknown()),
                 Value::string(example.example, Span::unknown()).into_pipeline_data(),
             ) {
                 Ok(output) => {
@@ -299,7 +296,7 @@ fn get_documentation(
         }
 
         if let Some(result) = &example.result {
-            let mut table_call = Call::new(Span::unknown(), Span::unknown());
+            let mut table_call = Call::new(Span::unknown());
             if example.example.ends_with("--collapse") {
                 // collapse the result
                 table_call.add_named((
@@ -309,7 +306,6 @@ fn get_documentation(
                     },
                     None,
                     None,
-                    UNKNOWN_SPAN_ID,
                 ))
             } else {
                 // expand the result
@@ -320,7 +316,6 @@ fn get_documentation(
                     },
                     None,
                     None,
-                    UNKNOWN_SPAN_ID,
                 ))
             }
             let table = engine_state
@@ -373,17 +368,13 @@ fn get_ansi_color_for_component_or_default(
         // Call ansi command using argument
         if let Some(argument) = argument_opt {
             if let Some(decl_id) = engine_state.find_decl(b"ansi", &[]) {
-                let arg_span = argument.span(&engine_state);
                 if let Ok(result) = eval_call::<WithoutDebug>(
                     engine_state,
                     caller_stack,
                     &Call {
                         decl_id,
                         head: span,
-                        arguments: Spanned {
-                            item: vec![argument],
-                            span: arg_span,
-                        },
+                        arguments: vec![argument],
                         parser_info: HashMap::new(),
                     },
                     PipelineData::Empty,

crates/nu-engine/src/eval.rs

@@ -26,7 +26,7 @@ pub fn eval_call<D: DebugContext>(
     }
     let decl = engine_state.get_decl(call.decl_id);
 
-    if !decl.is_known_external() && call.named_iter().any(|(flag, _, _, _)| flag.item == "help") {
+    if !decl.is_known_external() && call.named_iter().any(|(flag, _, _)| flag.item == "help") {
         let help = get_full_help(decl, engine_state, caller_stack);
         Ok(Value::string(help, call.head).into_pipeline_data())
     } else if let Some(block_id) = decl.block_id() {
@@ -100,7 +100,6 @@ pub fn eval_call<D: DebugContext>(
             let mut rest_items = vec![];
 
             for result in call.rest_iter_flattened(
-                &engine_state,
                 decl.signature().required_positional.len()
                     + decl.signature().optional_positional.len(),
                 |expr| eval_expression::<D>(engine_state, caller_stack, expr),
@@ -214,16 +213,8 @@ fn eval_external(
         })?;
 
     let command = engine_state.get_decl(decl_id);
-    let spans: Vec<Span> = args
-        .iter()
-        .map(|arg| match arg {
-            ExternalArgument::Regular(expr) | ExternalArgument::Spread(expr) => {
-                expr.span(&engine_state)
-            }
-        })
-        .collect();
 
-    let mut call = Call::new(head.span(&engine_state), Span::concat(&spans));
+    let mut call = Call::new(head.span(&engine_state));
 
     call.add_positional(head.clone());