diff --git a/benches/benchmarks.rs b/benches/benchmarks.rs
index 859e3e2d2d..e291eeebcc 100644
--- a/benches/benchmarks.rs
+++ b/benches/benchmarks.rs
@@ -23,8 +23,7 @@ fn load_bench_commands() -> EngineState {
 }
 
 fn canonicalize_path(engine_state: &EngineState, path: &Path) -> PathBuf {
-    #[allow(deprecated)]
-    let cwd = engine_state.current_work_dir();
+    let cwd = engine_state.cwd_as_string(None).unwrap();
 
     if path.exists() {
         match nu_path::canonicalize_with(path, cwd) {
diff --git a/crates/nu-cli/src/config_files.rs b/crates/nu-cli/src/config_files.rs
index 775d76382b..091fe7daa3 100644
--- a/crates/nu-cli/src/config_files.rs
+++ b/crates/nu-cli/src/config_files.rs
@@ -177,36 +177,36 @@ pub fn add_plugin_file(
     use std::path::Path;
 
     let working_set = StateWorkingSet::new(engine_state);
-    #[allow(deprecated)]
-    let cwd = working_set.get_cwd();
 
-    if let Some(plugin_file) = plugin_file {
-        let path = Path::new(&plugin_file.item);
-        let path_dir = path.parent().unwrap_or(path);
-        // Just try to canonicalize the directory of the plugin file first.
-        if let Ok(path_dir) = canonicalize_with(path_dir, &cwd) {
-            // Try to canonicalize the actual filename, but it's ok if that fails. The file doesn't
-            // have to exist.
-            let path = path_dir.join(path.file_name().unwrap_or(path.as_os_str()));
-            let path = canonicalize_with(&path, &cwd).unwrap_or(path);
-            engine_state.plugin_path = Some(path)
-        } else {
-            // It's an error if the directory for the plugin file doesn't exist.
-            report_error(
-                &working_set,
-                &ParseError::FileNotFound(
-                    path_dir.to_string_lossy().into_owned(),
-                    plugin_file.span,
-                ),
-            );
+    if let Ok(cwd) = engine_state.cwd_as_string(None) {
+        if let Some(plugin_file) = plugin_file {
+            let path = Path::new(&plugin_file.item);
+            let path_dir = path.parent().unwrap_or(path);
+            // Just try to canonicalize the directory of the plugin file first.
+            if let Ok(path_dir) = canonicalize_with(path_dir, &cwd) {
+                // Try to canonicalize the actual filename, but it's ok if that fails. The file doesn't
+                // have to exist.
+                let path = path_dir.join(path.file_name().unwrap_or(path.as_os_str()));
+                let path = canonicalize_with(&path, &cwd).unwrap_or(path);
+                engine_state.plugin_path = Some(path)
+            } else {
+                // It's an error if the directory for the plugin file doesn't exist.
+                report_error(
+                    &working_set,
+                    &ParseError::FileNotFound(
+                        path_dir.to_string_lossy().into_owned(),
+                        plugin_file.span,
+                    ),
+                );
+            }
+        } else if let Some(mut plugin_path) = nu_path::config_dir() {
+            // Path to store plugins signatures
+            plugin_path.push(storage_path);
+            let mut plugin_path = canonicalize_with(&plugin_path, &cwd).unwrap_or(plugin_path);
+            plugin_path.push(PLUGIN_FILE);
+            let plugin_path = canonicalize_with(&plugin_path, &cwd).unwrap_or(plugin_path);
+            engine_state.plugin_path = Some(plugin_path);
         }
-    } else if let Some(mut plugin_path) = nu_path::config_dir() {
-        // Path to store plugins signatures
-        plugin_path.push(storage_path);
-        let mut plugin_path = canonicalize_with(&plugin_path, &cwd).unwrap_or(plugin_path);
-        plugin_path.push(PLUGIN_FILE);
-        let plugin_path = canonicalize_with(&plugin_path, &cwd).unwrap_or(plugin_path);
-        engine_state.plugin_path = Some(plugin_path);
     }
 }
 
@@ -236,8 +236,7 @@ pub fn eval_config_contents(
             engine_state.file = prev_file;
 
             // Merge the environment in case env vars changed in the config
-            #[allow(deprecated)]
-            match nu_engine::env::current_dir(engine_state, stack) {
+            match engine_state.cwd(Some(stack)) {
                 Ok(cwd) => {
                     if let Err(e) = engine_state.merge_env(stack, cwd) {
                         let working_set = StateWorkingSet::new(engine_state);
@@ -274,8 +273,9 @@ pub fn migrate_old_plugin_file(engine_state: &EngineState, storage_path: &str) -
 
     let start_time = std::time::Instant::now();
 
-    #[allow(deprecated)]
-    let cwd = engine_state.current_work_dir();
+    let Ok(cwd) = engine_state.cwd_as_string(None) else {
+        return false;
+    };
 
     let Some(config_dir) = nu_path::config_dir().and_then(|mut dir| {
         dir.push(storage_path);
diff --git a/crates/nu-cli/src/eval_file.rs b/crates/nu-cli/src/eval_file.rs
index 90b1e840ee..8107de71a5 100644
--- a/crates/nu-cli/src/eval_file.rs
+++ b/crates/nu-cli/src/eval_file.rs
@@ -1,8 +1,7 @@
 use crate::util::eval_source;
 use log::{info, trace};
 use miette::{IntoDiagnostic, Result};
-#[allow(deprecated)]
-use nu_engine::{convert_env_values, current_dir, eval_block};
+use nu_engine::{convert_env_values, eval_block};
 use nu_parser::parse;
 use nu_path::canonicalize_with;
 use nu_protocol::{
@@ -30,8 +29,7 @@ pub fn evaluate_file(
         std::process::exit(1);
     }
 
-    #[allow(deprecated)]
-    let cwd = current_dir(engine_state, stack)?;
+    let cwd = engine_state.cwd_as_string(Some(stack))?;
 
     let file_path = canonicalize_with(&path, cwd).unwrap_or_else(|e| {
         let working_set = StateWorkingSet::new(engine_state);
diff --git a/crates/nu-cmd-base/src/util.rs b/crates/nu-cmd-base/src/util.rs
index 8654975c2b..619237a21c 100644
--- a/crates/nu-cmd-base/src/util.rs
+++ b/crates/nu-cmd-base/src/util.rs
@@ -13,8 +13,7 @@ pub fn get_init_cwd() -> PathBuf {
 }
 
 pub fn get_guaranteed_cwd(engine_state: &EngineState, stack: &Stack) -> PathBuf {
-    #[allow(deprecated)]
-    nu_engine::env::current_dir(engine_state, stack).unwrap_or_else(|e| {
+    engine_state.cwd(Some(stack)).unwrap_or_else(|e| {
         let working_set = StateWorkingSet::new(engine_state);
         report_error(&working_set, &e);
         crate::util::get_init_cwd()
diff --git a/crates/nu-cmd-plugin/src/commands/plugin/add.rs b/crates/nu-cmd-plugin/src/commands/plugin/add.rs
index 70f1f417b6..e2c1c31151 100644
--- a/crates/nu-cmd-plugin/src/commands/plugin/add.rs
+++ b/crates/nu-cmd-plugin/src/commands/plugin/add.rs
@@ -1,5 +1,4 @@
-#[allow(deprecated)]
-use nu_engine::{command_prelude::*, current_dir};
+use nu_engine::command_prelude::*;
 use nu_plugin_engine::{GetPlugin, PersistentPlugin};
 use nu_protocol::{PluginGcConfig, PluginIdentity, PluginRegistryItem, RegisteredPlugin};
 use std::sync::Arc;
@@ -82,8 +81,7 @@ apparent the next time `nu` is next launched with that plugin registry file.
         let filename: Spanned<String> = call.req(engine_state, stack, 0)?;
         let shell: Option<Spanned<String>> = call.get_flag(engine_state, stack, "shell")?;
 
-        #[allow(deprecated)]
-        let cwd = current_dir(engine_state, stack)?;
+        let cwd = engine_state.cwd(Some(stack))?;
 
         // Check the current directory, or fall back to NU_PLUGIN_DIRS
         let filename_expanded = nu_path::locate_in_dirs(&filename.item, &cwd, || {
diff --git a/crates/nu-command/src/default_context.rs b/crates/nu-command/src/default_context.rs
index d8307be84d..ba55472e15 100644
--- a/crates/nu-command/src/default_context.rs
+++ b/crates/nu-command/src/default_context.rs
@@ -125,6 +125,7 @@ pub fn add_shell_command_context(mut engine_state: EngineState) -> EngineState {
             SysMem,
             SysNet,
             SysTemp,
+            SysUsers,
             UName,
 
         };
diff --git a/crates/nu-command/src/filesystem/glob.rs b/crates/nu-command/src/filesystem/glob.rs
index c5f4bc08b4..b10e8893a0 100644
--- a/crates/nu-command/src/filesystem/glob.rs
+++ b/crates/nu-command/src/filesystem/glob.rs
@@ -1,5 +1,4 @@
-#[allow(deprecated)]
-use nu_engine::{command_prelude::*, env::current_dir};
+use nu_engine::command_prelude::*;
 use std::sync::{atomic::AtomicBool, Arc};
 use wax::{Glob as WaxGlob, WalkBehavior, WalkEntry};
 
@@ -179,8 +178,7 @@ impl Command for Glob {
             }
         };
 
-        #[allow(deprecated)]
-        let path = current_dir(engine_state, stack)?;
+        let path = engine_state.cwd_as_string(Some(stack))?;
         let path = match nu_path::canonicalize_with(prefix, path) {
             Ok(path) => path,
             Err(e) if e.to_string().contains("os error 2") =>
diff --git a/crates/nu-command/src/filesystem/watch.rs b/crates/nu-command/src/filesystem/watch.rs
index 224d58d0d0..fda542c8a8 100644
--- a/crates/nu-command/src/filesystem/watch.rs
+++ b/crates/nu-command/src/filesystem/watch.rs
@@ -5,8 +5,7 @@ use notify_debouncer_full::{
         EventKind, RecursiveMode, Watcher,
     },
 };
-#[allow(deprecated)]
-use nu_engine::{command_prelude::*, current_dir, ClosureEval};
+use nu_engine::{command_prelude::*, ClosureEval};
 use nu_protocol::{
     engine::{Closure, StateWorkingSet},
     format_error,
@@ -74,8 +73,7 @@ impl Command for Watch {
         _input: PipelineData,
     ) -> Result<PipelineData, ShellError> {
         let head = call.head;
-        #[allow(deprecated)]
-        let cwd = current_dir(engine_state, stack)?;
+        let cwd = engine_state.cwd_as_string(Some(stack))?;
         let path_arg: Spanned<String> = call.req(engine_state, stack, 0)?;
 
         let path_no_whitespace = &path_arg
diff --git a/crates/nu-command/src/system/sys/host.rs b/crates/nu-command/src/system/sys/host.rs
index 23508b5b6e..969f59ef99 100644
--- a/crates/nu-command/src/system/sys/host.rs
+++ b/crates/nu-command/src/system/sys/host.rs
@@ -26,7 +26,8 @@ impl Command for SysHost {
         call: &Call,
         _input: PipelineData,
     ) -> Result<PipelineData, ShellError> {
-        Ok(super::host(call.head).into_pipeline_data())
+        let host = super::host(call.head);
+        Ok(Value::record(host, call.head).into_pipeline_data())
     }
 
     fn examples(&self) -> Vec<Example> {
diff --git a/crates/nu-command/src/system/sys/mod.rs b/crates/nu-command/src/system/sys/mod.rs
index 0c61543e7d..5e0467c251 100644
--- a/crates/nu-command/src/system/sys/mod.rs
+++ b/crates/nu-command/src/system/sys/mod.rs
@@ -5,6 +5,7 @@ mod mem;
 mod net;
 mod sys_;
 mod temp;
+mod users;
 
 pub use cpu::SysCpu;
 pub use disks::SysDisks;
@@ -13,6 +14,7 @@ pub use mem::SysMem;
 pub use net::SysNet;
 pub use sys_::Sys;
 pub use temp::SysTemp;
+pub use users::SysUsers;
 
 use chrono::{DateTime, Local};
 use nu_protocol::{record, Record, Span, Value};
@@ -122,7 +124,29 @@ pub fn mem(span: Span) -> Value {
     Value::record(record, span)
 }
 
-pub fn host(span: Span) -> Value {
+pub fn users(span: Span) -> Value {
+    let users = Users::new_with_refreshed_list()
+        .iter()
+        .map(|user| {
+            let groups = user
+                .groups()
+                .iter()
+                .map(|group| Value::string(trim_cstyle_null(group.name()), span))
+                .collect();
+
+            let record = record! {
+                "name" => Value::string(trim_cstyle_null(user.name()), span),
+                "groups" => Value::list(groups, span),
+            };
+
+            Value::record(record, span)
+        })
+        .collect();
+
+    Value::list(users, span)
+}
+
+pub fn host(span: Span) -> Record {
     let mut record = Record::new();
 
     if let Some(name) = System::name() {
@@ -160,27 +184,7 @@ pub fn host(span: Span) -> Value {
     let timestamp_str = datetime.with_timezone(datetime.offset()).to_rfc3339();
     record.push("boot_time", Value::string(timestamp_str, span));
 
-    let users = Users::new_with_refreshed_list()
-        .iter()
-        .map(|user| {
-            let groups = user
-                .groups()
-                .iter()
-                .map(|group| Value::string(trim_cstyle_null(group.name()), span))
-                .collect();
-
-            let record = record! {
-                "name" => Value::string(trim_cstyle_null(user.name()), span),
-                "groups" => Value::list(groups, span),
-            };
-
-            Value::record(record, span)
-        })
-        .collect();
-
-    record.push("sessions", Value::list(users, span));
-
-    Value::record(record, span)
+    record
 }
 
 pub fn temp(span: Span) -> Value {
diff --git a/crates/nu-command/src/system/sys/sys_.rs b/crates/nu-command/src/system/sys/sys_.rs
index 39dc2d419b..2886836be9 100644
--- a/crates/nu-command/src/system/sys/sys_.rs
+++ b/crates/nu-command/src/system/sys/sys_.rs
@@ -43,8 +43,11 @@ impl Command for Sys {
         );
 
         let head = call.head;
+
+        let mut host = super::host(head);
+        host.push("sessions", super::users(head));
         let record = record! {
-            "host" => super::host(head),
+            "host" => Value::record(host, head),
             "cpu" => super::cpu(head),
             "disks" => super::disks(head),
             "mem" => super::mem(head),
diff --git a/crates/nu-command/src/system/sys/users.rs b/crates/nu-command/src/system/sys/users.rs
new file mode 100644
index 0000000000..9aab2b9b7b
--- /dev/null
+++ b/crates/nu-command/src/system/sys/users.rs
@@ -0,0 +1,38 @@
+use nu_engine::command_prelude::*;
+
+#[derive(Clone)]
+pub struct SysUsers;
+
+impl Command for SysUsers {
+    fn name(&self) -> &str {
+        "sys users"
+    }
+
+    fn signature(&self) -> Signature {
+        Signature::build("sys users")
+            .category(Category::System)
+            .input_output_types(vec![(Type::Nothing, Type::record())])
+    }
+
+    fn usage(&self) -> &str {
+        "View information about the users on the system."
+    }
+
+    fn run(
+        &self,
+        _engine_state: &EngineState,
+        _stack: &mut Stack,
+        call: &Call,
+        _input: PipelineData,
+    ) -> Result<PipelineData, ShellError> {
+        Ok(super::users(call.head).into_pipeline_data())
+    }
+
+    fn examples(&self) -> Vec<Example> {
+        vec![Example {
+            description: "Show info about the system users",
+            example: "sys users",
+            result: None,
+        }]
+    }
+}
diff --git a/crates/nu-engine/src/env.rs b/crates/nu-engine/src/env.rs
index 19ed589dcf..ae226c4421 100644
--- a/crates/nu-engine/src/env.rs
+++ b/crates/nu-engine/src/env.rs
@@ -286,8 +286,7 @@ pub fn find_in_dirs_env(
             Err(e) => return Err(e),
         }
     } else {
-        #[allow(deprecated)]
-        current_dir_str(engine_state, stack)?
+        engine_state.cwd_as_string(Some(stack))?
     };
 
     let check_dir = |lib_dirs: Option<Value>| -> Option<PathBuf> {
diff --git a/crates/nu-parser/src/flatten.rs b/crates/nu-parser/src/flatten.rs
index 3484c53d0f..e70a48e9f1 100644
--- a/crates/nu-parser/src/flatten.rs
+++ b/crates/nu-parser/src/flatten.rs
@@ -385,12 +385,23 @@ fn flatten_expression_into(
 
                         output.extend(flattened);
                     }
-                    ListItem::Spread(_, expr) => {
-                        output.push((
-                            Span::new(expr.span.start, expr.span.start + 3),
-                            FlatShape::Operator,
-                        ));
-                        flatten_expression_into(working_set, expr, output);
+                    ListItem::Spread(op_span, expr) => {
+                        if op_span.start > last_end {
+                            output.push((Span::new(last_end, op_span.start), FlatShape::List));
+                        }
+                        output.push((*op_span, FlatShape::Operator));
+                        last_end = op_span.end;
+
+                        let flattened_inner = flatten_expression(working_set, expr);
+                        if let Some(first) = flattened_inner.first() {
+                            if first.0.start > last_end {
+                                output.push((Span::new(last_end, first.0.start), FlatShape::List));
+                            }
+                        }
+                        if let Some(last) = flattened_inner.last() {
+                            last_end = last.0.end;
+                        }
+                        output.extend(flattened_inner);
                     }
                 }
             }
diff --git a/crates/nu-parser/src/parser.rs b/crates/nu-parser/src/parser.rs
index 19b84c1e75..7dfccf7bad 100644
--- a/crates/nu-parser/src/parser.rs
+++ b/crates/nu-parser/src/parser.rs
@@ -3895,7 +3895,7 @@ pub fn parse_list_expression(
                         Type::List(elem_ty) => *elem_ty.clone(),
                         _ => Type::Any,
                     };
-                    let span = Span::new(curr_span.start, spread_arg.span.end);
+                    let span = Span::new(curr_span.start, curr_span.start + 3);
                     (ListItem::Spread(span, spread_arg), elem_ty)
                 } else {
                     let arg = parse_multispan_value(
diff --git a/crates/nu-protocol/src/engine/engine_state.rs b/crates/nu-protocol/src/engine/engine_state.rs
index 5012754b3b..1593b3341a 100644
--- a/crates/nu-protocol/src/engine/engine_state.rs
+++ b/crates/nu-protocol/src/engine/engine_state.rs
@@ -984,6 +984,20 @@ impl EngineState {
         }
     }
 
+    /// Like `EngineState::cwd()`, but returns a String instead of a PathBuf for convenience.
+    pub fn cwd_as_string(&self, stack: Option<&Stack>) -> Result<String, ShellError> {
+        let cwd = self.cwd(stack)?;
+        cwd.into_os_string()
+            .into_string()
+            .map_err(|err| ShellError::NonUtf8Custom {
+                msg: format!(
+                    "The current working directory is not a valid utf-8 string: {:?}",
+                    err
+                ),
+                span: Span::unknown(),
+            })
+    }
+
     // TODO: see if we can completely get rid of this
     pub fn get_file_contents(&self) -> &[CachedFile] {
         &self.files
diff --git a/crates/nu-std/src/lib.rs b/crates/nu-std/src/lib.rs
index a3cf9271a5..a20e3fc5da 100644
--- a/crates/nu-std/src/lib.rs
+++ b/crates/nu-std/src/lib.rs
@@ -1,6 +1,5 @@
 use log::trace;
-#[allow(deprecated)]
-use nu_engine::{env::current_dir, eval_block};
+use nu_engine::eval_block;
 use nu_parser::parse;
 use nu_protocol::{
     debugger::WithoutDebug,
@@ -99,8 +98,7 @@ use std pwd
 
     eval_block::<WithoutDebug>(engine_state, &mut stack, &block, pipeline_data)?;
 
-    #[allow(deprecated)]
-    let cwd = current_dir(engine_state, &stack)?;
+    let cwd = engine_state.cwd(Some(&stack))?;
     engine_state.merge_env(&mut stack, cwd)?;
 
     Ok(())
diff --git a/src/config_files.rs b/src/config_files.rs
index e67af7f2e1..6b2e5bb16d 100644
--- a/src/config_files.rs
+++ b/src/config_files.rs
@@ -31,14 +31,19 @@ pub(crate) fn read_config_file(
     // Load config startup file
     if let Some(file) = config_file {
         let working_set = StateWorkingSet::new(engine_state);
-        #[allow(deprecated)]
-        let cwd = working_set.get_cwd();
 
-        if let Ok(path) = canonicalize_with(&file.item, cwd) {
-            eval_config_contents(path, engine_state, stack);
-        } else {
-            let e = ParseError::FileNotFound(file.item, file.span);
-            report_error(&working_set, &e);
+        match engine_state.cwd_as_string(Some(stack)) {
+            Ok(cwd) => {
+                if let Ok(path) = canonicalize_with(&file.item, cwd) {
+                    eval_config_contents(path, engine_state, stack);
+                } else {
+                    let e = ParseError::FileNotFound(file.item, file.span);
+                    report_error(&working_set, &e);
+                }
+            }
+            Err(e) => {
+                report_error(&working_set, &e);
+            }
         }
     } else if let Some(mut config_path) = nu_path::config_dir() {
         config_path.push(NUSHELL_FOLDER);
@@ -144,8 +149,7 @@ pub(crate) fn read_default_env_file(engine_state: &mut EngineState, stack: &mut
 
     info!("read_config_file {}:{}:{}", file!(), line!(), column!());
     // Merge the environment in case env vars changed in the config
-    #[allow(deprecated)]
-    match nu_engine::env::current_dir(engine_state, stack) {
+    match engine_state.cwd(Some(stack)) {
         Ok(cwd) => {
             if let Err(e) = engine_state.merge_env(stack, cwd) {
                 let working_set = StateWorkingSet::new(engine_state);
@@ -186,8 +190,7 @@ fn eval_default_config(
     );
 
     // Merge the environment in case env vars changed in the config
-    #[allow(deprecated)]
-    match nu_engine::env::current_dir(engine_state, stack) {
+    match engine_state.cwd(Some(stack)) {
         Ok(cwd) => {
             if let Err(e) = engine_state.merge_env(stack, cwd) {
                 let working_set = StateWorkingSet::new(engine_state);
diff --git a/src/test_bins.rs b/src/test_bins.rs
index 5fef4976a7..73a760ada1 100644
--- a/src/test_bins.rs
+++ b/src/test_bins.rs
@@ -249,8 +249,9 @@ pub fn nu_repl() {
 
     for (i, line) in source_lines.iter().enumerate() {
         let mut stack = Stack::with_parent(top_stack.clone());
-        #[allow(deprecated)]
-        let cwd = nu_engine::env::current_dir(&engine_state, &stack)
+
+        let cwd = engine_state
+            .cwd(Some(&stack))
             .unwrap_or_else(|err| outcome_err(&engine_state, &err));
 
         // Before doing anything, merge the environment from the previous REPL iteration into the