Fix a bunch of other low-hanging style lints (#36498)

- **Fix a bunch of low hanging style lints like unnecessary-return**
- **Fix single worktree violation**
- **And the rest**

Release Notes:

- N/A

Cargo.toml

@@ -821,6 +821,7 @@ single_range_in_vec_init = "allow"
 style = { level = "allow", priority = -1 }
 
 # Temporary list of style lints that we've fixed so far.
+comparison_to_empty = "warn"
 iter_cloned_collect = "warn"
 iter_next_slice = "warn"
 iter_nth = "warn"
@@ -831,8 +832,13 @@ question_mark = { level = "deny" }
 redundant_closure = { level = "deny" }
 declare_interior_mutable_const = { level = "deny" }
 collapsible_if = { level = "warn"}
+collapsible_else_if = { level = "warn" }
 needless_borrow = { level = "warn"}
+needless_return = { level = "warn" }
 unnecessary_mut_passed = {level = "warn"}
+unnecessary_map_or = { level = "warn" }
+unused_unit = "warn"
+
 # Individual rules that have violations in the codebase:
 type_complexity = "allow"
 # We often return trait objects from `new` functions.

crates/acp_thread/src/acp_thread.rs

@@ -49,7 +49,7 @@ impl UserMessage {
         if self
             .checkpoint
             .as_ref()
-            .map_or(false, |checkpoint| checkpoint.show)
+            .is_some_and(|checkpoint| checkpoint.show)
         {
             writeln!(markdown, "## User (checkpoint)").unwrap();
         } else {

crates/acp_thread/src/mention.rs

@@ -79,12 +79,10 @@ impl MentionUri {
                     } else {
                         Ok(Self::Selection { path, line_range })
                     }
+                } else if input.ends_with("/") {
+                    Ok(Self::Directory { abs_path: path })
                 } else {
-                    if input.ends_with("/") {
-                        Ok(Self::Directory { abs_path: path })
-                    } else {
-                        Ok(Self::File { abs_path: path })
-                    }
+                    Ok(Self::File { abs_path: path })
                 }
             }
             "zed" => {

crates/action_log/src/action_log.rs

@@ -116,7 +116,7 @@ impl ActionLog {
             } else if buffer
                 .read(cx)
                 .file()
-                .map_or(false, |file| file.disk_state().exists())
+                .is_some_and(|file| file.disk_state().exists())
             {
                 TrackedBufferStatus::Created {
                     existing_file_content: Some(buffer.read(cx).as_rope().clone()),
@@ -215,7 +215,7 @@ impl ActionLog {
                 if buffer
                     .read(cx)
                     .file()
-                    .map_or(false, |file| file.disk_state() == DiskState::Deleted)
+                    .is_some_and(|file| file.disk_state() == DiskState::Deleted)
                 {
                     // If the buffer had been edited by a tool, but it got
                     // deleted externally, we want to stop tracking it.
@@ -227,7 +227,7 @@ impl ActionLog {
                 if buffer
                     .read(cx)
                     .file()
-                    .map_or(false, |file| file.disk_state() != DiskState::Deleted)
+                    .is_some_and(|file| file.disk_state() != DiskState::Deleted)
                 {
                     // If the buffer had been deleted by a tool, but it got
                     // resurrected externally, we want to clear the edits we
@@ -811,7 +811,7 @@ impl ActionLog {
                 tracked.version != buffer.version
                     && buffer
                         .file()
-                        .map_or(false, |file| file.disk_state() != DiskState::Deleted)
+                        .is_some_and(|file| file.disk_state() != DiskState::Deleted)
             })
             .map(|(buffer, _)| buffer)
     }
@@ -847,7 +847,7 @@ fn apply_non_conflicting_edits(
                 conflict = true;
                 if new_edits
                     .peek()
-                    .map_or(false, |next_edit| next_edit.old.overlaps(&old_edit.new))
+                    .is_some_and(|next_edit| next_edit.old.overlaps(&old_edit.new))
                 {
                     new_edit = new_edits.next().unwrap();
                 } else {

crates/agent/src/agent_profile.rs

@@ -90,7 +90,7 @@ impl AgentProfile {
             return false;
         };
 
-        return Self::is_enabled(settings, source, tool_name);
+        Self::is_enabled(settings, source, tool_name)
     }
 
     fn is_enabled(settings: &AgentProfileSettings, source: ToolSource, name: String) -> bool {

crates/agent/src/thread_store.rs

@@ -42,7 +42,7 @@ use std::{
 use util::ResultExt as _;
 
 pub static ZED_STATELESS: std::sync::LazyLock<bool> =
-    std::sync::LazyLock::new(|| std::env::var("ZED_STATELESS").map_or(false, |v| !v.is_empty()));
+    std::sync::LazyLock::new(|| std::env::var("ZED_STATELESS").is_ok_and(|v| !v.is_empty()));
 
 #[derive(Debug, Clone, PartialEq, Eq, Serialize, Deserialize)]
 pub enum DataType {

crates/agent/src/tool_use.rs

@@ -275,7 +275,7 @@ impl ToolUseState {
     pub fn message_has_tool_results(&self, assistant_message_id: MessageId) -> bool {
         self.tool_uses_by_assistant_message
             .get(&assistant_message_id)
-            .map_or(false, |results| !results.is_empty())
+            .is_some_and(|results| !results.is_empty())
     }
 
     pub fn tool_result(

crates/agent2/src/db.rs

@@ -184,7 +184,7 @@ impl DbThread {
 }
 
 pub static ZED_STATELESS: std::sync::LazyLock<bool> =
-    std::sync::LazyLock::new(|| std::env::var("ZED_STATELESS").map_or(false, |v| !v.is_empty()));
+    std::sync::LazyLock::new(|| std::env::var("ZED_STATELESS").is_ok_and(|v| !v.is_empty()));
 
 #[derive(Debug, Clone, PartialEq, Eq, Serialize, Deserialize)]
 pub enum DataType {

crates/agent2/src/tests/mod.rs

@@ -742,7 +742,7 @@ async fn expect_tool_call(events: &mut UnboundedReceiver<Result<ThreadEvent>>) -
         .expect("no tool call authorization event received")
         .unwrap();
     match event {
-        ThreadEvent::ToolCall(tool_call) => return tool_call,
+        ThreadEvent::ToolCall(tool_call) => tool_call,
         event => {
             panic!("Unexpected event {event:?}");
         }
@@ -758,9 +758,7 @@ async fn expect_tool_call_update_fields(
         .expect("no tool call authorization event received")
         .unwrap();
     match event {
-        ThreadEvent::ToolCallUpdate(acp_thread::ToolCallUpdate::UpdateFields(update)) => {
-            return update;
-        }
+        ThreadEvent::ToolCallUpdate(acp_thread::ToolCallUpdate::UpdateFields(update)) => update,
         event => {
             panic!("Unexpected event {event:?}");
         }

crates/agent2/src/thread.rs

@@ -1356,7 +1356,7 @@ impl Thread {
 
         // Ensure the last message ends in the current tool use
         let last_message = self.pending_message();
-        let push_new_tool_use = last_message.content.last_mut().map_or(true, |content| {
+        let push_new_tool_use = last_message.content.last_mut().is_none_or(|content| {
             if let AgentMessageContent::ToolUse(last_tool_use) = content {
                 if last_tool_use.id == tool_use.id {
                     *last_tool_use = tool_use.clone();
@@ -1408,7 +1408,7 @@ impl Thread {
             status: Some(acp::ToolCallStatus::InProgress),
             ..Default::default()
         });
-        let supports_images = self.model().map_or(false, |model| model.supports_images());
+        let supports_images = self.model().is_some_and(|model| model.supports_images());
         let tool_result = tool.run(tool_use.input, tool_event_stream, cx);
         log::info!("Running tool {}", tool_use.name);
         Some(cx.foreground_executor().spawn(async move {

crates/agent2/src/tools/read_file_tool.rs

@@ -175,7 +175,7 @@ impl AgentTool for ReadFileTool {
                 buffer
                     .file()
                     .as_ref()
-                    .map_or(true, |file| !file.disk_state().exists())
+                    .is_none_or(|file| !file.disk_state().exists())
             })? {
                 anyhow::bail!("{file_path} not found");
             }

crates/agent2/src/tools/terminal_tool.rs

@@ -271,7 +271,7 @@ fn working_dir(
     let project = project.read(cx);
     let cd = &input.cd;
 
-    if cd == "." || cd == "" {
+    if cd == "." || cd.is_empty() {
         // Accept "." or "" as meaning "the one worktree" if we only have one worktree.
         let mut worktrees = project.worktrees(cx);
 
@@ -296,10 +296,8 @@ fn working_dir(
             {
                 return Ok(Some(input_path.into()));
             }
-        } else {
-            if let Some(worktree) = project.worktree_for_root_name(cd, cx) {
-                return Ok(Some(worktree.read(cx).abs_path().to_path_buf()));
-            }
+        } else if let Some(worktree) = project.worktree_for_root_name(cd, cx) {
+            return Ok(Some(worktree.read(cx).abs_path().to_path_buf()));
         }
 
         anyhow::bail!("`cd` directory {cd:?} was not in any of the project's worktrees.");

crates/agent_servers/src/agent_servers.rs

@@ -104,7 +104,7 @@ impl AgentServerCommand {
         cx: &mut AsyncApp,
     ) -> Option<Self> {
         if let Some(agent_settings) = settings {
-            return Some(Self {
+            Some(Self {
                 path: agent_settings.command.path,
                 args: agent_settings
                     .command
@@ -113,7 +113,7 @@ impl AgentServerCommand {
                     .chain(extra_args.iter().map(|arg| arg.to_string()))
                     .collect(),
                 env: agent_settings.command.env,
-            });
+            })
         } else {
             match find_bin_in_path(path_bin_name, project, cx).await {
                 Some(path) => Some(Self {

crates/agent_servers/src/e2e_tests.rs

@@ -471,7 +471,7 @@ pub fn get_zed_path() -> PathBuf {
 
     while zed_path
         .file_name()
-        .map_or(true, |name| name.to_string_lossy() != "debug")
+        .is_none_or(|name| name.to_string_lossy() != "debug")
     {
         if !zed_path.pop() {
             panic!("Could not find target directory");

crates/agent_settings/src/agent_profile.rs

@@ -58,7 +58,7 @@ impl AgentProfileSettings {
             || self
                 .context_servers
                 .get(server_id)
-                .map_or(false, |preset| preset.tools.get(tool_name) == Some(&true))
+                .is_some_and(|preset| preset.tools.get(tool_name) == Some(&true))
     }
 }
 

crates/agent_ui/src/acp/completion_provider.rs

@@ -797,7 +797,7 @@ impl MentionCompletion {
             && line
                 .chars()
                 .nth(last_mention_start - 1)
-                .map_or(false, |c| !c.is_whitespace())
+                .is_some_and(|c| !c.is_whitespace())
         {
             return None;
         }

crates/agent_ui/src/acp/message_editor.rs

@@ -1552,14 +1552,14 @@ impl SemanticsProvider for SlashCommandSemanticsProvider {
             return None;
         }
         let range = snapshot.anchor_after(start)..snapshot.anchor_after(end);
-        return Some(Task::ready(vec![project::Hover {
+        Some(Task::ready(vec![project::Hover {
             contents: vec![project::HoverBlock {
                 text: "Slash commands are not supported".into(),
                 kind: project::HoverBlockKind::PlainText,
             }],
             range: Some(range),
             language: None,
-        }]));
+        }]))
     }
 
     fn inline_values(

crates/agent_ui/src/acp/thread_view.rs

@@ -102,7 +102,7 @@ impl ProfileProvider for Entity<agent2::Thread> {
     fn profiles_supported(&self, cx: &App) -> bool {
         self.read(cx)
             .model()
-            .map_or(false, |model| model.supports_tools())
+            .is_some_and(|model| model.supports_tools())
     }
 }
 
@@ -2843,7 +2843,7 @@ impl AcpThreadView {
 
         if thread
             .model()
-            .map_or(true, |model| !model.supports_burn_mode())
+            .is_none_or(|model| !model.supports_burn_mode())
         {
             return None;
         }
@@ -2875,9 +2875,9 @@ impl AcpThreadView {
 
     fn render_send_button(&self, cx: &mut Context<Self>) -> AnyElement {
         let is_editor_empty = self.message_editor.read(cx).is_empty(cx);
-        let is_generating = self.thread().map_or(false, |thread| {
-            thread.read(cx).status() != ThreadStatus::Idle
-        });
+        let is_generating = self
+            .thread()
+            .is_some_and(|thread| thread.read(cx).status() != ThreadStatus::Idle);
 
         if is_generating && is_editor_empty {
             IconButton::new("stop-generation", IconName::Stop)
@@ -3455,18 +3455,16 @@ impl AcpThreadView {
             } else {
                 format!("Retrying. Next attempt in {next_attempt_in_secs} seconds.")
             }
+        } else if next_attempt_in_secs == 1 {
+            format!(
+                "Retrying. Next attempt in 1 second (Attempt {} of {}).",
+                state.attempt, state.max_attempts,
+            )
         } else {
-            if next_attempt_in_secs == 1 {
-                format!(
-                    "Retrying. Next attempt in 1 second (Attempt {} of {}).",
-                    state.attempt, state.max_attempts,
-                )
-            } else {
-                format!(
-                    "Retrying. Next attempt in {next_attempt_in_secs} seconds (Attempt {} of {}).",
-                    state.attempt, state.max_attempts,
-                )
-            }
+            format!(
+                "Retrying. Next attempt in {next_attempt_in_secs} seconds (Attempt {} of {}).",
+                state.attempt, state.max_attempts,
+            )
         };
 
         Some(
@@ -3552,7 +3550,7 @@ impl AcpThreadView {
         let supports_burn_mode = thread
             .read(cx)
             .model()
-            .map_or(false, |model| model.supports_burn_mode());
+            .is_some_and(|model| model.supports_burn_mode());
 
         let focus_handle = self.focus_handle(cx);
 

crates/agent_ui/src/active_thread.rs

@@ -2246,9 +2246,7 @@ impl ActiveThread {
         let after_editing_message = self
             .editing_message
             .as_ref()
-            .map_or(false, |(editing_message_id, _)| {
-                message_id > *editing_message_id
-            });
+            .is_some_and(|(editing_message_id, _)| message_id > *editing_message_id);
 
         let backdrop = div()
             .id(("backdrop", ix))

crates/agent_ui/src/agent_configuration.rs

@@ -96,7 +96,7 @@ impl AgentConfiguration {
         let mut expanded_provider_configurations = HashMap::default();
         if LanguageModelRegistry::read_global(cx)
             .provider(&ZED_CLOUD_PROVIDER_ID)
-            .map_or(false, |cloud_provider| cloud_provider.must_accept_terms(cx))
+            .is_some_and(|cloud_provider| cloud_provider.must_accept_terms(cx))
         {
             expanded_provider_configurations.insert(ZED_CLOUD_PROVIDER_ID, true);
         }

crates/agent_ui/src/agent_diff.rs

@@ -285,7 +285,7 @@ impl AgentDiffPane {
                     && buffer
                         .read(cx)
                         .file()
-                        .map_or(false, |file| file.disk_state() == DiskState::Deleted)
+                        .is_some_and(|file| file.disk_state() == DiskState::Deleted)
                 {
                     editor.fold_buffer(snapshot.text.remote_id(), cx)
                 }
@@ -1063,7 +1063,7 @@ impl ToolbarItemView for AgentDiffToolbar {
         }
 
         self.active_item = None;
-        return self.location(cx);
+        self.location(cx)
     }
 
     fn pane_focus_update(
@@ -1509,7 +1509,7 @@ impl AgentDiff {
                     .read(cx)
                     .entries()
                     .last()
-                    .map_or(false, |entry| entry.diffs().next().is_some())
+                    .is_some_and(|entry| entry.diffs().next().is_some())
                 {
                     self.update_reviewing_editors(workspace, window, cx);
                 }
@@ -1519,7 +1519,7 @@ impl AgentDiff {
                     .read(cx)
                     .entries()
                     .get(*ix)
-                    .map_or(false, |entry| entry.diffs().next().is_some())
+                    .is_some_and(|entry| entry.diffs().next().is_some())
                 {
                     self.update_reviewing_editors(workspace, window, cx);
                 }
@@ -1709,7 +1709,7 @@ impl AgentDiff {
                 .read_with(cx, |editor, _cx| editor.workspace())
                 .ok()
                 .flatten()
-                .map_or(false, |editor_workspace| {
+                .is_some_and(|editor_workspace| {
                     editor_workspace.entity_id() == workspace.entity_id()
                 });
 
@@ -1868,7 +1868,7 @@ impl AgentDiff {
             }
         }
 
-        return Some(Task::ready(Ok(())));
+        Some(Task::ready(Ok(())))
     }
 }
 

crates/agent_ui/src/agent_panel.rs

@@ -1463,7 +1463,7 @@ impl AgentPanel {
             AssistantConfigurationEvent::NewThread(provider) => {
                 if LanguageModelRegistry::read_global(cx)
                     .default_model()
-                    .map_or(true, |model| model.provider.id() != provider.id())
+                    .is_none_or(|model| model.provider.id() != provider.id())
                     && let Some(model) = provider.default_model(cx)
                 {
                     update_settings_file::<AgentSettings>(
@@ -2708,9 +2708,7 @@ impl AgentPanel {
             }
             ActiveView::ExternalAgentThread { .. }
             | ActiveView::History
-            | ActiveView::Configuration => {
-                return None;
-            }
+            | ActiveView::Configuration => None,
         }
     }
 
@@ -2726,7 +2724,7 @@ impl AgentPanel {
                     .thread()
                     .read(cx)
                     .configured_model()
-                    .map_or(false, |model| {
+                    .is_some_and(|model| {
                         model.provider.id() != language_model::ZED_CLOUD_PROVIDER_ID
                     })
                 {
@@ -2737,7 +2735,7 @@ impl AgentPanel {
                 if LanguageModelRegistry::global(cx)
                     .read(cx)
                     .default_model()
-                    .map_or(false, |model| {
+                    .is_some_and(|model| {
                         model.provider.id() != language_model::ZED_CLOUD_PROVIDER_ID
                     })
                 {
@@ -3051,9 +3049,7 @@ impl AgentPanel {
         let zed_provider_configured = AgentSettings::get_global(cx)
             .default_model
             .as_ref()
-            .map_or(false, |selection| {
-                selection.provider.0.as_str() == "zed.dev"
-            });
+            .is_some_and(|selection| selection.provider.0.as_str() == "zed.dev");
 
         let callout = if zed_provider_configured {
             Callout::new()

crates/agent_ui/src/context_picker.rs

@@ -610,9 +610,7 @@ pub(crate) fn available_context_picker_entries(
         .read(cx)
         .active_item(cx)
         .and_then(|item| item.downcast::<Editor>())
-        .map_or(false, |editor| {
-            editor.update(cx, |editor, cx| editor.has_non_empty_selection(cx))
-        });
+        .is_some_and(|editor| editor.update(cx, |editor, cx| editor.has_non_empty_selection(cx)));
     if has_selection {
         entries.push(ContextPickerEntry::Action(
             ContextPickerAction::AddSelections,
@@ -680,7 +678,7 @@ pub(crate) fn recent_context_picker_entries(
             .filter(|(_, abs_path)| {
                 abs_path
                     .as_ref()
-                    .map_or(true, |path| !exclude_paths.contains(path.as_path()))
+                    .is_none_or(|path| !exclude_paths.contains(path.as_path()))
             })
             .take(4)
             .filter_map(|(project_path, _)| {

crates/agent_ui/src/context_picker/completion_provider.rs

@@ -1020,7 +1020,7 @@ impl MentionCompletion {
             && line
                 .chars()
                 .nth(last_mention_start - 1)
-                .map_or(false, |c| !c.is_whitespace())
+                .is_some_and(|c| !c.is_whitespace())
         {
             return None;
         }

crates/agent_ui/src/context_picker/fetch_context_picker.rs

@@ -226,9 +226,10 @@ impl PickerDelegate for FetchContextPickerDelegate {
         _window: &mut Window,
         cx: &mut Context<Picker<Self>>,
     ) -> Option<Self::ListItem> {
-        let added = self.context_store.upgrade().map_or(false, |context_store| {
-            context_store.read(cx).includes_url(&self.url)
-        });
+        let added = self
+            .context_store
+            .upgrade()
+            .is_some_and(|context_store| context_store.read(cx).includes_url(&self.url));
 
         Some(
             ListItem::new(ix)

crates/agent_ui/src/context_picker/file_context_picker.rs

@@ -239,9 +239,7 @@ pub(crate) fn search_files(
 
                 PathMatchCandidateSet {
                     snapshot: worktree.snapshot(),
-                    include_ignored: worktree
-                        .root_entry()
-                        .map_or(false, |entry| entry.is_ignored),
+                    include_ignored: worktree.root_entry().is_some_and(|entry| entry.is_ignored),
                     include_root_name: true,
                     candidates: project::Candidates::Entries,
                 }

crates/agent_ui/src/context_picker/rules_context_picker.rs

@@ -159,7 +159,7 @@ pub fn render_thread_context_entry(
     context_store: WeakEntity<ContextStore>,
     cx: &mut App,
 ) -> Div {
-    let added = context_store.upgrade().map_or(false, |context_store| {
+    let added = context_store.upgrade().is_some_and(|context_store| {
         context_store
             .read(cx)
             .includes_user_rules(user_rules.prompt_id)

crates/agent_ui/src/context_picker/symbol_context_picker.rs

@@ -294,7 +294,7 @@ pub(crate) fn search_symbols(
                         .partition(|candidate| {
                             project
                                 .entry_for_path(&symbols[candidate.id].path, cx)
-                                .map_or(false, |e| !e.is_ignored)
+                                .is_some_and(|e| !e.is_ignored)
                         })
                 })
                 .log_err()

crates/agent_ui/src/context_picker/thread_context_picker.rs

@@ -236,12 +236,10 @@ pub fn render_thread_context_entry(
     let is_added = match entry {
         ThreadContextEntry::Thread { id, .. } => context_store
             .upgrade()
-            .map_or(false, |ctx_store| ctx_store.read(cx).includes_thread(id)),
-        ThreadContextEntry::Context { path, .. } => {
-            context_store.upgrade().map_or(false, |ctx_store| {
-                ctx_store.read(cx).includes_text_thread(path)
-            })
-        }
+            .is_some_and(|ctx_store| ctx_store.read(cx).includes_thread(id)),
+        ThreadContextEntry::Context { path, .. } => context_store
+            .upgrade()
+            .is_some_and(|ctx_store| ctx_store.read(cx).includes_text_thread(path)),
     };
 
     h_flex()

crates/agent_ui/src/inline_assistant.rs

@@ -1120,7 +1120,7 @@ impl InlineAssistant {
             if editor_assists
                 .scroll_lock
                 .as_ref()
-                .map_or(false, |lock| lock.assist_id == assist_id)
+                .is_some_and(|lock| lock.assist_id == assist_id)
             {
                 editor_assists.scroll_lock = None;
             }

crates/agent_ui/src/inline_prompt_editor.rs

@@ -345,7 +345,7 @@ impl<T: 'static> PromptEditor<T> {
                 let prompt = self.editor.read(cx).text(cx);
                 if self
                     .prompt_history_ix
-                    .map_or(true, |ix| self.prompt_history[ix] != prompt)
+                    .is_none_or(|ix| self.prompt_history[ix] != prompt)
                 {
                     self.prompt_history_ix.take();
                     self.pending_prompt = prompt;

crates/agent_ui/src/message_editor.rs

@@ -156,7 +156,7 @@ impl ProfileProvider for Entity<Thread> {
     fn profiles_supported(&self, cx: &App) -> bool {
         self.read(cx)
             .configured_model()
-            .map_or(false, |model| model.model.supports_tools())
+            .is_some_and(|model| model.model.supports_tools())
     }
 
     fn profile_id(&self, cx: &App) -> AgentProfileId {
@@ -1289,7 +1289,7 @@ impl MessageEditor {
         self.thread
             .read(cx)
             .configured_model()
-            .map_or(false, |model| model.provider.id() == ZED_CLOUD_PROVIDER_ID)
+            .is_some_and(|model| model.provider.id() == ZED_CLOUD_PROVIDER_ID)
     }
 
     fn render_usage_callout(&self, line_height: Pixels, cx: &mut Context<Self>) -> Option<Div> {
@@ -1442,7 +1442,7 @@ impl MessageEditor {
                     let message_text = editor.read(cx).text(cx);
 
                     if message_text.is_empty()
-                        && loaded_context.map_or(true, |loaded_context| loaded_context.is_empty())
+                        && loaded_context.is_none_or(|loaded_context| loaded_context.is_empty())
                     {
                         return None;
                     }

crates/agent_ui/src/slash_command_picker.rs

@@ -140,12 +140,10 @@ impl PickerDelegate for SlashCommandDelegate {
                     );
                     ret.push(index - 1);
                 }
-            } else {
-                if let SlashCommandEntry::Advert { .. } = command {
-                    previous_is_advert = true;
-                    if index != 0 {
-                        ret.push(index - 1);
-                    }
+            } else if let SlashCommandEntry::Advert { .. } = command {
+                previous_is_advert = true;
+                if index != 0 {
+                    ret.push(index - 1);
                 }
             }
         }

crates/agent_ui/src/text_thread_editor.rs

@@ -373,7 +373,7 @@ impl TextThreadEditor {
             .map(|default| default.provider);
         if provider
             .as_ref()
-            .map_or(false, |provider| provider.must_accept_terms(cx))
+            .is_some_and(|provider| provider.must_accept_terms(cx))
         {
             self.show_accept_terms = true;
             cx.notify();
@@ -457,7 +457,7 @@ impl TextThreadEditor {
                         || snapshot
                             .chars_at(newest_cursor)
                             .next()
-                            .map_or(false, |ch| ch != '\n')
+                            .is_some_and(|ch| ch != '\n')
                     {
                         editor.move_to_end_of_line(
                             &MoveToEndOfLine {

crates/askpass/src/askpass.rs

@@ -177,11 +177,11 @@ impl AskPassSession {
             _ = askpass_opened_rx.fuse() => {
                 // Note: this await can only resolve after we are dropped.
                 askpass_kill_master_rx.await.ok();
-                return AskPassResult::CancelledByUser
+                AskPassResult::CancelledByUser
             }
 
             _ = futures::FutureExt::fuse(smol::Timer::after(connection_timeout)) => {
-                return AskPassResult::Timedout
+                AskPassResult::Timedout
             }
         }
     }
@@ -215,7 +215,7 @@ pub fn main(socket: &str) {
     }
 
     #[cfg(target_os = "windows")]
-    while buffer.last().map_or(false, |&b| b == b'\n' || b == b'\r') {
+    while buffer.last().is_some_and(|&b| b == b'\n' || b == b'\r') {
         buffer.pop();
     }
     if buffer.last() != Some(&b'\0') {

crates/assistant_context/src/assistant_context.rs

@@ -1023,9 +1023,11 @@ impl AssistantContext {
                     summary: new_summary,
                     ..
                 } => {
-                    if self.summary.timestamp().map_or(true, |current_timestamp| {
-                        new_summary.timestamp > current_timestamp
-                    }) {
+                    if self
+                        .summary
+                        .timestamp()
+                        .is_none_or(|current_timestamp| new_summary.timestamp > current_timestamp)
+                    {
                         self.summary = ContextSummary::Content(new_summary);
                         summary_generated = true;
                     }
@@ -1339,7 +1341,7 @@ impl AssistantContext {
                 let is_invalid = self
                     .messages_metadata
                     .get(&message_id)
-                    .map_or(true, |metadata| {
+                    .is_none_or(|metadata| {
                         !metadata.is_cache_valid(&buffer, &message.offset_range)
                             || *encountered_invalid
                     });
@@ -1860,7 +1862,7 @@ impl AssistantContext {
                         {
                             let newline_offset = insert_position.saturating_sub(1);
                             if buffer.contains_str_at(newline_offset, "\n")
-                                && last_section_range.map_or(true, |last_section_range| {
+                                && last_section_range.is_none_or(|last_section_range| {
                                     !last_section_range
                                         .to_offset(buffer)
                                         .contains(&newline_offset)
@@ -2313,10 +2315,7 @@ impl AssistantContext {
             let mut request_message = LanguageModelRequestMessage {
                 role: message.role,
                 content: Vec::new(),
-                cache: message
-                    .cache
-                    .as_ref()
-                    .map_or(false, |cache| cache.is_anchor),
+                cache: message.cache.as_ref().is_some_and(|cache| cache.is_anchor),
             };
 
             while let Some(content) = contents.peek() {
@@ -2797,7 +2796,7 @@ impl AssistantContext {
         let mut current_message = messages.next();
         while let Some(offset) = offsets.next() {
             // Locate the message that contains the offset.
-            while current_message.as_ref().map_or(false, |message| {
+            while current_message.as_ref().is_some_and(|message| {
                 !message.offset_range.contains(&offset) && messages.peek().is_some()
             }) {
                 current_message = messages.next();
@@ -2807,7 +2806,7 @@ impl AssistantContext {
             };
 
             // Skip offsets that are in the same message.
-            while offsets.peek().map_or(false, |offset| {
+            while offsets.peek().is_some_and(|offset| {
                 message.offset_range.contains(offset) || messages.peek().is_none()
             }) {
                 offsets.next();

crates/assistant_context/src/assistant_context_tests.rs

@@ -1055,7 +1055,7 @@ fn test_mark_cache_anchors(cx: &mut App) {
     assert_eq!(
         messages_cache(&context, cx)
             .iter()
-            .filter(|(_, cache)| cache.as_ref().map_or(false, |cache| cache.is_anchor))
+            .filter(|(_, cache)| cache.as_ref().is_some_and(|cache| cache.is_anchor))
             .count(),
         0,
         "Empty messages should not have any cache anchors."
@@ -1083,7 +1083,7 @@ fn test_mark_cache_anchors(cx: &mut App) {
     assert_eq!(
         messages_cache(&context, cx)
             .iter()
-            .filter(|(_, cache)| cache.as_ref().map_or(false, |cache| cache.is_anchor))
+            .filter(|(_, cache)| cache.as_ref().is_some_and(|cache| cache.is_anchor))
             .count(),
         0,
         "Messages should not be marked for cache before going over the token minimum."
@@ -1098,7 +1098,7 @@ fn test_mark_cache_anchors(cx: &mut App) {
     assert_eq!(
         messages_cache(&context, cx)
             .iter()
-            .map(|(_, cache)| cache.as_ref().map_or(false, |cache| cache.is_anchor))
+            .map(|(_, cache)| cache.as_ref().is_some_and(|cache| cache.is_anchor))
             .collect::<Vec<bool>>(),
         vec![true, true, false],
         "Last message should not be an anchor on speculative request."
@@ -1116,7 +1116,7 @@ fn test_mark_cache_anchors(cx: &mut App) {
     assert_eq!(
         messages_cache(&context, cx)
             .iter()
-            .map(|(_, cache)| cache.as_ref().map_or(false, |cache| cache.is_anchor))
+            .map(|(_, cache)| cache.as_ref().is_some_and(|cache| cache.is_anchor))
             .collect::<Vec<bool>>(),
         vec![false, true, true, false],
         "Most recent message should also be cached if not a speculative request."

crates/assistant_context/src/context_store.rs

@@ -789,7 +789,7 @@ impl ContextStore {
         let fs = self.fs.clone();
         cx.spawn(async move |this, cx| {
             pub static ZED_STATELESS: LazyLock<bool> =
-                LazyLock::new(|| std::env::var("ZED_STATELESS").map_or(false, |v| !v.is_empty()));
+                LazyLock::new(|| std::env::var("ZED_STATELESS").is_ok_and(|v| !v.is_empty()));
             if *ZED_STATELESS {
                 return Ok(());
             }

crates/assistant_slash_commands/src/context_server_command.rs

@@ -62,9 +62,10 @@ impl SlashCommand for ContextServerSlashCommand {
     }
 
     fn requires_argument(&self) -> bool {
-        self.prompt.arguments.as_ref().map_or(false, |args| {
-            args.iter().any(|arg| arg.required == Some(true))
-        })
+        self.prompt
+            .arguments
+            .as_ref()
+            .is_some_and(|args| args.iter().any(|arg| arg.required == Some(true)))
     }
 
     fn complete_argument(

crates/assistant_slash_commands/src/diagnostics_command.rs

@@ -61,7 +61,7 @@ impl DiagnosticsSlashCommand {
                         snapshot: worktree.snapshot(),
                         include_ignored: worktree
                             .root_entry()
-                            .map_or(false, |entry| entry.is_ignored),
+                            .is_some_and(|entry| entry.is_ignored),
                         include_root_name: true,
                         candidates: project::Candidates::Entries,
                     }

crates/assistant_slash_commands/src/file_command.rs

@@ -92,7 +92,7 @@ impl FileSlashCommand {
                         snapshot: worktree.snapshot(),
                         include_ignored: worktree
                             .root_entry()
-                            .map_or(false, |entry| entry.is_ignored),
+                            .is_some_and(|entry| entry.is_ignored),
                         include_root_name: true,
                         candidates: project::Candidates::Entries,
                     }
@@ -536,7 +536,7 @@ mod custom_path_matcher {
             let path_str = path.to_string_lossy();
             let separator = std::path::MAIN_SEPARATOR_STR;
             if path_str.ends_with(separator) {
-                return false;
+                false
             } else {
                 self.glob.is_match(path_str.to_string() + separator)
             }

crates/assistant_tools/src/assistant_tools.rs

@@ -86,7 +86,7 @@ fn register_web_search_tool(registry: &Entity<LanguageModelRegistry>, cx: &mut A
     let using_zed_provider = registry
         .read(cx)
         .default_model()
-        .map_or(false, |default| default.is_provided_by_zed());
+        .is_some_and(|default| default.is_provided_by_zed());
     if using_zed_provider {
         ToolRegistry::global(cx).register_tool(WebSearchTool);
     } else {

crates/assistant_tools/src/edit_agent/evals.rs

@@ -1586,7 +1586,7 @@ impl EditAgentTest {
         let has_system_prompt = eval
             .conversation
             .first()
-            .map_or(false, |msg| msg.role == Role::System);
+            .is_some_and(|msg| msg.role == Role::System);
         let messages = if has_system_prompt {
             eval.conversation
         } else {

crates/assistant_tools/src/read_file_tool.rs

@@ -201,7 +201,7 @@ impl Tool for ReadFileTool {
                 buffer
                     .file()
                     .as_ref()
-                    .map_or(true, |file| !file.disk_state().exists())
+                    .is_none_or(|file| !file.disk_state().exists())
             })? {
                 anyhow::bail!("{file_path} not found");
             }

crates/assistant_tools/src/terminal_tool.rs

@@ -387,7 +387,7 @@ fn working_dir(
     let project = project.read(cx);
     let cd = &input.cd;
 
-    if cd == "." || cd == "" {
+    if cd == "." || cd.is_empty() {
         // Accept "." or "" as meaning "the one worktree" if we only have one worktree.
         let mut worktrees = project.worktrees(cx);
 
@@ -412,10 +412,8 @@ fn working_dir(
             {
                 return Ok(Some(input_path.into()));
             }
-        } else {
-            if let Some(worktree) = project.worktree_for_root_name(cd, cx) {
-                return Ok(Some(worktree.read(cx).abs_path().to_path_buf()));
-            }
+        } else if let Some(worktree) = project.worktree_for_root_name(cd, cx) {
+            return Ok(Some(worktree.read(cx).abs_path().to_path_buf()));
         }
 
         anyhow::bail!("`cd` directory {cd:?} was not in any of the project's worktrees.");

crates/bedrock/src/bedrock.rs

@@ -54,11 +54,7 @@ pub async fn stream_completion(
         )])));
     }
 
-    if request
-        .tools
-        .as_ref()
-        .map_or(false, |t| !t.tools.is_empty())
-    {
+    if request.tools.as_ref().is_some_and(|t| !t.tools.is_empty()) {
         response = response.set_tool_config(request.tools);
     }
 

crates/call/src/call_impl/mod.rs

@@ -147,7 +147,7 @@ impl ActiveCall {
             let mut incoming_call = this.incoming_call.0.borrow_mut();
             if incoming_call
                 .as_ref()
-                .map_or(false, |call| call.room_id == envelope.payload.room_id)
+                .is_some_and(|call| call.room_id == envelope.payload.room_id)
             {
                 incoming_call.take();
             }

crates/call/src/call_impl/participant.rs

@@ -64,7 +64,7 @@ pub struct RemoteParticipant {
 
 impl RemoteParticipant {
     pub fn has_video_tracks(&self) -> bool {
-        return !self.video_tracks.is_empty();
+        !self.video_tracks.is_empty()
     }
 
     pub fn can_write(&self) -> bool {

crates/call/src/call_impl/room.rs

@@ -939,8 +939,7 @@ impl Room {
                                 self.client.user_id()
                             )
                         })?;
-                if self.live_kit.as_ref().map_or(true, |kit| kit.deafened) && publication.is_audio()
-                {
+                if self.live_kit.as_ref().is_none_or(|kit| kit.deafened) && publication.is_audio() {
                     publication.set_enabled(false, cx);
                 }
                 match track {
@@ -1174,7 +1173,7 @@ impl Room {
             this.update(cx, |this, cx| {
                 this.shared_projects.insert(project.downgrade());
                 let active_project = this.local_participant.active_project.as_ref();
-                if active_project.map_or(false, |location| *location == project) {
+                if active_project.is_some_and(|location| *location == project) {
                     this.set_location(Some(&project), cx)
                 } else {
                     Task::ready(Ok(()))
@@ -1247,9 +1246,9 @@ impl Room {
     }
 
     pub fn is_sharing_screen(&self) -> bool {
-        self.live_kit.as_ref().map_or(false, |live_kit| {
-            !matches!(live_kit.screen_track, LocalTrack::None)
-        })
+        self.live_kit
+            .as_ref()
+            .is_some_and(|live_kit| !matches!(live_kit.screen_track, LocalTrack::None))
     }
 
     pub fn shared_screen_id(&self) -> Option<u64> {
@@ -1262,13 +1261,13 @@ impl Room {
     }
 
     pub fn is_sharing_mic(&self) -> bool {
-        self.live_kit.as_ref().map_or(false, |live_kit| {
-            !matches!(live_kit.microphone_track, LocalTrack::None)
-        })
+        self.live_kit
+            .as_ref()
+            .is_some_and(|live_kit| !matches!(live_kit.microphone_track, LocalTrack::None))
     }
 
     pub fn is_muted(&self) -> bool {
-        self.live_kit.as_ref().map_or(false, |live_kit| {
+        self.live_kit.as_ref().is_some_and(|live_kit| {
             matches!(live_kit.microphone_track, LocalTrack::None)
                 || live_kit.muted_by_user
                 || live_kit.deafened
@@ -1278,13 +1277,13 @@ impl Room {
     pub fn muted_by_user(&self) -> bool {
         self.live_kit
             .as_ref()
-            .map_or(false, |live_kit| live_kit.muted_by_user)
+            .is_some_and(|live_kit| live_kit.muted_by_user)
     }
 
     pub fn is_speaking(&self) -> bool {
         self.live_kit
             .as_ref()
-            .map_or(false, |live_kit| live_kit.speaking)
+            .is_some_and(|live_kit| live_kit.speaking)
     }
 
     pub fn is_deafened(&self) -> Option<bool> {

crates/channel/src/channel_chat.rs

@@ -340,7 +340,7 @@ impl ChannelChat {
                         return ControlFlow::Break(
                             if cursor
                                 .item()
-                                .map_or(false, |message| message.id == message_id)
+                                .is_some_and(|message| message.id == message_id)
                             {
                                 Some(cursor.start().1.0)
                             } else {
@@ -362,7 +362,7 @@ impl ChannelChat {
         if let ChannelMessageId::Saved(latest_message_id) = self.messages.summary().max_id
             && self
                 .last_acknowledged_id
-                .map_or(true, |acknowledged_id| acknowledged_id < latest_message_id)
+                .is_none_or(|acknowledged_id| acknowledged_id < latest_message_id)
         {
             self.rpc
                 .send(proto::AckChannelMessage {
@@ -612,7 +612,7 @@ impl ChannelChat {
                 while let Some(message) = old_cursor.item() {
                     let message_ix = old_cursor.start().1.0;
                     if nonces.contains(&message.nonce) {
-                        if ranges.last().map_or(false, |r| r.end == message_ix) {
+                        if ranges.last().is_some_and(|r| r.end == message_ix) {
                             ranges.last_mut().unwrap().end += 1;
                         } else {
                             ranges.push(message_ix..message_ix + 1);

crates/channel/src/channel_store.rs

@@ -568,16 +568,14 @@ impl ChannelStore {
         self.channel_index
             .by_id()
             .get(&channel_id)
-            .map_or(false, |channel| channel.is_root_channel())
+            .is_some_and(|channel| channel.is_root_channel())
     }
 
     pub fn is_public_channel(&self, channel_id: ChannelId) -> bool {
         self.channel_index
             .by_id()
             .get(&channel_id)
-            .map_or(false, |channel| {
-                channel.visibility == ChannelVisibility::Public
-            })
+            .is_some_and(|channel| channel.visibility == ChannelVisibility::Public)
     }
 
     pub fn channel_capability(&self, channel_id: ChannelId) -> Capability {

crates/cli/src/main.rs

@@ -363,7 +363,7 @@ fn anonymous_fd(path: &str) -> Option<fs::File> {
 
         let fd: fd::RawFd = fd_str.parse().ok()?;
         let file = unsafe { fs::File::from_raw_fd(fd) };
-        return Some(file);
+        Some(file)
     }
     #[cfg(any(target_os = "macos", target_os = "freebsd"))]
     {
@@ -381,13 +381,13 @@ fn anonymous_fd(path: &str) -> Option<fs::File> {
         }
         let fd: fd::RawFd = fd_str.parse().ok()?;
         let file = unsafe { fs::File::from_raw_fd(fd) };
-        return Some(file);
+        Some(file)
     }
     #[cfg(not(any(target_os = "linux", target_os = "macos", target_os = "freebsd")))]
     {
         _ = path;
         // not implemented for bsd, windows. Could be, but isn't yet
-        return None;
+        None
     }
 }
 
@@ -586,7 +586,7 @@ mod flatpak {
 
     pub fn set_bin_if_no_escape(mut args: super::Args) -> super::Args {
         if env::var(NO_ESCAPE_ENV_NAME).is_ok()
-            && env::var("FLATPAK_ID").map_or(false, |id| id.starts_with("dev.zed.Zed"))
+            && env::var("FLATPAK_ID").is_ok_and(|id| id.starts_with("dev.zed.Zed"))
             && args.zed.is_none()
         {
             args.zed = Some("/app/libexec/zed-editor".into());

crates/client/src/client.rs

@@ -76,7 +76,7 @@ pub static ZED_APP_PATH: LazyLock<Option<PathBuf>> =
     LazyLock::new(|| std::env::var("ZED_APP_PATH").ok().map(PathBuf::from));
 
 pub static ZED_ALWAYS_ACTIVE: LazyLock<bool> =
-    LazyLock::new(|| std::env::var("ZED_ALWAYS_ACTIVE").map_or(false, |e| !e.is_empty()));
+    LazyLock::new(|| std::env::var("ZED_ALWAYS_ACTIVE").is_ok_and(|e| !e.is_empty()));
 
 pub const INITIAL_RECONNECTION_DELAY: Duration = Duration::from_millis(500);
 pub const MAX_RECONNECTION_DELAY: Duration = Duration::from_secs(30);

crates/client/src/user.rs

@@ -848,7 +848,7 @@ impl UserStore {
 
     pub fn has_accepted_terms_of_service(&self) -> bool {
         self.accepted_tos_at
-            .map_or(false, |accepted_tos_at| accepted_tos_at.is_some())
+            .is_some_and(|accepted_tos_at| accepted_tos_at.is_some())
     }
 
     pub fn accept_terms_of_service(&self, cx: &Context<Self>) -> Task<Result<()>> {

crates/cloud_api_client/src/cloud_api_client.rs

@@ -205,12 +205,12 @@ impl CloudApiClient {
             let mut body = String::new();
             response.body_mut().read_to_string(&mut body).await?;
             if response.status() == StatusCode::UNAUTHORIZED {
-                return Ok(false);
+                Ok(false)
             } else {
-                return Err(anyhow!(
+                Err(anyhow!(
                     "Failed to get authenticated user.\nStatus: {:?}\nBody: {body}",
                     response.status()
-                ));
+                ))
             }
         }
     }

crates/collab/src/tests/random_project_collaboration_tests.rs

@@ -304,7 +304,7 @@ impl RandomizedTest for ProjectCollaborationTest {
                                         let worktree = worktree.read(cx);
                                         worktree.is_visible()
                                             && worktree.entries(false, 0).any(|e| e.is_file())
-                                            && worktree.root_entry().map_or(false, |e| e.is_dir())
+                                            && worktree.root_entry().is_some_and(|e| e.is_dir())
                                     })
                                     .choose(rng)
                             });

crates/collab_ui/src/chat_panel.rs

@@ -890,7 +890,7 @@ impl ChatPanel {
                         this.highlighted_message = Some((highlight_message_id, task));
                     }
 
-                    if this.active_chat.as_ref().map_or(false, |(c, _)| *c == chat) {
+                    if this.active_chat.as_ref().is_some_and(|(c, _)| *c == chat) {
                         this.message_list.scroll_to(ListOffset {
                             item_ix,
                             offset_in_item: px(0.0),
@@ -1186,7 +1186,7 @@ impl Panel for ChatPanel {
                 let is_in_call = ActiveCall::global(cx)
                     .read(cx)
                     .room()
-                    .map_or(false, |room| room.read(cx).contains_guests());
+                    .is_some_and(|room| room.read(cx).contains_guests());
 
                 self.active || is_in_call
             }

crates/collab_ui/src/collab_panel.rs

@@ -664,9 +664,7 @@ impl CollabPanel {
 
                 let has_children = channel_store
                     .channel_at_index(mat.candidate_id + 1)
-                    .map_or(false, |next_channel| {
-                        next_channel.parent_path.ends_with(&[channel.id])
-                    });
+                    .is_some_and(|next_channel| next_channel.parent_path.ends_with(&[channel.id]));
 
                 match &self.channel_editing_state {
                     Some(ChannelEditingState::Create {
@@ -1125,7 +1123,7 @@ impl CollabPanel {
     }
 
     fn has_subchannels(&self, ix: usize) -> bool {
-        self.entries.get(ix).map_or(false, |entry| {
+        self.entries.get(ix).is_some_and(|entry| {
             if let ListEntry::Channel { has_children, .. } = entry {
                 *has_children
             } else {

crates/collab_ui/src/notification_panel.rs

@@ -497,7 +497,7 @@ impl NotificationPanel {
                 panel.is_scrolled_to_bottom()
                     && panel
                         .active_chat()
-                        .map_or(false, |chat| chat.read(cx).channel_id.0 == *channel_id)
+                        .is_some_and(|chat| chat.read(cx).channel_id.0 == *channel_id)
             } else {
                 false
             };

crates/credentials_provider/src/credentials_provider.rs

@@ -19,7 +19,7 @@ use release_channel::ReleaseChannel;
 /// Only works in development. Setting this environment variable in other
 /// release channels is a no-op.
 static ZED_DEVELOPMENT_USE_KEYCHAIN: LazyLock<bool> = LazyLock::new(|| {
-    std::env::var("ZED_DEVELOPMENT_USE_KEYCHAIN").map_or(false, |value| !value.is_empty())
+    std::env::var("ZED_DEVELOPMENT_USE_KEYCHAIN").is_ok_and(|value| !value.is_empty())
 });
 
 /// A provider for credentials.

crates/dap_adapters/src/codelldb.rs

@@ -385,7 +385,7 @@ impl DebugAdapter for CodeLldbDebugAdapter {
                     && let Some(source_languages) = config.get("sourceLanguages").filter(|value| {
                         value
                             .as_array()
-                            .map_or(false, |array| array.iter().all(Value::is_string))
+                            .is_some_and(|array| array.iter().all(Value::is_string))
                     })
                 {
                     let ret = vec![

crates/db/src/db.rs

@@ -37,7 +37,7 @@ const FALLBACK_DB_NAME: &str = "FALLBACK_MEMORY_DB";
 const DB_FILE_NAME: &str = "db.sqlite";
 
 pub static ZED_STATELESS: LazyLock<bool> =
-    LazyLock::new(|| env::var("ZED_STATELESS").map_or(false, |v| !v.is_empty()));
+    LazyLock::new(|| env::var("ZED_STATELESS").is_ok_and(|v| !v.is_empty()));
 
 pub static ALL_FILE_DB_FAILED: LazyLock<AtomicBool> = LazyLock::new(|| AtomicBool::new(false));
 

crates/db/src/kvp.rs

@@ -20,7 +20,7 @@ pub trait Dismissable {
         KEY_VALUE_STORE
             .read_kvp(Self::KEY)
             .log_err()
-            .map_or(false, |s| s.is_some())
+            .is_some_and(|s| s.is_some())
     }
 
     fn set_dismissed(is_dismissed: bool, cx: &mut App) {

crates/debugger_tools/src/dap_log.rs

@@ -392,7 +392,7 @@ impl LogStore {
                         session.label(),
                         session
                             .adapter_client()
-                            .map_or(false, |client| client.has_adapter_logs()),
+                            .is_some_and(|client| client.has_adapter_logs()),
                     )
                 });
 

crates/debugger_ui/src/session/running.rs

@@ -414,7 +414,7 @@ pub(crate) fn new_debugger_pane(
                     .and_then(|item| item.downcast::<SubView>());
                 let is_hovered = as_subview
                     .as_ref()
-                    .map_or(false, |item| item.read(cx).hovered);
+                    .is_some_and(|item| item.read(cx).hovered);
 
                 h_flex()
                     .track_focus(&focus_handle)
@@ -427,7 +427,6 @@ pub(crate) fn new_debugger_pane(
                     .bg(cx.theme().colors().tab_bar_background)
                     .on_action(|_: &menu::Cancel, window, cx| {
                         if cx.stop_active_drag(window) {
-                            return;
                         } else {
                             cx.propagate();
                         }
@@ -449,7 +448,7 @@ pub(crate) fn new_debugger_pane(
                             .children(pane.items().enumerate().map(|(ix, item)| {
                                 let selected = active_pane_item
                                     .as_ref()
-                                    .map_or(false, |active| active.item_id() == item.item_id());
+                                    .is_some_and(|active| active.item_id() == item.item_id());
                                 let deemphasized = !pane.has_focus(window, cx);
                                 let item_ = item.boxed_clone();
                                 div()

crates/debugger_ui/src/session/running/breakpoint_list.rs

@@ -528,7 +528,7 @@ impl BreakpointList {
             cx.background_executor()
                 .spawn(async move { KEY_VALUE_STORE.write_kvp(key, value?).await })
         } else {
-            return Task::ready(Result::Ok(()));
+            Task::ready(Result::Ok(()))
         }
     }
 

crates/diagnostics/src/diagnostic_renderer.rs

@@ -287,15 +287,13 @@ impl DiagnosticBlock {
                     }
                 }
             }
-        } else {
-            if let Some(diagnostic) = editor
-                .snapshot(window, cx)
-                .buffer_snapshot
-                .diagnostic_group(buffer_id, group_id)
-                .nth(ix)
-            {
-                Self::jump_to(editor, diagnostic.range, window, cx)
-            }
+        } else if let Some(diagnostic) = editor
+            .snapshot(window, cx)
+            .buffer_snapshot
+            .diagnostic_group(buffer_id, group_id)
+            .nth(ix)
+        {
+            Self::jump_to(editor, diagnostic.range, window, cx)
         };
     }
 

crates/diagnostics/src/diagnostics.rs

@@ -383,12 +383,10 @@ impl ProjectDiagnosticsEditor {
             } else {
                 self.update_all_diagnostics(false, window, cx);
             }
+        } else if self.update_excerpts_task.is_some() {
+            self.update_excerpts_task = None;
         } else {
-            if self.update_excerpts_task.is_some() {
-                self.update_excerpts_task = None;
-            } else {
-                self.update_all_diagnostics(false, window, cx);
-            }
+            self.update_all_diagnostics(false, window, cx);
         }
         cx.notify();
     }
@@ -542,7 +540,7 @@ impl ProjectDiagnosticsEditor {
                     return true;
                 }
                 this.diagnostics.insert(buffer_id, diagnostics.clone());
-                return false;
+                false
             })?;
             if unchanged {
                 return Ok(());

crates/docs_preprocessor/src/main.rs

@@ -295,7 +295,7 @@ fn dump_all_gpui_actions() -> Vec<ActionDef> {
 
     actions.sort_by_key(|a| a.name);
 
-    return actions;
+    actions
 }
 
 fn handle_postprocessing() -> Result<()> {

crates/edit_prediction_button/src/edit_prediction_button.rs

@@ -185,7 +185,7 @@ impl Render for EditPredictionButton {
                 let this = cx.entity();
                 let fs = self.fs.clone();
 
-                return div().child(
+                div().child(
                     PopoverMenu::new("supermaven")
                         .menu(move |window, cx| match &status {
                             SupermavenButtonStatus::NeedsActivation(activate_url) => {
@@ -230,7 +230,7 @@ impl Render for EditPredictionButton {
                             },
                         )
                         .with_handle(self.popover_menu_handle.clone()),
-                );
+                )
             }
 
             EditPredictionProvider::Zed => {
@@ -343,7 +343,7 @@ impl Render for EditPredictionButton {
                 let is_refreshing = self
                     .edit_prediction_provider
                     .as_ref()
-                    .map_or(false, |provider| provider.is_refreshing(cx));
+                    .is_some_and(|provider| provider.is_refreshing(cx));
 
                 if is_refreshing {
                     popover_menu = popover_menu.trigger(

crates/editor/src/clangd_ext.rs

@@ -13,7 +13,7 @@ use crate::{Editor, SwitchSourceHeader, element::register_action};
 use project::lsp_store::clangd_ext::CLANGD_SERVER_NAME;
 
 fn is_c_language(language: &Language) -> bool {
-    return language.name() == "C++".into() || language.name() == "C".into();
+    language.name() == "C++".into() || language.name() == "C".into()
 }
 
 pub fn switch_source_header(

crates/editor/src/code_context_menus.rs

@@ -1111,10 +1111,8 @@ impl CompletionsMenu {
             let query_start_doesnt_match_split_words = query_start_lower
                 .map(|query_char| {
                     !split_words(&string_match.string).any(|word| {
-                        word.chars()
-                            .next()
-                            .and_then(|c| c.to_lowercase().next())
-                            .map_or(false, |word_char| word_char == query_char)
+                        word.chars().next().and_then(|c| c.to_lowercase().next())
+                            == Some(query_char)
                     })
                 })
                 .unwrap_or(false);

crates/editor/src/display_map.rs

@@ -991,7 +991,7 @@ impl DisplaySnapshot {
             if let Some(severity) = chunk.diagnostic_severity.filter(|severity| {
                 self.diagnostics_max_severity
                     .into_lsp()
-                    .map_or(false, |max_severity| severity <= &max_severity)
+                    .is_some_and(|max_severity| severity <= &max_severity)
             }) {
                 if chunk.is_unnecessary {
                     diagnostic_highlight.fade_out = Some(editor_style.unnecessary_code_fade);

crates/editor/src/display_map/block_map.rs

@@ -528,10 +528,7 @@ impl BlockMap {
             if let Some(transform) = cursor.item()
                 && transform.summary.input_rows > 0
                 && cursor.end() == old_start
-                && transform
-                    .block
-                    .as_ref()
-                    .map_or(true, |b| !b.is_replacement())
+                && transform.block.as_ref().is_none_or(|b| !b.is_replacement())
             {
                 // Preserve the transform (push and next)
                 new_transforms.push(transform.clone(), &());
@@ -539,7 +536,7 @@ impl BlockMap {
 
                 // Preserve below blocks at end of edit
                 while let Some(transform) = cursor.item() {
-                    if transform.block.as_ref().map_or(false, |b| b.place_below()) {
+                    if transform.block.as_ref().is_some_and(|b| b.place_below()) {
                         new_transforms.push(transform.clone(), &());
                         cursor.next();
                     } else {
@@ -606,7 +603,7 @@ impl BlockMap {
 
             // Discard below blocks at the end of the edit. They'll be reconstructed.
             while let Some(transform) = cursor.item() {
-                if transform.block.as_ref().map_or(false, |b| b.place_below()) {
+                if transform.block.as_ref().is_some_and(|b| b.place_below()) {
                     cursor.next();
                 } else {
                     break;
@@ -1328,7 +1325,7 @@ impl BlockSnapshot {
         let Dimensions(output_start, input_start, _) = cursor.start();
         let overshoot = if cursor
             .item()
-            .map_or(false, |transform| transform.block.is_none())
+            .is_some_and(|transform| transform.block.is_none())
         {
             start_row.0 - output_start.0
         } else {
@@ -1358,7 +1355,7 @@ impl BlockSnapshot {
                         && transform
                             .block
                             .as_ref()
-                            .map_or(false, |block| block.height() > 0))
+                            .is_some_and(|block| block.height() > 0))
                 {
                     break;
                 }
@@ -1511,7 +1508,7 @@ impl BlockSnapshot {
     pub(super) fn is_block_line(&self, row: BlockRow) -> bool {
         let mut cursor = self.transforms.cursor::<Dimensions<BlockRow, WrapRow>>(&());
         cursor.seek(&row, Bias::Right);
-        cursor.item().map_or(false, |t| t.block.is_some())
+        cursor.item().is_some_and(|t| t.block.is_some())
     }
 
     pub(super) fn is_folded_buffer_header(&self, row: BlockRow) -> bool {
@@ -1529,11 +1526,11 @@ impl BlockSnapshot {
             .make_wrap_point(Point::new(row.0, 0), Bias::Left);
         let mut cursor = self.transforms.cursor::<Dimensions<WrapRow, BlockRow>>(&());
         cursor.seek(&WrapRow(wrap_point.row()), Bias::Right);
-        cursor.item().map_or(false, |transform| {
+        cursor.item().is_some_and(|transform| {
             transform
                 .block
                 .as_ref()
-                .map_or(false, |block| block.is_replacement())
+                .is_some_and(|block| block.is_replacement())
         })
     }
 
@@ -1653,7 +1650,7 @@ impl BlockChunks<'_> {
             if transform
                 .block
                 .as_ref()
-                .map_or(false, |block| block.height() == 0)
+                .is_some_and(|block| block.height() == 0)
             {
                 self.transforms.next();
             } else {
@@ -1664,7 +1661,7 @@ impl BlockChunks<'_> {
         if self
             .transforms
             .item()
-            .map_or(false, |transform| transform.block.is_none())
+            .is_some_and(|transform| transform.block.is_none())
         {
             let start_input_row = self.transforms.start().1.0;
             let start_output_row = self.transforms.start().0.0;
@@ -1774,7 +1771,7 @@ impl Iterator for BlockRows<'_> {
                 if transform
                     .block
                     .as_ref()
-                    .map_or(false, |block| block.height() == 0)
+                    .is_some_and(|block| block.height() == 0)
                 {
                     self.transforms.next();
                 } else {
@@ -1786,7 +1783,7 @@ impl Iterator for BlockRows<'_> {
             if transform
                 .block
                 .as_ref()
-                .map_or(true, |block| block.is_replacement())
+                .is_none_or(|block| block.is_replacement())
             {
                 self.input_rows.seek(self.transforms.start().1.0);
             }

crates/editor/src/display_map/fold_map.rs

@@ -491,14 +491,14 @@ impl FoldMap {
 
                 while folds
                     .peek()
-                    .map_or(false, |(_, fold_range)| fold_range.start < edit.new.end)
+                    .is_some_and(|(_, fold_range)| fold_range.start < edit.new.end)
                 {
                     let (fold, mut fold_range) = folds.next().unwrap();
                     let sum = new_transforms.summary();
 
                     assert!(fold_range.start.0 >= sum.input.len);
 
-                    while folds.peek().map_or(false, |(next_fold, next_fold_range)| {
+                    while folds.peek().is_some_and(|(next_fold, next_fold_range)| {
                         next_fold_range.start < fold_range.end
                             || (next_fold_range.start == fold_range.end
                                 && fold.placeholder.merge_adjacent
@@ -575,14 +575,14 @@ impl FoldMap {
 
                 for mut edit in inlay_edits {
                     old_transforms.seek(&edit.old.start, Bias::Left);
-                    if old_transforms.item().map_or(false, |t| t.is_fold()) {
+                    if old_transforms.item().is_some_and(|t| t.is_fold()) {
                         edit.old.start = old_transforms.start().0;
                     }
                     let old_start =
                         old_transforms.start().1.0 + (edit.old.start - old_transforms.start().0).0;
 
                     old_transforms.seek_forward(&edit.old.end, Bias::Right);
-                    if old_transforms.item().map_or(false, |t| t.is_fold()) {
+                    if old_transforms.item().is_some_and(|t| t.is_fold()) {
                         old_transforms.next();
                         edit.old.end = old_transforms.start().0;
                     }
@@ -590,14 +590,14 @@ impl FoldMap {
                         old_transforms.start().1.0 + (edit.old.end - old_transforms.start().0).0;
 
                     new_transforms.seek(&edit.new.start, Bias::Left);
-                    if new_transforms.item().map_or(false, |t| t.is_fold()) {
+                    if new_transforms.item().is_some_and(|t| t.is_fold()) {
                         edit.new.start = new_transforms.start().0;
                     }
                     let new_start =
                         new_transforms.start().1.0 + (edit.new.start - new_transforms.start().0).0;
 
                     new_transforms.seek_forward(&edit.new.end, Bias::Right);
-                    if new_transforms.item().map_or(false, |t| t.is_fold()) {
+                    if new_transforms.item().is_some_and(|t| t.is_fold()) {
                         new_transforms.next();
                         edit.new.end = new_transforms.start().0;
                     }
@@ -709,7 +709,7 @@ impl FoldSnapshot {
             .transforms
             .cursor::<Dimensions<InlayPoint, FoldPoint>>(&());
         cursor.seek(&point, Bias::Right);
-        if cursor.item().map_or(false, |t| t.is_fold()) {
+        if cursor.item().is_some_and(|t| t.is_fold()) {
             if bias == Bias::Left || point == cursor.start().0 {
                 cursor.start().1
             } else {
@@ -788,7 +788,7 @@ impl FoldSnapshot {
         let inlay_offset = self.inlay_snapshot.to_inlay_offset(buffer_offset);
         let mut cursor = self.transforms.cursor::<InlayOffset>(&());
         cursor.seek(&inlay_offset, Bias::Right);
-        cursor.item().map_or(false, |t| t.placeholder.is_some())
+        cursor.item().is_some_and(|t| t.placeholder.is_some())
     }
 
     pub fn is_line_folded(&self, buffer_row: MultiBufferRow) -> bool {
@@ -839,7 +839,7 @@ impl FoldSnapshot {
 
         let inlay_end = if transform_cursor
             .item()
-            .map_or(true, |transform| transform.is_fold())
+            .is_none_or(|transform| transform.is_fold())
         {
             inlay_start
         } else if range.end < transform_end.0 {
@@ -1348,7 +1348,7 @@ impl FoldChunks<'_> {
         let inlay_end = if self
             .transform_cursor
             .item()
-            .map_or(true, |transform| transform.is_fold())
+            .is_none_or(|transform| transform.is_fold())
         {
             inlay_start
         } else if range.end < transform_end.0 {
@@ -1463,7 +1463,7 @@ impl FoldOffset {
             .transforms
             .cursor::<Dimensions<FoldOffset, TransformSummary>>(&());
         cursor.seek(&self, Bias::Right);
-        let overshoot = if cursor.item().map_or(true, |t| t.is_fold()) {
+        let overshoot = if cursor.item().is_none_or(|t| t.is_fold()) {
             Point::new(0, (self.0 - cursor.start().0.0) as u32)
         } else {
             let inlay_offset = cursor.start().1.input.len + self.0 - cursor.start().0.0;

crates/editor/src/display_map/inlay_map.rs

@@ -625,7 +625,7 @@ impl InlayMap {
                 // we can push its remainder.
                 if buffer_edits_iter
                     .peek()
-                    .map_or(true, |edit| edit.old.start >= cursor.end().0)
+                    .is_none_or(|edit| edit.old.start >= cursor.end().0)
                 {
                     let transform_start = new_transforms.summary().input.len;
                     let transform_end =

crates/editor/src/display_map/wrap_map.rs

@@ -74,10 +74,10 @@ impl WrapRows<'_> {
         self.transforms
             .seek(&WrapPoint::new(start_row, 0), Bias::Left);
         let mut input_row = self.transforms.start().1.row();
-        if self.transforms.item().map_or(false, |t| t.is_isomorphic()) {
+        if self.transforms.item().is_some_and(|t| t.is_isomorphic()) {
             input_row += start_row - self.transforms.start().0.row();
         }
-        self.soft_wrapped = self.transforms.item().map_or(false, |t| !t.is_isomorphic());
+        self.soft_wrapped = self.transforms.item().is_some_and(|t| !t.is_isomorphic());
         self.input_buffer_rows.seek(input_row);
         self.input_buffer_row = self.input_buffer_rows.next().unwrap();
         self.output_row = start_row;
@@ -603,7 +603,7 @@ impl WrapSnapshot {
             .cursor::<Dimensions<WrapPoint, TabPoint>>(&());
         transforms.seek(&output_start, Bias::Right);
         let mut input_start = TabPoint(transforms.start().1.0);
-        if transforms.item().map_or(false, |t| t.is_isomorphic()) {
+        if transforms.item().is_some_and(|t| t.is_isomorphic()) {
             input_start.0 += output_start.0 - transforms.start().0.0;
         }
         let input_end = self
@@ -634,7 +634,7 @@ impl WrapSnapshot {
         cursor.seek(&WrapPoint::new(row + 1, 0), Bias::Left);
         if cursor
             .item()
-            .map_or(false, |transform| transform.is_isomorphic())
+            .is_some_and(|transform| transform.is_isomorphic())
         {
             let overshoot = row - cursor.start().0.row();
             let tab_row = cursor.start().1.row() + overshoot;
@@ -732,10 +732,10 @@ impl WrapSnapshot {
             .cursor::<Dimensions<WrapPoint, TabPoint>>(&());
         transforms.seek(&WrapPoint::new(start_row, 0), Bias::Left);
         let mut input_row = transforms.start().1.row();
-        if transforms.item().map_or(false, |t| t.is_isomorphic()) {
+        if transforms.item().is_some_and(|t| t.is_isomorphic()) {
             input_row += start_row - transforms.start().0.row();
         }
-        let soft_wrapped = transforms.item().map_or(false, |t| !t.is_isomorphic());
+        let soft_wrapped = transforms.item().is_some_and(|t| !t.is_isomorphic());
         let mut input_buffer_rows = self.tab_snapshot.rows(input_row);
         let input_buffer_row = input_buffer_rows.next().unwrap();
         WrapRows {
@@ -754,7 +754,7 @@ impl WrapSnapshot {
             .cursor::<Dimensions<WrapPoint, TabPoint>>(&());
         cursor.seek(&point, Bias::Right);
         let mut tab_point = cursor.start().1.0;
-        if cursor.item().map_or(false, |t| t.is_isomorphic()) {
+        if cursor.item().is_some_and(|t| t.is_isomorphic()) {
             tab_point += point.0 - cursor.start().0.0;
         }
         TabPoint(tab_point)
@@ -780,7 +780,7 @@ impl WrapSnapshot {
         if bias == Bias::Left {
             let mut cursor = self.transforms.cursor::<WrapPoint>(&());
             cursor.seek(&point, Bias::Right);
-            if cursor.item().map_or(false, |t| !t.is_isomorphic()) {
+            if cursor.item().is_some_and(|t| !t.is_isomorphic()) {
                 point = *cursor.start();
                 *point.column_mut() -= 1;
             }
@@ -901,7 +901,7 @@ impl WrapChunks<'_> {
         let output_end = WrapPoint::new(rows.end, 0);
         self.transforms.seek(&output_start, Bias::Right);
         let mut input_start = TabPoint(self.transforms.start().1.0);
-        if self.transforms.item().map_or(false, |t| t.is_isomorphic()) {
+        if self.transforms.item().is_some_and(|t| t.is_isomorphic()) {
             input_start.0 += output_start.0 - self.transforms.start().0.0;
         }
         let input_end = self
@@ -993,7 +993,7 @@ impl Iterator for WrapRows<'_> {
         self.output_row += 1;
         self.transforms
             .seek_forward(&WrapPoint::new(self.output_row, 0), Bias::Left);
-        if self.transforms.item().map_or(false, |t| t.is_isomorphic()) {
+        if self.transforms.item().is_some_and(|t| t.is_isomorphic()) {
             self.input_buffer_row = self.input_buffer_rows.next().unwrap();
             self.soft_wrapped = false;
         } else {

crates/editor/src/editor.rs

@@ -1429,7 +1429,7 @@ impl SelectionHistory {
         if self
             .undo_stack
             .back()
-            .map_or(true, |e| e.selections != entry.selections)
+            .is_none_or(|e| e.selections != entry.selections)
         {
             self.undo_stack.push_back(entry);
             if self.undo_stack.len() > MAX_SELECTION_HISTORY_LEN {
@@ -1442,7 +1442,7 @@ impl SelectionHistory {
         if self
             .redo_stack
             .back()
-            .map_or(true, |e| e.selections != entry.selections)
+            .is_none_or(|e| e.selections != entry.selections)
         {
             self.redo_stack.push_back(entry);
             if self.redo_stack.len() > MAX_SELECTION_HISTORY_LEN {
@@ -2512,9 +2512,7 @@ impl Editor {
             .context_menu
             .borrow()
             .as_ref()
-            .map_or(false, |context| {
-                matches!(context, CodeContextMenu::Completions(_))
-            });
+            .is_some_and(|context| matches!(context, CodeContextMenu::Completions(_)));
 
         showing_completions
             || self.edit_prediction_requires_modifier()
@@ -2545,7 +2543,7 @@ impl Editor {
                 || binding
                     .keystrokes()
                     .first()
-                    .map_or(false, |keystroke| keystroke.modifiers.modified())
+                    .is_some_and(|keystroke| keystroke.modifiers.modified())
         }))
     }
 
@@ -2941,7 +2939,7 @@ impl Editor {
             return false;
         };
 
-        scope.override_name().map_or(false, |scope_name| {
+        scope.override_name().is_some_and(|scope_name| {
             settings
                 .edit_predictions_disabled_in
                 .iter()
@@ -4033,18 +4031,18 @@ impl Editor {
                             let following_text_allows_autoclose = snapshot
                                 .chars_at(selection.start)
                                 .next()
-                                .map_or(true, |c| scope.should_autoclose_before(c));
+                                .is_none_or(|c| scope.should_autoclose_before(c));
 
                             let preceding_text_allows_autoclose = selection.start.column == 0
-                                || snapshot.reversed_chars_at(selection.start).next().map_or(
-                                    true,
-                                    |c| {
+                                || snapshot
+                                    .reversed_chars_at(selection.start)
+                                    .next()
+                                    .is_none_or(|c| {
                                         bracket_pair.start != bracket_pair.end
                                             || !snapshot
                                                 .char_classifier_at(selection.start)
                                                 .is_word(c)
-                                    },
-                                );
+                                    });
 
                             let is_closing_quote = if bracket_pair.end == bracket_pair.start
                                 && bracket_pair.start.len() == 1
@@ -4185,7 +4183,7 @@ impl Editor {
             if !self.linked_edit_ranges.is_empty() {
                 let start_anchor = snapshot.anchor_before(selection.start);
 
-                let is_word_char = text.chars().next().map_or(true, |char| {
+                let is_word_char = text.chars().next().is_none_or(|char| {
                     let classifier = snapshot
                         .char_classifier_at(start_anchor.to_offset(&snapshot))
                         .ignore_punctuation(true);
@@ -5427,11 +5425,11 @@ impl Editor {
 
         let sort_completions = provider
             .as_ref()
-            .map_or(false, |provider| provider.sort_completions());
+            .is_some_and(|provider| provider.sort_completions());
 
         let filter_completions = provider
             .as_ref()
-            .map_or(true, |provider| provider.filter_completions());
+            .is_none_or(|provider| provider.filter_completions());
 
         let trigger_kind = match trigger {
             Some(trigger) if buffer.read(cx).completion_triggers().contains(trigger) => {
@@ -5537,7 +5535,7 @@ impl Editor {
 
         let skip_digits = query
             .as_ref()
-            .map_or(true, |query| !query.chars().any(|c| c.is_digit(10)));
+            .is_none_or(|query| !query.chars().any(|c| c.is_digit(10)));
 
         let (mut words, provider_responses) = match &provider {
             Some(provider) => {
@@ -5971,7 +5969,7 @@ impl Editor {
         let show_new_completions_on_confirm = completion
             .confirm
             .as_ref()
-            .map_or(false, |confirm| confirm(intent, window, cx));
+            .is_some_and(|confirm| confirm(intent, window, cx));
         if show_new_completions_on_confirm {
             self.show_completions(&ShowCompletions { trigger: None }, window, cx);
         }
@@ -6103,10 +6101,10 @@ impl Editor {
             let spawn_straight_away = quick_launch
                 && resolved_tasks
                     .as_ref()
-                    .map_or(false, |tasks| tasks.templates.len() == 1)
+                    .is_some_and(|tasks| tasks.templates.len() == 1)
                 && code_actions
                     .as_ref()
-                    .map_or(true, |actions| actions.is_empty())
+                    .is_none_or(|actions| actions.is_empty())
                 && debug_scenarios.is_empty();
 
             editor.update_in(cx, |editor, window, cx| {
@@ -6720,9 +6718,9 @@ impl Editor {
 
                     let buffer_id = cursor_position.buffer_id;
                     let buffer = this.buffer.read(cx);
-                    if !buffer
+                    if buffer
                         .text_anchor_for_position(cursor_position, cx)
-                        .map_or(false, |(buffer, _)| buffer == cursor_buffer)
+                        .is_none_or(|(buffer, _)| buffer != cursor_buffer)
                     {
                         return;
                     }
@@ -6972,9 +6970,7 @@ impl Editor {
             || self
                 .quick_selection_highlight_task
                 .as_ref()
-                .map_or(true, |(prev_anchor_range, _)| {
-                    prev_anchor_range != &query_range
-                })
+                .is_none_or(|(prev_anchor_range, _)| prev_anchor_range != &query_range)
         {
             let multi_buffer_visible_start = self
                 .scroll_manager
@@ -7003,9 +6999,7 @@ impl Editor {
             || self
                 .debounced_selection_highlight_task
                 .as_ref()
-                .map_or(true, |(prev_anchor_range, _)| {
-                    prev_anchor_range != &query_range
-                })
+                .is_none_or(|(prev_anchor_range, _)| prev_anchor_range != &query_range)
         {
             let multi_buffer_start = multi_buffer_snapshot
                 .anchor_before(0)
@@ -7140,9 +7134,7 @@ impl Editor {
             && self
                 .edit_prediction_provider
                 .as_ref()
-                .map_or(false, |provider| {
-                    provider.provider.show_completions_in_menu()
-                });
+                .is_some_and(|provider| provider.provider.show_completions_in_menu());
 
         let preview_requires_modifier =
             all_language_settings(file, cx).edit_predictions_mode() == EditPredictionsMode::Subtle;
@@ -7726,7 +7718,7 @@ impl Editor {
             || self
                 .active_edit_prediction
                 .as_ref()
-                .map_or(false, |completion| {
+                .is_some_and(|completion| {
                     let invalidation_range = completion.invalidation_range.to_offset(&multibuffer);
                     let invalidation_range = invalidation_range.start..=invalidation_range.end;
                     !invalidation_range.contains(&offset_selection.head())
@@ -8427,7 +8419,7 @@ impl Editor {
                 .context_menu
                 .borrow()
                 .as_ref()
-                .map_or(false, |menu| menu.visible())
+                .is_some_and(|menu| menu.visible())
     }
 
     pub fn context_menu_origin(&self) -> Option<ContextMenuOrigin> {
@@ -8973,9 +8965,8 @@ impl Editor {
                     let end_row = start_row + line_count as u32;
                     visible_row_range.contains(&start_row)
                         && visible_row_range.contains(&end_row)
-                        && cursor_row.map_or(true, |cursor_row| {
-                            !((start_row..end_row).contains(&cursor_row))
-                        })
+                        && cursor_row
+                            .is_none_or(|cursor_row| !((start_row..end_row).contains(&cursor_row)))
                 })?;
 
             content_origin
@@ -9585,7 +9576,7 @@ impl Editor {
                 .tabstops
                 .iter()
                 .map(|tabstop| {
-                    let is_end_tabstop = tabstop.ranges.first().map_or(false, |tabstop| {
+                    let is_end_tabstop = tabstop.ranges.first().is_some_and(|tabstop| {
                         tabstop.is_empty() && tabstop.start == snippet.text.len() as isize
                     });
                     let mut tabstop_ranges = tabstop
@@ -11716,7 +11707,7 @@ impl Editor {
                     let transpose_start = display_map
                         .buffer_snapshot
                         .clip_offset(transpose_offset.saturating_sub(1), Bias::Left);
-                    if edits.last().map_or(true, |e| e.0.end <= transpose_start) {
+                    if edits.last().is_none_or(|e| e.0.end <= transpose_start) {
                         let transpose_end = display_map
                             .buffer_snapshot
                             .clip_offset(transpose_offset + 1, Bias::Right);
@@ -16229,23 +16220,21 @@ impl Editor {
 
         if split {
             workspace.split_item(SplitDirection::Right, item.clone(), window, cx);
-        } else {
-            if PreviewTabsSettings::get_global(cx).enable_preview_from_code_navigation {
-                let (preview_item_id, preview_item_idx) =
-                    workspace.active_pane().read_with(cx, |pane, _| {
-                        (pane.preview_item_id(), pane.preview_item_idx())
-                    });
+        } else if PreviewTabsSettings::get_global(cx).enable_preview_from_code_navigation {
+            let (preview_item_id, preview_item_idx) =
+                workspace.active_pane().read_with(cx, |pane, _| {
+                    (pane.preview_item_id(), pane.preview_item_idx())
+                });
 
-                workspace.add_item_to_active_pane(item.clone(), preview_item_idx, true, window, cx);
+            workspace.add_item_to_active_pane(item.clone(), preview_item_idx, true, window, cx);
 
-                if let Some(preview_item_id) = preview_item_id {
-                    workspace.active_pane().update(cx, |pane, cx| {
-                        pane.remove_item(preview_item_id, false, false, window, cx);
-                    });
-                }
-            } else {
-                workspace.add_item_to_active_pane(item.clone(), None, true, window, cx);
+            if let Some(preview_item_id) = preview_item_id {
+                workspace.active_pane().update(cx, |pane, cx| {
+                    pane.remove_item(preview_item_id, false, false, window, cx);
+                });
             }
+        } else {
+            workspace.add_item_to_active_pane(item.clone(), None, true, window, cx);
         }
         workspace.active_pane().update(cx, |pane, cx| {
             pane.set_preview_item_id(Some(item_id), cx);
@@ -19010,7 +18999,7 @@ impl Editor {
 
     fn has_blame_entries(&self, cx: &App) -> bool {
         self.blame()
-            .map_or(false, |blame| blame.read(cx).has_generated_entries())
+            .is_some_and(|blame| blame.read(cx).has_generated_entries())
     }
 
     fn newest_selection_head_on_empty_line(&self, cx: &App) -> bool {
@@ -19660,7 +19649,7 @@ impl Editor {
     pub fn has_background_highlights<T: 'static>(&self) -> bool {
         self.background_highlights
             .get(&HighlightKey::Type(TypeId::of::<T>()))
-            .map_or(false, |(_, highlights)| !highlights.is_empty())
+            .is_some_and(|(_, highlights)| !highlights.is_empty())
     }
 
     pub fn background_highlights_in_range(
@@ -20582,7 +20571,7 @@ impl Editor {
     // For now, don't allow opening excerpts in buffers that aren't backed by
     // regular project files.
     fn can_open_excerpts_in_file(file: Option<&Arc<dyn language::File>>) -> bool {
-        file.map_or(true, |file| project::File::from_dyn(Some(file)).is_some())
+        file.is_none_or(|file| project::File::from_dyn(Some(file)).is_some())
     }
 
     fn marked_text_ranges(&self, cx: &App) -> Option<Vec<Range<OffsetUtf16>>> {
@@ -21125,7 +21114,7 @@ impl Editor {
 
     pub fn has_visible_completions_menu(&self) -> bool {
         !self.edit_prediction_preview_is_active()
-            && self.context_menu.borrow().as_ref().map_or(false, |menu| {
+            && self.context_menu.borrow().as_ref().is_some_and(|menu| {
                 menu.visible() && matches!(menu, CodeContextMenu::Completions(_))
             })
     }
@@ -21548,9 +21537,9 @@ fn is_grapheme_whitespace(text: &str) -> bool {
 }
 
 fn should_stay_with_preceding_ideograph(text: &str) -> bool {
-    text.chars().next().map_or(false, |ch| {
-        matches!(ch, '。' | '、' | '，' | '？' | '！' | '：' | '；' | '…')
-    })
+    text.chars()
+        .next()
+        .is_some_and(|ch| matches!(ch, '。' | '、' | '，' | '？' | '！' | '：' | '；' | '…'))
 }
 
 #[derive(PartialEq, Eq, Debug, Clone, Copy)]
@@ -21589,11 +21578,11 @@ impl<'a> Iterator for WordBreakingTokenizer<'a> {
             } else {
                 let mut words = self.input[offset..].split_word_bound_indices().peekable();
                 let mut next_word_bound = words.peek().copied();
-                if next_word_bound.map_or(false, |(i, _)| i == 0) {
+                if next_word_bound.is_some_and(|(i, _)| i == 0) {
                     next_word_bound = words.next();
                 }
                 while let Some(grapheme) = iter.peek().copied() {
-                    if next_word_bound.map_or(false, |(i, _)| i == offset) {
+                    if next_word_bound.is_some_and(|(i, _)| i == offset) {
                         break;
                     };
                     if is_grapheme_whitespace(grapheme) != is_whitespace

crates/editor/src/editor_settings.rs

@@ -810,10 +810,8 @@ impl Settings for EditorSettings {
             if gutter.line_numbers.is_some() {
                 old_gutter.line_numbers = gutter.line_numbers
             }
-        } else {
-            if gutter != GutterContent::default() {
-                current.gutter = Some(gutter)
-            }
+        } else if gutter != GutterContent::default() {
+            current.gutter = Some(gutter)
         }
         if let Some(b) = vscode.read_bool("editor.scrollBeyondLastLine") {
             current.scroll_beyond_last_line = Some(if b {

crates/editor/src/element.rs

@@ -919,6 +919,7 @@ impl EditorElement {
         {
             #[allow(
                 clippy::collapsible_if,
+                clippy::needless_return,
                 reason = "The cfg-block below makes this a false positive"
             )]
             if !text_hitbox.is_hovered(window) || editor.read_only(cx) {
@@ -1126,26 +1127,24 @@ impl EditorElement {
 
         let hovered_diff_hunk_row = if let Some(control_row) = hovered_diff_control {
             Some(control_row)
-        } else {
-            if text_hovered {
-                let current_row = valid_point.row();
-                position_map.display_hunks.iter().find_map(|(hunk, _)| {
-                    if let DisplayDiffHunk::Unfolded {
-                        display_row_range, ..
-                    } = hunk
-                    {
-                        if display_row_range.contains(&current_row) {
-                            Some(display_row_range.start)
-                        } else {
-                            None
-                        }
+        } else if text_hovered {
+            let current_row = valid_point.row();
+            position_map.display_hunks.iter().find_map(|(hunk, _)| {
+                if let DisplayDiffHunk::Unfolded {
+                    display_row_range, ..
+                } = hunk
+                {
+                    if display_row_range.contains(&current_row) {
+                        Some(display_row_range.start)
                     } else {
                         None
                     }
-                })
-            } else {
-                None
-            }
+                } else {
+                    None
+                }
+            })
+        } else {
+            None
         };
 
         if hovered_diff_hunk_row != editor.hovered_diff_hunk_row {
@@ -1159,11 +1158,11 @@ impl EditorElement {
                 .inline_blame_popover
                 .as_ref()
                 .and_then(|state| state.popover_bounds)
-                .map_or(false, |bounds| bounds.contains(&event.position));
+                .is_some_and(|bounds| bounds.contains(&event.position));
             let keyboard_grace = editor
                 .inline_blame_popover
                 .as_ref()
-                .map_or(false, |state| state.keyboard_grace);
+                .is_some_and(|state| state.keyboard_grace);
 
             if mouse_over_inline_blame || mouse_over_popover {
                 editor.show_blame_popover(blame_entry, event.position, false, cx);
@@ -1190,10 +1189,10 @@ impl EditorElement {
                 let is_visible = editor
                     .gutter_breakpoint_indicator
                     .0
-                    .map_or(false, |indicator| indicator.is_active);
+                    .is_some_and(|indicator| indicator.is_active);
 
                 let has_existing_breakpoint =
-                    editor.breakpoint_store.as_ref().map_or(false, |store| {
+                    editor.breakpoint_store.as_ref().is_some_and(|store| {
                         let Some(project) = &editor.project else {
                             return false;
                         };
@@ -2220,12 +2219,11 @@ impl EditorElement {
                 cmp::max(padded_line, min_start)
             };
 
-            let behind_edit_prediction_popover = edit_prediction_popover_origin.as_ref().map_or(
-                false,
-                |edit_prediction_popover_origin| {
+            let behind_edit_prediction_popover = edit_prediction_popover_origin
+                .as_ref()
+                .is_some_and(|edit_prediction_popover_origin| {
                     (pos_y..pos_y + line_height).contains(&edit_prediction_popover_origin.y)
-                },
-            );
+                });
             let opacity = if behind_edit_prediction_popover {
                 0.5
             } else {
@@ -2291,9 +2289,7 @@ impl EditorElement {
                         None
                     }
                 })
-                .map_or(false, |source| {
-                    matches!(source, CodeActionSource::Indicator(..))
-                });
+                .is_some_and(|source| matches!(source, CodeActionSource::Indicator(..)));
             Some(editor.render_inline_code_actions(icon_size, display_point.row(), active, cx))
         })?;
 
@@ -2909,7 +2905,7 @@ impl EditorElement {
                         if multibuffer_row
                             .0
                             .checked_sub(1)
-                            .map_or(false, |previous_row| {
+                            .is_some_and(|previous_row| {
                                 snapshot.is_line_folded(MultiBufferRow(previous_row))
                             })
                         {
@@ -3900,7 +3896,7 @@ impl EditorElement {
         for (row, block) in fixed_blocks {
             let block_id = block.id();
 
-            if focused_block.as_ref().map_or(false, |b| b.id == block_id) {
+            if focused_block.as_ref().is_some_and(|b| b.id == block_id) {
                 focused_block = None;
             }
 
@@ -3957,7 +3953,7 @@ impl EditorElement {
             };
             let block_id = block.id();
 
-            if focused_block.as_ref().map_or(false, |b| b.id == block_id) {
+            if focused_block.as_ref().is_some_and(|b| b.id == block_id) {
                 focused_block = None;
             }
 
@@ -4736,7 +4732,7 @@ impl EditorElement {
                 }
             };
 
-            let source_included = source_display_point.map_or(true, |source_display_point| {
+            let source_included = source_display_point.is_none_or(|source_display_point| {
                 visible_range
                     .to_inclusive()
                     .contains(&source_display_point.row())
@@ -4916,7 +4912,7 @@ impl EditorElement {
         let intersects_menu = |bounds: Bounds<Pixels>| -> bool {
             context_menu_layout
                 .as_ref()
-                .map_or(false, |menu| bounds.intersects(&menu.bounds))
+                .is_some_and(|menu| bounds.intersects(&menu.bounds))
         };
 
         let can_place_above = {
@@ -5101,7 +5097,7 @@ impl EditorElement {
 
                 if active_positions
                     .iter()
-                    .any(|p| p.map_or(false, |p| display_row_range.contains(&p.row())))
+                    .any(|p| p.is_some_and(|p| display_row_range.contains(&p.row())))
                 {
                     let y = display_row_range.start.as_f32() * line_height
                         + text_hitbox.bounds.top()
@@ -5214,7 +5210,7 @@ impl EditorElement {
         let intersects_menu = |bounds: Bounds<Pixels>| -> bool {
             context_menu_layout
                 .as_ref()
-                .map_or(false, |menu| bounds.intersects(&menu.bounds))
+                .is_some_and(|menu| bounds.intersects(&menu.bounds))
         };
 
         let final_origin = if popover_bounds_above.is_contained_within(hitbox)
@@ -5299,7 +5295,7 @@ impl EditorElement {
                     let mut end_row = start_row.0;
                     while active_rows
                         .peek()
-                        .map_or(false, |(active_row, has_selection)| {
+                        .is_some_and(|(active_row, has_selection)| {
                             active_row.0 == end_row + 1
                                 && has_selection.selection == contains_non_empty_selection.selection
                         })
@@ -6687,25 +6683,23 @@ impl EditorElement {
                                 editor.set_scroll_position(position, window, cx);
                             }
                             cx.stop_propagation();
-                        } else {
-                            if minimap_hitbox.is_hovered(window) {
-                                editor.scroll_manager.set_is_hovering_minimap_thumb(
-                                    !event.dragging()
-                                        && layout
-                                            .thumb_layout
-                                            .thumb_bounds
-                                            .is_some_and(|bounds| bounds.contains(&event.position)),
-                                    cx,
-                                );
+                        } else if minimap_hitbox.is_hovered(window) {
+                            editor.scroll_manager.set_is_hovering_minimap_thumb(
+                                !event.dragging()
+                                    && layout
+                                        .thumb_layout
+                                        .thumb_bounds
+                                        .is_some_and(|bounds| bounds.contains(&event.position)),
+                                cx,
+                            );
 
-                                // Stop hover events from propagating to the
-                                // underlying editor if the minimap hitbox is hovered
-                                if !event.dragging() {
-                                    cx.stop_propagation();
-                                }
-                            } else {
-                                editor.scroll_manager.hide_minimap_thumb(cx);
+                            // Stop hover events from propagating to the
+                            // underlying editor if the minimap hitbox is hovered
+                            if !event.dragging() {
+                                cx.stop_propagation();
                             }
+                        } else {
+                            editor.scroll_manager.hide_minimap_thumb(cx);
                         }
                         mouse_position = event.position;
                     });
@@ -7084,9 +7078,7 @@ impl EditorElement {
         let unstaged_hollow = ProjectSettings::get_global(cx)
             .git
             .hunk_style
-            .map_or(false, |style| {
-                matches!(style, GitHunkStyleSetting::UnstagedHollow)
-            });
+            .is_some_and(|style| matches!(style, GitHunkStyleSetting::UnstagedHollow));
 
         unstaged == unstaged_hollow
     }
@@ -8183,7 +8175,7 @@ impl Element for EditorElement {
                     let is_row_soft_wrapped = |row: usize| {
                         row_infos
                             .get(row)
-                            .map_or(true, |info| info.buffer_row.is_none())
+                            .is_none_or(|info| info.buffer_row.is_none())
                     };
 
                     let start_anchor = if start_row == Default::default() {
@@ -9718,14 +9710,12 @@ impl PointForPosition {
             false
         } else if start_row == end_row {
             candidate_col >= start_col && candidate_col < end_col
+        } else if candidate_row == start_row {
+            candidate_col >= start_col
+        } else if candidate_row == end_row {
+            candidate_col < end_col
         } else {
-            if candidate_row == start_row {
-                candidate_col >= start_col
-            } else if candidate_row == end_row {
-                candidate_col < end_col
-            } else {
-                true
-            }
+            true
         }
     }
 }

crates/editor/src/git/blame.rs

@@ -415,7 +415,7 @@ impl GitBlame {
             let old_end = cursor.end();
             if row_edits
                 .peek()
-                .map_or(true, |next_edit| next_edit.old.start >= old_end)
+                .is_none_or(|next_edit| next_edit.old.start >= old_end)
                 && let Some(entry) = cursor.item()
             {
                 if old_end > edit.old.end {

crates/editor/src/hover_links.rs

@@ -271,7 +271,7 @@ impl Editor {
             Task::ready(Ok(Navigated::No))
         };
         self.select(SelectPhase::End, window, cx);
-        return navigate_task;
+        navigate_task
     }
 }
 
@@ -871,7 +871,7 @@ fn surrounding_filename(
         .peekable();
     while let Some(ch) = forwards.next() {
         // Skip escaped whitespace
-        if ch == '\\' && forwards.peek().map_or(false, |ch| ch.is_whitespace()) {
+        if ch == '\\' && forwards.peek().is_some_and(|ch| ch.is_whitespace()) {
             token_end += ch.len_utf8();
             let whitespace = forwards.next().unwrap();
             token_end += whitespace.len_utf8();

crates/editor/src/items.rs

@@ -201,7 +201,7 @@ impl FollowableItem for Editor {
         if buffer
             .as_singleton()
             .and_then(|buffer| buffer.read(cx).file())
-            .map_or(false, |file| file.is_private())
+            .is_some_and(|file| file.is_private())
         {
             return None;
         }
@@ -715,7 +715,7 @@ impl Item for Editor {
             .read(cx)
             .as_singleton()
             .and_then(|buffer| buffer.read(cx).file())
-            .map_or(false, |file| file.disk_state() == DiskState::Deleted);
+            .is_some_and(|file| file.disk_state() == DiskState::Deleted);
 
         h_flex()
             .gap_2()

crates/editor/src/jsx_tag_auto_close.rs

@@ -86,9 +86,9 @@ pub(crate) fn should_auto_close(
         });
     }
     if to_auto_edit.is_empty() {
-        return None;
+        None
     } else {
-        return Some(to_auto_edit);
+        Some(to_auto_edit)
     }
 }
 
@@ -186,7 +186,7 @@ pub(crate) fn generate_auto_close_edits(
                     let range = node_name.byte_range();
                     return buffer.text_for_range(range).equals_str(name);
                 }
-                return is_empty;
+                is_empty
             };
 
             let tree_root_node = {
@@ -227,7 +227,7 @@ pub(crate) fn generate_auto_close_edits(
                             let has_open_tag_with_same_tag_name = ancestor
                                 .named_child(0)
                                 .filter(|n| n.kind() == config.open_tag_node_name)
-                                .map_or(false, |element_open_tag_node| {
+                                .is_some_and(|element_open_tag_node| {
                                     tag_node_name_equals(&element_open_tag_node, &tag_name)
                                 });
                             if has_open_tag_with_same_tag_name {
@@ -263,8 +263,7 @@ pub(crate) fn generate_auto_close_edits(
             }
 
             let is_after_open_tag = |node: &Node| {
-                return node.start_byte() < open_tag.start_byte()
-                    && node.end_byte() < open_tag.start_byte();
+                node.start_byte() < open_tag.start_byte() && node.end_byte() < open_tag.start_byte()
             };
 
             // perf: use cursor for more efficient traversal
@@ -301,7 +300,7 @@ pub(crate) fn generate_auto_close_edits(
         let edit_range = edit_anchor..edit_anchor;
         edits.push((edit_range, format!("</{}>", tag_name)));
     }
-    return Ok(edits);
+    Ok(edits)
 }
 
 pub(crate) fn refresh_enabled_in_any_buffer(
@@ -367,7 +366,7 @@ pub(crate) fn construct_initial_buffer_versions_map<
             initial_buffer_versions.insert(buffer_id, buffer_version);
         }
     }
-    return initial_buffer_versions;
+    initial_buffer_versions
 }
 
 pub(crate) fn handle_from(
@@ -455,12 +454,9 @@ pub(crate) fn handle_from(
             let ensure_no_edits_since_start = || -> Option<()> {
                 let has_edits_since_start = this
                     .read_with(cx, |this, cx| {
-                        this.buffer
-                            .read(cx)
-                            .buffer(buffer_id)
-                            .map_or(true, |buffer| {
-                                buffer.read(cx).has_edits_since(&buffer_version_initial)
-                            })
+                        this.buffer.read(cx).buffer(buffer_id).is_none_or(|buffer| {
+                            buffer.read(cx).has_edits_since(&buffer_version_initial)
+                        })
                     })
                     .ok()?;
 

crates/editor/src/mouse_context_menu.rs

@@ -61,13 +61,13 @@ impl MouseContextMenu {
             source,
             offset: position - (source_position + content_origin),
         };
-        return Some(MouseContextMenu::new(
+        Some(MouseContextMenu::new(
             editor,
             menu_position,
             context_menu,
             window,
             cx,
-        ));
+        ))
     }
 
     pub(crate) fn new(

crates/editor/src/tasks.rs

@@ -89,7 +89,7 @@ impl Editor {
                     .lsp_task_source()?;
                 if lsp_settings
                     .get(&lsp_tasks_source)
-                    .map_or(true, |s| s.enable_lsp_tasks)
+                    .is_none_or(|s| s.enable_lsp_tasks)
                 {
                     let buffer_id = buffer.read(cx).remote_id();
                     Some((lsp_tasks_source, buffer_id))

crates/eval/src/assertions.rs

@@ -54,7 +54,7 @@ impl AssertionsReport {
     pub fn passed_count(&self) -> usize {
         self.ran
             .iter()
-            .filter(|a| a.result.as_ref().map_or(false, |result| result.passed))
+            .filter(|a| a.result.as_ref().is_ok_and(|result| result.passed))
             .count()
     }
 

crates/eval/src/eval.rs

@@ -112,7 +112,7 @@ fn main() {
         let telemetry = app_state.client.telemetry();
         telemetry.start(system_id, installation_id, session_id, cx);
 
-        let enable_telemetry = env::var("ZED_EVAL_TELEMETRY").map_or(false, |value| value == "1")
+        let enable_telemetry = env::var("ZED_EVAL_TELEMETRY").is_ok_and(|value| value == "1")
             && telemetry.has_checksum_seed();
         if enable_telemetry {
             println!("Telemetry enabled");

crates/eval/src/examples/add_arg_to_trait_method.rs

@@ -70,10 +70,10 @@ impl Example for AddArgToTraitMethod {
             let path_str = format!("crates/assistant_tools/src/{}.rs", tool_name);
             let edits = edits.get(Path::new(&path_str));
 
-            let ignored = edits.map_or(false, |edits| {
+            let ignored = edits.is_some_and(|edits| {
                 edits.has_added_line("        _window: Option<gpui::AnyWindowHandle>,\n")
             });
-            let uningored = edits.map_or(false, |edits| {
+            let uningored = edits.is_some_and(|edits| {
                 edits.has_added_line("        window: Option<gpui::AnyWindowHandle>,\n")
             });
 
@@ -89,7 +89,7 @@ impl Example for AddArgToTraitMethod {
         let batch_tool_edits = edits.get(Path::new("crates/assistant_tools/src/batch_tool.rs"));
 
         cx.assert(
-            batch_tool_edits.map_or(false, |edits| {
+            batch_tool_edits.is_some_and(|edits| {
                 edits.has_added_line("        window: Option<gpui::AnyWindowHandle>,\n")
             }),
             "Argument:   batch_tool",

crates/extension/src/extension_builder.rs

@@ -401,7 +401,7 @@ impl ExtensionBuilder {
         let mut clang_path = wasi_sdk_dir.clone();
         clang_path.extend(["bin", &format!("clang{}", env::consts::EXE_SUFFIX)]);
 
-        if fs::metadata(&clang_path).map_or(false, |metadata| metadata.is_file()) {
+        if fs::metadata(&clang_path).is_ok_and(|metadata| metadata.is_file()) {
             return Ok(clang_path);
         }
 

crates/extension/src/extension_events.rs

@@ -19,9 +19,8 @@ pub struct ExtensionEvents;
 impl ExtensionEvents {
     /// Returns the global [`ExtensionEvents`].
     pub fn try_global(cx: &App) -> Option<Entity<Self>> {
-        return cx
-            .try_global::<GlobalExtensionEvents>()
-            .map(|g| g.0.clone());
+        cx.try_global::<GlobalExtensionEvents>()
+            .map(|g| g.0.clone())
     }
 
     fn new(_cx: &mut Context<Self>) -> Self {

crates/extension_host/src/extension_host.rs

@@ -562,12 +562,12 @@ impl ExtensionStore {
                 extensions
                     .into_iter()
                     .filter(|extension| {
-                        this.extension_index.extensions.get(&extension.id).map_or(
-                            true,
-                            |installed_extension| {
+                        this.extension_index
+                            .extensions
+                            .get(&extension.id)
+                            .is_none_or(|installed_extension| {
                                 installed_extension.manifest.version != extension.manifest.version
-                            },
-                        )
+                            })
                     })
                     .collect()
             })
@@ -1451,7 +1451,7 @@ impl ExtensionStore {
 
                     if extension_dir
                         .file_name()
-                        .map_or(false, |file_name| file_name == ".DS_Store")
+                        .is_some_and(|file_name| file_name == ".DS_Store")
                     {
                         continue;
                     }

crates/feature_flags/src/feature_flags.rs

@@ -14,7 +14,7 @@ struct FeatureFlags {
 }
 
 pub static ZED_DISABLE_STAFF: LazyLock<bool> = LazyLock::new(|| {
-    std::env::var("ZED_DISABLE_STAFF").map_or(false, |value| !value.is_empty() && value != "0")
+    std::env::var("ZED_DISABLE_STAFF").is_ok_and(|value| !value.is_empty() && value != "0")
 });
 
 impl FeatureFlags {

crates/feedback/src/system_specs.rs

@@ -135,7 +135,7 @@ impl Display for SystemSpecs {
 fn try_determine_available_gpus() -> Option<String> {
     #[cfg(any(target_os = "linux", target_os = "freebsd"))]
     {
-        return std::process::Command::new("vulkaninfo")
+        std::process::Command::new("vulkaninfo")
             .args(&["--summary"])
             .output()
             .ok()
@@ -150,11 +150,11 @@ fn try_determine_available_gpus() -> Option<String> {
                 ]
                 .join("\n")
             })
-            .or(Some("Failed to run `vulkaninfo --summary`".to_string()));
+            .or(Some("Failed to run `vulkaninfo --summary`".to_string()))
     }
     #[cfg(not(any(target_os = "linux", target_os = "freebsd")))]
     {
-        return None;
+        None
     }
 }
 

crates/file_finder/src/file_finder.rs

@@ -878,9 +878,7 @@ impl FileFinderDelegate {
                 PathMatchCandidateSet {
                     snapshot: worktree.snapshot(),
                     include_ignored: self.include_ignored.unwrap_or_else(|| {
-                        worktree
-                            .root_entry()
-                            .map_or(false, |entry| entry.is_ignored)
+                        worktree.root_entry().is_some_and(|entry| entry.is_ignored)
                     }),
                     include_root_name,
                     candidates: project::Candidates::Files,

crates/file_finder/src/open_path_prompt.rs

@@ -728,7 +728,7 @@ impl PickerDelegate for OpenPathDelegate {
                         .child(LabelLike::new().child(label_with_highlights)),
                 )
             }
-            DirectoryState::None { .. } => return None,
+            DirectoryState::None { .. } => None,
         }
     }
 

crates/file_icons/src/file_icons.rs

@@ -72,7 +72,7 @@ impl FileIcons {
                 return maybe_path;
             }
         }
-        return this.get_icon_for_type("default", cx);
+        this.get_icon_for_type("default", cx)
     }
 
     fn default_icon_theme(cx: &App) -> Option<Arc<IconTheme>> {

crates/fs/src/fs.rs

@@ -625,13 +625,13 @@ impl Fs for RealFs {
     async fn is_file(&self, path: &Path) -> bool {
         smol::fs::metadata(path)
             .await
-            .map_or(false, |metadata| metadata.is_file())
+            .is_ok_and(|metadata| metadata.is_file())
     }
 
     async fn is_dir(&self, path: &Path) -> bool {
         smol::fs::metadata(path)
             .await
-            .map_or(false, |metadata| metadata.is_dir())
+            .is_ok_and(|metadata| metadata.is_dir())
     }
 
     async fn metadata(&self, path: &Path) -> Result<Option<Metadata>> {

crates/git/src/repository.rs

@@ -269,10 +269,8 @@ impl GitExcludeOverride {
     pub async fn restore_original(&mut self) -> Result<()> {
         if let Some(ref original) = self.original_excludes {
             smol::fs::write(&self.git_exclude_path, original).await?;
-        } else {
-            if self.git_exclude_path.exists() {
-                smol::fs::remove_file(&self.git_exclude_path).await?;
-            }
+        } else if self.git_exclude_path.exists() {
+            smol::fs::remove_file(&self.git_exclude_path).await?;
         }
 
         self.added_excludes = None;
@@ -2052,7 +2050,7 @@ fn parse_branch_input(input: &str) -> Result<Vec<Branch>> {
 }
 
 fn parse_upstream_track(upstream_track: &str) -> Result<UpstreamTracking> {
-    if upstream_track == "" {
+    if upstream_track.is_empty() {
         return Ok(UpstreamTracking::Tracked(UpstreamTrackingStatus {
             ahead: 0,
             behind: 0,

crates/git_ui/src/commit_view.rs

@@ -88,11 +88,10 @@ impl CommitView {
                             let ix = pane.items().position(|item| {
                                 let commit_view = item.downcast::<CommitView>();
                                 commit_view
-                                    .map_or(false, |view| view.read(cx).commit.sha == commit.sha)
+                                    .is_some_and(|view| view.read(cx).commit.sha == commit.sha)
                             });
                             if let Some(ix) = ix {
                                 pane.activate_item(ix, true, true, window, cx);
-                                return;
                             } else {
                                 pane.add_item(Box::new(commit_view), true, true, None, window, cx);
                             }