Add new action and handler for opening a specific setting (#40739)

Co-authored-by: Ben Kunkle <ben@zed.dev>

crates/zed/src/main.rs

@@ -847,6 +847,18 @@ fn handle_open_request(request: OpenRequest, app_state: Arc<AppState>, cx: &mut
                     .detach();
                 });
             }
+            OpenRequestKind::Setting { setting_path } => {
+                // zed://settings/languages/$(language)/tab_size  - DONT SUPPORT
+                // zed://settings/languages/Rust/tab_size  - SUPPORT
+                // languages.$(language).tab_size
+                // [ languages $(language) tab_size]
+                workspace::with_active_or_new_workspace(cx, |_workspace, window, cx| {
+                    window.dispatch_action(
+                        Box::new(zed_actions::OpenSettingsAt { path: setting_path }),
+                        cx,
+                    );
+                });
+            }
         }
 
         return;

crates/zed/src/zed/open_listener.rs

@@ -47,6 +47,7 @@ pub enum OpenRequestKind {
     AgentPanel,
     DockMenuAction { index: usize },
     BuiltinJsonSchema { schema_path: String },
+    Setting { setting_path: String },
 }
 
 impl OpenRequest {
@@ -93,6 +94,10 @@ impl OpenRequest {
                 this.kind = Some(OpenRequestKind::BuiltinJsonSchema {
                     schema_path: schema_path.to_string(),
                 });
+            } else if let Some(setting_path) = url.strip_prefix("zed://settings/") {
+                this.kind = Some(OpenRequestKind::Setting {
+                    setting_path: setting_path.to_string(),
+                });
             } else if url.starts_with("ssh://") {
                 this.parse_ssh_file_path(&url, cx)?
             } else if let Some(request_path) = parse_zed_link(&url, cx) {