Hide default config in Debug impl

Author: lnicola

src/tools/rust-analyzer/crates/rust-analyzer/src/config.rs

@@ -727,7 +727,7 @@ enum RatomlFile {
     Crate(LocalConfigInput),
 }
 
-#[derive(Debug, Clone)]
+#[derive(Clone)]
 pub struct Config {
     /// Projects that have a Cargo.toml or a rust-project.json in a
     /// parent directory, so we can discover them by walking the
@@ -765,6 +765,26 @@ pub struct Config {
     detached_files: Vec<AbsPathBuf>,
 }
 
+impl fmt::Debug for Config {
+    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
+        f.debug_struct("Config")
+            .field("discovered_projects_from_filesystem", &self.discovered_projects_from_filesystem)
+            .field("discovered_projects_from_command", &self.discovered_projects_from_command)
+            .field("workspace_roots", &self.workspace_roots)
+            .field("caps", &self.caps)
+            .field("root_path", &self.root_path)
+            .field("snippets", &self.snippets)
+            .field("visual_studio_code_version", &self.visual_studio_code_version)
+            .field("client_config", &self.client_config)
+            .field("user_config", &self.user_config)
+            .field("ratoml_file", &self.ratoml_file)
+            .field("source_root_parent_map", &self.source_root_parent_map)
+            .field("validation_errors", &self.validation_errors)
+            .field("detached_files", &self.detached_files)
+            .finish()
+    }
+}
+
 // Delegate capability fetching methods
 impl std::ops::Deref for Config {
     type Target = ClientCapabilities;