Reload project on .cargo/config[.toml] changes

Fixes rust-lang#11024

Author: nico-abram

crates/rust-analyzer/src/config.rs

@@ -67,7 +67,7 @@ config_data! {
         callInfo_full: bool                                = "true",
 
         /// Automatically refresh project info via `cargo metadata` on
-        /// `Cargo.toml` changes.
+        /// `Cargo.toml` or `.cargo/config.toml` changes.
         cargo_autoreload: bool           = "true",
         /// Activate all available features (`--all-features`).
         cargo_allFeatures: bool          = "false",

crates/rust-analyzer/src/reload.rs

@@ -617,6 +617,11 @@ pub(crate) fn should_refresh_for_change(path: &AbsPath, change_kind: ChangeKind)
         return false;
     }
     if path.extension().unwrap_or_default() != "rs" {
+        if (file_name == "config.toml" || file_name == "config")
+            && path.parent().map(|parent| parent.as_ref().ends_with(".cargo")) == Some(true)
+        {
+            return true;
+        }
         return false;
     }
     if IMPLICIT_TARGET_FILES.iter().any(|it| path.as_ref().ends_with(it)) {

docs/user/generated_config.adoc

@@ -42,7 +42,7 @@ Show function name and docs in parameter hints.
 +
 --
 Automatically refresh project info via `cargo metadata` on
-`Cargo.toml` changes.
+`Cargo.toml` or `.cargo/config.toml` changes.
 --
 [[rust-analyzer.cargo.allFeatures]]rust-analyzer.cargo.allFeatures (default: `false`)::
 +

editors/code/package.json

@@ -439,7 +439,7 @@
                     "type": "boolean"
                 },
                 "rust-analyzer.cargo.autoreload": {
-                    "markdownDescription": "Automatically refresh project info via `cargo metadata` on\n`Cargo.toml` changes.",
+                    "markdownDescription": "Automatically refresh project info via `cargo metadata` on\n`Cargo.toml` or `.cargo/config.toml` changes.",
                     "default": true,
                     "type": "boolean"
                 },