Store the client name

lib/ruby_lsp/executor.rb

@@ -623,6 +623,9 @@ def initialize_request(options)
       workspace_uri = options.dig(:workspaceFolders, 0, :uri)
       @store.workspace_uri = URI(workspace_uri) if workspace_uri
 
+      client_name = options.dig(:clientInfo, :name)
+      @store.client_name = client_name if client_name
+
       encodings = options.dig(:capabilities, :general, :positionEncodings)
       @store.encoding = if encodings.nil? || encodings.empty?
         Constant::PositionEncodingKind::UTF16

lib/ruby_lsp/store.rb

@@ -23,6 +23,9 @@ class Store
     sig { returns(T::Hash[Symbol, RequestConfig]) }
     attr_accessor :features_configuration
 
+    sig { returns(T.nilable(String)) }
+    attr_accessor :client_name
+
     sig { void }
     def initialize
       @state = T.let({}, T::Hash[String, Document])

test/executor_test.rb

@@ -353,6 +353,19 @@ def test_returns_void_for_unhandled_request
     assert_same(RubyLsp::VOID, result.response)
   end
 
+  def test_initialize_sets_client_name
+    @executor.execute({
+      method: "initialize",
+      params: {
+        initializationOptions: {},
+        capabilities: {},
+        clientInfo: { name: "FooClient" },
+      },
+    })
+
+    assert_equal("FooClient", @store.client_name)
+  end
+
   private
 
   def with_uninstalled_rubocop(&block)

test/store_test.rb

@@ -192,4 +192,9 @@ def test_push_edits
       @store.get(uri),
     )
   end
+
+  def test_client_name
+    @store.client_name = "FooClient"
+    assert_equal("FooClient", @store.client_name)
+  end
 end