Merge pull request #10814 from ccutrer/server-fast-stdout

Write to stdout ASAP in server mode

Author: koic

changelog/change_no_buffer_server_stdout.md

@@ -0,0 +1 @@
+* [#10814](https://github.com/rubocop/rubocop/pull/10814): Avoid buffering stdout when running in server mode. ([@ccutrer][])

lib/rubocop/server/client_command/base.rb

@@ -29,7 +29,7 @@ def send_request(command:, args: [], body: '')
             socket.puts [Cache.token_path.read, Dir.pwd, command, *args].shelljoin
             socket.write body
             socket.close_write
-            $stdout.write socket.read(4096) until socket.eof?
+            $stdout.write socket.readpartial(4096) until socket.eof?
           end
         end