Use .railsrc while creating new plugin if available

- Fixes #10700

railties/CHANGELOG.md

@@ -1,3 +1,8 @@
+*   Uses .railsrc while creating new plugin if it is available.
+    Fixes #10700.
+
+    *Prathamesh Sonpatki*
+
 *   Remove turbolinks when generating a new application based on a template that skips it.
 
     Example:

railties/lib/rails/commands/plugin.rb

@@ -2,6 +2,20 @@
   ARGV[0] = "--help"
 else
   ARGV.shift
+  unless ARGV.delete("--no-rc")
+    customrc = ARGV.index{ |x| x.include?("--rc=") }
+    railsrc = if customrc
+                File.expand_path(ARGV.delete_at(customrc).gsub(/--rc=/, ""))
+              else
+                File.join(File.expand_path("~"), '.railsrc')
+              end
+    if File.exist?(railsrc)
+      extra_args_string = File.read(railsrc)
+      extra_args = extra_args_string.split(/\n+/).map {|l| l.split}.flatten
+      puts "Using #{extra_args.join(" ")} from #{railsrc}"
+      ARGV.insert(1, *extra_args)
+    end
+  end
 end
 
 require 'rails/generators'