Update some plugins.

sources_non_forked/vim-ruby/indent/ruby.vim

@@ -92,7 +92,7 @@ let s:ruby_indent_keywords =
       \    '\<\%(if\|for\|while\|until\|case\|unless\|begin\):\@!\>'
 
 " Def without an end clause: def method_call(...) = <expression>
-let s:ruby_endless_def = '\<def\s\+\k\+[!?]\=\%((.*)\|\s\)\s*='
+let s:ruby_endless_def = '\<def\s\+\%(\k\+\.\)\=\k\+[!?]\=\%((.*)\|\s\)\s*='
 
 " Regex used for words that, at the start of a line, remove a level of indent.
 let s:ruby_deindent_keywords =

sources_non_forked/vim-ruby/spec/indent/method_definitions_spec.rb

@@ -70,6 +70,10 @@ describe "Indenting" do
         def foo(
           bar
         ) = puts(bar)
+
+        # Reference: https://github.com/vim-ruby/vim-ruby/issues/450
+        def self.foo = puts(bar)
+        def bar.foo = puts(baz)
       end
     EOF
   end