emacs-29 9a751e0a38: ruby-mode: Support endless singleton method definitions too

[Dmitry Gutov]

branch: emacs-29
commit 9a751e0a38bb53c269efa034d089aaab821c2662
Author: Dmitry Gutov <dgutov@yandex.ru>
Commit: Dmitry Gutov <dgutov@yandex.ru>

    ruby-mode: Support endless singleton method definitions too
    
    * lisp/progmodes/ruby-mode.el (ruby-endless-method-head-re):
    Update to match not only 'self.' but 'xyz.' as well (bug#54702).
    
    * test/lisp/progmodes/ruby-mode-resources/ruby.rb (Bar#foo=):
    Update example.
---
 lisp/progmodes/ruby-mode.el                     | 3 ++-
 test/lisp/progmodes/ruby-mode-resources/ruby.rb | 4 +++-
 2 files changed, 5 insertions(+), 2 deletions(-)

diff --git a/lisp/progmodes/ruby-mode.el b/lisp/progmodes/ruby-mode.el
index ed6044280e..fa51597697 100644
--- a/lisp/progmodes/ruby-mode.el
+++ b/lisp/progmodes/ruby-mode.el
@@ -135,7 +135,8 @@ This should only be called after matching against 
`ruby-here-doc-beg-re'."
   "Regexp to match symbols.")
 
 (defconst ruby-endless-method-head-re
-  (format " *\\(self\\.\\)?%s+[?!]? *\\(([^()]*)\\)? +=" ruby-symbol-re)
+  (format " *\\(%s+\\.\\)?%s+[?!]? *\\(([^()]*)\\)? +="
+          ruby-symbol-re ruby-symbol-re)
   "Regexp to match the beginning of an endless method definition.
 
 It should match the part after \"def\" and until \"=\".")
diff --git a/test/lisp/progmodes/ruby-mode-resources/ruby.rb 
b/test/lisp/progmodes/ruby-mode-resources/ruby.rb
index 5636a4fc0e..2451edaee2 100644
--- a/test/lisp/progmodes/ruby-mode-resources/ruby.rb
+++ b/test/lisp/progmodes/ruby-mode-resources/ruby.rb
@@ -533,6 +533,8 @@ class Bar
         baz,
         bar
       )
-    hello
+    def baz.full_name = "#{bar} 3"
+
+    baz
   end
 end