https://git.ruby-lang.org/ruby.git/commit/?id=8b6aaeaddf

From 8b6aaeaddf2d13833c0540490a84741035a3a808 Mon Sep 17 00:00:00 2001
From: aycabta <aycabta@g...>
Date: Sun, 20 Dec 2020 12:20:00 +0900
Subject: [ruby/irb] Handle rest of tokens correctly if no newline at last

https://github.com/ruby/irb/commit/f3c8edad2a

diff --git a/lib/irb/ruby-lex.rb b/lib/irb/ruby-lex.rb
index 8507717..040c93e 100644
--- a/lib/irb/ruby-lex.rb
+++ b/lib/irb/ruby-lex.rb
@@ -63,16 +63,23 @@ class RubyLex https://github.com/ruby/ruby/blob/trunk/lib/irb/ruby-lex.rb#L63
         tokens = ripper_lex_without_warning(lines.map{ |l| l + "\n" }.join)
         code = String.new
         partial_tokens = []
+        unprocessed_tokens = []
         line_num_offset = 0
         tokens.each do |t|
           code << t[2]
           partial_tokens << t
+          unprocessed_tokens << t
           if t[2].include?("\n")
             ltype, indent, continue, code_block_open = check_state(code, partial_tokens)
             result << @prompt.call(ltype, indent, continue || code_block_open, @line_no + line_num_offset)
             line_num_offset += 1
+            unprocessed_tokens = []
           end
         end
+        unless unprocessed_tokens.empty?
+          ltype, indent, continue, code_block_open = check_state(code, unprocessed_tokens)
+          result << @prompt.call(ltype, indent, continue || code_block_open, @line_no + line_num_offset)
+        end
         result
       end
     end
-- 
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