Colorize empty embexpr more on IRB::Color

lib/irb/color.rb

@@ -22,8 +22,8 @@ module IRB # :nodoc:
       TOKEN_SEQ_EXPRS = {
         on_CHAR:            [[BLUE, BOLD],            [Ripper::EXPR_END]],
         on_const:           [[BLUE, BOLD, UNDERLINE], [Ripper::EXPR_ARG, Ripper::EXPR_CMDARG, Ripper::EXPR_ENDFN]],
-        on_embexpr_beg:     [[RED],                   [Ripper::EXPR_BEG, Ripper::EXPR_END]],
+        on_embexpr_beg:     [[RED],                   [Ripper::EXPR_BEG, Ripper::EXPR_END, Ripper::EXPR_FNAME]],
-        on_embexpr_end:     [[RED],                   [Ripper::EXPR_END, Ripper::EXPR_ENDFN, Ripper::EXPR_CMDARG]],
+        on_embexpr_end:     [[RED],                   [Ripper::EXPR_BEG, Ripper::EXPR_END, Ripper::EXPR_ENDFN, Ripper::EXPR_CMDARG]],
         on_embvar:          [[RED],                   [Ripper::EXPR_BEG]],
         on_heredoc_beg:     [[RED],                   [Ripper::EXPR_BEG]],
         on_heredoc_end:     [[RED],                   [Ripper::EXPR_BEG]],

test/irb/test_color.rb

@@ -42,6 +42,7 @@ module TestIRB
         "{'a': 1}" => "{#{RED}'#{CLEAR}#{RED}a#{CLEAR}#{RED}':#{CLEAR} #{BLUE}#{BOLD}1#{CLEAR}}",
         ":Struct" => "#{BLUE}#{BOLD}:#{CLEAR}#{BLUE}#{BOLD}#{UNDERLINE}Struct#{CLEAR}",
         "<<EOS\nhere\nEOS" => "#{RED}<<EOS#{CLEAR}\n#{RED}here#{CLEAR}\n#{RED}EOS#{CLEAR}",
+        '"#{}"' => "#{RED}\"#{CLEAR}#{RED}\#{#{CLEAR}#{RED}}#{CLEAR}#{RED}\"#{CLEAR}",
       }.each do |code, result|
         actual = with_term { IRB::Color.colorize_code(code) }
         assert_equal(result, actual, "Case: colorize_code(#{code.dump})\nResult: #{humanized_literal(actual)}")