Consistently use middle dot (·) instead of bullet (•) to separate items (#25248)

lib/linter/rubocop_middle_dot.rb

@@ -0,0 +1,31 @@
+# frozen_string_literal: true
+
+module RuboCop
+  module Cop
+    module Style
+      # Bans the usage of “•” (bullet) in HTML/HAML in favor of “·” (middle dot) in string literals
+      class MiddleDot < Base
+        extend AutoCorrector
+        extend Util
+
+        # rubocop:disable Style/MiddleDot
+        BULLET = '•'
+        # rubocop:enable Style/MiddleDot
+        MIDDLE_DOT = '·'
+        MESSAGE = "Use '#{MIDDLE_DOT}' (middle dot) instead of '#{BULLET}' (bullet)".freeze
+
+        def on_str(node)
+          # Constants like __FILE__ are handled as strings,
+          # but don't respond to begin.
+          return unless node.loc.respond_to?(:begin) && node.loc.begin
+
+          return unless node.value.include?(BULLET)
+
+          add_offense(node, message: MESSAGE) do |corrector|
+            corrector.replace(node, node.source.gsub(BULLET, MIDDLE_DOT))
+          end
+        end
+      end
+    end
+  end
+end