[Fix #9349] Fix a false positive for Lint/MultipleComparison

Fixes #9349.

This PR fixes a false positive for `Lint/MultipleComparison`
when using `&`, `|`, and `^` set operation operators in multiple comparison.
e.g. `x < y & y < z`

I think that the cop can probably allow using these operators by default.

changelog/fix_false_positive_for_lint_multiple_comparison.md

@@ -0,0 +1 @@
+* [#9349](https://github.com/rubocop-hq/rubocop/issues/9349): Fix a false positive for `Lint/MultipleComparison` when using `&`, `|`, and `^` set operation operators in multiple comparison. ([@koic][])

lib/rubocop/cop/lint/multiple_comparison.rb

@@ -11,21 +11,18 @@ module Lint
       # @example
       #
       #   # bad
-      #
       #   x < y < z
       #   10 <= x <= 20
       #
-      # @example
-      #
       #   # good
-      #
       #   x < y && y < z
       #   10 <= x && x <= 20
       class MultipleComparison < Base
         extend AutoCorrector
 
         MSG = 'Use the `&&` operator to compare multiple values.'
         COMPARISON_METHODS = %i[< > <= >=].freeze
+        SET_OPERATION_OPERATORS = %i[& | ^].freeze
         RESTRICT_ON_SEND = COMPARISON_METHODS
 
         def_node_matcher :multiple_compare?, <<~PATTERN
@@ -34,6 +31,9 @@ class MultipleComparison < Base
 
         def on_send(node)
           return unless (center = multiple_compare?(node))
+          # It allows multiple comparison using `&`, `|`, and `^` set operation operators.
+          # e.g. `x >= y & y < z`
+          return if center.send_type? && SET_OPERATION_OPERATORS.include?(center.method_name)
 
           add_offense(node) do |corrector|
             new_center = "#{center.source} && #{center.source}"

spec/rubocop/cop/lint/multiple_comparison_spec.rb

@@ -22,4 +22,16 @@
   it 'accepts to use one compare operator' do
     expect_no_offenses('x < 1')
   end
+
+  it 'accepts to use `&` operator' do
+    expect_no_offenses('x >= y & x < z')
+  end
+
+  it 'accepts to use `|` operator' do
+    expect_no_offenses('x >= y | x < z')
+  end
+
+  it 'accepts to use `^` operator' do
+    expect_no_offenses('x >= y ^ x < z')
+  end
 end