[Fix #8683] Make naming cops work with non-ascii characters

Closes #8683

CHANGELOG.md

@@ -25,6 +25,7 @@
 * [#8682](https://github.com/rubocop-hq/rubocop/pull/8682): Fix a positive for `Style/HashTransformKeys` and `Style/HashTransformValues` when the `each_with_object` hash is used in the transformed key or value. ([@eugeneius][])
 * [#8688](https://github.com/rubocop-hq/rubocop/issues/8688): Mark `Style/GlobalStdStream` as unsafe autocorrection. ([@marcandre][])
 * [#8642](https://github.com/rubocop-hq/rubocop/issues/8642): Fix a false negative for `Style/SpaceInsideHashLiteralBraces` when a correct empty hash precedes the incorrect hash. ([@dvandersluis][])
+* [#8683](https://github.com/rubocop-hq/rubocop/issues/8683): Make naming cops work with non-ascii characters. ([@tejasbubane][])
 
 ### Changes
 

lib/rubocop/cop/mixin/configurable_naming.rb

@@ -8,8 +8,8 @@ module ConfigurableNaming
       include ConfigurableFormatting
 
       FORMATS = {
-        snake_case: /^@{0,2}[\da-z_]+[!?=]?$/,
-        camelCase:  /^@{0,2}(?:_|_?[a-z][\da-zA-Z]*)[!?=]?$/
+        snake_case: /^@{0,2}[\d[[:lower:]]_]+[!?=]?$/,
+        camelCase:  /^@{0,2}(?:_|_?[[[:lower:]]][\d[[:lower:]][[:upper:]]]*)[!?=]?$/
       }.freeze
     end
   end

lib/rubocop/cop/naming/file_name.rb

@@ -33,7 +33,7 @@ class FileName < Base
                             'called `%<namespace>s`.'
         MSG_REGEX = '`%<basename>s` should match `%<regex>s`.'
 
-        SNAKE_CASE = /^[\da-z_.?!]+$/.freeze
+        SNAKE_CASE = /^[\d[[:lower:]]_.?!]+$/.freeze
 
         def on_new_investigation
           file_path = processed_source.file_path

spec/rubocop/cop/naming/file_name_spec.rb

@@ -468,4 +468,12 @@ class HTTPServer
       expect(offenses.empty?).to be(true)
     end
   end
+
+  context 'with non-ascii characters in filename' do
+    let(:filename) { '/some/dir/ünbound_sérvér.rb' }
+
+    it 'reports an offense' do
+      expect(offenses.empty?).to be(true)
+    end
+  end
 end

spec/rubocop/cop/naming/method_name_spec.rb

@@ -344,4 +344,10 @@ def self.foo_bar
     include_examples 'never accepted',  'camelCase'
     include_examples 'multiple attr methods', 'camelCase'
   end
+
+  it 'works for non-ascii characters' do
+    expect_no_offenses(<<~RUBY)
+      def última_vista; end
+    RUBY
+  end
 end

spec/rubocop/cop/naming/variable_name_spec.rb

@@ -213,6 +213,10 @@ def foo(&block_arg); end
       RUBY
     end
 
+    it 'works with non-ascii characters' do
+      expect_no_offenses('léo = 1')
+    end
+
     include_examples 'always accepted'
   end
 end