[Fix #7790] Set options in ConfigLoader earlier

Transferring options to the ConfigLoader must be done before we
validate the --parallel flag against configuration. Since we cache
the configuration when reading it to perform validation, the
cached configuration will not take all the given options into
account, which leads to different behavior when running the actual
inspection if the --parallel flag is given.

CHANGELOG.md

@@ -5,6 +5,7 @@
 ### Bug fixes
 
 * [#7882](https://github.com/rubocop-hq/rubocop/pull/7882): Fix `Style/CaseEquality` when `AllowOnConstant` is `true` and the method receiver is implicit. ([@rafaelfranca][])
+* [#7790](https://github.com/rubocop-hq/rubocop/issues/7790): Fix `--parallel` and `--ignore-parent-exclusion` combination. ([@jonas054][])
 
 ### Changes
 

lib/rubocop/cli.rb

@@ -35,6 +35,7 @@ def run(args = ARGV)
       if @options[:init]
         run_command(:init)
       else
+        set_options_to_config_loader
         validate_options_vs_config
         act_on_options
         apply_default_formatter
@@ -83,8 +84,6 @@ def validate_options_vs_config
     end
 
     def act_on_options
-      set_options_to_config_loader
-
       @config_store.options_config = @options[:config] if @options[:config]
       @config_store.force_default_config! if @options[:force_default_config]
 

spec/rubocop/cli/cli_options_spec.rb

@@ -47,6 +47,25 @@
           expect($stdout.string).not_to match(/Running parallel inspection/)
         end
       end
+
+      context 'in combination with --ignore-parent-exclusion' do
+        before do
+          create_file('.rubocop.yml', ['AllCops:',
+                                       '  Exclude:',
+                                       '    - subdir/*'])
+          create_file('subdir/.rubocop.yml', ['AllCops:',
+                                              '  Exclude:',
+                                              '    - foobar'])
+          create_file('subdir/test.rb', 'puts 1')
+        end
+
+        it 'does ignore the exclusion in the parent directory configuration' do
+          Dir.chdir('subdir') do
+            cli.run ['--parallel', '--ignore-parent-exclusion']
+          end
+          expect($stdout.string).to match(/Inspecting 1 file/)
+        end
+      end
     end
   end