Enable even more frozen string in app/controllers

Enables frozen string for some vestigial files as
well as the following:

* app/controllers/projects/**/*.rb
* app/controllers/sherlock/**/*.rb
* app/controllers/snippets/**/*.rb
* app/controllers/users/**/*.rb

Partially addresses #47424.

app/controllers/concerns/invalid_utf8_error_handler.rb

+# frozen_string_literal: true
+
 module InvalidUTF8ErrorHandler
   extend ActiveSupport::Concern
 

app/controllers/projects/application_controller.rb

+# frozen_string_literal: true
+
 class Projects::ApplicationController < ApplicationController
   include CookiesHelper
   include RoutableActions

app/controllers/projects/artifacts_controller.rb

+# frozen_string_literal: true
+
 class Projects::ArtifactsController < Projects::ApplicationController
   include ExtractsPath
   include RendersBlob

app/controllers/projects/autocomplete_sources_controller.rb

+# frozen_string_literal: true
+
 class Projects::AutocompleteSourcesController < Projects::ApplicationController
   before_action :load_autocomplete_service, except: [:members]
 

app/controllers/projects/avatars_controller.rb

+# frozen_string_literal: true
+
 class Projects::AvatarsController < Projects::ApplicationController
   include SendsBlob
 

app/controllers/projects/badges_controller.rb

+# frozen_string_literal: true
+
 class Projects::BadgesController < Projects::ApplicationController
   layout 'project_settings'
   before_action :authorize_admin_project!, only: [:index]

app/controllers/projects/blame_controller.rb

+# frozen_string_literal: true
+
 # Controller for viewing a file's blame
 class Projects::BlameController < Projects::ApplicationController
   include ExtractsPath

app/controllers/projects/blob_controller.rb

+# frozen_string_literal: true
+
 # Controller for viewing a file's blame
 class Projects::BlobController < Projects::ApplicationController
   include ExtractsPath

app/controllers/projects/boards_controller.rb

+# frozen_string_literal: true
+
 class Projects::BoardsController < Projects::ApplicationController
   include BoardsResponses
   include IssuableCollections

app/controllers/projects/branches_controller.rb

+# frozen_string_literal: true
+
 class Projects::BranchesController < Projects::ApplicationController
   include ActionView::Helpers::SanitizeHelper
   include SortingHelper

app/controllers/projects/build_artifacts_controller.rb

+# frozen_string_literal: true
+
 class Projects::BuildArtifactsController < Projects::ApplicationController
   include ExtractsPath
   include RendersBlob

app/controllers/projects/builds_controller.rb

+# frozen_string_literal: true
+
 class Projects::BuildsController < Projects::ApplicationController
   before_action :authorize_read_build!
 

app/controllers/projects/ci/lints_controller.rb

+# frozen_string_literal: true
+
 class Projects::Ci::LintsController < Projects::ApplicationController
   before_action :authorize_create_pipeline!
 

app/controllers/projects/clusters/applications_controller.rb

+# frozen_string_literal: true
+
 class Projects::Clusters::ApplicationsController < Projects::ApplicationController
   before_action :cluster
   before_action :application_class, only: [:create]

app/controllers/projects/clusters_controller.rb

+# frozen_string_literal: true
+
 class Projects::ClustersController < Projects::ApplicationController
   before_action :cluster, except: [:index, :new, :create_gcp, :create_user]
   before_action :authorize_read_cluster!

app/controllers/projects/commit_controller.rb

+# frozen_string_literal: true
+
 # Controller for a specific Commit
 #
 # Not to be confused with CommitsController, plural.

app/controllers/projects/commits_controller.rb

+# frozen_string_literal: true
+
 require "base64"
 
 class Projects::CommitsController < Projects::ApplicationController

app/controllers/projects/compare_controller.rb

+# frozen_string_literal: true
+
 require 'addressable/uri'
 
 class Projects::CompareController < Projects::ApplicationController

app/controllers/projects/cycle_analytics/events_controller.rb

+# frozen_string_literal: true
+
 module Projects
   module CycleAnalytics
     class EventsController < Projects::ApplicationController

app/controllers/projects/cycle_analytics_controller.rb

+# frozen_string_literal: true
+
 class Projects::CycleAnalyticsController < Projects::ApplicationController
   include ActionView::Helpers::DateHelper
   include ActionView::Helpers::TextHelper

app/controllers/projects/deploy_keys_controller.rb

+# frozen_string_literal: true
+
 class Projects::DeployKeysController < Projects::ApplicationController
   include RepositorySettingsRedirect
   respond_to :html

app/controllers/projects/deploy_tokens_controller.rb

+# frozen_string_literal: true
+
 class Projects::DeployTokensController < Projects::ApplicationController
   before_action :authorize_admin_project!
 

app/controllers/projects/deployments_controller.rb

+# frozen_string_literal: true
+
 class Projects::DeploymentsController < Projects::ApplicationController
   before_action :authorize_read_environment!
   before_action :authorize_read_deployment!

app/controllers/projects/discussions_controller.rb

+# frozen_string_literal: true
+
 class Projects::DiscussionsController < Projects::ApplicationController
   include NotesHelper
   include RendersNotes

app/controllers/projects/environments_controller.rb

+# frozen_string_literal: true
+
 class Projects::EnvironmentsController < Projects::ApplicationController
   layout 'project'
   before_action :authorize_read_environment!

app/controllers/projects/find_file_controller.rb

+# frozen_string_literal: true
+
 # Controller for viewing a repository's file structure
 class Projects::FindFileController < Projects::ApplicationController
   include ExtractsPath

app/controllers/projects/forks_controller.rb

+# frozen_string_literal: true
+
 class Projects::ForksController < Projects::ApplicationController
   include ContinueParams
 

app/controllers/projects/git_http_client_controller.rb

+# frozen_string_literal: true
+
 # This file should be identical in GitLab Community Edition and Enterprise Edition
 
 class Projects::GitHttpClientController < Projects::ApplicationController

app/controllers/projects/git_http_controller.rb

+# frozen_string_literal: true
+
 class Projects::GitHttpController < Projects::GitHttpClientController
   include WorkhorseRequest
 

app/controllers/projects/graphs_controller.rb

+# frozen_string_literal: true
+
 class Projects::GraphsController < Projects::ApplicationController
   include ExtractsPath
 

app/controllers/projects/group_links_controller.rb

+# frozen_string_literal: true
+
 class Projects::GroupLinksController < Projects::ApplicationController
   layout 'project_settings'
   before_action :authorize_admin_project!

app/controllers/projects/hook_logs_controller.rb

+# frozen_string_literal: true
+
 class Projects::HookLogsController < Projects::ApplicationController
   include HooksExecution
 

app/controllers/projects/hooks_controller.rb

+# frozen_string_literal: true
+
 class Projects::HooksController < Projects::ApplicationController
   include HooksExecution
 

app/controllers/projects/imports_controller.rb

+# frozen_string_literal: true
+
 class Projects::ImportsController < Projects::ApplicationController
   include ContinueParams
 

app/controllers/projects/issues_controller.rb

+# frozen_string_literal: true
+
 class Projects::IssuesController < Projects::ApplicationController
   include RendersNotes
   include ToggleSubscriptionAction

app/controllers/projects/jobs_controller.rb

+# frozen_string_literal: true
+
 class Projects::JobsController < Projects::ApplicationController
   include SendFileUpload
 

app/controllers/projects/labels_controller.rb

+# frozen_string_literal: true
+
 class Projects::LabelsController < Projects::ApplicationController
   include ToggleSubscriptionAction
 
@@ -138,12 +140,7 @@ class Projects::LabelsController < Projects::ApplicationController
   end
 
   def flash_notice_for(label, group)
-    notice = ''.html_safe
-    notice << label.title
-    notice << ' promoted to '
-    notice << view_context.link_to('<u>group label</u>'.html_safe, group_labels_path(group))
-    notice << '.'
-    notice
+    ''.html_safe + "#{label.title} promoted to " + view_context.link_to('<u>group label</u>'.html_safe, group_labels_path(group)) + '.'
   end
 
   protected

app/controllers/projects/lfs_api_controller.rb

+# frozen_string_literal: true
+
 class Projects::LfsApiController < Projects::GitHttpClientController
   include LfsRequest
 

app/controllers/projects/lfs_locks_api_controller.rb

+# frozen_string_literal: true
+
 class Projects::LfsLocksApiController < Projects::GitHttpClientController
   include LfsRequest
 

app/controllers/projects/lfs_storage_controller.rb

+# frozen_string_literal: true
+
 class Projects::LfsStorageController < Projects::GitHttpClientController
   include LfsRequest
   include WorkhorseRequest

app/controllers/projects/mattermosts_controller.rb

+# frozen_string_literal: true
+
 class Projects::MattermostsController < Projects::ApplicationController
   include TriggersHelper
   include ActionView::Helpers::AssetUrlHelper

app/controllers/projects/merge_requests/application_controller.rb

+# frozen_string_literal: true
+
 class Projects::MergeRequests::ApplicationController < Projects::ApplicationController
   before_action :check_merge_requests_available!
   before_action :merge_request

app/controllers/projects/merge_requests/conflicts_controller.rb

+# frozen_string_literal: true
+
 class Projects::MergeRequests::ConflictsController < Projects::MergeRequests::ApplicationController
   include IssuableActions
 

app/controllers/projects/merge_requests/creations_controller.rb

+# frozen_string_literal: true
+
 class Projects::MergeRequests::CreationsController < Projects::MergeRequests::ApplicationController
   include DiffForPath
   include DiffHelper

app/controllers/projects/merge_requests/diffs_controller.rb

+# frozen_string_literal: true
+
 class Projects::MergeRequests::DiffsController < Projects::MergeRequests::ApplicationController
   include DiffForPath
   include DiffHelper

app/controllers/projects/merge_requests_controller.rb

+# frozen_string_literal: true
+
 class Projects::MergeRequestsController < Projects::MergeRequests::ApplicationController
   include ToggleSubscriptionAction
   include IssuableActions

app/controllers/projects/milestones_controller.rb

+# frozen_string_literal: true
+
 class Projects::MilestonesController < Projects::ApplicationController
   include Gitlab::Utils::StrongMemoize
   include MilestoneActions
@@ -91,12 +93,7 @@ class Projects::MilestonesController < Projects::ApplicationController
   end
 
   def flash_notice_for(milestone, group)
-    notice = ''.html_safe
-    notice << milestone.title
-    notice << ' promoted to '
-    notice << view_context.link_to('<u>group milestone</u>'.html_safe, group_milestone_path(group, milestone.iid))
-    notice << '.'
-    notice
+    ''.html_safe + "#{milestone.title} promoted to " + view_context.link_to('<u>group milestone</u>'.html_safe, group_milestone_path(group, milestone.iid)) + '.'
   end
 
   def destroy

app/controllers/projects/mirrors_controller.rb

+# frozen_string_literal: true
+
 class Projects::MirrorsController < Projects::ApplicationController
   include RepositorySettingsRedirect
 

app/controllers/projects/network_controller.rb

+# frozen_string_literal: true
+
 class Projects::NetworkController < Projects::ApplicationController
   include ExtractsPath
   include ApplicationHelper

app/controllers/projects/notes_controller.rb

+# frozen_string_literal: true
+
 class Projects::NotesController < Projects::ApplicationController
   include RendersNotes
   include NotesActions

app/controllers/projects/pages_controller.rb

+# frozen_string_literal: true
+
 class Projects::PagesController < Projects::ApplicationController
   layout 'project_settings'
 

app/controllers/projects/pages_domains_controller.rb

+# frozen_string_literal: true
+
 class Projects::PagesDomainsController < Projects::ApplicationController
   layout 'project_settings'
 

app/controllers/projects/pipeline_schedules_controller.rb

+# frozen_string_literal: true
+
 class Projects::PipelineSchedulesController < Projects::ApplicationController
   before_action :schedule, except: [:index, :new, :create]
 

app/controllers/projects/pipelines_controller.rb

+# frozen_string_literal: true
+
 class Projects::PipelinesController < Projects::ApplicationController
   before_action :whitelist_query_limiting, only: [:create, :retry]
   before_action :pipeline, except: [:index, :new, :create, :charts]

app/controllers/projects/pipelines_settings_controller.rb

+# frozen_string_literal: true
+
 class Projects::PipelinesSettingsController < Projects::ApplicationController
   before_action :authorize_admin_pipeline!
 

app/controllers/projects/project_members_controller.rb

+# frozen_string_literal: true
+
 class Projects::ProjectMembersController < Projects::ApplicationController
   include MembershipActions
   include MembersPresentation

app/controllers/projects/prometheus/metrics_controller.rb

+# frozen_string_literal: true
+
 module Projects
   module Prometheus
     class MetricsController < Projects::ApplicationController

app/controllers/projects/protected_branches_controller.rb

+# frozen_string_literal: true
+
 class Projects::ProtectedBranchesController < Projects::ProtectedRefsController
   protected
 

app/controllers/projects/protected_refs_controller.rb

+# frozen_string_literal: true
+
 class Projects::ProtectedRefsController < Projects::ApplicationController
   include RepositorySettingsRedirect
 

app/controllers/projects/protected_tags_controller.rb

+# frozen_string_literal: true
+
 class Projects::ProtectedTagsController < Projects::ProtectedRefsController
   protected
 

app/controllers/projects/raw_controller.rb

+# frozen_string_literal: true
+
 # Controller for viewing a file's raw
 class Projects::RawController < Projects::ApplicationController
   include ExtractsPath

app/controllers/projects/refs_controller.rb

+# frozen_string_literal: true
+
 class Projects::RefsController < Projects::ApplicationController
   include ExtractsPath
   include TreeHelper

app/controllers/projects/registry/application_controller.rb

+# frozen_string_literal: true
+
 module Projects
   module Registry
     class ApplicationController < Projects::ApplicationController

app/controllers/projects/registry/repositories_controller.rb

+# frozen_string_literal: true
+
 module Projects
   module Registry
     class RepositoriesController < ::Projects::Registry::ApplicationController

app/controllers/projects/registry/tags_controller.rb

+# frozen_string_literal: true
+
 module Projects
   module Registry
     class TagsController < ::Projects::Registry::ApplicationController

app/controllers/projects/releases_controller.rb

+# frozen_string_literal: true
+
 class Projects::ReleasesController < Projects::ApplicationController
   # Authorize
   before_action :require_non_empty_project

app/controllers/projects/repositories_controller.rb

+# frozen_string_literal: true
+
 class Projects::RepositoriesController < Projects::ApplicationController
   include ExtractsPath
 

app/controllers/projects/runner_projects_controller.rb

+# frozen_string_literal: true
+
 class Projects::RunnerProjectsController < Projects::ApplicationController
   before_action :authorize_admin_build!
 

app/controllers/projects/runners_controller.rb

+# frozen_string_literal: true
+
 class Projects::RunnersController < Projects::ApplicationController
   before_action :authorize_admin_build!
   before_action :runner, only: [:edit, :update, :destroy, :pause, :resume, :show]

app/controllers/projects/services_controller.rb

+# frozen_string_literal: true
+
 class Projects::ServicesController < Projects::ApplicationController
   include ServiceParams
 

app/controllers/projects/settings/ci_cd_controller.rb

+# frozen_string_literal: true
+
 module Projects
   module Settings
     class CiCdController < Projects::ApplicationController

app/controllers/projects/settings/integrations_controller.rb

+# frozen_string_literal: true
+
 module Projects
   module Settings
     class IntegrationsController < Projects::ApplicationController

app/controllers/projects/settings/repository_controller.rb

+# frozen_string_literal: true
+
 module Projects
   module Settings
     class RepositoryController < Projects::ApplicationController

app/controllers/projects/snippets_controller.rb

+# frozen_string_literal: true
+
 class Projects::SnippetsController < Projects::ApplicationController
   include RendersNotes
   include ToggleAwardEmoji

app/controllers/projects/tags_controller.rb

+# frozen_string_literal: true
+
 class Projects::TagsController < Projects::ApplicationController
   include SortingHelper
 

app/controllers/projects/templates_controller.rb

+# frozen_string_literal: true
+
 class Projects::TemplatesController < Projects::ApplicationController
   before_action :authenticate_user!, :get_template_class
 

app/controllers/projects/todos_controller.rb

+# frozen_string_literal: true
+
 class Projects::TodosController < Projects::ApplicationController
   include Gitlab::Utils::StrongMemoize
   include TodosActions

app/controllers/projects/tree_controller.rb

+# frozen_string_literal: true
+
 # Controller for viewing a repository's file structure
 class Projects::TreeController < Projects::ApplicationController
   include ExtractsPath

app/controllers/projects/triggers_controller.rb

+# frozen_string_literal: true
+
 class Projects::TriggersController < Projects::ApplicationController
   before_action :authorize_admin_build!
   before_action :authorize_manage_trigger!, except: [:index, :create]

app/controllers/projects/uploads_controller.rb

+# frozen_string_literal: true
+
 class Projects::UploadsController < Projects::ApplicationController
   include UploadsActions
   include WorkhorseRequest

app/controllers/projects/variables_controller.rb

+# frozen_string_literal: true
+
 class Projects::VariablesController < Projects::ApplicationController
   before_action :authorize_admin_build!
 

app/controllers/projects/wikis_controller.rb

+# frozen_string_literal: true
+
 class Projects::WikisController < Projects::ApplicationController
   include PreviewMarkdown
   include Gitlab::Utils::StrongMemoize

app/controllers/sherlock/application_controller.rb

+# frozen_string_literal: true
+
 module Sherlock
   class ApplicationController < ::ApplicationController
     before_action :find_transaction

app/controllers/sherlock/file_samples_controller.rb

+# frozen_string_literal: true
+
 module Sherlock
   class FileSamplesController < Sherlock::ApplicationController
     def show

app/controllers/sherlock/queries_controller.rb

+# frozen_string_literal: true
+
 module Sherlock
   class QueriesController < Sherlock::ApplicationController
     def show

app/controllers/sherlock/transactions_controller.rb

+# frozen_string_literal: true
+
 module Sherlock
   class TransactionsController < Sherlock::ApplicationController
     def index

app/controllers/snippets/notes_controller.rb

+# frozen_string_literal: true
+
 class Snippets::NotesController < ApplicationController
   include NotesActions
   include ToggleAwardEmoji

app/controllers/users/terms_controller.rb

+# frozen_string_literal: true
+
 module Users
   class TermsController < ApplicationController
     include InternalRedirect

changelogs/unreleased/frozen-string-app-controllers-much-more.yml

+---
+title: Enable even more frozen string in app/controllers
+merge_request:
+author: gfyoung
+type: performance