Fix all rubocop warnings

app/models/account_alias.rb

@@ -25,7 +25,7 @@ class AccountAlias < ApplicationRecord
 
   def acct=(val)
     val = val.to_s.strip
-    super(val.start_with?('@') ? val[1..-1] : val)
+    super(val.start_with?('@') ? val[1..] : val)
   end
 
   def pretty_acct

app/models/account_warning.rb

@@ -16,6 +16,7 @@
 #
 
 class AccountWarning < ApplicationRecord
+  # rubocop:disable Lint/RedundantCopDisableDirective, Layout/FirstHashElementIndentation
   enum action: {
     none:                       0,
     disable:                    1_000,
@@ -25,6 +26,7 @@ class AccountWarning < ApplicationRecord
     silence:                    3_000,
     suspend:                    4_000,
   }, _suffix: :action
+  # rubocop:enable Lint/RedundantCopDisableDirective, Layout/FirstHashElementIndentation
 
   belongs_to :account, inverse_of: :account_warnings
   belongs_to :target_account, class_name: 'Account', inverse_of: :strikes

app/models/concerns/account_interactions.rb

@@ -1,6 +1,6 @@
 # frozen_string_literal: true
 
-module AccountInteractions
+module AccountInteractions # rubocop:disable Metrics/ModuleLength
   extend ActiveSupport::Concern
 
   class_methods do

app/models/concerns/expireable.rb

@@ -17,7 +17,7 @@ module Expireable
     end
 
     def expires_in=(interval)
-      self.expires_at = interval.present? ? interval.to_i.seconds.from_now : nil 
+      self.expires_at = interval.present? ? interval.to_i.seconds.from_now : nil
       @expires_in     = interval
     end
 

app/models/custom_emoji.rb

@@ -46,7 +46,7 @@ class CustomEmoji < ApplicationRecord
   scope :local, -> { where(domain: nil) }
   scope :remote, -> { where.not(domain: nil) }
   scope :alphabetic, -> { order(domain: :asc, shortcode: :asc) }
-  scope :by_domain_and_subdomains, ->(domain) { where(domain: domain).or(where(arel_table[:domain].matches('%.' + domain))) }
+  scope :by_domain_and_subdomains, ->(domain) { where(domain: domain).or(where(arel_table[:domain].matches("%.#{domain}"))) }
   scope :listed, -> { local.where(disabled: false).where(visible_in_picker: true) }
 
   remotable_attachment :image, LIMIT

app/models/domain_block.rb

@@ -63,7 +63,7 @@ class DomainBlock < ApplicationRecord
 
       uri      = Addressable::URI.new.tap { |u| u.host = domain.strip.gsub(/[\/]/, '') }
       segments = uri.normalized_host.split('.')
-      variants = segments.map.with_index { |_, i| segments[i..-1].join('.') }
+      variants = segments.map.with_index { |_, i| segments[i..].join('.') }
 
       where(domain: variants).order(Arel.sql('char_length(domain) desc')).first
     rescue Addressable::URI::InvalidURIError, IDN::Idna::IdnaError

app/models/preview_card_provider.rb

@@ -52,6 +52,6 @@ class PreviewCardProvider < ApplicationRecord
 
   def self.matching_domain(domain)
     segments = domain.split('.')
-    where(domain: segments.map.with_index { |_, i| segments[i..-1].join('.') }).order(Arel.sql('char_length(domain) desc')).first
+    where(domain: segments.map.with_index { |_, i| segments[i..].join('.') }).order(Arel.sql('char_length(domain) desc')).first
   end
 end