Migrate glitch-soc keyword mutes to Mastodon's

Completely remove glitch-soc's Keyword Mutes, migrate
existing database records to CustomFilters.

Handling of client-side filters is still not implemented
in the glitch-soc front-end.

app/controllers/settings/keyword_mutes_controller.rb

@@ -1,61 +0,0 @@
-# frozen_string_literal: true
-
-class Settings::KeywordMutesController < Settings::BaseController
-  before_action :load_keyword_mute, only: [:edit, :update, :destroy]
-
-  def index
-    @keyword_mutes = paginated_keyword_mutes_for_account
-  end
-
-  def new
-    @keyword_mute = keyword_mutes_for_account.build
-  end
-
-  def create
-    @keyword_mute = keyword_mutes_for_account.create(keyword_mute_params)
-
-    if @keyword_mute.persisted?
-      redirect_to settings_keyword_mutes_path, notice: I18n.t('generic.changes_saved_msg')
-    else
-      render :new
-    end
-  end
-
-  def update
-    if @keyword_mute.update(keyword_mute_params)
-      redirect_to settings_keyword_mutes_path, notice: I18n.t('generic.changes_saved_msg')
-    else
-      render :edit
-    end
-  end
-
-  def destroy
-    @keyword_mute.destroy!
-
-    redirect_to settings_keyword_mutes_path, notice: I18n.t('generic.changes_saved_msg')
-  end
-
-  def destroy_all
-    keyword_mutes_for_account.delete_all
-
-    redirect_to settings_keyword_mutes_path, notice: I18n.t('generic.changes_saved_msg')
-  end
-
-  private
-
-  def keyword_mutes_for_account
-    Glitch::KeywordMute.where(account: current_account)
-  end
-
-  def load_keyword_mute
-    @keyword_mute = keyword_mutes_for_account.find(params[:id])
-  end
-
-  def keyword_mute_params
-    params.require(:keyword_mute).permit(:keyword, :whole_word, :apply_to_mentions)
-  end
-
-  def paginated_keyword_mutes_for_account
-    keyword_mutes_for_account.order(:keyword).page params[:page]
-  end
-end

app/lib/feed_manager.rb

@@ -153,7 +153,6 @@ class FeedManager
   def filter_from_home?(status, receiver_id)
     return false if receiver_id == status.account_id
     return true  if status.reply? && (status.in_reply_to_id.nil? || status.in_reply_to_account_id.nil?)
-    return true  if keyword_filter_from_home?(status, receiver_id)
     return true  if phrase_filtered?(status, receiver_id, :home)
 
     check_for_blocks = status.mentions.pluck(:account_id)
@@ -181,26 +180,6 @@ class FeedManager
     false
   end
 
-  def keyword_filter_from_home?(status, receiver_id)
-    # If this status mentions the receiver, use the mentions scope: it's
-    # possible that the status will show up in the receiver's mentions, which
-    # means it ought to show up in the home feed as well.
-    #
-    # If it doesn't mention the receiver but is still headed for the home feed,
-    # use the home feed scope.
-    scope = if status.mentions.pluck(:account_id).include?(receiver_id)
-              Glitch::KeywordMute::Scopes::Mentions
-            else
-              Glitch::KeywordMute::Scopes::HomeFeed
-            end
-
-    return true if keyword_filter?(status, receiver_id, scope)
-  end
-
-  def keyword_filter?(status, receiver_id, scope)
-    Glitch::KeywordMuteHelper.new(receiver_id).matches?(status, scope)
-  end
-
   def filter_from_mentions?(status, receiver_id)
     return true if receiver_id == status.account_id
     return true if phrase_filtered?(status, receiver_id, :notifications)
@@ -213,7 +192,6 @@ class FeedManager
 
     should_filter   = blocks_or_mutes?(receiver_id, check_for_blocks, :mentions)                                                         # Filter if it's from someone I blocked, in reply to someone I blocked, or mentioning someone I blocked (or muted)
     should_filter ||= (status.account.silenced? && !Follow.where(account_id: receiver_id, target_account_id: status.account_id).exists?) # of if the account is silenced and I'm not following them
-    should_filter ||= keyword_filter?(status, receiver_id, Glitch::KeywordMute::Scopes::Mentions)                                        # or if the mention contains a muted keyword
 
     should_filter
   end

app/models/glitch.rb

@@ -1,7 +0,0 @@
-# frozen_string_literal: true
-
-module Glitch
-  def self.table_name_prefix
-    'glitch_'
-  end
-end

app/models/glitch/keyword_mute.rb

@@ -1,123 +0,0 @@
-# frozen_string_literal: true
-# == Schema Information
-#
-# Table name: glitch_keyword_mutes
-#
-#  id                :bigint(8)        not null, primary key
-#  account_id        :bigint(8)        not null
-#  keyword           :string           not null
-#  whole_word        :boolean          default(TRUE), not null
-#  created_at        :datetime         not null
-#  updated_at        :datetime         not null
-#  apply_to_mentions :boolean          default(TRUE), not null
-#
-
-class Glitch::KeywordMute < ApplicationRecord
-  belongs_to :account, required: true
-
-  validates_presence_of :keyword
-
-  after_commit :invalidate_cached_matchers
-
-  module Scopes
-    Unscoped = 0b00
-    HomeFeed = 0b01
-    Mentions = 0b10
-  end
-
-  def self.text_matcher_for(account_id)
-    TextMatcher.new(account_id)
-  end
-
-  def self.tag_matcher_for(account_id)
-    TagMatcher.new(account_id)
-  end
-
-  def scope
-    s = Scopes::Unscoped
-    s |= Scopes::HomeFeed
-    s |= Scopes::Mentions if apply_to_mentions?
-    s
-  end
-
-  private
-
-  def invalidate_cached_matchers
-    Rails.cache.delete(TextMatcher.cache_key(account_id))
-    Rails.cache.delete(TagMatcher.cache_key(account_id))
-  end
-
-  class CachedKeywordMute
-    attr_reader :keyword
-    attr_reader :whole_word
-    attr_reader :scope
-
-    def initialize(keyword, whole_word, scope)
-      @keyword = keyword
-      @whole_word = whole_word
-      @scope = scope
-    end
-
-    def boundary_regex_for_keyword
-      sb = keyword =~ /\A[[:word:]]/ ? '\b' : ''
-      eb = keyword =~ /[[:word:]]\Z/ ? '\b' : ''
-
-      /(?mix:#{sb}#{Regexp.escape(keyword)}#{eb})/
-    end
-
-    def matches?(str, required_scope)
-      ((required_scope & scope) == required_scope) && \
-        str =~ (whole_word ? boundary_regex_for_keyword : /#{Regexp.escape(keyword)}/i)
-    end
-  end
-
-  class Matcher
-    attr_reader :account_id
-    attr_reader :keywords
-
-    def initialize(account_id)
-      @account_id = account_id
-      @keywords = Rails.cache.fetch(self.class.cache_key(account_id)) { fetch_keywords }
-    end
-
-    protected
-
-    def fetch_keywords
-      Glitch::KeywordMute.select(:whole_word, :keyword, :apply_to_mentions)
-        .where(account_id: account_id)
-        .map { |kw| CachedKeywordMute.new(transform_keyword(kw.keyword), kw.whole_word, kw.scope) }
-    end
-
-    def transform_keyword(keyword)
-      keyword
-    end
-  end
-
-  class TextMatcher < Matcher
-    def self.cache_key(account_id)
-      format('keyword_mutes:regex:text:%s', account_id)
-    end
-
-    def matches?(str, scope)
-      keywords.any? { |kw| kw.matches?(str, scope) }
-    end
-  end
-
-  class TagMatcher < Matcher
-    def self.cache_key(account_id)
-      format('keyword_mutes:regex:tag:%s', account_id)
-    end
-
-    def matches?(tags, scope)
-      tags.pluck(:name).any? do |n|
-        keywords.any? { |kw| kw.matches?(n, scope) }
-      end
-    end
-
-    protected
-
-    def transform_keyword(kw)
-      Tag::HASHTAG_RE =~ kw ? $1 : kw
-    end
-  end
-end

app/models/glitch/keyword_mute_helper.rb

@@ -1,27 +0,0 @@
-require 'html2text'
-
-class Glitch::KeywordMuteHelper
-  attr_reader :text_matcher
-  attr_reader :tag_matcher
-
-  def initialize(receiver_id)
-    @text_matcher   = Glitch::KeywordMute.text_matcher_for(receiver_id)
-    @tag_matcher    = Glitch::KeywordMute.tag_matcher_for(receiver_id)
-  end
-
-  def matches?(status, scope)
-    matchers_match?(status, scope) || (status.reblog? && matchers_match?(status.reblog, scope))
-  end
-
-  private
-
-  def matchers_match?(status, scope)
-    text_matcher.matches?(prepare_text(status.text), scope) ||
-      text_matcher.matches?(prepare_text(status.spoiler_text), scope) ||
-      tag_matcher.matches?(status.tags, scope)
-  end
-
-  def prepare_text(text)
-    Html2Text.convert(text)
-  end
-end

config/navigation.rb

@@ -7,7 +7,6 @@ SimpleNavigation::Configuration.run do |navigation|
     primary.item :settings, safe_join([fa_icon('cog fw'), t('settings.settings')]), settings_profile_url do |settings|
       settings.item :profile, safe_join([fa_icon('user fw'), t('settings.edit_profile')]), settings_profile_url, highlights_on: %r{/settings/profile|/settings/migration}
       settings.item :preferences, safe_join([fa_icon('sliders fw'), t('settings.preferences')]), settings_preferences_url
-      settings.item :keyword_mutes, safe_join([fa_icon('volume-off fw'), t('settings.keyword_mutes')]), settings_keyword_mutes_url
       settings.item :notifications, safe_join([fa_icon('bell fw'), t('settings.notifications')]), settings_notifications_url
       settings.item :password, safe_join([fa_icon('lock fw'), t('auth.security')]), edit_user_registration_url, highlights_on: %r{/auth/edit|/settings/delete}
       settings.item :two_factor_authentication, safe_join([fa_icon('mobile fw'), t('settings.two_factor_authentication')]), settings_two_factor_authentication_url, highlights_on: %r{/settings/two_factor_authentication}

config/routes.rb

@@ -77,12 +77,6 @@ Rails.application.routes.draw do
   namespace :settings do
     resource :profile, only: [:show, :update]
 
-    resources :keyword_mutes do
-      collection do
-        delete :destroy_all
-      end
-    end
-
     resource :preferences, only: [:show, :update]
     resource :notifications, only: [:show, :update]
     resource :import, only: [:show, :create]

db/migrate/20180707193142_migrate_filters.rb

@@ -0,0 +1,54 @@
+class MigrateFilters < ActiveRecord::Migration[5.2]
+  class GlitchKeywordMute < ApplicationRecord
+    # Dummy class, as we removed Glitch::KeywordMute
+    belongs_to :account, required: true
+    validates_presence_of :keyword
+  end
+
+  class CustomFilter < ApplicationRecord
+    # Dummy class, in case CustomFilter gets altered in the future
+    belongs_to :account
+    validates :phrase, :context, presence: true
+
+    before_validation :clean_up_contexts
+
+    private
+
+    def clean_up_contexts
+      self.context = Array(context).map(&:strip).map(&:presence).compact
+    end
+  end
+
+  disable_ddl_transaction!
+
+  def up
+    GlitchKeywordMute.find_each do |filter|
+      filter.account.custom_filters.create!(
+        phrase: filter.keyword,
+        context: filter.apply_to_mentions ? %w(home public notifications) : %w(home public),
+        whole_word: filter.whole_word,
+        irreversible: true)
+    end
+
+    drop_table :glitch_keyword_mutes
+  end
+
+  def down
+    create_table "glitch_keyword_mutes" do |t|
+      t.references :account, null: false
+      t.string :keyword, null: false
+      t.boolean :whole_word, default: true, null: false
+      t.boolean :apply_to_mentions, default: true, null: false
+      t.timestamps
+    end
+
+    add_foreign_key :glitch_keyword_mutes, :accounts, on_delete: :cascade
+
+    CustomFilter.where(irreversible: true).find_each do |filter|
+      GlitchKeywordMute.where(account: filter.account).create!(
+        keyword: filter.phrase,
+        whole_word: filter.whole_word,
+        apply_to_mentions: filter.context.include?('notifications'))
+    end
+  end
+end

db/schema.rb

@@ -10,7 +10,7 @@
 #
 # It's strongly recommended that you check this file into your version control system.
 
-ActiveRecord::Schema.define(version: 2018_07_07_154237) do
+ActiveRecord::Schema.define(version: 2018_07_07_193142) do
 
   # These are extensions that must be enabled in order to support this database
   enable_extension "plpgsql"
@@ -211,16 +211,6 @@ ActiveRecord::Schema.define(version: 2018_07_07_154237) do
     t.index ["account_id", "target_account_id"], name: "index_follows_on_account_id_and_target_account_id", unique: true
   end
 
-  create_table "glitch_keyword_mutes", force: :cascade do |t|
-    t.bigint "account_id", null: false
-    t.string "keyword", null: false
-    t.boolean "whole_word", default: true, null: false
-    t.datetime "created_at", null: false
-    t.datetime "updated_at", null: false
-    t.boolean "apply_to_mentions", default: true, null: false
-    t.index ["account_id"], name: "index_glitch_keyword_mutes_on_account_id"
-  end
-
   create_table "identities", id: :serial, force: :cascade do |t|
     t.integer "user_id"
     t.string "provider", default: "", null: false
@@ -603,7 +593,6 @@ ActiveRecord::Schema.define(version: 2018_07_07_154237) do
   add_foreign_key "follow_requests", "accounts", name: "fk_76d644b0e7", on_delete: :cascade
   add_foreign_key "follows", "accounts", column: "target_account_id", name: "fk_745ca29eac", on_delete: :cascade
   add_foreign_key "follows", "accounts", name: "fk_32ed1b5560", on_delete: :cascade
-  add_foreign_key "glitch_keyword_mutes", "accounts", on_delete: :cascade
   add_foreign_key "identities", "users", on_delete: :cascade
   add_foreign_key "imports", "accounts", name: "fk_6db1b6e408", on_delete: :cascade
   add_foreign_key "invites", "users", on_delete: :cascade

spec/controllers/settings/keyword_mutes_controller_spec.rb

@@ -1,5 +0,0 @@
-require 'rails_helper'
-
-RSpec.describe Settings::KeywordMutesController, type: :controller do
-
-end

spec/fabricators/glitch_keyword_mute_fabricator.rb

@@ -1,2 +0,0 @@
-Fabricator('Glitch::KeywordMute') do
-end

spec/lib/feed_manager_spec.rb

@@ -134,68 +134,6 @@ RSpec.describe FeedManager do
         expect(FeedManager.instance.filter?(:home, reblog, alice.id)).to be true
       end
 
-      it 'returns true for a status containing a muted keyword' do
-        Fabricate('Glitch::KeywordMute', account: alice, keyword: 'take')
-        status = Fabricate(:status, text: 'This is a hot take', account: bob)
-
-        expect(FeedManager.instance.filter?(:home, status, alice.id)).to be true
-      end
-
-      it 'returns true for a reply containing a muted keyword' do
-        Fabricate('Glitch::KeywordMute', account: alice, keyword: 'take')
-        s1 = Fabricate(:status, text: 'Something', account: alice)
-        s2 = Fabricate(:status, text: 'This is a hot take', thread: s1, account: bob)
-
-        expect(FeedManager.instance.filter?(:home, s2, alice.id)).to be true
-      end
-
-      it 'returns true for a status whose spoiler text contains a muted keyword' do
-        Fabricate('Glitch::KeywordMute', account: alice, keyword: 'take')
-        status = Fabricate(:status, spoiler_text: 'This is a hot take', account: bob)
-
-        expect(FeedManager.instance.filter?(:home, status, alice.id)).to be true
-      end
-
-      it 'returns true for a reblog containing a muted keyword' do
-        Fabricate('Glitch::KeywordMute', account: alice, keyword: 'take')
-        status = Fabricate(:status, text: 'This is a hot take', account: bob)
-        reblog = Fabricate(:status, reblog: status, account: jeff)
-
-        expect(FeedManager.instance.filter?(:home, reblog, alice.id)).to be true
-      end
-
-      it 'returns true for a reblog whose spoiler text contains a muted keyword' do
-        Fabricate('Glitch::KeywordMute', account: alice, keyword: 'take')
-        status = Fabricate(:status, spoiler_text: 'This is a hot take', account: bob)
-        reblog = Fabricate(:status, reblog: status, account: jeff)
-
-        expect(FeedManager.instance.filter?(:home, reblog, alice.id)).to be true
-      end
-
-      it 'returns true for a status with a tag that matches a muted keyword' do
-        Fabricate('Glitch::KeywordMute', account: alice, keyword: 'jorts')
-        status = Fabricate(:status, account: bob)
-        status.tags << Fabricate(:tag, name: 'jorts')
-
-        expect(FeedManager.instance.filter?(:home, status, alice.id)).to be true
-      end
-
-      it 'returns true for a status with a tag that matches an octothorpe-prefixed muted keyword' do
-        Fabricate('Glitch::KeywordMute', account: alice, keyword: '#jorts')
-        status = Fabricate(:status, account: bob)
-        status.tags << Fabricate(:tag, name: 'jorts')
-
-        expect(FeedManager.instance.filter?(:home, status, alice.id)).to be true
-      end
-
-      it 'returns false if the status is muted by a keyword mute that does not apply to mentions' do
-        Fabricate('Glitch::KeywordMute', account: alice, keyword: 'take', apply_to_mentions: false)
-        status = Fabricate(:status, spoiler_text: 'This is a hot take', account: bob)
-        status.mentions.create!(account_id: alice.id)
-
-        expect(FeedManager.instance.filter?(:home, status, alice.id)).to be false
-      end
-
       context 'for irreversibly muted phrases' do
         it 'considers word boundaries when matching' do
           alice.custom_filters.create!(phrase: 'bob', context: %w(home), irreversible: true)
@@ -247,20 +185,6 @@ RSpec.describe FeedManager do
         bob.follow!(alice)
         expect(FeedManager.instance.filter?(:mentions, status, bob.id)).to be false
       end
-
-      it 'returns true for status that contains a muted keyword' do
-        Fabricate('Glitch::KeywordMute', account: bob, keyword: 'take')
-        status = Fabricate(:status, text: 'This is a hot take', account: alice)
-        bob.follow!(alice)
-        expect(FeedManager.instance.filter?(:mentions, status, bob.id)).to be true
-      end
-
-      it 'returns false for a mention that contains a word muted by a keyword that does not apply to mentions' do
-        Fabricate('Glitch::KeywordMute', account: bob, keyword: 'take', apply_to_mentions: false)
-        status = Fabricate(:status, text: 'This is a hot take', account: alice)
-        bob.follow!(alice)
-        expect(FeedManager.instance.filter?(:mentions, status, bob.id)).to be false
-      end
     end
   end
 

spec/models/glitch/keyword_mute_helper_spec.rb

@@ -1,52 +0,0 @@
-require 'rails_helper'
-
-RSpec.describe Glitch::KeywordMuteHelper do
-  describe '#matches?' do
-    Unscoped = Glitch::KeywordMute::Scopes::Unscoped
-
-    let(:alice) { Fabricate(:account, username: 'alice').tap(&:save!) }
-    let(:helper) { Glitch::KeywordMuteHelper.new(alice) }
-
-    it 'ignores names of HTML tags in status text' do
-      status = Fabricate(:status, text: '<addr>uh example</addr>')
-      Glitch::KeywordMute.create!(account: alice, keyword: 'addr')
-
-      expect(helper.matches?(status, Unscoped)).to be false
-    end
-
-    it 'ignores properties of HTML tags in status text' do
-      status = Fabricate(:status, text: '<a href="https://www.example.org">uh example</a>')
-      Glitch::KeywordMute.create!(account: alice, keyword: 'href')
-
-      expect(helper.matches?(status, Unscoped)).to be false
-    end
-
-    it 'matches text inside HTML tags' do
-      status = Fabricate(:status, text: '<p>HEY THIS IS SOMETHING ANNOYING</p>')
-      Glitch::KeywordMute.create!(account: alice, keyword: 'annoying')
-
-      expect(helper.matches?(status, Unscoped)).to be true
-    end
-
-    it 'matches < in HTML-stripped text' do
-      status = Fabricate(:status, text: '<p>I <3 oats</p>')
-      Glitch::KeywordMute.create!(account: alice, keyword: '<3')
-
-      expect(helper.matches?(status, Unscoped)).to be true
-    end
-
-    it 'matches &lt; in HTML text' do
-      status = Fabricate(:status, text: '<p>I &lt;3 oats</p>')
-      Glitch::KeywordMute.create!(account: alice, keyword: '<3')
-
-      expect(helper.matches?(status, Unscoped)).to be true
-    end
-
-    it 'matches link hrefs in HTML text' do
-      status = Fabricate(:status, text: '<p><a href="https://example.com/it-was-milk">yep</a></p>')
-      Glitch::KeywordMute.create!(account: alice, keyword: 'milk')
-
-      expect(helper.matches?(status, Unscoped)).to be true
-    end
-  end
-end

spec/models/glitch/keyword_mute_spec.rb

@@ -1,171 +0,0 @@
-require 'rails_helper'
-
-RSpec.describe Glitch::KeywordMute, type: :model do
-  let(:alice) { Fabricate(:account, username: 'alice').tap(&:save!) }
-  let(:bob) { Fabricate(:account, username: 'bob').tap(&:save!) }
-
-  Unscoped = Glitch::KeywordMute::Scopes::Unscoped
-
-  describe '.text_matcher_for' do
-    let(:matcher) { Glitch::KeywordMute.text_matcher_for(alice.id) }
-
-    describe 'with no mutes' do
-      before do
-        Glitch::KeywordMute.delete_all
-      end
-
-      it 'does not match' do
-        expect(matcher.matches?('This is a hot take', Unscoped)).to be_falsy
-      end
-    end
-
-    describe 'with mutes' do
-      it 'does not match keywords set by a different account' do
-        Glitch::KeywordMute.create!(account: bob, keyword: 'take')
-
-        expect(matcher.matches?('This is a hot take', Unscoped)).to be_falsy
-      end
-
-      it 'does not match if no keywords match the status text' do
-        Glitch::KeywordMute.create!(account: alice, keyword: 'cold')
-
-        expect(matcher.matches?('This is a hot take', Unscoped)).to be_falsy
-      end
-
-      it 'considers word boundaries when matching' do
-        Glitch::KeywordMute.create!(account: alice, keyword: 'bob', whole_word: true)
-
-        expect(matcher.matches?('bobcats', Unscoped)).to be_falsy
-      end
-
-      it 'matches substrings if whole_word is false' do
-        Glitch::KeywordMute.create!(account: alice, keyword: 'take', whole_word: false)
-
-        expect(matcher.matches?('This is a shiitake mushroom', Unscoped)).to be_truthy
-      end
-
-      it 'matches keywords at the beginning of the text' do
-        Glitch::KeywordMute.create!(account: alice, keyword: 'take')
-
-        expect(matcher.matches?('Take this', Unscoped)).to be_truthy
-      end
-
-      it 'matches keywords at the end of the text' do
-        Glitch::KeywordMute.create!(account: alice, keyword: 'take')
-
-        expect(matcher.matches?('This is a hot take', Unscoped)).to be_truthy
-      end
-
-      it 'matches if at least one keyword case-insensitively matches the text' do
-        Glitch::KeywordMute.create!(account: alice, keyword: 'hot')
-
-        expect(matcher.matches?('This is a HOT take', Unscoped)).to be_truthy
-      end
-
-      it 'matches if at least one non-whole-word keyword case-insensitively matches the text' do
-        Glitch::KeywordMute.create!(account: alice, keyword: 'hot', whole_word: false)
-
-        expect(matcher.matches?('This is a HOTTY take', Unscoped)).to be_truthy
-      end
-
-      it 'maintains case-insensitivity when combining keywords into a single matcher' do
-        Glitch::KeywordMute.create!(account: alice, keyword: 'hot')
-        Glitch::KeywordMute.create!(account: alice, keyword: 'cold')
-
-        expect(matcher.matches?('This is a HOT take', Unscoped)).to be_truthy
-      end
-
-      it 'matches keywords surrounded by non-alphanumeric ornamentation' do
-        Glitch::KeywordMute.create!(account: alice, keyword: 'hot')
-
-        expect(matcher.matches?('(hot take)', Unscoped)).to be_truthy
-      end
-
-      it 'escapes metacharacters in whole-word keywords' do
-        Glitch::KeywordMute.create!(account: alice, keyword: '(hot take)')
-
-        expect(matcher.matches?('(hot take)', Unscoped)).to be_truthy
-      end
-
-      it 'escapes metacharacters in non-whole-word keywords' do
-        Glitch::KeywordMute.create!(account: alice, keyword: '(-', whole_word: false)
-
-        expect(matcher.matches?('bad (-)', Unscoped)).to be_truthy
-      end
-
-      it 'uses case-folding rules appropriate for more than just English' do
-        Glitch::KeywordMute.create!(account: alice, keyword: 'großeltern')
-
-        expect(matcher.matches?('besuch der grosseltern', Unscoped)).to be_truthy
-      end
-
-      it 'matches keywords that are composed of multiple words' do
-        Glitch::KeywordMute.create!(account: alice, keyword: 'a shiitake')
-
-        expect(matcher.matches?('This is a shiitake', Unscoped)).to be_truthy
-        expect(matcher.matches?('This is shiitake', Unscoped)).to_not be_truthy
-      end
-    end
-  end
-
-  describe '.tag_matcher_for' do
-    let(:matcher) { Glitch::KeywordMute.tag_matcher_for(alice.id) }
-    let(:status) { Fabricate(:status) }
-
-    describe 'with no mutes' do
-      before do
-        Glitch::KeywordMute.delete_all
-      end
-
-      it 'does not match' do
-        status.tags << Fabricate(:tag, name: 'xyzzy')
-
-        expect(matcher.matches?(status.tags, Unscoped)).to be false
-      end
-    end
-
-    describe 'with mutes' do
-      it 'does not match keywords set by a different account' do
-        status.tags << Fabricate(:tag, name: 'xyzzy')
-        Glitch::KeywordMute.create!(account: bob, keyword: 'take')
-
-        expect(matcher.matches?(status.tags, Unscoped)).to be false
-      end
-
-      it 'matches #xyzzy when given the mute "#xyzzy"' do
-        status.tags << Fabricate(:tag, name: 'xyzzy')
-        Glitch::KeywordMute.create!(account: alice, keyword: '#xyzzy')
-
-        expect(matcher.matches?(status.tags, Unscoped)).to be true
-      end
-
-      it 'matches #thingiverse when given the non-whole-word mute "#thing"' do
-        status.tags << Fabricate(:tag, name: 'thingiverse')
-        Glitch::KeywordMute.create!(account: alice, keyword: '#thing', whole_word: false)
-
-        expect(matcher.matches?(status.tags, Unscoped)).to be true
-      end
-
-      it 'matches #hashtag when given the mute "##hashtag""' do
-        status.tags << Fabricate(:tag, name: 'hashtag')
-        Glitch::KeywordMute.create!(account: alice, keyword: '##hashtag')
-
-        expect(matcher.matches?(status.tags, Unscoped)).to be true
-      end
-
-      it 'matches #oatmeal when given the non-whole-word mute "oat"' do
-        status.tags << Fabricate(:tag, name: 'oatmeal')
-        Glitch::KeywordMute.create!(account: alice, keyword: 'oat', whole_word: false)
-
-        expect(matcher.matches?(status.tags, Unscoped)).to be true
-      end
-
-      it 'does not match #oatmeal when given the mute "#oat"' do
-        status.tags << Fabricate(:tag, name: 'oatmeal')
-        Glitch::KeywordMute.create!(account: alice, keyword: 'oat')
-
-        expect(matcher.matches?(status.tags, Unscoped)).to be false
-      end
-    end
-  end
-end