Enable Rubocop Style/StringConcatenation defaults (#23792)

5 files changed, 12 insertions, 12 deletions

diff --git a/lib/mastodon/emoji_cli.rb b/lib/mastodon/emoji_cli.rb
index feb77107f..88065c2a3 100644
--- a/lib/mastodon/emoji_cli.rb
+++ b/lib/mastodon/emoji_cli.rb
@@ -68,7 +68,7 @@ module Mastodon
             failed += 1
             say('Failure/Error: ', :red)
             say(entry.full_name)
-            say('    ' + custom_emoji.errors[:image].join(', '), :red)
+            say("    #{custom_emoji.errors[:image].join(', ')}", :red)
           end
         end
       end
diff --git a/lib/mastodon/redis_config.rb b/lib/mastodon/redis_config.rb
index 037ca5edc..3e97da873 100644
--- a/lib/mastodon/redis_config.rb
+++ b/lib/mastodon/redis_config.rb
@@ -1,17 +1,17 @@
 # frozen_string_literal: true
 
 def setup_redis_env_url(prefix = nil, defaults = true)
-  prefix = prefix.to_s.upcase + '_' unless prefix.nil?
+  prefix = "#{prefix.to_s.upcase}_" unless prefix.nil?
   prefix = '' if prefix.nil?
 
-  return if ENV[prefix + 'REDIS_URL'].present?
+  return if ENV["#{prefix}REDIS_URL"].present?
 
-  password = ENV.fetch(prefix + 'REDIS_PASSWORD') { '' if defaults }
-  host     = ENV.fetch(prefix + 'REDIS_HOST') { 'localhost' if defaults }
-  port     = ENV.fetch(prefix + 'REDIS_PORT') { 6379 if defaults }
-  db       = ENV.fetch(prefix + 'REDIS_DB') { 0 if defaults }
+  password = ENV.fetch("#{prefix}REDIS_PASSWORD") { '' if defaults }
+  host     = ENV.fetch("#{prefix}REDIS_HOST") { 'localhost' if defaults }
+  port     = ENV.fetch("#{prefix}REDIS_PORT") { 6379 if defaults }
+  db       = ENV.fetch("#{prefix}REDIS_DB") { 0 if defaults }
 
-  ENV[prefix + 'REDIS_URL'] = begin
+  ENV["#{prefix}REDIS_URL"] = begin
     if [password, host, port, db].all?(&:nil?)
       ENV['REDIS_URL']
     else
@@ -27,7 +27,7 @@ setup_redis_env_url(:cache, false)
 setup_redis_env_url(:sidekiq, false)
 
 namespace         = ENV.fetch('REDIS_NAMESPACE', nil)
-cache_namespace   = namespace ? namespace + '_cache' : 'cache'
+cache_namespace   = namespace ? "#{namespace}_cache" : 'cache'
 sidekiq_namespace = namespace
 
 REDIS_CACHE_PARAMS = {
diff --git a/lib/mastodon/snowflake.rb b/lib/mastodon/snowflake.rb
index fe0dc1722..8030288af 100644
--- a/lib/mastodon/snowflake.rb
+++ b/lib/mastodon/snowflake.rb
@@ -115,7 +115,7 @@ module Mastodon::Snowflake
         # And only those that are using timestamp_id.
         next unless (data = DEFAULT_REGEX.match(id_col.default_function))
 
-        seq_name = data[:seq_prefix] + '_id_seq'
+        seq_name = "#{data[:seq_prefix]}_id_seq"
 
         # If we were on Postgres 9.5+, we could do CREATE SEQUENCE IF
         # NOT EXISTS, but we can't depend on that. Instead, catch the
diff --git a/lib/paperclip/gif_transcoder.rb b/lib/paperclip/gif_transcoder.rb
index f385b00a3..32bdb8a86 100644
--- a/lib/paperclip/gif_transcoder.rb
+++ b/lib/paperclip/gif_transcoder.rb
@@ -109,7 +109,7 @@ module Paperclip
       final_file = Paperclip::Transcoder.make(file, options, attachment)
 
       if options[:style] == :original
-        attachment.instance.file_file_name    = File.basename(attachment.instance.file_file_name, '.*') + '.mp4'
+        attachment.instance.file_file_name    = "#{File.basename(attachment.instance.file_file_name, '.*')}.mp4"
         attachment.instance.file_content_type = 'video/mp4'
         attachment.instance.type              = MediaAttachment.types[:gifv]
       end
diff --git a/lib/paperclip/type_corrector.rb b/lib/paperclip/type_corrector.rb
index 17e2fc5da..030b98b12 100644
--- a/lib/paperclip/type_corrector.rb
+++ b/lib/paperclip/type_corrector.rb
@@ -7,7 +7,7 @@ module Paperclip
     def make
       return @file unless options[:format]
 
-      target_extension = '.' + options[:format]
+      target_extension = ".#{options[:format]}"
       extension        = File.extname(attachment.instance_read(:file_name))
 
       return @file unless options[:style] == :original && target_extension && extension != target_extension