Optimize some regex matching (#15528)

* Use Regex#match?

* Replace =~ too

* Avoid to call match? from Nil

* Keep value of Regexp.last_match

app/lib/extractor.rb

@@ -7,14 +7,14 @@ module Extractor
 
   # :yields: username, list_slug, start, end
   def extract_mentions_or_lists_with_indices(text)
-    return [] unless text =~ Twitter::Regex[:at_signs]
+    return [] unless Twitter::Regex[:at_signs].match?(text)
 
     possible_entries = []
 
     text.to_s.scan(Account::MENTION_RE) do |screen_name, _|
       match_data = $LAST_MATCH_INFO
       after = $'
-      unless after =~ Twitter::Regex[:end_mention_match]
+      unless Twitter::Regex[:end_mention_match].match?(after)
         start_position = match_data.char_begin(1) - 1
         end_position = match_data.char_end(1)
         possible_entries << {
@@ -33,7 +33,7 @@ module Extractor
   end
 
   def extract_hashtags_with_indices(text, **)
-    return [] unless text =~ /#/
+    return [] unless /#/.match?(text)
 
     tags = []
     text.scan(Tag::HASHTAG_RE) do |hash_text, _|
@@ -41,7 +41,7 @@ module Extractor
       start_position = match_data.char_begin(1) - 1
       end_position = match_data.char_end(1)
       after = $'
-      if after =~ %r{\A://}
+      if %r{\A://}.match?(after)
         hash_text.match(/(.+)(https?\Z)/) do |matched|
           hash_text = matched[1]
           end_position -= matched[2].char_length

app/lib/feed_manager.rb

@@ -396,8 +396,8 @@ class FeedManager
 
     active_filters.map! do |filter|
       if filter.whole_word
-        sb = filter.phrase =~ /\A[[:word:]]/ ? '\b' : ''
-        eb = filter.phrase =~ /[[:word:]]\z/ ? '\b' : ''
+        sb = /\A[[:word:]]/.match?(filter.phrase) ? '\b' : ''
+        eb = /[[:word:]]\z/.match?(filter.phrase) ? '\b' : ''
 
         /(?mix:#{sb}#{Regexp.escape(filter.phrase)}#{eb})/
       else
@@ -417,7 +417,7 @@ class FeedManager
       status.media_attachments.map(&:description).join("\n\n"),
     ].compact.join("\n\n")
 
-    !combined_regex.match(combined_text).nil?
+    combined_regex.match?(combined_text)
   end
 
   # Adds a status to an account's feed, returning true if a status was

app/lib/formatter.rb

@@ -222,7 +222,7 @@ class Formatter
 
     escaped = text.chars.map do |c|
       output = begin
-        if c.ord.to_s(16).length > 2 && UNICODE_ESCAPE_BLACKLIST_RE.match(c).nil?
+        if c.ord.to_s(16).length > 2 && !UNICODE_ESCAPE_BLACKLIST_RE.match?(c)
           CGI.escape(c)
         else
           c

app/lib/request.rb

@@ -145,7 +145,7 @@ class Request
   end
 
   def block_hidden_service?
-    !Rails.configuration.x.access_to_hidden_service && /\.(onion|i2p)$/.match(@url.host)
+    !Rails.configuration.x.access_to_hidden_service && /\.(onion|i2p)$/.match?(@url.host)
   end
 
   module ClientLimit

app/lib/sanitize_config.rb

@@ -28,9 +28,9 @@ class Sanitize
       return unless class_list
 
       class_list.keep_if do |e|
-        next true if e =~ /^(h|p|u|dt|e)-/ # microformats classes
-        next true if e =~ /^(mention|hashtag)$/ # semantic classes
-        next true if e =~ /^(ellipsis|invisible)$/ # link formatting classes
+        next true if /^(h|p|u|dt|e)-/.match?(e) # microformats classes
+        next true if /^(mention|hashtag)$/.match?(e) # semantic classes
+        next true if /^(ellipsis|invisible)$/.match?(e) # link formatting classes
       end
 
       node['class'] = class_list.join(' ')