in regexps, the dot in a character class is not a metacharacter

actionpack/test/activerecord/controller_runtime_test.rb

@@ -37,6 +37,6 @@ class ControllerRuntimeLogSubscriberTest < ActionController::TestCase
     wait
 
     assert_equal 2, @logger.logged(:info).size
-    assert_match(/\(Views: [\d\.]+ms | ActiveRecord: [\d\.]+ms\)/, @logger.logged(:info)[1])
+    assert_match(/\(Views: [\d.]+ms | ActiveRecord: [\d.]+ms\)/, @logger.logged(:info)[1])
   end
 end

actionpack/test/controller/log_subscriber_test.rb

@@ -93,7 +93,7 @@ class ACLogSubscriberTest < ActionController::TestCase
   def test_process_action_with_view_runtime
     get :show
     wait
-    assert_match(/\(Views: [\d\.]+ms\)/, logs[1])
+    assert_match(/\(Views: [\d.]+ms\)/, logs[1])
   end
 
   def test_process_action_with_filter_parameters

activerecord/lib/active_record/connection_adapters/postgresql_adapter.rb

@@ -465,8 +465,8 @@ module ActiveRecord
               #  (2) $12.345.678,12
               case data
               when /^-?\D+[\d,]+\.\d{2}$/  # (1)
-                data.gsub!(/[^-\d\.]/, '')
-              when /^-?\D+[\d\.]+,\d{2}$/  # (2)
+                data.gsub!(/[^-\d.]/, '')
+              when /^-?\D+[\d.]+,\d{2}$/  # (2)
                 data.gsub!(/[^-\d,]/, '').sub!(/,/, '.')
               end
             end

activerecord/lib/active_record/relation.rb

@@ -379,7 +379,7 @@ module ActiveRecord
       return [] if string.blank?
       # always convert table names to downcase as in Oracle quoted table names are in uppercase
       # ignore raw_sql_ that is used by Oracle adapter as alias for limit/offset subqueries
-      string.scan(/([a-zA-Z_][\.\w]+).?\./).flatten.map{ |s| s.downcase }.uniq - ['raw_sql_']
+      string.scan(/([a-zA-Z_][.\w]+).?\./).flatten.map{ |s| s.downcase }.uniq - ['raw_sql_']
     end
 
   end

activesupport/bin/generate_tables

@@ -70,7 +70,7 @@ module ActiveSupport
         end
 
         def parse_grapheme_break_property(line)
-          if line =~ /^([0-9A-F\.]+)\s*;\s*([\w]+)\s*#/
+          if line =~ /^([0-9A-F.]+)\s*;\s*([\w]+)\s*#/
             type = $2.downcase.intern
             @ucd.boundary[type] ||= []
             if $1.include? '..'

railties/lib/rails/backtrace_cleaner.rb

@@ -22,7 +22,7 @@ module Rails
         gems_paths = (Gem.path + [Gem.default_dir]).uniq.map!{ |p| Regexp.escape(p) }
         return if gems_paths.empty?
 
-        gems_regexp = %r{(#{gems_paths.join('|')})/gems/([^/]+)-([\w\.]+)/(.*)}
+        gems_regexp = %r{(#{gems_paths.join('|')})/gems/([^/]+)-([\w.]+)/(.*)}
         add_filter { |line| line.sub(gems_regexp, '\2 (\3) \4') }
       end
   end

railties/lib/rails/engine.rb

@@ -336,7 +336,7 @@ module Rails
           base.called_from = begin
             # Remove the line number from backtraces making sure we don't leave anything behind
             call_stack = caller.map { |p| p.split(':')[0..-2].join(':') }
-            File.dirname(call_stack.detect { |p| p !~ %r[railties[\w\-\.]*/lib/rails|rack[\w\-\.]*/lib/rack] })
+            File.dirname(call_stack.detect { |p| p !~ %r[railties[\w.-]*/lib/rails|rack[\w.-]*/lib/rack] })
           end
         end