diff --git a/Library/Homebrew/bundle/mac_app_store_dumper.rb b/Library/Homebrew/bundle/mac_app_store_dumper.rb
index 1c2d228e65..baf2606007 100644
--- a/Library/Homebrew/bundle/mac_app_store_dumper.rb
+++ b/Library/Homebrew/bundle/mac_app_store_dumper.rb
@@ -22,7 +22,7 @@ module Homebrew
             # Strip unprintable characters
             if app_details
               name = T.must(app_details[:name])
-              [T.must(app_details[:id]), name.gsub(/[[:cntrl:]]|[\p{C}]/, "")]
+              [T.must(app_details[:id]), name.gsub(/[[:cntrl:]]|\p{C}/, "")]
             end
           end
         else
diff --git a/Library/Homebrew/dev-cmd/bump-formula-pr.rb b/Library/Homebrew/dev-cmd/bump-formula-pr.rb
index 98af7df840..d08fedd671 100644
--- a/Library/Homebrew/dev-cmd/bump-formula-pr.rb
+++ b/Library/Homebrew/dev-cmd/bump-formula-pr.rb
@@ -599,7 +599,7 @@ module Homebrew
             end\s
           /x
 
-          leading_spaces = T.must(formula.path.read.match(/^([ ]+)resource "#{resource.name}"/)).captures.first
+          leading_spaces = T.must(formula.path.read.match(/^( +)resource "#{resource.name}"/)).captures.first
           new_resource_block = <<~EOS
             #{leading_spaces}resource "#{resource.name}" do
             #{leading_spaces}  url "#{new_url}"#{new_mirrors.map { |m| "\n#{leading_spaces}  mirror \"#{m}\"" }.join}
diff --git a/Library/Homebrew/manpages/parser/ronn.rb b/Library/Homebrew/manpages/parser/ronn.rb
index 36cddd6111..e05db13797 100644
--- a/Library/Homebrew/manpages/parser/ronn.rb
+++ b/Library/Homebrew/manpages/parser/ronn.rb
@@ -22,7 +22,7 @@ module Homebrew
         end
 
         # HTML-like tags denote variables instead, except <br>.
-        VARIABLE_REGEX = /<([\w\-\|]+)>/
+        VARIABLE_REGEX = /<([\w\-|]+)>/
         def parse_variable
           start_line_number = @src.current_line_number
           @src.scan(VARIABLE_REGEX)