2 files changed, 9 insertions, 9 deletions
diff --git a/Library/Homebrew/cmd/tap.rb b/Library/Homebrew/cmd/tap.rb
index b24c70e87..80ebcd81e 100644
--- a/Library/Homebrew/cmd/tap.rb
+++ b/Library/Homebrew/cmd/tap.rb
@@ -107,7 +107,7 @@ module Homebrew extend self
   end
 
   def tap_args
-    ARGV.first =~ %r{^([\w-]+)/(homebrew-)?([\w-]+)$}
+    ARGV.first =~ HOMEBREW_TAP_ARGS_REGEX
     raise "Invalid tap name" unless $1 && $3
     [$1, $3]
   end
@@ -122,7 +122,7 @@ module Homebrew extend self
 
   def tap_ref(path)
     case path.to_s
-    when %r{^#{HOMEBREW_LIBRARY}/Taps/([\w-]+)/([\w-]+)/(.+)}
+    when HOMEBREW_TAP_PATH_REGEX
       "#$1/#$2/#{File.basename($3, '.rb')}"
     when %r{^#{HOMEBREW_LIBRARY}/Formula/(.+)}
       "Homebrew/homebrew/#{File.basename($1, '.rb')}"
diff --git a/Library/Homebrew/cmd/update.rb b/Library/Homebrew/cmd/update.rb
index 45f8251ba..88804c6cf 100644
--- a/Library/Homebrew/cmd/update.rb
+++ b/Library/Homebrew/cmd/update.rb
@@ -218,9 +218,9 @@ class Report < Hash
 
   def tapped_formula_for key
     fetch(key, []).select do |path|
-      case path.relative_path_from(HOMEBREW_REPOSITORY).to_s
-      when %r{^Library/Taps/([\w-]+/[\w-]+/.*)}
-        valid_formula_location?($1)
+      case path.to_s
+      when HOMEBREW_TAP_PATH_REGEX
+        valid_formula_location?("#{$1}/#{$2}/#{$3}")
       else
         false
       end
@@ -247,11 +247,11 @@ class Report < Hash
 
   def select_formula key
     fetch(key, []).map do |path|
-      case path.relative_path_from(HOMEBREW_REPOSITORY).to_s
-      when %r{^Library/Formula}
+      case path.to_s
+      when Regexp.new(HOMEBREW_LIBRARY + "/Formula")
         path.basename(".rb").to_s
-      when %r{^Library/Taps/([\w-]+)/(homebrew-)?([\w-]+)/(.*)\.rb}
-        "#$1/#$3/#{path.basename(".rb")}"
+      when HOMEBREW_TAP_PATH_REGEX
+        "#$1/#{$2.sub("homebrew-", "")}/#{path.basename(".rb")}"
       end
     end.compact.sort
   end