Add Version#detected_from_url?

Library/Homebrew/cmd/audit.rb

@@ -217,8 +217,8 @@ class FormulaAuditor
       if s.version.to_s.empty?
         problem "Invalid or missing #{spec} version"
       else
-        version_text = s.version if s.explicit_version?
-        version_url = Pathname.new(s.url).version
+        version_text = s.version unless s.version.detected_from_url?
+        version_url = Version.parse(s.url)
         if version_url == version_text
           problem "#{spec} version #{version_text} is redundant with version scanned from URL"
         end

Library/Homebrew/formula_support.rb

@@ -11,11 +11,6 @@ class SoftwareSpec
     @mirrors = []
   end
 
-  # Was the version defined in the DSL, or detected from the URL?
-  def explicit_version?
-    @explicit_version || false
-  end
-
   def download_strategy
     @download_strategy ||= DownloadStrategyDetector.new(@url, @using).detect
   end
@@ -63,7 +58,6 @@ class SoftwareSpec
       @version ||= Version.parse(@url)
     else
       @version = Version.new(val)
-      @explicit_version = true
     end
   end
 

Library/Homebrew/test/test_formula.rb

@@ -122,9 +122,9 @@ class FormulaTests < Test::Unit::TestCase
     assert_equal 1, f.devel.mirrors.length
     assert f.head.mirrors.empty?
 
-    assert !f.stable.explicit_version?
-    assert !f.bottle.explicit_version?
-    assert !f.devel.explicit_version?
+    assert f.stable.version.detected_from_url?
+    assert f.bottle.version.detected_from_url?
+    assert f.devel.version.detected_from_url?
     assert_version_equal '0.1', f.stable.version
     assert_version_equal '0.1', f.bottle.version
     assert_version_equal '0.2', f.devel.version
@@ -159,8 +159,8 @@ class FormulaTests < Test::Unit::TestCase
     assert_version_equal '0.3', f.version
     assert_version_equal '0.3', f.stable.version
     assert_version_equal '0.4', f.devel.version
-    assert f.stable.explicit_version?
-    assert f.devel.explicit_version?
+    assert !f.stable.version.detected_from_url?
+    assert !f.devel.version.detected_from_url?
   end
 
   def test_old_bottle_specs
@@ -182,7 +182,7 @@ class FormulaTests < Test::Unit::TestCase
       assert_nil f.bottle.md5
       assert_nil f.bottle.sha256
 
-      assert !f.bottle.explicit_version?
+      assert f.bottle.version.detected_from_url?
       assert_equal 0, f.bottle.revision
       assert_version_equal '0.1', f.bottle.version
     else

Library/Homebrew/version.rb

@@ -1,9 +1,14 @@
 class Version
   include Comparable
 
-  def initialize val
+  def initialize val, detected=false
     return val if val.is_a? Version or val.nil?
     @version = val.to_s
+    @detected_from_url = detected
+  end
+
+  def detected_from_url?
+    @detected_from_url
   end
 
   def head?
@@ -39,7 +44,7 @@ class Version
 
   def self.parse spec
     version = _parse(spec)
-    Version.new(version) unless version.nil?
+    Version.new(version, true) unless version.nil?
   end
 
   private