1 files changed, 11 insertions, 9 deletions
diff --git a/activestorage/app/models/active_storage/filename.rb b/activestorage/app/models/active_storage/filename.rb
index 6a9889addf..df21078718 100644
--- a/activestorage/app/models/active_storage/filename.rb
+++ b/activestorage/app/models/active_storage/filename.rb
@@ -9,21 +9,23 @@ class ActiveStorage::Filename
     @filename = filename
   end
 
-  # Filename.new("racecar.jpg").extname # => ".jpg"
-  def extname
-    File.extname(@filename)
+  # Filename.new("racecar.jpg").base # => "racecar"
+  def base
+    File.basename @filename, extension_with_delimiter
   end
 
-  # Filename.new("racecar.jpg").extension # => "jpg"
-  def extension
-    extname.from(1)
+  # Filename.new("racecar.jpg").extension_with_delimiter # => ".jpg"
+  def extension_with_delimiter
+    File.extname @filename
   end
 
-  # Filename.new("racecar.jpg").base # => "racecar"
-  def base
-    File.basename(@filename, extname)
+  # Filename.new("racecar.jpg").extension_without_delimiter # => "jpg"
+  def extension_without_delimiter
+    extension_with_delimiter.from(1).to_s
   end
 
+  alias_method :extension, :extension_without_delimiter
+
   # Filename.new("foo:bar.jpg").sanitized # => "foo-bar.jpg"
   # Filename.new("foo/bar.jpg").sanitized # => "foo-bar.jpg"
   #