Rename attachment option to return_attachment

Signed-off-by: Valentin Kiselev <mrexox@evilmartians.com>

Author: mrexox

README.md

@@ -235,7 +235,7 @@ builder.url_for("http://images.example.com/images/image2.jpg")
 - [auto_rotate](https://docs.imgproxy.net/#/generating_the_url_advanced?id=auto-rotate)
 - [filename](https://docs.imgproxy.net/#/generating_the_url_advanced?id=filename)
 - [format](https://docs.imgproxy.net/#/generating_the_url_advanced?id=format)
-- [attachment](https://docs.imgproxy.net/#/generating_the_url_advanced?id=attachment)
+- [return_attachment](https://docs.imgproxy.net/#/generating_the_url_advanced?id=return-attachment)
 
 _See [imgproxy URL format guide](https://docs.imgproxy.net/#/generating_the_url_advanced?id=processing-options) for more info._
 

lib/imgproxy/options.rb

@@ -64,7 +64,7 @@ class Options < Hash
       auto_rotate:            Imgproxy::OptionsCasters::Bool,
       filename:               Imgproxy::OptionsCasters::String,
       format:                 Imgproxy::OptionsCasters::String,
-      attachment:             Imgproxy::OptionsCasters::Bool,
+      return_attachment:      Imgproxy::OptionsCasters::Bool,
     }.freeze
 
     META = %i[size resize adjust].freeze

lib/imgproxy/options_aliases.rb

@@ -39,6 +39,6 @@ module Imgproxy
     strip_color_profile: :scp,
     auto_rotate: :ar,
     filename: :fn,
-    attachment: :att,
+    return_attachment: :att,
   }.freeze
 end

spec/imgproxy_spec.rb

@@ -120,7 +120,7 @@
         auto_rotate: true,
         filename: "the_image.jpg",
         format: :webp,
-        attachment: true,
+        return_attachment: true,
       }
     end
 
@@ -209,7 +209,7 @@
       "strip_color_profile:0/"\
       "auto_rotate:1/"\
       "filename:the_image.jpg/"\
-      "attachment:1"
+      "return_attachment:1"
     end
 
     subject(:url) { described_class.url_for(src_url, options) }