1 files changed, 7 insertions, 0 deletions
diff --git a/lib/open-uri.rb b/lib/open-uri.rb
index c68aee6e97..03f5e6de4e 100644
--- a/lib/open-uri.rb
+++ b/lib/open-uri.rb
@@ -132,6 +132,11 @@ module OpenURI
     options ||= {}
     OpenURI.check_options(options)
 
+    if /\Arb?(?:\Z|:([^:]+))/ =~ mode
+      encoding, = $1,Encoding.find($1) if $1
+      mode = nil
+    end
+
     unless mode == nil ||
            mode == 'r' || mode == 'rb' ||
            mode == File::RDONLY
@@ -139,6 +144,8 @@ module OpenURI
     end
 
     io = open_loop(uri, options)
+    io.set_encoding(encoding) if encoding
+    p [encoding, io.external_encoding]
     if block_given?
       begin
         yield io