String#encode with undef replace options problem #881
Description
I am now switching my app from old jruby-1.6.8 to new 1.7.4 but I have issue with String#encode method.
1.9.3p385 :003 > "Pojemność".encode(Encoding::US_ASCII, { :undef => :replace, :replace => ""})
=> "Pojemno"
2.0.0p247 :002 > "Pojemność".encode(Encoding::US_ASCII, { :undef => :replace, :replace => ""})
=> "Pojemno"
jruby-1.6.8 :001 >
jruby-1.6.8 :001 > "Pojemność".encode(Encoding::US_ASCII, { :undef => :replace, :replace => ""})
=> "Pojemno"
jruby-1.7.0 :001 > "Pojemność".encode(Encoding::US_ASCII, { :undef => :replace, :replace => ""})
=> "Pojemno??"
jruby-1.7.4 :001 > "Pojemność".encode(Encoding::US_ASCII, { :undef => :replace, :replace => ""})
=> "Pojemno??"It looks like :replace option is totally not used in this method. Is it not supported in Jruby 1.7 branch or I just doing something wrong?