warning: could not load encoding for file.encoding of MS932 in jruby

[yamam]

In Windows 7 , jruby 9.1.2.0, following warning occours.

jruby -we ''
C:/jruby-9.1.2.0/lib/ruby/stdlib/rubygems.rb:117: warning: could not load encoding for file.encoding of MS932, using default external

In my environment, file.encoding is MS932. But in EncodingList.java there isn't MS932. So, please add the follwing entry.

EncodingDB.alias("MS932", "Windows-31J");

[lopex]

MS932 seems to only appear in nkf ext in mri.

[yamam]

MS932 is equivalent to Windows-31J in java. Please refer to the following site. https://docs.oracle.com/javase/7/docs/technotes/guides/intl/encoding.doc.html

windows-31j MS932 Windows Japanese

[lopex]

Fixed in https://github.com/jruby/jcodings/commit/d70bea3b9551283a66019035f4abd6a482de01fe