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Date: Sat, 22 May 2010 22:27:43 +0900
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Subject: Re: LANG=ja_JP.Shift_JIS
From: rushojp <rushojp AT gmail DOT com>
To: cygwin AT cygwin DOT com
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2010/5/21 Andy Koppe <andy DOT koppe AT gmail DOT com>:
>
> So why do you need to set it to ja_JP.Shift_JIS if ja_JP.CP932 and
> ja_JP.SJIS do the same thing?

There is no serious reason.
I think IANA name is more famous.

> I'm not convinced that adding Shift_JIS to Cygwin as another alias for
> CP932 is a good idea, because they aren't actually the same, e.g.
> iconv treats them as different charsets. The SJIS alias is dodgy
> enough already.

Yes, I know it is difficult problem.

@centos5.5
$ echo -ne '\x5c ~ \x81\x60'|iconv -f Shift_JIS -t UTF-16LE|hexdump
0000000 00a5 0020 203e 0020 301c
000000a
$ echo -ne '\x5c ~ \x81\x60'|iconv -f SJIS -t UTF-16LE|hexdump
0000000 00a5 0020 203e 0020 301c
000000a
$ echo -ne '\x5c ~ \x81\x60'|iconv -f CP932 -t UTF-16LE|hexdump
0000000 005c 0020 007e 0020 ff5e
000000a
$ echo -ne '\x5c ~ \x81\x60'|iconv -f Windows-31J -t UTF-16LE|hexdump
0000000 005c 0020 007e 0020 ff5e
000000a

@cygwin-1.7
$ echo -ne '\x5c ~ \x81\x60'|iconv -f Shift_JIS -t UTF-16LE|hexdump
0000000 00a5 0020 203e 0020 301c
000000a
$ echo -ne '\x5c ~ \x81\x60'|iconv -f SJIS -t UTF-16LE|hexdump
0000000 00a5 0020 203e 0020 301c
000000a
$ echo -ne '\x5c ~ \x81\x60'|iconv -f CP932 -t UTF-16LE|hexdump
0000000 005c 0020 007e 0020 301c
000000a
$ echo -ne '\x5c ~ \x81\x60'|iconv -f Windows-31J -t UTF-16LE|hexdump
iconv: conversion from Windows-31J unsupported
iconv: try 'iconv -l' to get the list of supported encodings

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