From: Clifford Heath <no@...>
Date: 2010-11-17T21:10:17+09:00
Subject: Re: Ruby 1.9.2 commandline options

Ammar Ali wrote:
> On Wed, Nov 17, 2010 at 12:20 AM, Clifford Heath <no@spam.please.net> wrote:
>> ruby --help lists -E, which doesn't seem to work as advertised,
>> but not -K, which does what I wanted. Can someone please check
>> that the source code and the help message coincide?
> 
> I'm not sure what you mean by work as advertised, but I would like to
> note that the syntax for -E is different that of -K; it takes the full
> encoding name, case-insensitive:
> 
>   ruby -Eutf-8:utf-8
>   ruby -Eascii:utf-8
> 
> Does that do what you except?

No, it still complains "invalid multibyte char (US-ASCII)" on
a valid UTF-8 character, in a UTF-8 file having no Unicode BOM.

Also, the help implies that you can set just the external encoding
without the internal encoding, which I did, since I could care less
which internal encoding Ruby uses. ruby --help says:
  ...
  -Eex[:in]       specify the default external and internal character encodings

The square brackets imply that the internal encoding is optional.

Why is -K not listed in --help? Especially since it's the option
that seems to actually work...

Clifford Heath.