[mew-int 01594] Re: windows 1252

["Kazu Yamamoto" <kazu@iijlab.net>]

Hello Stephen,

# ordering was changed.

> ctext can, because in the extended segment the characters will be
> represented as themselves.  Whether Mule can or not is a different
> story.  However, I'm fairly sure that all of the characters that
> Windows 125x put into the C1 space are encodable by Mule.  See
> 
> http://www.microsoft.com/globaldev/reference/sbcs/1252.htm
> 
> for example.

Thank you for this information.

I produced 0x80-0xff into a file and let Emacs read it as Windows
1252.

Q1) According to the page above, 0x8f is undefined, and 0x9e is
    defined as LATIN SMALL LETTER Z WITH CARON.

    But Emacs 21.3.50 treated 0x8f as LATIN SMALL LETTER Z WITH CARON
    and 0x9e as undefined.

    Is this a bug?

> You don't even need to do that with an extended segment.  The
> Windows-125x sets are all IANA-registered, which should be enough for
> global uniqueness.  To represent the text, you just use the name of
> the character set: ESC % / 1 <M> <L> Windows-1252 STX ... where <M>
> and <L> encode the length of the segment and ESC and STX are the ASCII
> control characters 0x1B and 0x02.

I save the buffer as ctext. The result file is attached below. All
characters in Windows 1252 can be encoded with ctext. :-)

Q2) However the encoding is different from the one above. Is this
    encoding correct?

Note that I verified that Emacs can read the ctext file correctly.

--Kazu

ESC $ - 1 0xf4 0xcc ESC - A 
ESC $ - 1 0xf2 0xfa ESC - A 
ESC $ - 1 0xa1 0xd2 ESC - A 
ESC $ - 1 0xf2 0xfe ESC - A 
ESC $ - 1 0xf3 0xa6 ESC - A 
ESC $ - 1 0xf3 0xa0 ESC - A 
ESC $ - 1 0xf3 0xa1 ESC - A 
ESC $ - 1 0xa4 0xe6 ESC - A 
ESC $ - 1 0xf3 0xb0 ESC - A 
ESC $ - 1 0xa1 0xa0 ESC - A 
ESC $ - 1 0xf3 0xb9 ESC - A 
ESC $ - 1 0xa0 0xf2 ESC - A 
ESC $ - 1 0xa1 0xbd ESC - A 
ESC $ - 1 0xa1 0xbe ESC - A 
ESC $ - 1 0xf2 0xf8 ESC - A 
ESC $ - 1 0xf2 0xf9 ESC - A 
ESC $ - 1 0xf2 0xfc ESC - A 
ESC $ - 1 0xf2 0xfd ESC - A 
ESC $ - 1 0xf3 0xa2 ESC - A 
ESC $ - 1 0xf2 0xf3 ESC - A 
ESC $ - 1 0xf2 0xf4 ESC - A 
ESC $ - 1 0xa4 0xfc ESC - A 
ESC $ - 1 0xf5 0xe2 ESC - A 
ESC $ - 1 0xa1 0xa1 ESC - A 
ESC $ - 1 0xf3 0xba ESC - A 
ESC $ - 1 0xa0 0xf3 ESC - A 
ESC $ - 1 0xa1 0xb8 ESC - A 
0xa0 
0xa1 
...