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Re: adding a new encoding
From: |
Baurjan Ismagulov |
Subject: |
Re: adding a new encoding |
Date: |
Sun, 20 Jun 2004 18:35:14 +0200 |
User-agent: |
Mutt/1.5.6i |
Hello,
On Sat, Jun 19, 2004 at 05:03:01PM +0200, Baurjan Ismagulov wrote:
> I want to use Emacs to edit text in PT154 encoding.
Here's what I've understood (please correct me if anything is wrong):
* Emacs uses ISO 2022 internally.
* Supported Cyrillic encodings map to ISO 8859-5.
* PT154 (http://www.iana.org/assignments/charset-reg/PTCP154) cannot be
mapped to ISO 8859-5 due to at least 2x18 characters not present in
the latter.
* One possible solution would be to define-charset cyrillic-asian.
However, the number of characters in a new charset is limited to 94 or
96, and there are 108 non-us-ascii letters in PT154.
So, the questions:
* Can I define cyrillic-asian with 36 characters and use it together
with us-ascii and cyrillic-iso8859-5, or should I define
cyrillic-asian-1 and cyrillic-asian-2, duplicating 2x(33+3) chars
already present in cyrillic-iso8859-5?
* What to do with the final char? These charsets are not registered in
ECMA.
Thanks in advance,
Baurjan.