[Top][All Lists]
[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
Subsets of Unicode and coding systems
From: |
Ulrich Mueller |
Subject: |
Subsets of Unicode and coding systems |
Date: |
Tue, 6 Dec 2011 12:38:57 +0100 |
Hi,
Sometimes I want to check if a file saved in UTF-8 encoding contains
only characters from a certain subset of the Unicode character
repertoire, like the MES-* [1] or WGL4 [2] subsets. (For example, for
things published on the WWW one might rather avoid exotic characters
for better compatibility.)
My idea was now to define a coding system e.g. for MES-2 and set the
buffer-file-coding-system accordingly, so that Emacs would check it
upon saving the file.
Now I have the following questions:
1. Is using coding systems for this purpose a reasonable approach
at all, or is there a better way to achieve this?
2. Where can I find documentation how to define a coding system?
The Elisp Reference Manual isn't really helpful, it only says:
"How to define a coding system is an arcane matter, and is not
documented here."
Ulrich
[1] <http://www.evertype.com/standards/iso10646/pdf/cwa13873.pdf>
[2] <http://en.wikipedia.org/wiki/Windows_Glyph_List_4>
- Subsets of Unicode and coding systems,
Ulrich Mueller <=