empty charset registry?
Tue Nov 7 14:10:07 EST 2006
Ar an seacht? l? de m? na Samhain, scr?obh Ilya N. Golubev:
> Your 2006-11-05 change of how font is searched for given mule charset
> when instancing font specifiers is clearly user visible. Still there
> is no documentation changes reflecting that, let alone addition to
> `NEWS'. One of incompatibilities is that currently the call:
> (set-charset-registry 'ascii "")
> signals error:
> (invalid-argument "Not an X11 REGISTRY-ENCODING combination" "")
> Before the change doing this particular elisp call had an obvious and
> a very useful effect. That is, user could easily view raw text
> without explicit mule decoding.
Of course there is Mule decoding, otherwise the characters would be
displayed as numbers.
> This is extremely valueable when viewing data items consisting of
> snippets of text in different 8-bit encodings. Those easily result from
> erroneous process output, or simply are some legacy text files. This was
> possible because could obviously specify xemacs to display raw text
> charsets in the very first font retrieved from font specifier for
> particular locale, like this.
> (let ((l '(ascii latin-iso8859-1)))
> (while l
> (set-charset-registry (car l) "")
> (setq l (cdr l))))
> Then would just set font specifications in default (or even perhaps
> other) face font specifiers for frame (or window), and could rely
> xemacs to display raw text in exactly the font as specified.
That?s a horrible, evil hack.
> Another incompatibility is that `control-1' characters are always
> displayed as `\OCTAL', not as code points of some 8-bit font. The
> latter may be disired for the same reasons.
> How do we view raw text in user specified font after the change?
(set-charset-registry 'ascii "charset-registry-of-desired-font")
(set-charset-registry 'latin-iso8859-1 "charset-registry-of-desired-font")
(set-face-font 'default "full-xlfd-of-desired-font")
That is to say, work out which font you want, and choose it.
> How do we check whether `set-charset-registry' in given version and build
> implements old or new data format? Please document.
You shouldn?t need to, if you use the above two lines.
Santa Maradona, priez pour moi!
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