Re: Fonts and fontsets on X

[Kenichi Handa <handa@gnu.org>]

In article <k59h1n$23t$1@ger.gmane.org>, Yuri D'Elia <wavexx@users.sourceforge.net> writes:

> Hi everyone. I would like to have some insider's comments about 
> fontsets. I'm trying both emacs 23/24 from debian.

> Can fontsets be used as a decent "fallback" mechanism whenever the 
> requested glyph of a font is missing?

> The typical case scenario is a monospaced font that comes in both 
> normal/bold variants, but the bold face does not contain all glyphs. 
> Showing the glyph from the normal face would be better than using 
> another face.

> My initial approach to this was:

> (create-fontset-from-fontset-spec "-unknown-Droid Sans 
> Mono-normal-normal-normal-*-18-*-*-*-*-*-fontset-normal,-unknown-DejaVu 
> Sans Mono-normal-normal-normal-*-18-*-*-*-*-*-*")
> (create-fontset-from-fontset-spec "-unknown-Droid Sans 
> Mono-bold-normal-normal-*-18-*-*-*-*-*-fontset-bold,-unknown-Droid Sans 
> Mono-normal-normal-normal-*-18-*-*-*-*-*-*,-unknown-DejaVu Sans 
> Mono-normal-normal-normal-*-18-*-*-*-*-*-*")

If you want to specify the default font exactly by name,
please use "ascii" for SCRIPT-NAME as below (see the docstring of
create-fontset-from-fontset-spec):

(create-fontset-from-fontset-spec
 "-unknown-Droid Sans Mono-normal-normal-normal-*-18-*-*-*-*-*-fontset-normal,\
  ascii:-unknown-DejaVu Sans Mono-normal-normal-normal-*-18-*-*-*-*-*-*")
(create-fontset-from-fontset-spec
 "-unknown-Droid Sans Mono-bold-normal-normal-*-18-*-*-*-*-*-fontset-bold,\
  ascii:-unknown-Droid Sans Mono-normal-normal-normal-*-18-*-*-*-*-*-*")

> (set-face-attribute 'default :font "fontset-normal")
> (set-face-attribute 'bold :font "fontset-bold")

The aboves are syntax error.  Do this:

(set-face-attribute 'default nil :font "fontset-normal")
(set-face-attribute 'bold nil :font "fontset-bold")

With them, my bold face uses "Droid Sans Mono" font.

---
Kenichi Handa
handa@gnu.org