Re: font problem from emacs 23.3 to 23.4???

[Peter Dyballa <Peter_Dyballa@Web.DE>]

Am 28.07.2012 um 05:11 schrieb rusi:

> Now emacs23.3 could start.
> And I get the same error.
> 
> So its not an emacs change that has caused the breakage but something
> else outside.

When I understand you correctly then you are using now a different OS (release). That one can have slightly different font services, because the two releases don't have the same fonts installed and might also have different setup files for the font services. On Linux you have two different font services: one related to the X server, based on 'xset fp' and used by xlsfonts, xfontsel, xfd, and some user-side font service, based on libfontconfig. This service uses files like fonts.conf or ~ /.fonts.conf and can be accessed via fc-cache, fc-list, fc-match.

GNU Emacs might need at one moment a mono-spaced character from the Unicode Arrows block at a particular size and with the features normal weight and upright. It asks the font service: “Gimme that thing!” Or it better asks for the whole block with that character to insert it completely into the active ad-hoc fontset. That's approximately how font handling in GNU Emacs recently works.

To become independent from coincidence you'd need to check whether a font with some properties (glyphs, features like spacing, width, weight, etc.) exists. Then make your choice of fonts and build the fontset.

--
Greetings

  Pete

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