Re: Font selection weirdness

[Jason Rumney <jasonr@gnu.org>]

Juanma Barranquero wrote:

> where the props are [abbreviated]
>
> type: gdi
> foundry: outline
> family: Symbol
> name: "-outline-Symbol-normal-normal-normal-decorative-13-*-*-*-p-*-ms-symbol"
> format: type1
>   

On my system, Symbol shows up as an Opentype font, but it does not 
appear to contain a Unicode mapping table - the character set selector 
in Windows Character Map is greyed out, and selecting the "FOR ALL" 
character in Character Map (0x22) and copying it and pasting elsewhere 
results in ASCII 0x22 (") being pasted.
If I can figure out a way to determine such fonts when enumerating we 
can avoid tagging them as supporting Unicode and glyph points, the same 
way we do now with bitmap fonts.

> A weird thing: w32_font->font.glyph_index is 16 when entering
> compute_metrics, however code = 8704 (U+2200), which is not a glyph.
> Is that correct?
>   

I think that is due to the same problems as above. Perhaps 
GetCharacterPlacementW in w32font_encode_char did not return an error as 
expected, and just silently copied the Unicode code point to the glyph 
code point. Another posibility is that w32font_encode_char has not been 
called for that character yet, which would be a bug somewhere in Emacs.