[Fontconfig] Can we use base 16, and not 85, for ASCII charset representations?

W. Trevor King wking at tremily.us
Mon Sep 23 11:47:59 PDT 2013

On Mon, Sep 23, 2013 at 02:25:45PM -0400, Behdad Esfahbod wrote:
> Also, make it easy to ask for fonts having a specific character by
> making it easy to parse a simple set, something like this for
> example:
> $ fc-match :charset={06cc,064a}

I haven't had time to look this up yet, but I imagine fontconfig
currently only matches charsets exactly.  It would be nice to search
for “all fonts containing at least <charset>”.  “all fonts containing
a charset that exactly matches <charset>” doesn't seem as useful, but
perhaps “all fonts containing any of <charset>” may be useful.
Borrowing from set theory, how about:

     All fonts whose charset exactly matches {06cc,064a}.
     The intersection of {06cc,064a} and the font's charset is not
     empty (all fonts containing any of {06cc,064a})
     {06cc,064a} is a subset of the font's charset (all fonts
     containing at least {06cc,064a})
     {06cc,064a} is a superset of the font's charset (all fonts
     containing no characters outside of {06cc,064a})

I'm mostly interested in the subset query (>{XXXX,…}).  Do folks want
any of the others?


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