[Fontconfig] FC_LIB_VERSION?

[Akira TAGOH]

On Mon, Dec 18, 2017 at 3:26 AM, Behdad Esfahbod <behdad at behdad.org> wrote:
> Hi,
>
> Should we add a FC_LIB_VERISION "libversion" element that is automatically
> (ideally before FcDefaultSubstitute; but how?) set to fontconfig library

maybe doing that in the config file and read it early or put it in
fonts.conf where is earlier than reading sub dirs? I have no idea more
than that at this moment.

> version as returned by FC_VERSION?  This would allow third-party config
> files to behave correctly with different versions of the library.  This was
> motivated by seeing Twemoji's config file for example, which is needed for
> older versions of fontconfig that didn't have proper emoji support, but not
> with newer versions...
>
> A constant is probably more appropriate, but a pattern element. But don't
> know if those can be tested easily.
>
> --
> behdad
> http://behdad.org/
>
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-- 
Akira TAGOH