https://bugs.freedesktop.org/show_bug.cgi?id=78452

https://bugs.freedesktop.org/show_bug.cgi?id=19375

glibc 2.25+ has now defined these macros in <limits.h>
https://sourceware.org/git/?p=glibc.git;a=commit;h=5b17fd0da62bf923cb61d1bb7b08cf2e1f1f9c1a

Create an alias for FC_CHAR_WIDTH for ABI compatibility
Signed-off-by: Khem Raj <raj.khem@gmail.com>

Take a look at the nano second in the mtime to figure out
if the cache needs to be updated if available.
and do the mutex lock between scanning and writing a cache
to avoid the conflict.

Also we don't need to scan directories again after writing
caches. so getting rid of the related code as well.

https://bugs.freedesktop.org/show_bug.cgi?id=69845

and for reference:

https://bugzilla.redhat.com/show_bug.cgi?id=1236034

just setting FC_MATCH=3 shows a lot of information and hard to keep on track for informamtion
which is really necessary to see. to use this more effectively, added FC_DBG_MATCH_FILTER to
see for what one really want to see. it takes a comma-separated-list of object names.
If you want to see family name only, try like this:

FC_DBG_MATCH_FILTER=family FC_DEBUG=4096 fc-match

debugging output will be filtered out and see family only in the result.

Reported by Jia Wang

https://bugs.freedesktop.org/show_bug.cgi?id=83770

Adds FC_SYMBOL.

This affects fonts having a cmap with platform 3 encoding 0.
We now map their glyphs from the PUA area to the Latin1 area.

See thread "Webdings and other MS symbol fonts don't display"
on the mailing list.

Test before/after with:
$ pango-view --markup --text='<span fallback="false">&#xd7;&#xf0d7;</span>' --font=Wingdings

Use FC_MATRIX instead.

https://bugs.freedesktop.org/show_bug.cgi?id=90257

FcPattern isn't compatible to the older.

Only adds "color" to pattern if FreeType version supports color.

Based on patch from Jungshik Shin.

https://bugs.freedesktop.org/show_bug.cgi?id=82876

Rest of Part of https://bugs.freedesktop.org/show_bug.cgi?id=81453

Adds new API:

	FcWeightFromOpenType()
	FcWeightToOpenType()

Such that Regular is closer to Medium than to DemiLight

Part of https://bugs.freedesktop.org/show_bug.cgi?id=81453
Also hooks up FC_WEIGHT_BOOK to fcfreetype.c.

It was added without proper measurement and a fuzzy possible
use-case (font servers) in mind, but reality check shows that
this significantly slows down caching.  As such, deprecate it
and do NOT compute hash during caching.

Makes caching two to three times faster (ignoring the 2 second
delay in fc-cache).

This feature requires the FreeType 2.5.1 or later at the build time.

Besides <range> element allows <double> elements with this changes.

This may breaks the cache but not bumping in this change sets at this moment.
please be aware if you want to try it and run fc-cache before/after to
avoid the weird thing against it.

This change reverts 9acc14c3
because it doesn't work as expected when building
with -fshort-enums which is default for older arms ABIs

Thanks for pointing this out, Thomas Klausner, Valery Ushakov, and Martin Husemann