* Replaced all from ...py23 import * with explicit name imports, or removed completely when possible.
* Replaced tounicode() with tostr()
* Changed all BytesIO ans StringIO imports to from io import ..., replaced all UnicodeIO with StringIO.
* Replaced all unichr() with chr()
* Misc minor tweaks and fixes
The AAT `ankr` anchor point table is an auxiliary table for `kerx`,
used to store anchor overrides in case the glyph itself does not
supply the needed anchors as control points. Among the fonts that
come pre-installed with MacOS 10.12.6, `ankr` is used by a handful
of non-Latin fonts such as “Myanmar MN”, “Devanagari Sangam MN”,
and “Arial HB”.
https://developer.apple.com/fonts/TrueType-Reference-Manual/RM06/Chap6ankr.html
Other metamorphosis types are not yet supported and will raise an error
upon decompilation. The TTX tool catches the error and continues to emit
a hexdump of the table contents, just as before this change.
Interestingly, this can handle the examples from the AAT specification
(which are part of the unit tests), and also most AAT fonts on my disk.
However, some other AAT fonts such as Apple Chancery cannot be decompiled.
The failure seems to be a general problem with how fonttools decompiles
AAT lookups of format 4, and unrelated to this present change.
There are also some new files, for SING glyphlet support, that you
may or may not want to add, because they are not in the OpenType spec.
M_E_T_A_.py # SING glyphlet meta data table. see
'http://partners.adobe.com/public/developer/opentype/gdk/topic.html"
S_I_N_G_.py # SING glyphlet basic info. See same web site as for META
data table.
G_M_A_P_.py # Summary of sing glyphlet info that has been stuck into
a parent font. Not documented anywhere yet.
G_P_K_G_.py # Opaque wrapper for SING glyphlet info; travels with
application document. Is also stuck into augmented parent font. Not
documented anywhere yet
git-svn-id: svn://svn.code.sf.net/p/fonttools/code/trunk@507 4cde692c-a291-49d1-8350-778aa11640f8
