Fixes https://travis-ci.org/robofab-developers/fontParts/jobs/402178235#L499
Instead of passing a unicode string to lxml.etree.fromstring, which must not have
an XML declaration containing an explicit encoding, we now pass a UTF-8 bytes string.
The latter may or may not have the xml declaration. If it doesn't, UTF-8 is implied
by lxml parser (libxml2 defaults to UTF-8 internally).
the writeGlyphToString will still return a unicode string, like it's always done.
However, in the writeGlyph method we can call a private _writeGlyphToBytes and
write UTF-8 bytes directly instead of decoding them, then re-encoding them as
we write to the file.
by encoding as integers all float values that have no decimal portion.
This optimization is expected to reduce the file size of CFF2 fonts that have intermediate masters.
Related to https://github.com/adobe-type-tools/afdko/issues/444
Many thanks to @cjchapman for the help on the fixed point math
To avoid the 'No handlers could be fonud' message, from now on, one should always
configure logging in one's scripts or applications.
logging.basicConfig, or fontTools.configLogger (with some predefined defaults
useful for fonttools scripts) can be used to quickly configure logging.
Read the python docs for more advanced logging usage.
this is the mapping between the half of each percentage intervals and
the associated usWidthClass:
{56.25: 1,
68.75: 2,
81.25: 3,
93.75: 4,
106.25: 5,
118.75: 6,
137.5: 7,
175.0: 8}
Notice how wdth=80 (in the adjusted test case) will fall in width class
3, instead of 4, because it is < 81.25, thus closer to the nominal 75
than to 87.5.
Oops. Was introduced when I last changed modeling.
The problem was, for checking that a previous master m is outside the current
influence box of the current master, I was doing "not (lower < m[loc] < upper)".
This is wrong, where lower,peak,upper is the support of previous master.
This fails if lower == peak == m[loc], or m[loc] == peak == upper.
Fixes https://github.com/fonttools/fonttools/issues/1269#issuecomment-397655016
