Fonttools: Double-byte Unicodes?

[laerm0]

Hi –

It looks like TTX can't handle double-byte Unicodes. I dumped a TTF, edited a few Unicodes, and then when going back to TTF, I won this error:

Traceback (most recent call last): File "/usr/local/lib/python3.6/site-packages/fontTools/ttx.py", line 398, in main process(jobs, options) File "/usr/local/lib/python3.6/site-packages/fontTools/ttx.py", line 372, in process action(input, output, options) File "/usr/local/lib/python3.6/site-packages/fontTools/misc/loggingTools.py", line 372, in wrapper return func(*args, **kwds) File "/usr/local/lib/python3.6/site-packages/fontTools/ttx.py", line 290, in ttCompile ttf.save(output) File "/usr/local/lib/python3.6/site-packages/fontTools/ttLib/ttFont.py", line 172, in save writer_reordersTables = self._save(tmp) File "/usr/local/lib/python3.6/site-packages/fontTools/ttLib/ttFont.py", line 211, in _save self._writeTable(tag, writer, done, tableCache) File "/usr/local/lib/python3.6/site-packages/fontTools/ttLib/ttFont.py", line 632, in _writeTable tabledata = self.getTableData(tag) File "/usr/local/lib/python3.6/site-packages/fontTools/ttLib/ttFont.py", line 650, in getTableData return self.tables[tag].compile(self) File "/usr/local/lib/python3.6/site-packages/fontTools/ttLib/tables/_c_m_a_p.py", line 118, in compile chunk = table.compile(ttFont) File "/usr/local/lib/python3.6/site-packages/fontTools/ttLib/tables/_c_m_a_p.py", line 829, in compile charCodeArray = array.array("H", endCode + [0] + startCode) OverflowError: unsigned short is greater than maximum

[khaledhosny]

You probably need to change the cmap subtable as well, since characters beyond basic multilingual plane can’t be represented by older subtables, see cmap documentation.

[anthrotype]

Correct

[laerm0]

The only place to change encoding in this font is in the cmap, and I changed both (0,3,0 and 3,1,0), and it's the only thing I changed, so I dunno where else you think I could've changed it.

[anthrotype]

You need a cmap subtable format that supports characters beyond the BMP, like format 12

[laerm0]

Oh, duh. Sorry! Thanks.

[anthrotype]

No problem!

[campbellgraphics]

Isn't this only supported in the format 12 subtable?

On Tue, Jul 17, 2018, 1:51 PM Micah Stupak [e-mail] wrote:

The only place to change encoding in this font is in the cmap, and I
changed both (0,3,0 and 3,1,0), and it's the only thing I changed, so I
dunno where else you think I could've changed it.

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[davelab6]

Could there be a more informative error message?