On Tue, Oct 23, 2018 at 11:58 AM Marcel Krüger <t...@2krueger.de> wrote:
> ---- On Tue, 23 Oct 2018 11:21:33 +0200 luigi scarso <
> luigi.sca...@gmail.com> wrote ----
> >
> >
> > On Tue, Oct 23, 2018 at 10:53 AM Marcel Krüger <t...@2krueger.de> wrote:
> > Hi,
> >
> > another bug in LuaTeX: If LuaTeX tries to calculate the size of a CFF
> table where the second entry in the table is a real number,
> > `pack_real` is called with `work_buffer+i` for a small `i`.
> > This causes aliasing issues because `work_buffer` writes into
> `work_buffer` using `sprintf`.
> > So the output from `pack_real` modifies `work_buffer` before the
> digits are read completely,
> > causing LuaTeX to complain about a "invalid character".
> >
> > An example to reproduce the issue:
> >
> > Run the following plainTeX document with the attached version of
> `LOGO10.otf` (the font was created by reordering
> > the Private table entries and has an invalid checksum, but this is
> ignored by LuaTeX)
> > hm, not sure about invalid checksum... can you try to fix it with ttx
> ? (be careful, change the name of the new otf ie CFFFont name etc)
> > --luigi
>
> I already tried, but tty always stores the BlueValues first. I originally
> triggered this when I had a font which had fractional BlueValues which
> are replaced by whole
> So fixing the checksum would need some other tool or manual calculation,
> but I do
> not think it is worth it: LuaTeX does not care (I regularly use
> auto-generated fonts with all checksums set to zero
> without problems)
> Also there are no checksums in the actual CFF part, only in the OTF
> wrapper which is mostly ignored anyway.
>
ok, I will check.
My ttx looks ok
\directlua{
font.current(font.define{
name='logo',
embedding='subset',
encodingbytes=2,
format='opentype',
filename='LOGO10a.otf',
characters={
[0x41] = {
width = 1000,
height = 1000,
depth = 1000,
index = 0x2,
}
},
})
}
A
\bye
--
luigi
LOGO10.otf
Description: application/vnd.oasis.opendocument.formula-template
LOGO10a.otf
Description: application/vnd.oasis.opendocument.formula-template
LOGO10.ttx
Description: application/font-ttx
LOGO10a.ttx
Description: application/font-ttx
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