Re: [NTG-context] LuaTeX-plain File Database Problem
On Thu May 15 23:07:40 2014, Aditya Mahajan wrote: > On Thu, 15 May 2014, Aíre Funvake wrote: > >> Hi all, >> >> Never felt so incompetent in my life -- just cannot get LuaTeX to >> find fonts or `*.tex` files for use with `\input `, or >> `font\xxx = `. Even though, these commands were >> executed (all I could find): >> >> mktexlsr >> mtxrun --script base --generate >> luatools --generate >> context --generate >> mtxrun --script fonts --update --force >> mtxrun --script fonts --udpate --simple >> >> Tried putting files in (in the roots and subdirectories): >> >> ~/texmf >> ~/ctx/tex/texmf-project >> ~/ctx/tex/texmf-local >> ~/ctx/tex/texmf-fonts >> >> Checked if the file could be found: >> >> luatools --find-file .tex <--- finds it >> luatools --find-file xxx.otf<--- finds it >> mtxrun --locate .tex<--- finds it >> mtxrun --locate xxx.otf <--- finds it >> kpsewhich/where <--- finds only if in `~/texmf` >> >> In .tex file (even when files are in `~/texmf` dir): >> >> \input or .tex<--- no luck >> \font\myfont = name:<--- no luck >> \font\myfont = file:.otf<--- no luck >> >> Sorry, but reading and searching for hours did not bring any solu- >> tion. Not sure if there is a configuration file like `texmf.cnf` or >> the `context.cnf` that must be modified, or and environment var- >> iable like `TEXMFHOME` (default seems to be `~/texmf`, and that's >> OK, if only it would only work). >> >> Sorry to spam this list with questions which may seem very >> fundamental to you. Hope to be able to reciprocate sometime. >> What am I missing? > > Read about TDS (TeX Directory Structure). > > You need to put files in $TEXMF/tex/plain/ subdirectory for Plain > format to find it, or in $TEXMF/tex/generic/ subdirectory for all > macro packages (plain, latex, context) to find it. > > Aditya > Thank you, will re-read it forthwith, must have missed something. It just feels wrong to put re-usable project files inside the distribution tree. Still feel like an idiot, if not more so. Can anyone enlighten me then as to the purpose of `$HOME/texmf`, `$TEXMF/tex/texmf-local`, `$TEXMF/tex/texmf-fonts`, etc., considering they are all, for example, configured in the file: `$TEXMF/tex/texmf/web2c/texmf.cnf`? Which I assumed incorrectly it seems, the name resolvers would use. Thanks a lot again, I realise this must be beneath you all, Aíre. ___ If your question is of interest to others as well, please add an entry to the Wiki! maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context webpage : http://www.pragma-ade.nl / http://tex.aanhet.net archive : http://foundry.supelec.fr/projects/contextrev/ wiki : http://contextgarden.net ___
Re: [NTG-context] LuaTeX-plain File Database Problem
On Thu, 15 May 2014, Aíre Funvake wrote: Hi all, Never felt so incompetent in my life -- just cannot get LuaTeX to find fonts or `*.tex` files for use with `\input `, or `font\xxx = `. Even though, these commands were executed (all I could find): mktexlsr mtxrun --script base --generate luatools --generate context --generate mtxrun --script fonts --update --force mtxrun --script fonts --udpate --simple Tried putting files in (in the roots and subdirectories): ~/texmf ~/ctx/tex/texmf-project ~/ctx/tex/texmf-local ~/ctx/tex/texmf-fonts Checked if the file could be found: luatools --find-file .tex <--- finds it luatools --find-file xxx.otf<--- finds it mtxrun --locate .tex<--- finds it mtxrun --locate xxx.otf <--- finds it kpsewhich/where <--- finds only if in `~/texmf` In .tex file (even when files are in `~/texmf` dir): \input or .tex<--- no luck \font\myfont = name:<--- no luck \font\myfont = file:.otf<--- no luck Sorry, but reading and searching for hours did not bring any solu- tion. Not sure if there is a configuration file like `texmf.cnf` or the `context.cnf` that must be modified, or and environment var- iable like `TEXMFHOME` (default seems to be `~/texmf`, and that's OK, if only it would only work). Sorry to spam this list with questions which may seem very fundamental to you. Hope to be able to reciprocate sometime. What am I missing? Read about TDS (TeX Directory Structure). You need to put files in $TEXMF/tex/plain/ subdirectory for Plain format to find it, or in $TEXMF/tex/generic/ subdirectory for all macro packages (plain, latex, context) to find it. Aditya ___ If your question is of interest to others as well, please add an entry to the Wiki! maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context webpage : http://www.pragma-ade.nl / http://tex.aanhet.net archive : http://foundry.supelec.fr/projects/contextrev/ wiki : http://contextgarden.net ___
Re: [NTG-context] Bug with TikZ module ?
On Thu, 15 May 2014, Fabrice Couvreur wrote:
Hi,
Why the three words are not aligned on the baseline ?
Regards,
Fabrice
\usemodule[tikz]
\starttext
\starttikzpicture[level/.style={sibling distance=10mm}]
\node{}[grow=right]
child{node{J}}
child{node{R}}
child{node{B}
child{node{J}}
child{node{R}}
child{node{B}
child{node{J}}
child{node{R}}
child{node{B}}}
};
\node at (3,-0.75) {$\vdots$};
\node at (4.5,0.25) {$\vdots$};
\node at (1.5,-2.5) {toit};
\node at (3,-2.5) {fenêtre};
\node at (4.5,-2.5) {porte};
\stoptikzpicture
\stoptext
You have the same result with LaTeX, so the bug is not with ConTeXt. TikZ
is aligning at the bottom of the box rather than at the baseline.
IIRC, there is an option to "align at baseline" in TikZ. Otherwise, you
can try adding `\strut` in each of the labels, so:
\node at (...) {\strut ...} ;
etc.
Aditya___
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[NTG-context] LuaTeX-plain File Database Problem
Hi all, Never felt so incompetent in my life -- just cannot get LuaTeX to find fonts or `*.tex` files for use with `\input `, or `font\xxx = `. Even though, these commands were executed (all I could find): mktexlsr mtxrun --script base --generate luatools --generate context --generate mtxrun --script fonts --update --force mtxrun --script fonts --udpate --simple Tried putting files in (in the roots and subdirectories): ~/texmf ~/ctx/tex/texmf-project ~/ctx/tex/texmf-local ~/ctx/tex/texmf-fonts Checked if the file could be found: luatools --find-file .tex <--- finds it luatools --find-file xxx.otf<--- finds it mtxrun --locate .tex<--- finds it mtxrun --locate xxx.otf <--- finds it kpsewhich/where <--- finds only if in `~/texmf` In .tex file (even when files are in `~/texmf` dir): \input or .tex<--- no luck \font\myfont = name:<--- no luck \font\myfont = file:.otf<--- no luck Sorry, but reading and searching for hours did not bring any solu- tion. Not sure if there is a configuration file like `texmf.cnf` or the `context.cnf` that must be modified, or and environment var- iable like `TEXMFHOME` (default seems to be `~/texmf`, and that's OK, if only it would only work). Sorry to spam this list with questions which may seem very fundamental to you. Hope to be able to reciprocate sometime. What am I missing? Thank you kindly, Aíre. ___ If your question is of interest to others as well, please add an entry to the Wiki! maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context webpage : http://www.pragma-ade.nl / http://tex.aanhet.net archive : http://foundry.supelec.fr/projects/contextrev/ wiki : http://contextgarden.net ___
Re: [NTG-context] [OT] Typographical quality of various engines
On Thu, May 15, 2014 at 8:26 PM, Jan Tosovsky wrote: > On 2014-05-15 luigi scarso wrote: > > On 5/14/2014 10:21 PM, Jan Tosovsky wrote: > > > > > > I've finished a rough comparision of various engines for > > > their typographical quality: http://drifted.in/publishing/ > > > > Another point could be the "server" property... the swiglib project is > > an attempt to cover this side > > > > https://swiglib.foundry.supelec.fr/ > > I am sad seeing lot of technical details without single sentence covering > benefits for the end user... > > It depends on the "end user" term. It's the other side of digital typography: high speed of "low quality" jobs, where the core is the automatic workflow and the "end user" is often a "traditional programmer" . -- luigi ___ If your question is of interest to others as well, please add an entry to the Wiki! maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context webpage : http://www.pragma-ade.nl / http://tex.aanhet.net archive : http://foundry.supelec.fr/projects/contextrev/ wiki : http://contextgarden.net ___
Re: [NTG-context] [OT] Typographical quality of various engines
On 2014-05-15 luigi scarso wrote: > On 5/14/2014 10:21 PM, Jan Tosovsky wrote: > > > > I've finished a rough comparision of various engines for > > their typographical quality: http://drifted.in/publishing/ > > Another point could be the "server" property... the swiglib project is > an attempt to cover this side > > https://swiglib.foundry.supelec.fr/ I am sad seeing lot of technical details without single sentence covering benefits for the end user... Jan ___ If your question is of interest to others as well, please add an entry to the Wiki! maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context webpage : http://www.pragma-ade.nl / http://tex.aanhet.net archive : http://foundry.supelec.fr/projects/contextrev/ wiki : http://contextgarden.net ___
Re: [NTG-context] [OT] Typographical quality of various engines
On Thu, May 15, 2014 at 7:39 PM, Jan Tosovsky wrote: > On 2014-05-15 Hans Hagen wrote: > > On 5/14/2014 10:21 PM, Jan Tosovsky wrote: > > > Dear All, > > > > > > I've finished a rough comparision of various engines for their > > > typographical quality: http://drifted.in/publishing/ > > > > > > From my point of view the ConTeXt is the best offering in this > > > field to date, so congratulation! > > > > > > If you find something inappropriate or misleading in my text, please > > > comment or let me know. > > > > > > If my ConTeXt examples could be written more efficiently, I am open > > > to fix it. > > > > Font expansion only, applied to a limited character subset > > > > Is that true? It is applied to any character that you want, of course > > given that you associate expansion factors, but that happens for quite > > some characters in context. > > Good point, it should be clarified it is a default vector set, which can be > further customized (extended). > My info is based on this Wiki http://wiki.contextgarden.net/Protrusion > pointing to this source code: > http://source.contextgarden.net/font-ext.lua > > By that subset I mean the table vectors['default'] > > > > Concerning homogenization, context has support for dynamically aplying > > feature (alternates) to improve the look and feel but of course not > > many fonts have multiple variants for glyphs grouped in stylistic > > alternates so this mechanism is hardly used (only for some arabic). > > Yes, I am aware of this, but it is indeed not very obvious from the text. > > Thanks for your suggestions, > > Jan > > Another point could be the "server" property... the swiglib project is an attempt to cover this side https://swiglib.foundry.supelec.fr/ -- luigi ___ If your question is of interest to others as well, please add an entry to the Wiki! maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context webpage : http://www.pragma-ade.nl / http://tex.aanhet.net archive : http://foundry.supelec.fr/projects/contextrev/ wiki : http://contextgarden.net ___
Re: [NTG-context] [OT] Typographical quality of various engines
On 5/15/2014 7:39 PM, Jan Tosovsky wrote: On 2014-05-15 Hans Hagen wrote: On 5/14/2014 10:21 PM, Jan Tosovsky wrote: Dear All, I've finished a rough comparision of various engines for their typographical quality: http://drifted.in/publishing/ From my point of view the ConTeXt is the best offering in this field to date, so congratulation! If you find something inappropriate or misleading in my text, please comment or let me know. If my ConTeXt examples could be written more efficiently, I am open to fix it. Font expansion only, applied to a limited character subset Is that true? It is applied to any character that you want, of course given that you associate expansion factors, but that happens for quite some characters in context. Good point, it should be clarified it is a default vector set, which can be further customized (extended). My info is based on this Wiki http://wiki.contextgarden.net/Protrusion pointing to this source code: http://source.contextgarden.net/font-ext.lua By that subset I mean the table vectors['default'] yes but we also initialize all similar shapes Concerning homogenization, context has support for dynamically aplying feature (alternates) to improve the look and feel but of course not many fonts have multiple variants for glyphs grouped in stylistic alternates so this mechanism is hardly used (only for some arabic). Yes, I am aware of this, but it is indeed not very obvious from the text. Thanks for your suggestions, Jan ___ If your question is of interest to others as well, please add an entry to the Wiki! maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context webpage : http://www.pragma-ade.nl / http://tex.aanhet.net archive : http://foundry.supelec.fr/projects/contextrev/ wiki : http://contextgarden.net ___ -- - Hans Hagen | PRAGMA ADE Ridderstraat 27 | 8061 GH Hasselt | The Netherlands tel: 038 477 53 69 | voip: 087 875 68 74 | www.pragma-ade.com | www.pragma-pod.nl - ___ If your question is of interest to others as well, please add an entry to the Wiki! maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context webpage : http://www.pragma-ade.nl / http://tex.aanhet.net archive : http://foundry.supelec.fr/projects/contextrev/ wiki : http://contextgarden.net ___
Re: [NTG-context] [OT] Typographical quality of various engines
On 2014-05-15 Hans Hagen wrote: > On 5/14/2014 10:21 PM, Jan Tosovsky wrote: > > Dear All, > > > > I've finished a rough comparision of various engines for their > > typographical quality: http://drifted.in/publishing/ > > > > From my point of view the ConTeXt is the best offering in this > > field to date, so congratulation! > > > > If you find something inappropriate or misleading in my text, please > > comment or let me know. > > > > If my ConTeXt examples could be written more efficiently, I am open > > to fix it. > > Font expansion only, applied to a limited character subset > > Is that true? It is applied to any character that you want, of course > given that you associate expansion factors, but that happens for quite > some characters in context. Good point, it should be clarified it is a default vector set, which can be further customized (extended). My info is based on this Wiki http://wiki.contextgarden.net/Protrusion pointing to this source code: http://source.contextgarden.net/font-ext.lua By that subset I mean the table vectors['default'] > Concerning homogenization, context has support for dynamically aplying > feature (alternates) to improve the look and feel but of course not > many fonts have multiple variants for glyphs grouped in stylistic > alternates so this mechanism is hardly used (only for some arabic). Yes, I am aware of this, but it is indeed not very obvious from the text. Thanks for your suggestions, Jan ___ If your question is of interest to others as well, please add an entry to the Wiki! maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context webpage : http://www.pragma-ade.nl / http://tex.aanhet.net archive : http://foundry.supelec.fr/projects/contextrev/ wiki : http://contextgarden.net ___
[NTG-context] Bug with TikZ module ?
Hi,
Why the three words are not aligned on the baseline ?
Regards,
Fabrice
\usemodule[tikz]
\starttext
\starttikzpicture[level/.style={sibling distance=10mm}]
\node{}[grow=right]
child{node{J}}
child{node{R}}
child{node{B}
child{node{J}}
child{node{R}}
child{node{B}
child{node{J}}
child{node{R}}
child{node{B}}}
};
\node at (3,-0.75) {$\vdots$};
\node at (4.5,0.25) {$\vdots$};
\node at (1.5,-2.5) {toit};
\node at (3,-2.5) {fenêtre};
\node at (4.5,-2.5) {porte};
\stoptikzpicture
\stoptext
___
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maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context
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archive : http://foundry.supelec.fr/projects/contextrev/
wiki : http://contextgarden.net
___
Re: [NTG-context] LuaTeX-plain OpenType Features Select
· > On Wed May 14 00:16:54 2014, Philipp Gesang wrote: > > That’s correct. The “color” key triggers a custom callback that > > tints every glyph of the defined font. It’s part of Luaotfload > > solely for compatibility for Xetex. IMO it’s not worth the > > hassle; I recommend using a proper color package instead. > > > Thank you for the kind advice, Philipp. Is there a color package > that works with ConTeXt's luatex-plain.fmt that you can suggest? Never tried that, sorry. Have you searched CTAN? If that leads nowhere I recommend asking on http://tex.stackexchange.com. Best, Philipp pgpH4kKkkGkRF.pgp Description: PGP signature ___ If your question is of interest to others as well, please add an entry to the Wiki! maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context webpage : http://www.pragma-ade.nl / http://tex.aanhet.net archive : http://foundry.supelec.fr/projects/contextrev/ wiki : http://contextgarden.net ___
[NTG-context] Access to fonts in /usr/share/fonts/X11/
ConTeXt is working fine,and I am pretty sure that OSFONTDIR is set correctly I have recently run mtxrun --script fonts --reload and context --generate I am able to see/use fonts in the /usr/share/fonts/opentype and /usr/share/fonts/truetype I can see/use *some* of the fonts in the /usr/share/fonts/X11/ directory: mtxrun --script fonts --list --all --pattern=Symbol* symbol symbol /usr/share/fonts/X11/Type1/Symbol.afm symbolbold symbol /usr/share/fonts/X11/Type1/Symbol.afm ls -l /usr/share/fonts/X11/Type1/Symbol.* /usr/share/fonts/X11/Type1/Symbol.afm -> ../../type1/mathml/Symbol.afm /usr/share/fonts/X11/Type1/Symbol.pfb -> ../../type1/mathml/Symbol.pfb But I can't see with mtxrun (or use in documents) *many* of the fonts in this directory: mtxrun --script fonts --list --all --pattern=Dorian* ls -l /usr/share/fonts/X11/Type1/Dorian* /usr/share/fonts/X11/Type1/DorianCLM-Book.afm /usr/share/fonts/X11/Type1/DorianCLM-Book.pfa I note that the fonts that I can use appear to be symbolic links to a different directory. Thank you very much for advice. Best, Michael I'm using mtx-context | ConTeXt Process Management 0.60 mtx-context | mtx-context | main context file: /opt/context/tex/texmf-context/tex/context/base/context.mkiv mtx-context | current version: 2014.04.28 23:24 on linux (ubuntu 14.04) -- Michael Ash, Chair, Department of Economics Professor of Economics and Public Policy University of Massachusetts Amherst Amherst, MA 01003 Email m...@econs.umass.edu Tel +1-413-545-2590 Twitter https://twitter.com/michaelaoash ___ If your question is of interest to others as well, please add an entry to the Wiki! maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context webpage : http://www.pragma-ade.nl / http://tex.aanhet.net archive : http://foundry.supelec.fr/projects/contextrev/ wiki : http://contextgarden.net ___
Re: [NTG-context] [OT] Turing award for Leslie Lamport
On Thu, Mar 20, 2014 at 8:49 AM, Mojca Miklavec < mojca.miklavec.li...@gmail.com> wrote: > Now that both Kruth (TeX) and Leslie Lamport (LaTeX) won the Turing award > http://amturing.acm.org/award_winners/lamport_1205376.cfm > https://www.youtube.com/watch?v=pgWTmOyUjtM -- luigi ___ If your question is of interest to others as well, please add an entry to the Wiki! maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context webpage : http://www.pragma-ade.nl / http://tex.aanhet.net archive : http://foundry.supelec.fr/projects/contextrev/ wiki : http://contextgarden.net ___
Re: [NTG-context] LuaTeX-plain OpenType Features Select
On Wed May 14 00:16:54 2014, Philipp Gesang wrote:
> ·
>
>> On 5/13/2014 8:16 PM, Aíre Funvake wrote:
>>> On Tue May 13 19:56:34 2014, Hans Hagen wrote:
On 5/13/2014 7:48 PM, Aíre Funvake wrote:
> On Mon May 12 23:12:06 2014, Aíre Funvake wrote:
>> On 2014-05-12, 22:59 , Aíre Funvake wrote:
>>> On Mon May 12 22:52:43 2014, Hans Hagen wrote:
On 5/12/2014 10:46 PM, Aíre Funvake wrote:
> On Mon May 12 22:01:04 2014, Hans Hagen wrote:
>> On 5/12/2014 9:48 PM, Aíre Funvake wrote:
>>> Hi all,
>>>
>>> Trying to select "slashed zero" and "lining figures" from a
>>> font. For Lucida Bright OT, as another example, +scmp works,
>>> but not for Charter ITC Pro. But the font that concerns me
>>> the most right now, is TheSansMono Condensed...
>>>
>>> Font URL:
>>> http://www.lucasfonts.com/fonts/thesansmono/thesansmono-condensed/features/
>>>
>>>
>>>
>>>
>>> PDF Info:
>>> https://dl.dropboxusercontent.com/u/6613992/TheSansMonoCd-info.pdf
>>>
>>> 8<---minimal example>8
>>> \newdimen\fntcodesz
>>> \fntcodesz = 11.5pt
>>> \font\kwr = name:thesansmonocdw5regular:+lnum;+zero at \fntcodesz
>>> \kwr
>>> 0123456789
>>> \bye
>>> 8<-->8
>>
>> sometimes you need to select a script/language combination too
>> or when
>> digits are concerned disable oldstyle
>
> I'm too inexperienced to know what that means, or how to apply that.
there is some info in font manuals and the context wiki
> I've opened the font in FontForge, and can see the glyphs I'm
> looking for, but again, it does not carry much applicable meaning
> for me. For example, can I use this information?:
>
> Slash 0, Lining Figures: (0x10120) U+0030 "zero.lf.slashed" DIGIT
> ZERO
> 1, Lining Figures: (0x10121) U+0031 "one.lf" DIGIT ONE
> ...
> Slash 0, "Basic": (0x1012b) U+0030 "zero.basic.slashed" DIGIT ZERO
> 1, "Basic": (0x1012c) U+0031 "one.basic" DIGIT ONE
> ...
so you need to select the lnum feature too
>>> Was this not it?:
>>> ...
>>> \font\kwr = name:thesansmonocdw5regular:+lnum;+zero at \fntcodesz
>>> ...
>>> But thanks; will keep on reading; if solution found, will add it here.
>>> Regards,
>>> Aíre
>>>
>> Solution:
>> \font\tt = name:thesansmonocdw5regular:script=latn;+lnum;+zero} at 12pt
>> Thank you!
>>
>
> Spoke too soon. The "zero.slashed" is selected, instead of
> "zero.lf.slashed",
> so that the zero is smaller than the rest of the lining figure numbers.
> In
> desperation, tried luatex with 'luaotfload.sty' under TeXLive2013, and
> it
> worked fine. `;color=XX` also works with `luaotfload`, but not with
> LuaTeX-plain from ConTeXt.
no, and that is unlikely to show up in context as it makes no sense to
specify colors that way .. just use the normal color commands
> Any ideas would be welcome. Exhausted Google query permutations and most
> font info if for LaTeX, pdfTeX, pdfLaTeX, LuaLaTeX or ConTeXt.
>
> Can I maybe as a hack switch the glyphs, or something?
how about adding
mode=node
in the plain setup (often not needed in context)
Hans
>>> Thanks for the reply. Tried `mode=node`. Read about it, but never
>>> thought
>>> of putting it here!? The correct specification then is:
>>>
>>> \font\mono = {TheSansMonoCd-W5Regular:%
>>> script=latn;+lnum;+zero;mode=node} at \fntsze
>>>
>>> Confused about the color though. Read most of luatexref-t.pdf, and may
>>> have missed it. The only reference (and it works in `luaotfload` under
>>> TeXLive2013) is like this:
>>>
>>> \font\mono = {TheSansMonoCd-W5Regular:%
>>> script=latn;+lnum;+zero;mode=node;color=336699} at \fntsze
>>>
>>
>> so it looks like oftload adds that (or maybe the latex font definition
>> code) but even then, it's probably implemented someplace else in the
>> latex code
>>
>>> Found no other reference to setting color on fonts in LuaTeX-plain (the
>>> ConTeXt version). Would love a pointer to the information though.
>>
>> it must be something latex i think (maybe to provide xetex
>> compatibility) but it's definitely not in luatex (nor will be) and also
>> not in context (which has more advanced color support than hex specs
>> anyway)
>
> That’s correct. The “color” key triggers a custom callback that
> tints every glyph of the defined font. It’s part of Luaotfload
> solely for compatibility
