Re: Math prime issues for some fonts

[Mikael Sundqvist via ntg-context <ntg-context@ntg.nl>]

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Hi Jack,

I've been working with Hans on math in general and primes in
particular in the last week. I do not understand all the details, but
I think primes are handled differently now, and that one essentially
need to have some tuning in goodie files (the reason is that they are
done differently in different fonts, and that there was not simple
one-fits-all solution). We have not touched eulernova yet.

In any case, if you replace euler-math.lfg and type-imp-euler.mkiv in
ConTeXt-lmtx/tex/texmf-context/tex/context/fonts/mkiv/ with the
attached files, I think at least the primes should look OK (you could
experiment with the values in euler-math.lfg). The sample file

\setupbodyfont[eulernova]

\starttext
\m{x'(t)f'(x)f''(x)e^{f'(x)}}
\stoptext

looks OK here.

/Mikael

On Fri, Nov 26, 2021 at 7:54 PM Jack Hill via ntg-context
<ntg-context@ntg.nl> wrote:
>
> On Fri, 26 Nov 2021 at 17:39, Wolfgang Schuster
> <wolfgang.schuster.lists@gmail.com> wrote:
> >
> > Jack Hill via ntg-context schrieb am 26.11.2021 um 18:18:
> > > Hi list,
> > >
> > > When I run this test code
> > >
> > > \definefontfamily[trm][math][tex gyre termes math]
> > > \definefontfamily[pag][math][tex gyre pagella math]
> > > \definefontfamily[bon][math][tex gyre bonum math]
> > > \definefontfamily[sch][math][tex gyre schola math]
> > > \definefontfamily[stx][math][stix two math]
> > > \starttext
> > > \starttabulate[|c|c|]
> > > \FL
> > > \NC \bf Font name \NC \bf Math prime \NR
> > > \ML
> > > \NC Latin modern \NC \m{x'} \NR
> > > \NC Termes \NC \switchtobodyfont[trm] \m{x'} \NR
> > > \NC Pagella \NC \switchtobodyfont[pag] \m{x'} \NR
> > > \NC Bonum \NC \switchtobodyfont[bon] \m{x'} \NR
> > > \NC Schola \NC \switchtobodyfont[sch] \m{x'} \NR
> > > \NC Stix \NC \switchtobodyfont[stx] \m{x'} \NR
> > > \BL
> > > \stoptabulate
> > > \stoptext
> > >
> > > on my machine, the prime symbols are being placed too high (except for
> > > latin modern which is normal).
> > > Running the same code on the wiki gives the correct output though.
> > > Does anyone else get the same output? Screenshot attached.
> >
> > Use \definetypeface to load/set the math fonts.
> >
> > \starttext
> >
> > \starttabulate[|l|c|]
> > \FL
> > \BC Font name          \BC Math prime                        \NC\NR
> > \ML
> > \NC Latin Modern Roman \NC                            \m{x'} \NC\NR
> > \NC TeX Gyre Termes    \NC \switchtobodyfont[termes]  \m{x'} \NC\NR
> > \NC TeX Gyre Pagella   \NC \switchtobodyfont[pagella] \m{x'} \NC\NR
> > \NC TeX Gyre Bonum     \NC \switchtobodyfont[bonum]   \m{x'} \NC\NR
> > \NC TeX Gyre Schola    \NC \switchtobodyfont[schola]  \m{x'} \NC\NR
> > \NC STIX Two           \NC \switchtobodyfont[stixtwo] \m{x'} \NC\NR
> > \BL
> > \stoptabulate
> >
> > \stoptext
> >
> > Wolfgang
>
> Thanks, \definetypeface fixes it. Should I not be using \definefontfamily?
> I've just checked eulernova and the prime is still too high for this font.
>
> \switchtobodyfont[eulernova]
> \starttext
> \m{x'}
> \stoptext
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[-- Attachment #2: euler-math.lfg --]
[-- Type: application/octet-stream, Size: 566 bytes --]

-- this file might go away and is for experiments only

return {
    name = "euler-math",
    version = "1.00",
    comment = "Goodies that complement euler math.",
    author = "Hans Hagen",
    copyright = "ConTeXt development team",

   mathematics = {
        tweaks = {
            aftercopying = {
                {
                    tweak   = "fixprimes",
                    factor  = 0.9,
                    smaller = true,
                    scale   = 0.60,
                    fake    = 0.75,
                },
            },
        },
    },


}



[-- Attachment #3: type-imp-euler.mkiv --]
[-- Type: application/octet-stream, Size: 4467 bytes --]

%D \module
%D   [       file=type-otf,
%D        version=2007.07.30,
%D          title=\CONTEXT\ Typescript Macros,
%D       subtitle=Euler,
%D         author=Hans Hagen,
%D           date=\currentdate,
%D      copyright={PRAGMA ADE \& \CONTEXT\ Development Team}]
%C
%C This module is part of the \CONTEXT\ macro||package and is
%C therefore copyrighted by \PRAGMA. See mreadme.pdf for
%C details.

\loadtypescriptfile[texgyre]
\loadtypescriptfile[dejavu]

% U+0000 upto U+3100 is probably ok, but even then we don't want a mix of accented

\resetfontfallback  [euleroverpagella]
\resetfontfallback  [pagellaovereuler]

% 0x1D455 : italic h

\definefontfallback [euleroverpagella] [\s!file:euler.otf]   [0x02100-0x02BFF] [\s!check=yes,\c!force=yes]
\definefontfallback [euleroverpagella] [\s!file:euler.otf]   [0x1D400-0x1D7FF] [\s!check=yes,\c!force=yes]
\definefontfallback [euleroverpagella] [texgyrepagella-math] [0x0210E]         [\s!check=yes,\c!force=\v!yes]
%definefontfallback [euleroverpagella] [\s!file:euler.otf]   [0x1D538-0x1D550] [\s!check=yes,\c!force=yes]

\definefontfallback [pagellaovereuler] [texgyrepagella-math] [0x02100-0x02BFF] [\s!check=yes]
\definefontfallback [pagellaovereuler] [texgyrepagella-math] [0x1D400-0x1D7FF] [\s!check=yes]
\definefontfallback [pagellaovereuler] [texgyrepagella-math] [0x1D400-0x1D7FF] [\s!check=yes]
\definefontfallback [pagellaovereuler] [texgyrepagella-math] [0x0210E]         [\s!check=yes,\c!force=\v!yes]
%definefontfallback [pagellaovereuler] [texgyrepagella-math] [0x1D538-0x1D550] [\s!check=yes]

% example for aditya:

% \definefontfallback [pagellaovereuler] [texgyrepagella-math] [lowercasenormal] [offset=uppercasenormal,force=yes]
% \definefontfallback [pagellaovereuler] [texgyrepagella-math] [uppercasenormal] [offset=lowercasenormal,force=yes]

% \definefontfallback [pagellaovereuler] [texgyrepagella-math] [uppercasebolditalic] [force=yes]
% \definefontfallback [pagellaovereuler] [texgyrepagella-math] [lowercasebolditalic] [force=yes]

\starttypescriptcollection[pagella-eulernova]

    \starttypescript [\s!serif] [eulernova] [\s!name]
        \setups[\s!font:\s!fallback:\s!serif]
        \definefontsynonym [\s!Serif] [\s!file:euler.otf] [\s!features=\s!default]
    \stoptypescript

    \starttypescript [\s!math] [eulernova] [\s!name]
      % \loadfontgoodies[euler-math]
        \definefontsynonym [MathRoman] [\s!file:euler.otf] [\s!features={\s!math\mathsizesuffix,mathextra},\s!goodies=euler-math]
    \stoptypescript

    \starttypescript [pagella-eulernova]
        \definetypeface [\typescriptone] [\s!rm] [\s!serif] [pagella]   [\s!default]
        \definetypeface [\typescriptone] [\s!tt] [\s!mono]  [dejavu]    [\s!default] [\s!rscale=0.9]
        \definetypeface [\typescriptone] [\s!mm] [\s!math]  [eulernova] [\s!default]
        \quittypescriptscanning
    \stoptypescript

    \starttypescript [eulernova]
        \definetypeface [\typescriptone] [\s!rm] [\s!serif] [eulernova] [\s!default]
        \definetypeface [\typescriptone] [\s!tt] [\s!mono]  [dejavu]    [\s!default] [\s!rscale=0.9]
        \definetypeface [\typescriptone] [\s!mm] [\s!math]  [eulernova] [\s!default]
        \quittypescriptscanning
    \stoptypescript

    \starttypescript [\s!math] [euleroverpagella] [\s!name]
        \definefontsynonym [MathRoman] [texgyrepagella-math] [\s!features={\s!math\mathsizesuffix,mathextra},\s!fallbacks=euleroverpagella]
    \stoptypescript

    \starttypescript [\s!math] [pagellaovereuler] [\s!name]
        \definefontsynonym [MathRoman] [\s!file:euler.otf] [\s!features={\s!math\mathsizesuffix,mathextra},\s!fallbacks=pagellaovereuler]
    \stoptypescript

    \starttypescript [pagella-with-euler]
        \definetypeface [\typescriptone] [\s!rm] [\s!serif] [pagella]          [\s!default]
        \definetypeface [\typescriptone] [\s!tt] [\s!mono]  [dejavu]           [\s!default] [\s!rscale=0.9]
        \definetypeface [\typescriptone] [\s!mm] [\s!math]  [euleroverpagella] [\s!default]
        \quittypescriptscanning
    \stoptypescript

    \starttypescript [euler-with-pagella]
        \definetypeface [\typescriptone] [\s!rm] [\s!serif] [eulernova]        [\s!default]
        \definetypeface [\typescriptone] [\s!tt] [\s!mono]  [dejavu]           [\s!default] [\s!rscale=0.9]
        \definetypeface [\typescriptone] [\s!mm] [\s!math]  [pagellaovereuler] [\s!default]
        \quittypescriptscanning
    \stoptypescript

\stoptypescriptcollection

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