Hi Pablo, thanks for the suggestion. Here's the minimal example which shows the difference: \definefontfamily[face][rm][dejavuserif] \starttext\switchtobodyfont[face, 24pt]ɑ\stoptext this should warn: fonts > checking > char ɑ (U+00251) in font 'LatinModernMath-Regular-4' with id 10: missing while \definefontfamily[face][rm][dejavuserif] \starttext\switchtobodyfont[face, 24pt]ɑ\stoptext produces the expected result despite a harmless warning. Sylvain On Sun, 8 Nov 2020 at 10:41, Pablo Rodriguez wrote:

On 11/8/20 2:35 AM, Sylvain Hubert wrote:

...

Dear List,

after hours of debugging, I finally found out that \switchtobodyfont[face, 20pt] does NOT behave the same with \switchtobodyfont[face]\switchtobodyfont[20pt]. In my case the latter is the correct one, while the former does nothing but falling back to latinmodern.

Does anyone know when or why \switchtobodyfont behaves differently with splitted and joined parameters?

Hi Sylvain,

as a general rule, it helps when there is a minimal sample that provides the problematic behavior.

I don’t get diffferent results:

\definefontfamily[mainface][rm][TeX Gyre Pagella] \definefontfamily[face][rm][TeX Gyre Heros] \setupbodyfont[mainface] \startbuffer In my case, the latter is the correct one, while the former does nothing but falling back to latinmodern.\par \stopbuffer

\starttext \getbuffer \switchtobodyfont[face]\switchtobodyfont[20pt] \getbuffer \switchtobodyfont[face, 20pt] \getbuffer \stoptext

Correct the sample to show what I got wrong from your message.

Pablo -- http://www.ousia.tk

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On 11/8/20 11:18 AM, Sylvain Hubert wrote:

Hi Pablo,

thanks for the suggestion. Here's the minimal example which shows the difference:

    \definefontfamily[face][rm][dejavuserif]     \starttext\switchtobodyfont[face, 24pt]ɑ\stoptext

this should warn:

    fonts           > checking > char ɑ (U+00251) in font 'LatinModernMath-Regular-4' with id 10: missing

Well, you are switching before setting up a body font. I don’t know whether this might be a bug in ConTeXt (see previous report), but I would set up the body font always first: \definefontfamily[face][rm][dejavuserif] \definefontfamily[deface][rm][dejavusans] \setupbodyfont[deface] \starttext a\switchtobodyfont[face, 24pt]ɑ\stoptext

while

    \definefontfamily[face][rm][dejavuserif]     \starttext\switchtobodyfont[face, 24pt]ɑ\stoptext

produces the expected result despite a harmless warning.

I guess the command reads: \switchtobodyfont[face]ɑ This might also be related to the issue just reported. Pablo -- http://www.ousia.tk

Sylvain Hubert schrieb am 08.11.2020 um 12:02:

On Sun, 8 Nov 2020 at 11:37, Pablo Rodriguez mailto:oinos@gmx.es> wrote:

On 11/8/20 11:18 AM, Sylvain Hubert wrote: > Hi Pablo, > > thanks for the suggestion. Here's the minimal example which shows the > difference: > >     \definefontfamily[face][rm][dejavuserif] >     \starttext\switchtobodyfont[face, 24pt]ɑ\stoptext > > this should warn: > >     fonts           > checking > char ɑ (U+00251) in font > 'LatinModernMath-Regular-4' with id 10: missing

Well, you are switching before setting up a body font.

I don’t know whether this might be a bug in ConTeXt (see previous report), but I would set up the body font always first:

    \definefontfamily[face][rm][dejavuserif]     \definefontfamily[deface][rm][dejavusans]     \setupbodyfont[deface]     \starttext a\switchtobodyfont[face, 24pt]ɑ\stoptext

Thanks, it works!

And I agree that it probably indicates the existence of a bug, since by changing "\setupbodyfont[deface]" to "\setupbodyfont[dejavu]" in your example, the problem reappears:

    \definefontfamily[face][rm][dejavuserif]

Add here: \definebodyfont[24pt] Wolfgang

On Sun, 8 Nov 2020 at 12:14, Hans Hagen wrote:

when yyou use several bodyfonts you can do this before \starttext:

\usebodyfont[face,24pt] \usebodyfont[deface]

\starttext .... \stoptext

Thank you for the information, Hans! Could you please also shed some light on the relation/difference among \{setup,switchto,use}bodyfont? There seems to be not much documentation on this. Can one conclude, from the wiki https://wiki.contextgarden.net/Command/switchtobodyfont and the source code https://source.contextgarden.net/tex/context/base/mkiv/font-ini.mklx#l2287, that they are mostly the same, except that \switchtobodyfont is restricted to the content area, and \usebodyfont is a helper to call \setupbodyfont in the beginning? If this is the case, is it recommended to always put a \setupbodyfont[...] in the beginning, even if it's just a \setupbodyfont[modern]? One reason might be that the following example somehow enlarges the page number in the header, intuitively contradicting what is claimed by the wiki https://wiki.contextgarden.net/Command/switchtobodyfont: \switchtobodyfont[dejavu] \starttext \switchtobodyfont[dejavu, 24pt]a\stoptext Thanks! Sylvain

On Sun, 8 Nov 2020 at 12:52, Hans Hagen wrote:

On 11/8/2020 12:46 PM, Sylvain Hubert wrote:

...

On Sun, 8 Nov 2020 at 12:14, Hans Hagen mailto:j.hagen@xs4all.nl> wrote:

when yyou use several bodyfonts you can do this before \starttext:

\usebodyfont[face,24pt] \usebodyfont[deface]

\starttext .... \stoptext

Thank you for the information, Hans!

Could you please also shed some light on the relation/difference among \{setup,switchto,use}bodyfont? There seems to be not much documentation on this. Can one conclude, from the wiki https://wiki.contextgarden.net/Command/switchtobodyfont and the source code < https://source.contextgarden.net/tex/context/base/mkiv/font-ini.mklx#l2287>,

...

that they are mostly the same, except that \switchtobodyfont is restricted to the content area, and \usebodyfont is a helper to call \setupbodyfont in the beginning?

If this is the case, is it recommended to always put a \setupbodyfont[...] in the beginning, even if it's just a \setupbodyfont[modern]? One reason might be that the following example somehow enlarges the page number in the header, intuitively contradicting what is claimed by the wiki https://wiki.contextgarden.net/Command/switchtobodyfont:

\switchtobodyfont[dejavu] \starttext \switchtobodyfont[dejavu, 24pt]a\stoptext

\setup is document wide \switch is for local usage

So \switchtobodyfont before \starttext is semantically an error then. Thanks for the confirmation!

(has to do with picking up font/space related issues after page breaks and when typesetting page ornaments like headers and footers)

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Sylvain