[NTG-context] Another bug with ligature-blocking?

denis.maier at ub.unibe.ch denis.maier at ub.unibe.ch
Wed Mar 24 20:20:12 CET 2021


> -----Ursprüngliche Nachricht-----
> Von: Hans Hagen <j.hagen at xs4all.nl>
> Gesendet: Mittwoch, 24. März 2021 17:42
> An: mailing list for ConTeXt users <ntg-context at ntg.nl>; Maier, Denis
> Christian (UB) <denis.maier at ub.unibe.ch>
> Betreff: Re: [NTG-context] Another bug with ligature-blocking?
> 
> On 3/24/2021 4:48 PM, denis.maier at ub.unibe.ch wrote:
> 
> > \definefontfamily[times][rm][Times New Roman]
> don't assume beforehand that something that doesn't work as expected is a
> bug

Sorry, Hans, I didn't mean to be offensive.

> 
> the font just has no ligatures defined which you can remedy (in this
> cae) with because it does have the glyphs
> 
> \startluacode
>      fonts.handlers.otf.addfeature {
>          name = "moreligatures",
>          type = "ligature",
>          data = {
>              ['ff'] = { "f", "f" },
>              ['fi'] = { "f", "i" },
>              ['fl'] = { "f", "l" },
>          }
>      }
> \stopluacode
> 
> 
> \blockligatures[begrif:fl:ich]
> \definefontfeature[default][default][dlig=yes,liga=yes,moreligatures=yes]
> \definefontfamily[times][rm][Times New Roman]
> \definefontfamily[termes[rm][TeX Gyre Termes]
> 
> \definefontfeature[default:block][default][blockligatures=yes]
> 
> \starttext
> 
> {\switchtobodyfont[times] \definedfont[Serif*default]        begrifflich
> ff fi fl\blank
>                            \definedfont[Serif*default:block] begrifflich ff fi fl\blank}
> {\switchtobodyfont[termes]\definedfont[Serif*default]        begrifflich
> ff fi fl\blank
>                            \definedfont[Serif*default:block] begrifflich ff fi fl\blank}
> 
> \stoptext
>

I'm not sure I understand what is going on here. I thought \blockligatures simply means that instead of a ligature you'll have the regular glyphs in the output. Is that not correct?

Denis


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