On 1/18/2016 1:46 PM, Jan U. Hasecke wrote:
Am 18.01.2016 um 11:09 schrieb Hans Hagen:
On 1/18/2016 10:16 AM, Jan U. Hasecke wrote:
Am 17.01.2016 um 20:05 schrieb Hans Hagen:
On 1/16/2016 3:58 PM, Jan U. Hasecke wrote:
Am 16.01.2016 um 13:31 schrieb Schmitz Thomas A.:

Please provide a minimal example of your problem. It’s impossible to
help when we have no clue what you’re doing.

Sorry, of course.

After setting up a mwe I found that it is a font related issue.

When I don't specify a font, it works. --> example.tex

When I choose EB Garamond, it does not work. -- example-Garamond.tex

I confirmed this behaviour in my real setup.

don't assume that ligatures are always real ligatures ... in that font
it's just kerning .. this kind of works okay:

\replaceword[sellig][auflösen][auf{-}{}{\zwnj}lösen]

I am confused as the specimen of EB Garamond mentions (real) ligatures.
They are listed as glyphs.

https://github.com/georgd/EB-Garamond/blob/master/specimen/Specimen.pdf

maybe the archaic st ligature is a precomposed but f f l i aren't done
that way but by either kerning or replacement of individual glyphs +
kerning (there are many methods for this) ... also, 'liga' might mean
ligature but in practice is used for all kind of things ... in opentype
'ligature substitution' is just a many-to-one replacement but that
doesn't mean that 'liga' uses that ... welcome to the inconsistent open
type mess


Mh, yes. :-(

Two additional questions. Shall I file a bugreport for this issue? What
would be the right words: please provide real ligature glyphs instead of
composed ones?

there are many fonts out that that do similar things replacing f an i by different shapes, or overlaying, or kerning, or replacing by one char, looking forward (from f to i) or backward (from i to f) ... as all is technically possible/permitted nothing is a bug (but there might be occasional differences between hyphenation although quite some effort went into getting that kind of right ... and it makes a good topic for complex hard to follow boring presentations (see attachment)

(btw, sometimes glyphs get funny non standard names in which case roundtrip copy/paste becomes a mess)

EB Garamond is a free font also in the sense free of charge. But what
can I expect when I buy a commercial font? I would be quite annoyed when
I buy a font which does not provide the features in a way that I can use
them in ConTeXt.

you can expect the same ... in fact you can also expect type1 -> otf converted fonts with hardly any use of opentype features

Is there a font quality page on the Wiki with a feature comparison?

that would be nice (has been discussed)

Hans

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Attachment: ligatures.pdf
Description: Adobe PDF document

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