On 17 Sep 2014, at 10:03, Pablo Rodriguez <oinos@gmx.es> wrote:

> I found a bug in a Greek edition of the Hippocratic oath I’m trying to
> typeset. Last line from the first page
> http://www.ousia.tk/hippocratic-oath.pdf.
> 
> Hyphenation points for this word are: κοι[-||]νώ[-||]σε[-||]σθαι.
> 
> Sorry, but I think that the bug is clear, but I don’t know how to
> provide a minimal sample.
> 
> Many thanks for your help,

Why is it difficult to provide a minimal example? I have this:

\definepapersize [test] [width=5.7in,height=4in]

\setuppapersize [test] [test]

\mainlanguage [agr]

\definefontfamily [test] [serif] [Free Serif]

\setupbodyfont [test,12pt]

\starttext

\strut \hskip1em Ἀπόλλωνα ἰητρὸν καὶ Ἀσκληπιὸν, καὶ Ὑγείαν καὶ Πανάκειαν
καὶ θεοὺς πάντας τε καὶ πάσας, ἵστορας ποιεύμενος, ἐπιτελέα ποιήσειν κατὰ
δύναμιν καὶ κρίσιν ἐμὴν ὅρκον τόνδε καὶ συγγραφὴν τήνδε· ἡγήσεσθαι μὲν τὸν
διδάξαντά με τὴν τέχνην ταύτην ἴσα γενέτῃσιν ἐμοῖσι, καὶ βίου κοινώσεσθαι

\stoptext

Which gives me the attached output - with the expected hyphenation. So this is not a bug, but something is wrong in your document. And we won’t be able to say what unless you provide a minimal example.

Thomas