\starttypescriptcollection[keteryg]

\starttypescript[serif][keteryg]

\definefontsynonym[Serif][file:../fonts/KeterYG/KeterYG-Medium.ttf][features=hebrew] % all the necessary Hebrew features, including dlig

\stoptypescript

\starttypescript[keteryg]

\definetypeface[keteryg][rm][serif][keteryg][default]

\stoptypescript

\stoptypescriptcollection

%Set up the main font:

\setupbodyfont[keteryg]

%Set up right-to-left alignment:

\setupalign[r2l]

%Explicitly add dlig (in case it wasn't there already):

\definefontfeature[plus-dlig][dlig=yes]

\starttext

\addff{plus-dlig}

שֹׂבַע

עָשׂוֹר

קֹשֶׁט

שֹׁשַׁנִּים

עָשׂוֹר

מֹשֶׁה

שַׁלֹשׁ

\stoptext ``` In examples 1, 3, 4, and 6, the holam of the preceding letter (which should have been stripped in the contextual substitution) just seems to have been moved farther up. In fact, the output looks like it would look if I turned off the reordercombining feature. (And indeed, if I manually reorder the glyphs to the Hebrew Layout Intelligence order, then the results look like they did when I just used the "hebrew" feature.)

I may have forgotten to attach the font file I was using for this test. If that is the case, it is available at https://github.com/jjmccollum/Keter-YG.

Joey