Thanks for the answer. Yes acute works. But where do you see the difference? I am looking the dialogs of fontforge and can not locate the difference.
I have more trouble with diacritics stacking especially when stacking above AND below. x́ (x+ U+0301) works x̖ (x + U+0316) works as well, but x̖́ (x+ U+0301 + U+0316) fails. I have been trying to resolve these issues for a long time but without luck. The fontforge dialogs show correct stacking but xetex does not stack as expected an I have routinely failed to find the reasons. So at which dialogs do you see the difference between U+0301 and U+0300 ? And why simultaneous stack above and below fails? Thanks for your help, Antonis. On 10/23/21 6:26 PM, Jonathan Kew wrote: > On 23/10/2021 14:37, Antonis Tsolomitis wrote: >> >> It is a long time now that NewComputerModern has build-in information >> for diacritics stacking. >> I have heard that xetex supports this but I can not make it work. >> The font is developed >> with fontforge and as you can see in the attached screenshot, >> fontforge shows stacking working. >> >> However xelatex just places, say the grave (uni0300) next and not >> above the character, say uni2C9B >> (as in screenshot). >> >> So I guess I have something wrong in the font that xetex does not >> like(?) > > > Do any other diacritics such as the acute (U+0301) or dieresis > (U+0308) work? From a quick look at the GPOS table in the font -- if > I'm reading it correctly -- it appears that uni0300 may have the wrong > attachment point class (whereas in uni0301 and uni0308, it looks > correct). > > JK > > > >> >> The font currently develops the coptic block for academic needs this >> is why I use uni2C9B. >> >> A sample file is >> >> \documentclass{article} >> \usepackage{fontspec} >> \setmainfont{NewCM10-Regular.otf} >> \begin{document} >> ⲛ̀ >> \end{document} >> >> However the font that contains this character (since it is under >> development) is here: >> https://myria.math.aegean.gr/~atsol/tmp/NewCM10-Regular.sfd >> <https://myria.math.aegean.gr/~atsol/tmp/NewCM10-Regular.sfd> >> https://myria.math.aegean.gr/~atsol/tmp/NewCM10-Regular.otf >> <https://myria.math.aegean.gr/~atsol/tmp/NewCM10-Regular.otf> >> >> thanks for any help, >> >> Antonis. >> >