I want to write the following line (Ovid, Metamorphoses, X.30) with its metric peculiarity :
per Chaos hoc ingēns uāstīque silentia rēgnī
(something like : By this huge void and these vast and silent realms...)
It's a dactylic hexameter with the "hoc" being treated as a long syllable (for another example, confer this line in Eneid 2.664 : Hoc erat, alma parens...)
- u u - - - - - u u - uu - - per Chaos hoc ingēns uāstīque silentia rēgnī
My question is : how can I show that "hoc" is treated as a long syllable ? I don't want to use a macron ("hōc") since the vowel is short (hoc < hodce; the word being read "hocc"). I can't use some wordprocessor or CSS tricks : I have to use pure Unicode output. I thought to the synizesis symbol (something like ho͡c) but this Latin word had nothing to do with a synizesis !
Any better idea ?