Which are the key questions one has to ask to decide between Polyglossia and Babel for a LuaLaTeX project in 2019?
There has been a similar, more general question in 2012, but the packages have changed a lot in the meantime. Hence I open a new, more specific question.
Can we reduce it to a check list like
Use package A, if you need
- utf-8 characters
- right to left support
Use package B, if you need
- package foo, because A breaks foo