I\'m using \\deqn{}{} with roxygen2 to document equations for a function in a package. The LaTeX (the 1st argument to deqn) renders fine because white
\\deqn{}{}
deqn
According to Hadley Wickham, line wrapping will be removed in future versions of roxygen. So the solution for roxygen2 is to roxygenize the file (or package), then manually update the text equation in the affected .Rd file(s).
.Rd