build-reference.md
In pkgdown: Make Static HTML Documentation for a Package

parse failures include file name

Code
  build_reference(pkg)
Output
  -- Building function reference -------------------------------------------------
  Writing 'reference/index.html'
  Reading 'man/f.Rd'
Condition
  Error in `.f()`:
  ! Failed to parse Rd in f.Rd
  i Failed to parse \url{}.
  i Check for empty \url{} tags.
  Caused by error in `stop_bad_tag()`:
  ! Failed to parse \url{}.
  i Check for empty \url{} tags.