:: [String] -> String package:MissingH

Form a path from path components. This isn't the inverse of slice_path, since unslice_path . slice_path normalises the path. See slice_path.
Form file name from file name components, interspersing dots. This is the inverse of slice_filename, except for normalisation of any path.
unslice_filename = concat . intersperse "."
See slice_filename.