Compatibility of rsplit (keep -> keepempty)

See also JuliaLang/julia#26647

Author: jipolanco

src/WriteVTK.jl

@@ -23,6 +23,14 @@ using Compat.Printf
 using Compat.Base64
 using Compat: Nothing, undef
 
+@static if VERSION < v"0.7.0-DEV.4724"
+    # https://github.com/JuliaLang/julia/pull/26647
+    rsplit(s::AbstractString; limit::Integer=0, keepempty::Bool=false) =
+        Base.rsplit(s; limit=limit, keep=keepempty)
+    rsplit(s::AbstractString, dlm; limit::Integer=0, keepempty::Bool=false) =
+        Base.rsplit(s, dlm; limit=limit, keep=keepempty)
+end
+
 import Base: close, isopen
 
 # Cell type definitions as in vtkCellType.h

src/gridtypes/common.jl

@@ -270,9 +270,7 @@ function save_with_appended_data(vtk::DatasetFile)
     @assert vtk.appended
 
     # Convert XML document to a string, and split the last two lines.
-    # TODO julia 0.7: "keep" is deprecated, use "keepempty" instead
-    # (https://github.com/JuliaLang/julia/pull/26647)
-    lines = rsplit(string(vtk.xdoc), '\n', limit=3, keep=true)
+    lines = rsplit(string(vtk.xdoc), '\n', limit=3, keepempty=true)
 
     # Verify that the last two lines are what they're supposed to be.
     @assert lines[2] == "</VTKFile>"