include "include_empty_file"

# (include (@ 1 0-7) ‘.../test-files/mds-kbdc/process-includes/valid/include_empty_file’
#   (.inner
#     (include (@ 1 0-7) ‘.../test-files/mds-kbdc/process-includes/valid/_empty’
#       (.inner nil)
#     )
#   )
# )
# .../test-files/mds-kbdc/process-includes/valid/_empty: warning: file is empty
# 
# .../test-files/mds-kbdc/process-includes/valid/include_include_empty_file:1:0–7: note: included from here
#  include "include_empty_file"
#  ^^^^^^^
# .../test-files/mds-kbdc/process-includes/valid/include_empty_file:1:0–7: note: included from here
#  include "_empty"
#  ^^^^^^^