Internal_for_test (octez-tar-helpers.Octez_tar_helpers.Internal_for

val append_raw_member : 
  file:string ->
  member_name:string ->
  data:string ->
  unit Lwt.t

append_raw_member ~file ~member_name ~data appends a new member to the uncompressed tar archive at file, overwriting the EOF zero-blocks and rewriting them after the entry. The member_name is NOT validated against member_name_is_safe — this function is intended exclusively for tests that need to append archive members with non-canonical names in order to verify that the import layer rejects them.