buffer_for_file
auto in = input_buffer::buffer_for_file(fn);
auto in = input_buffer::buffer_for_file(fn);
auto include_buffer = input_buffer::buffer_for_file(include_file, false);
include_buffer = input_buffer::buffer_for_file(include_file, false);
auto include_buffer = input_buffer::buffer_for_file(include_file, false);
include_buffer = input_buffer::buffer_for_file(include_file, false);
static std::unique_ptr<input_buffer> buffer_for_file(const std::string &path,