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040000 tree aff2a0941680fae7dc5d42a025610fc28498d3d5	basic_string_view
040000 tree 9477d905118c8c02e622ab79f5399e09009102f2	c_strings
040000 tree 2191e5549a88081c39866e284eaa3874490f7c76	char_traits
040000 tree 8de91d38ad25d1b579163b329cb3d3c3480431d2	debug
040000 tree 0f83e78958009a46b0156978d61f2fab9df58ce9	headers