fmt.go (3 lines):
	- line 47: // TODO: this is not entirely correct. The error value could be
	- line 63: // TODO: don't repeat the wrapped error's message when %w occurs in the middle.
	- line 100: // TODO: handle "%[N]w".


wrap.go (1 line):
	- line 63: // TODO: consider supporing target.Is(err). This would allow