.BR sprintf (3)
because the former has to do most of its work itself. In particular,
.B dstr_putf
-doesn't (and probably never will) understand the
+understands the POSIX
.RB ` n$ '
-positional parameter notation accepted by many Unix C libraries. There
-is no macro equivalent of
+positional parameter notation accepted by many Unix C libraries, even if
+the underlying C library does not. There is no macro equivalent of
.BR dstr_putf .
.PP
The function