GNULIB_VFPRINTF  1513 maint/gnulib/lib/stdio.in.h #if @GNULIB_VFPRINTF_POSIX@ || @GNULIB_VFPRINTF@
GNULIB_VFPRINTF  1515 maint/gnulib/lib/stdio.in.h      || (@GNULIB_VFPRINTF@ && @REPLACE_STDIO_WRITE_FUNCS@ && (@GNULIB_STDIO_H_NONBLOCKING@ || @GNULIB_STDIO_H_SIGPIPE@))