It appears Richard Levitte succumbed to everything-needs-a-callback-paranoia
in 2004, but nobody is going to be surprised that nothing whatsoever wants
to use this particular callback, according to codesearch.debian.net.
-.\" $OpenBSD: BIO_dump.3,v 1.3 2022/01/15 23:38:50 jsg Exp $
+.\" $OpenBSD: BIO_dump.3,v 1.4 2022/12/20 15:34:03 schwarze Exp $
.\"
.\" Copyright (c) 2021 Ingo Schwarze <schwarze@openbsd.org>
.\"
.\" ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
.\" OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
.\"
-.Dd $Mdocdate: January 15 2022 $
+.Dd $Mdocdate: December 20 2022 $
.Dt BIO_DUMP 3
.Os
.Sh NAME
.Nm BIO_dump_indent ,
.Nm BIO_dump_fp ,
.Nm BIO_dump_indent_fp
+.\" intentionally undocumented because nothing uses these two functions:
+.\" .Nm BIO_dump_cb
+.\" .Nm BIO_dump_indent_cb
.Nd hexadecimal printout of arbitrary byte arrays
.Sh SYNOPSIS
.In openssl/bio.h