Package: groff-base
Version: 1.23.0-7
Severity: important
File: /usr/share/groff/1.23.0/tmac/doc.tmac

Dear Maintainer,

Observe the Nms in
https://ra.ws.co.ls/~nabijaczleweli/tzpfms/blob/f2bb78cd74ba4237cc1036ef9825d448963b51a4/tzpfms.pdf
(as built with groff -K utf8 -tpe -mdoc -Tps -dpaper=a4 -P-pa4 under groff 1.23.0-7).

Every document after the first one uses the first document's .Nm
(except for ".Nm explicit text" usage, which works as-expected).

This is a regression definitely from 1.22 and probably BSD -mdoc.

Funnily enough, man(1)/groff -Tutf8 work correctly,
so this somehow only affects typesetter modes.

Repro with
-- >8 --
.Dd March 11, 2024
.Dt ZFS-FIDO2-ADD-BACKUP 8
.Os fzifdso 0.4.1
.
.Sh NAME
.Nm zfs-fido2-add-backup
.Nd allow another FIDO2 device to unlock ZFS dataset
.Sh SYNOPSIS
.Nm
.Ar dataset
.
.Sh DESCRIPTION
document 1:
.Nm
.
.Dd December 4, 2022
.Dt ZFS-TPM-LIST 8
.Os tzpfms 0.4.1-1-gfd16dbb
.
.Sh NAME
.Nm zfs-tpm-list
.Nd print dataset tzpfms metadata
.Sh SYNOPSIS
.Nm
.Op Fl H
.Op Fl r Ns \&| Ns Fl d Ar depth
.Op Fl a Ns \&| Ns Fl b Ar back-end
.Op Fl u Ns \&| Ns Fl l
.Oo Ar filesystem Ns \&| Ns Ar volume Oc Ns …
.
.Sh DESCRIPTION
document 2:
.Nm
-- >8 --

-- System Information:
Debian Release: trixie/sid
APT prefers unstable
APT policy: (500, 'unstable')
Architecture: x32 (x86_64)
Foreign Architectures: amd64, i386

Kernel: Linux 6.7.7-amd64 (SMP w/2 CPU threads; PREEMPT)
Kernel taint flags: TAINT_PROPRIETARY_MODULE, TAINT_FORCED_MODULE, TAINT_OOT_MODULE, TAINT_UNSIGNED_MODULE
Locale: LANG=en_GB.UTF-8, LC_CTYPE=en_GB.UTF-8 (charmap=UTF-8), LANGUAGE not set
Shell: /bin/sh linked to /usr/bin/dash
Init: systemd (via /run/systemd/system)
LSM: AppArmor: enabled

Versions of packages groff-base depends on:
ii libc6 2.40-6
ii libgcc-s1 14.2.0-14
ii libstdc++6 14.2.0-14
ii libuchardet0 0.0.8-1+b1

groff-base recommends no packages.

Versions of packages groff-base suggests:
ii groff 1.23.0-7

-- no debconf information

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--- SoupGate-Win32 v1.05
* Origin: fsxNet Usenet Gateway (21:1/5)

By applying "/Sh Name/i.ds doc-topic-name" to the input to explicitly
clear what should've been, I've managed to work around this.
But, it should just work instead.

I see
. ds doc-topic-name \" empty
in .de doc-end-macro and then
.\" NS Dd user macro (not parsed, not callable)
.\" NS set document date
.\" NS
.\" NS modifies:
.\" NS doc-date-string
.\" NS
.\" NS width register 'Dd' set above
.
.eo
.de Dd
. \" If batch processing (rendering multiple) man page documents, we
. \" must handle the end of a previous document.
. \"
. \" If also continuously rendering, cause a page transition to a new
. \" mdoc(7) document.
. if \n[doc-need-titles-reset] \{\
. if \n[cR] .doc-end-macro
.
. \" Clear the page header trap so it is not sprung with stale
. \" information.
. ch doc-header
. doc-break-page-with-new-number
. \}
. if \n[C] .rr P
.
. if !\n[.$] \
. tm mdoc warning: .Dd directive expects an argument (#\n[.c])
. if \n[.$] \{\
. ie "\$1"$Mdocdate:" .ds doc-date-string \$2\~\$3, \$4\"
. el .ds doc-date-string \$*\"
. \}
..
.ec
where doc-need-titles-reset is =0 on init, becomes =1 in .Os,
and doesn't appear to be cleared anywhere?
No clue what's up with that.

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--- SoupGate-Win32 v1.05
* Origin: fsxNet Usenet Gateway (21:1/5)