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diff --git a/tmac/tests/andoc_P-register-works.sh b/tmac/tests/andoc_P-register-works.sh
new file mode 100755
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+++ b/tmac/tests/andoc_P-register-works.sh
@@ -0,0 +1,117 @@
+#!/bin/sh
+#
+# Copyright (C) 2022 Free Software Foundation, Inc.
+#
+# This file is part of groff.
+#
+# groff is free software; you can redistribute it and/or modify it under
+# the terms of the GNU General Public License as published by the Free
+# Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# groff is distributed in the hope that it will be useful, but WITHOUT
+# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+# FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+# for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program. If not, see <http://www.gnu.org/licenses/>.
+#
+
+groff="${abs_top_builddir:-.}/test-groff"
+
+fail=
+
+wail () {
+    echo "...FAILED" >&2
+    fail=YES
+}
+
+# Test going back and forth from man(7) to mdoc(7).
+
+input='.TH foo 1 2022-12-11 "groff test suite"
+.SH Name
+foo \- frobinicate a bar
+.bp
+.SH Description
+It took a while to get here.
+.Dd 2022-12-11
+.Dt bar 1
+.Os "groff test suite"
+.Sh Name
+.Nm bar
+.Nd erect something for people to walk into
+.bp
+.Sh Description
+It took a while to get here.
+.TH baz 7 2022-12-11 "groff test suite"
+.SH Name
+baz \- what they do not play at Mos Eisley spaceport cantina
+.bp
+.SH Description
+It took a while to get here.'
+
+# First, check without continuous numbering.  Each page starts at P.
+
+output=$(printf "%s\n" "$input" | "$groff" -rcR=0 -rP13 -mandoc \
+    -Tascii -P-cbou)
+echo "$output"
+
+echo "checking first document, first page footer (discontinuous)" >&2
+echo "$output" | grep -En "^groff test suite +2022-12-11 +13$" \
+    | grep '^64:' || wail
+
+echo "checking first document, second page footer (discontinuous)" >&2
+echo "$output" | grep -En "^groff test suite +2022-12-11 +14$" \
+    | grep '^130:' || wail
+
+echo "checking second document, first page footer (discontinuous)" >&2
+echo "$output" | grep -En "^groff test suite +2022-12-11 +13$" \
+    | grep '^196:' || wail
+
+echo "checking second document, second page footer (discontinuous)" >&2
+echo "$output" | grep -En "^groff test suite +2022-12-11 +14$" \
+    | grep '^262:' || wail
+
+echo "checking third document, first page footer (discontinuous)" >&2
+echo "$output" | grep -En "^groff test suite +2022-12-11 +13$" \
+    | grep '^328:' || wail
+
+echo "checking third document, second page footer (discontinuous)" >&2
+echo "$output" | grep -En "^groff test suite +2022-12-11 +14$" \
+    | grep '^394:' || wail
+
+# Now, check _with_ continuous numbering.  Only the first page is
+# numbered P.
+
+output=$(printf "%s\n" "$input" | "$groff" -rcR=0 -rC1 -rP13 -mandoc \
+    -Tascii -P-cbou)
+echo "$output"
+
+echo "checking first document, first page footer (continuous)" >&2
+echo "$output" | grep -En "^groff test suite +2022-12-11 +13$" \
+    | grep '^64:' || wail
+
+echo "checking first document, second page footer (continuous)" >&2
+echo "$output" | grep -En "^groff test suite +2022-12-11 +14$" \
+    | grep '^130:' || wail
+
+echo "checking second document, first page footer (continuous)" >&2
+echo "$output" | grep -En "^groff test suite +2022-12-11 +15$" \
+    | grep '^196:' || wail
+
+echo "checking second document, second page footer (continuous)" >&2
+echo "$output" | grep -En "^groff test suite +2022-12-11 +16$" \
+    | grep '^262:' || wail
+
+echo "checking third document, first page footer (continuous)" >&2
+echo "$output" | grep -En "^groff test suite +2022-12-11 +17$" \
+    | grep '^328:' || wail
+
+echo "checking third document, second page footer (continuous)" >&2
+echo "$output" | grep -En "^groff test suite +2022-12-11 +18$" \
+    | grep '^394:' || wail
+
+test -z "$fail"
+
+# vim:set ai et sw=4 ts=4 tw=72: