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diff --git a/tmac/tests/doc_indents-correctly.sh b/tmac/tests/doc_indents-correctly.sh
new file mode 100755
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+++ b/tmac/tests/doc_indents-correctly.sh
@@ -0,0 +1,89 @@
+#!/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="${abs_top_builddir:-.}/test-groff"
+
+# Regression-test Debian #1022179.
+#
+# Ensure that subsection headings are indent correctly even if they
+# break across output lines.
+
+input='.Dd 2022-10-28
+.Dt foo 1
+.Os
+.Sh "A long section heading that wraps to illustrate the fact that the\
+ indentation of said title is consistent even if it breaks across lines"
+Discussion should be indented as ordinary paragraph.
+.Ss "A long subsection heading that wraps to illustrate the fact that\
+ the indentation of said title is consistent even if it breaks across\
+ lines"
+Further discussion should be indented as ordinary paragraph.'
+
+output=$(printf "%s\n" "$input" | "$groff" -Tascii -P-cbou -mdoc)
+fail=
+
+# Verify that default `Sh` indentation is zero.
+if ! echo "$output" | grep -Eq '^A +long +section +heading'
+then
+    fail=yes
+    echo "default 'Sh' indentation check failed on 1st line" >&2
+fi
+
+if ! echo "$output" | grep -Eq '^of said title is consistent'
+then
+    fail=yes
+    echo "default 'Sh' indentation check failed on 2nd line" >&2
+fi
+
+# Verify that paragraph indentation after section heading is correct.
+# 7 spaces in string literal.
+if ! echo "$output" | grep -Eq '^       Discussion should be indented'
+then
+    fail=yes
+    echo "'Pp' indentation after 'Sh' check failed" >&2
+fi
+
+# Verify that default `Ss` indentation is three ens.
+# 3 spaces in string literal.
+if ! echo "$output" | grep -Eq '^   A +long +subsection +heading'
+then
+    fail=yes
+    echo "default 'Ss' indentation check failed on 1st line" >&2
+fi
+
+# 3 spaces in string literal.
+if ! echo "$output" | grep -Eq '^   indentation of said title is'
+then
+    fail=yes
+    echo "default 'Ss' indentation check failed on 2nd line" >&2
+fi
+
+# Verify that paragraph indentation after subsection heading is correct.
+# 7 spaces in string literal.
+if ! echo "$output" | grep -Eq '^       Further discussion should be'
+then
+    fail=yes
+    echo "'Pp' indentation after 'Ss' check failed" >&2
+fi
+
+test -z "$fail"
+exit
+
+# vim:set ai et sw=4 ts=4 tw=72: