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diff --git a/tmac/tests/s_IP-indents-using-paragraph-type-size.sh b/tmac/tests/s_IP-indents-using-paragraph-type-size.sh
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+#!/bin/sh
+#
+# Copyright (C) 2021 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="${abs_top_builddir:-.}/test-groff"
+export GROFF_TYPESETTER=
+
+# Regression-test Savannah #59604.
+#
+# Ensure that the indentation amount used by IP is based on the type
+# size of the _paragraph_, not a preceding heading (which might have
+# been affected by GROWPS).
+
+EXAMPLE=\
+'.nr PSINCR 3p
+.nr GROWPS 3
+.SH 1
+Text
+.IP 1. 4
+Filling
+.IP 2. 4
+Sentences'
+
+OUTPUT=$(echo "$EXAMPLE" | "$groff" -ms -Z \
+ | sed -n '/^H92000$/{
+ N
+ /\ntFilling$/{
+ p
+ b
+ }
+ }')
+test -n "$OUTPUT"
+
+# vim:set ai et sw=4 ts=4 tw=72: