1 files changed, 43 insertions, 0 deletions
diff --git a/lib/check-regexprops.sh b/lib/check-regexprops.sh
new file mode 100755
index 0000000..805c151
--- /dev/null
+++ b/lib/check-regexprops.sh
@@ -0,0 +1,43 @@
+#! /bin/sh
+# Generate regexprops.texi and compare it against the checked-in version.
+#
+# Copyright (C) 2009-2015 Free Software Foundation, Inc.
+#
+# This program 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.
+#
+# This program 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/>.
+existing=${srcdir}/../doc/regexprops.texi
+
+case ${REGEXPROPS} in
+    /*) ;;
+    *) REGEXPROPS="./${REGEXPROPS}"
+esac
+
+save_output="regexprops.texi.new"
+
+rv=1
+if output_file=`mktemp ${TMPDIR:-/tmp}/check-regexprops.XXXXXX`
+then
+    ${REGEXPROPS} "Regular Expressions" findutils |
+    sed -e 's/[     ][      ]*$//' >| "${output_file}"
+    if cmp "${existing}" "${output_file}" ; then
+	echo "${existing} is up to date."
+	rv=0
+    else
+	echo "${existing} is out of date." >&2
+	cp "${output_file}" "${save_output}" &&
+	  echo "Updated output is saved in ${save_output}" >&2
+	rv=1
+    fi
+    rm -f "${output_file}"
+fi
+exit "$rv"