bash-5.1 distribution sources and documentation

tests/herestr.tests

@@ -1,3 +1,36 @@
+#   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/>.
+#
+# basics
+read x <<<"alpha"
+echo "$x"
+read x <<<beta
+echo "$x"
+X=4
+read x <<<$X
+echo "$x"
+read x <<<"$X"
+echo "$x"
+unset X
+
+# empty here-strings
+read x <<<""
+echo "$x"
+read x <<<"$empty"
+echo "$x"
+read x <<<$empty
+echo "$x"
+
 a=hot
 b=damn
 f1()