fixes for read builtin with backslash escapes; change history builtin behavior when HISTFILE is unset or null; change to compopt to make it use the name from the actual compspec it uses; fix for executing coproc in functions; fix for array variables and declare -g

tests/array32.sub

@@ -1,3 +1,16 @@
+#   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/>.
+#
 # change behavior of shell builtins to extend assoc_expand_once to indexed
 # arrays
 
@@ -83,4 +96,3 @@ a=( [$subscript]=hi )
 declare -p a
 
 unset -v a
-