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/array33.sub

@@ -0,0 +1,47 @@
+#   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/>.
+#
+
+# implicit and explicit variable type conversions
+
+declare -A A=(x x)
+declare -p A
+
+f() { declare -g A=([1]=1); }
+f
+
+declare -p A
+
+unset -f f
+# error to convert associative to indexed
+f() { declare -ga A=([1]=1); }
+f
+
+# error to convert associative to indexed
+declare -a A=([1]=1)
+declare -p A
+
+unset -v A
+
+declare -a A=(x x)
+declare -p A
+
+# error to convert indexed to associative
+f() { declare -gA A=([1]=1); }
+f
+
+declare -p A
+
+# error to convert indexed to associative
+declare -A A=([1]=1)
+declare -p A