fix tilde expansion in associative array compound assignments

tests/array31.sub

@@ -0,0 +1,43 @@
+#   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/>.
+#
+
+# Tilde expansion in indexed array assignments; prep for future work
+HOME=/homes/cj
+
+declare -a aa
+aa=([0]=~/Desktop)
+declare -p aa
+unset aa
+
+declare -a aa=([0]=~/Desktop)
+declare -p aa
+unset aa
+
+declare -a aa=([0]=~/Desktop:~/Library:~/Documents)
+declare -p aa
+unset aa
+
+declare -a aa
+aa=([0]=~/Desktop:~/Library:~/Documents)
+declare -p aa
+unset aa
+
+declare -a aa=([0]=~/Desktop:~/Library:~/Documents [1]=~/Applications)
+declare -p aa
+unset aa
+
+declare -a aa
+aa=([0]=~/Desktop:~/Library:~/Documents [1]=~/Applications)
+declare -p aa
+unset aa