#   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/>.
#
# issues with taking the length of nameref variables
#
# just the basics

scalar=foo
declare -a array=(foo)

declare -n name=array
declare -n name1=array[0]
declare -n name2=unset
declare -n name3=
declare -n name4='a&b'

echo ${#name}	# length of nameref resolving to set variable
echo ${#name1}	# length of nameref resolving to valid non-identifier
echo ${#name2}	# length of nameref resolving to unset variable
echo ${#name3}	# length of nameref resolving to empty string
echo ${#name4}	# length of nameref resolving to invalid non-identifier

unset -n name name1

declare -n name=scalar
declare -n name1=scalar[0]
name4='aa&bb'
declare -n name4

echo ${#name}	# length of nameref resolving to set variable
echo ${#name1}	# length of nameref resolving to valid non-identifier
echo ${#name4}	# length of nameref resolving to invalid non-identifier