On Mon, May 2, 2016 at 2:30 PM, Chet Ramey <chet.ra...@case.edu> wrote:
I ended up writing a new function: valid_nameref_value(name, flags) which > I can customize to serve this purpose. > Looks like this ends up getting bypassed in some cases when the value is an empty string: declare -n r; : ${r=}declare -n r; r=""declare -n r; printf -v r '' r=""; declare -n r Each of these result in: $ declare -p rdeclare -n r="" Which itself is invalid: $ declare -n r="" bash: declare: `': not a valid identifier This new nameref takes assignments but doesn’t seem to do anything with them. It does cause at least one segfault though: $ declare -n r; r="" $ export r # or readonly r Segmentation fault: 11