On 3/21/22 8:45 AM, Andreas Luik wrote:
Bash Version: 4.4
Patch Level: 20
Release Status: release
Description:
Bash fails to correctly test for parameter to be unset or null when the
parameter is an array reference [*] or [@].
Repeat-By:
myvar[0]=
echo "${myvar[0]:+nonnull}"
<empty> -> OK
echo "${myvar[*]:+nonnull}"
nunnull -> not OK, because "${myvar[*]}" is null
This was changed in bash-5.0.
echo "${myvar[@]:+nonnull}"
nunnull -> likewise not OK, because "${myvar[@]}" is null
This is still kind of useless, but there are cases where bash doesn't
correctly propagate quoted null strings, and those need to be fixed.
--
``The lyf so short, the craft so long to lerne.'' - Chaucer
``Ars longa, vita brevis'' - Hippocrates
Chet Ramey, UTech, CWRU c...@case.edu http://tiswww.cwru.edu/~chet/
