ksh 'typeset -xu' and 'typeset -xl' failing to change word case
Issue
In Red Hat Enterprise Linux (RHEL) 6 starting with ksh-20120801-10.el6 using typeset -xl to lower case a variable or typeset -xu to uppercase a variable fails
# typeset -xu upper=blah
# echo $upper
blah
# typeset -xl lower=BLAH
# echo $lower
BLAH
Environment
- Red Hat Enterprise Linux (RHEL) 6
ksh-20120801-10.el6throughksh-20120801-10.el6(inclusive)
- Red Hat Enterprise Linux 7
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