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Description of problem:
KornShell-Scripts run into an error when sourcing /etc/profile.d/which2.sh and invoked by SHELL=!KSH.

Version-Release number of selected component (if applicable):
2.21-16.el8

How reproducible:

Steps to Reproduce:
1. Source /etc/profile.d/which2.sh in KSH-Script (with #!/bin/ksh as shebang).
2. Invoke script from e.g. bash.

Actual results:
Erorr-Message: export: -f: unknown option

Expected results:
KSH-Script runs properly.

Additional info:

[ec2-user@machine tmp]$ cat tst.ksh
#!/bin/ksh
#set -x
. /etc/profile
echo "$0"

With implicit interpreter:
[ec2-user@machine tmp]$ ./tst.ksh
./tst.ksh[3]: .[70]: .[19]: export: -f: unknown option
Usage: export [-p] [name[=value]...]

With explicit interpreter:
[ec2-user@machine tmp]$ /bin/ksh ./tst.ksh
./tst.ksh

this issue was reported,  https://bugzilla.redhat.com/show_bug.cgi?id=2009547
Please download new build with the fix from https://than.fedorapeople.org/rhel8/which/

Thanks

*** This bug has been marked as a duplicate of bug 2009547 ***