set correct alias for ksh

which.spec

@@ -1,7 +1,7 @@
 Summary: Displays where a particular program in your path is located
 Name: which
 Version: 2.21
-Release: 15%{?dist}
+Release: 16%{?dist}
 License: GPLv3
 Source0: http://ftp.gnu.org/gnu/which/%{name}-%{version}.tar.gz
 Source1: which2.sh
@@ -39,6 +39,9 @@ rm -f $RPM_BUILD_ROOT%{_infodir}/dir
 %{_mandir}/man1/which.1*
 
 %changelog
+* Tue Nov 05 2019 Than Ngo <than@redhat.com> - 2.21-16
+- set correct alias for ksh
+
 * Sat Jul 27 2019 Fedora Release Engineering <releng@fedoraproject.org> - 2.21-15
 - Rebuilt for https://fedoraproject.org/wiki/Fedora_31_Mass_Rebuild
 

which2.sh

@@ -1,6 +1,6 @@
 # Initialization script for bash and sh
 
-if [ "$0" = ksh ] ; then
+if [ "$0" == "ksh" -o "$0" == "-ksh" ] ; then
   alias which='(alias; typeset -f) | /usr/bin/which --tty-only --read-alias --read-functions --show-tilde --show-dot'
 else
   alias which='(alias; declare -f) | /usr/bin/which --tty-only --read-alias --read-functions --show-tilde --show-dot'