==== t1 ====
join -t "	" -a 1 -a 2 -e '(unknown)' -o 0,1.2,2.2 /home/src/regress/usr.bin/join/phone /home/src/regress/usr.bin/join/fax > t1.log

==== t2 ====
join /home/src/regress/usr.bin/join/fa1 /home/src/regress/usr.bin/join/fb1 > t2.log

==== t3 ====
join /home/src/regress/usr.bin/join/fa2 /home/src/regress/usr.bin/join/fb2 > t3.log

==== t4 ====
join -t, -o0,1.2,1.3,2.2,2.3 -a1 /home/src/regress/usr.bin/join/t4a.in /home/src/regress/usr.bin/join/t4b.in > t4.log

==== t5 ====
join -t, -o0,1.2,1.3,2.2,2.3 -a2  /home/src/regress/usr.bin/join/t4a.in /home/src/regress/usr.bin/join/t4b.in > t5.log

==== t6 ====
join -t, -o0,1.2,1.3,2.2,2.3 -a1 -a2 /home/src/regress/usr.bin/join/t4a.in /home/src/regress/usr.bin/join/t4b.in > t6.log

==== t7 ====
join -j 2 /home/src/regress/usr.bin/join/t7a.in /home/src/regress/usr.bin/join/t7b.in > t7.log

==== t8 ====
join -j 2 -e empty /home/src/regress/usr.bin/join/t8a.in /home/src/regress/usr.bin/join/t8b.in > t8.log

==== t9-utf8 ====
LC_ALL=en_US.UTF-8 join -t‐ /home/src/regress/usr.bin/join/t9a.in /home/src/regress/usr.bin/join/t9b.in > t9-utf8.log

==== t9-c ====
! LC_ALL=C join -t‐ /home/src/regress/usr.bin/join/t9a.in /home/src/regress/usr.bin/join/t9b.in > t9-c.log 2>&1