Tests for :sort command.     vim: set ft=vim :

STARTTEST
:so small.vim
:"
:/^t1:/+1,/^t2/-1sort
:/^t2:/+1,/^t3/-1sort u
:/^t3:/+1,/^t4/-1sort u /[^:]*:/
:/^t4:/+1,/^t5/-1sort n
:/^t5:/+1,/^t6/-1sort n -[^:]*:-
:/^t6:/+1,/^t7/-1sort o
:/^t7:/+1,/^t8/-1sort x ,.*/,
:/^t8:/+1,/^t9/-1sort n o
:/^t1:/,$wq! test.out
ENDTEST

t1: alphabetical
two test
One test
one test
Two test
t2: alpha, unique
One test
one test
Two test
one test
Two test 
t3: alpha, unique, skip pattern
one: xay
two: aaa
another: tuvy
t4: number
asdf 83 asd
one 333   
xce   9
t5: number and skip
asdf 3 a: sd 11
one 33:4   99
:9 
t6: octal
2389
111
asdf 0014
t7: hex and skip
sf/0x1d3
0x44/1a1
asd/ad 1413
t8: wrong arguments
ccc
bbb
aaa
t8: