build 1
set b b
set c c
----


iter files=(1)
first
next
next
----
b:b
c:c
.

build 2
set d d
set f f
----

iter files=(1, 2)
first
next
next
next
----
b:b
c:c
d:d
f:f

# Test seeks within files.

iter files=(1, 2)
seek-ge bb
next
next
next
----
c:c
d:d
f:f
.

iter files=(1, 2)
seek-ge a
next
next
next
----
b:b
c:c
d:d
f:f

iter files=(1, 2)
seek-ge d
next
next
----
d:d
f:f
.

iter files=(1, 2)
seek-ge f
next
----
f:f
.

iter files=(1, 2)
seek-ge ff
next
----
.
.
