2014-01-01 * Test 1
    A          $10 ; :bar:
    B              ; :foo:

2014-01-02 * Test 2
    A          $10 ; :a:
    B

2014-01-03 * Test 3
    A          $10
    B              ; :b:

2014-01-03 * Test 4
    ; :xxx:
    A          $10
    B

2014-01-03 * Test 5
    A          $10 ; a: aaa
    B

2014-02-04 * Test 6
    A          $10 ; a: aaa
    B

2014-01-01 * Test 7
    A          $10
    B              ; b: bbb

test tags
a
b
bar
foo
xxx
end test

test tags --values
a
a: aaa
b
b: bbb
bar
foo
xxx
end test

test tags --values --count
1 a
2 a: aaa
1 b
1 b: bbb
1 bar
1 foo
2 xxx
end test