$ l {foo,bar}.yml*
-rw-r--r--  1 fletch  fletch  275 Jul 21 11:28 bar.yml
-rw-r--r--  1 fletch  fletch   91 Jul 21 11:28 bar.yml.bz2
-rw-r--r--  1 fletch  fletch   80 Jul 21 11:29 bar.yml.gz
-rw-r--r--  1 fletch  fletch  110 Jul 21 11:29 foo.yml
-rw-r--r--  1 fletch  fletch   77 Jul 21 11:29 foo.yml.bz2
-rw-r--r--  1 fletch  fletch   61 Jul 21 11:29 foo.yml.gz
$ for i in {foo,bar}.yml ; { print $i ; cat $i }
foo.yml
---
a: [1, [2, [3, [4, [5, [6, [7, [8, [9, [10]]]]]]]]]]
b: [1, [2, [3, [4, [5, [6, [7, [8, [9, [10]]]]]]]]]]
bar.yml
--- 
a: 
- 1
- - 2
  - - 3
    - - 4
      - - 5
        - - 6
          - - 7
            - - 8
              - - 9
                - - 10
b: 
- 1
- - 2
  - - 3
    - - 4
      - - 5
        - - 6
          - - 7
            - - 8
              - - 9
                - - 10