1-o - --sort=no => ok
2-o tags --sort=no => ok
3-o tags => ok
4-o - => ok
5-e -o - --sort=no => ok
6-e -o TAGS --sort=no => ok
7-e -o TAGS => ok
8-e -o - => ok
9-x -o - --sort=no => ok
10-x -o tags-x --sort=no => ok
11-x -o tags-x => ok
12-x -o - => ok
13