Entry doubled in rc file

When a command is present twice or more in rc file, it's displayed twice, but with the first id and number of launch. Moreover, it's launched only once.

Introduced in commit 42e132e79d456707cd1f45ad2b1edadaecb5dab3

Solutions:

• Handle it in code
• Use a tag to set a command twice (as proposed in #5 (closed))

Title changed from Entry dubbled in rc file to Entry doubled in rc file

Status changed to closed by commit 980e5e7f7b7861cddf2907fbf5e26eb11e8369f1