fix double one comment
Fix showing manual
Don't clear  top_slot when clear is called, clear current_slot

* Changelog: bugfix
* @wasnotrice: might be important to note for/after the #759 merge
  ... sorry :(
* it has a change log right in here because the real purpose for
  merge commit etc. is yet another bug
inspect should not be private
Do not switch context to parent after clear/append

* switch to the current_slot that has been used before
* current_slot is set once in the beginning to make this
  work fully
* @wasnotrice: more possible merge headaches
* surprised this bug existed so long before being squashed
* fixes #756
Merge pull request #762 from shoes/clear

Fix slot clearing

- only clear current slot
- after clear, switch to previously current slot rather than parent

Changelog: bugfix