Features request: Search all

[Noneangel]

In User Custom section, I would like to search all search engine for a given Label row.
Could you add a button on the label row to search for all search engine inside it?

[garywill]

This feature request sounds reasonable. However, it involves some UI redesign. Let me think about how to integrate the button into the label row without making it look ugly. (I'm not good at UI design. Idea is welcome)

Before implementation, would you consider using use_other_engine array to implement a multiple search button? Try to see if this meets your current needs.

[Noneangel]

Thanks.
For the UI, nothing fancy, just add a button on the label row like this:

This feature request is only for convenience, as use_other_engine could be used instead. But I cannot get it to work. see this issue:
#30