To work like this:
- search something
- do Shift + any Bookmark
- the bookmark to be added at the start or the end of the search input
- also to check if initial search has a space at the end, and if not, to add the space
Tried shift_open_search_action, but value 4 it's replacing what it's in search box.
Maybe a new value 5: Insert at the start/end of the search
it was discussed before:
viewtopic.php?p=41877#p41877