Highlight all occurrences of selected text without search (another color)

[ww7]

Keyboard shortcut to highlight all occurrences of selected text without interference with search feature.
And maybe option to highlight instantly after text selection, like in IDEs.
Color differs to that used for search results.

[rhodes-b]

keyboard driven search is called hints and is already a discussion
#2394

[ww7]

Thanks, this request a much simpler than discussed at #2394