Swap anchor and caret using Lua

[Gavin-Holt]

Hi,
I would like to write a Lua function to reverse the direction of any current selection - so I can select more text up or down with the standard shift commands. I can use Cursor.CurSelection and have an unfinished function:

function editor.SwapAnchor(Current)
        if Current.Cursor:HasSelection() then
               if Current.Cursor.CurSelection[1]:GreaterThan(-Current.Cursor.CurSelection[2]) then
                        a, b = Current.Cursor.CurSelection[2], Current.Cursor.CurSelection[1]
                else
                        a, b = Current.Cursor.CurSelection[1], Current.Cursor.CurSelection[2]
                end
        end
end

As you can see I don't know how to re-assign the selection using the retrieved values - which appear to be userdata not strings or ints. Any advice gratefully received G

[Gavin-Holt]

Hi

Finally, nailed it:

function editor.SwapAnchor(Current)
    if Current.Cursor:HasSelection()  then
       if Current.Cursor.CurSelection[1]:GreaterThan(-Current.Cursor.CurSelection[2]) then
            local a, b = Current.Cursor.CurSelection[2], Current.Cursor.CurSelection[1]
            Current.Cursor:SetSelectionStart(-a)
            Current.Cursor:SetSelectionEnd(-b)
        else
            local a, b = Current.Cursor.CurSelection[1], Current.Cursor.CurSelection[2]
            Current.Cursor:SetSelectionStart(-a)
            Current.Cursor:SetSelectionEnd(-b)
        end
    end
end
``
Kind Regards Gavin Holt 

[Gavin-Holt]

Hi

“Premature optimism” - this code does not work. I have made a new issue asking for help.

Kind Regards Gavin Holt

[Gavin-Holt]

Solved #2583 (comment)

Many thanks to Dmitry Maluka

Kind Regards Gavin Holt