enhance s

README.md

@@ -33,7 +33,7 @@ Undefined parameters are (mostly) treated as 1.
 1. `Up`/`Down`: restore to the history command sequence 
 2. `h`/`v`: split the current region horizontally/vertically into 2 regions. The split will respect the ratio A:B. 
 3. `w`: Take two parameters (A, B), and split the current region equally into A columns and B rows. If no parameter is defined, behave the same as `Space` without parameters.
-4. `s`: shift the current editing region with other open sibling regions.
+4. `s`: shift the current editing region with other open sibling regions. If A is defined, shift for A times.
 5. `Space` or `-`: Without parameters, close the current region and move to the next open region. With parameters, set the maximum depth of splitting (default is 2).
 6. `Enter`/`.`: close all open regions. When all regions are closed, press `Enter` will save the layout and exit the editor. 
 7. `Backspace`: undo the last command.

editor.lua

@@ -386,14 +386,14 @@ function start_editor(data)
       elseif key == "s" or key == "S" then
          if #open_areas > 0 then
             key = "s"
+            local times = num_1 or 1
             local top = pop_open_area()
-            local t = {}
+            local t = {top}
             while #open_areas > 0 and open_areas[#open_areas].depth == top.depth do
                t[#t + 1] = pop_open_area()
             end
-            open_areas[#open_areas + 1] = top
             for i = #t, 1, -1 do
-               open_areas[#open_areas + 1] = t[i]
+               open_areas[#open_areas + 1] = t[(i + times - 1) % #t + 1]
             end
             num_1 = nil
             num_2 = nil