Keyboard shortcut for evaluating the current cell while keeping the cursor in the cell

Question

Make cursor stay in input cell provides a function for keeping the cursor in a cell after it was evaluated. I tried adding that function directly into KeyEventTranslations.tr to create a keyboard shortcut but that led to Mathematica sending an error when loading. I tried wrapping it in KernelExecute but that did not work. I would also like to modify shift plus enter to remove the setting from the function in the link when I want the standard way of evaluating a cell.

Answer 1

The following adds a new menu item "Evaluate Cells (Keep Selection)" with shortcut "Alt+Shift+Return" that keeps the cursor where it is:

FrontEndExecute@FrontEnd`AddMenuCommands[
    If[$OperatingSystem == "Windows", "EvaluateCells", "HandleShiftReturn"], {
      MenuItem["Evaluate Cells (Keep Selection)",
        KernelExecute@evaluateKeepSelection[],
        System`MenuKey[
          "Return",
          System`Modifiers -> {"Shift", "Option"}
          ],
        System`MenuEvaluator -> Automatic
        ]}]
evaluateKeepSelection[] := 
 With[{nb := EvaluationNotebook[], c := EvaluationCell[]}, 
  With[{cv := 
     CurrentValue[nb, {"TaggingRules", "LastCursorPosition"}], 
    pos := FrontEndExecute@
      FrontEnd`UndocumentedGetSelectionPacket[nb]}, 
   cv = "CharacterRange" /. pos;
   FrontEndExecute@FrontEndToken["EvaluateCells"]; 
   SetOptions[nb, 
    CellEpilog :> 
     If[ListQ[cv], SelectionMove[c, Before, CellContents]; 
      SelectionMove[nb, Next, Character, First[cv]]; 
      SelectionMove[nb, After, Character]; 
      FrontEndExecute@
       Table[FrontEndToken["SelectNext"], -Subtract @@ cv];
      cv = False]]]
  ]

Note that this keeps the usual behavior of "Shift+Return" as it is, it just adds an additional shortcut that keeps the selection.