▲ #23966 +:
Make a vertical selection among the lines.
** I think 1 character should be deleted with this step.
Now the selection is divided into multiple selections.
** Hope the selection can revert with Ctrl+Z.
Actually I hope delete-char-by-char mode can be converted to delete-all-at-once mode at any time.
Enable “Keep selections while typing in multiple selections”.
Select all “xx” (or “oo”, to see different result).
(Press Esc once, to see different result.)
Use “Insert CR+LF” command 2+ times.
** Note the length of the selections.