Can anyone check this out on the different versions of vim? I think I have stumbled across another way to go from insert to normal mode. That way is Alt-l. That is Alt and a lower case L together. What say you?
Apparently this is already noted:
“Thus in insert mode pressing alt+h alt+j alt+k alt+l all take you to normal mode and move in the expected direction. You can hold down alt when moving even while in normal mode since the additional ESC that is sent does no harm.”
Although the alt+l does NOT move to the right.
One caveat that I have found is that a macro must have Ctrl-[ or Esc to operate. The macro will not work when Alt-l is used as Esc in the macro definition.