How to create new operator by using existing operator with current motion?

Question

function! OperatorFunc(type, ...)

  " how to call another operator with current motion?

  " do other stuff

endfunction

Is it possible to get motion text? such as get iw from yiw

Answer 1

Visually select motion text, execute existing operator:

function! OperatorFunc(type, ...)

  " change op to desired operator
  call ExecuteOperator(a:type, a:0 > 0, 'op')

  " do other stuff

endfunction

function! ExecuteOperator(type, visual, operator)
  if a:visual
    exe 'norm gv'.a:operator
  els
    exe printf('`[%s`]%s', a:type ==# 'line' ? 'V' : 'v', a:operator)
  endif
endfunction