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Is there any way to use an interactive interpreter as the makeprg? I want the interpreter to stay interactive after invoking :make.

For example, if I wanted to invoke python on the current file and stay in interactive mode, I would imagine that :set makeprg=python\ -i\ % would do what I wanted, the -i argument telling python to stay in interactive mode after running a script. However if I run a small python script like this vim just prints out the python command prompt (>>>) and then returns me to the editor.

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    I am not sure :make is going to be the proper fit here. Have you thought about using :terminal (NeoVim and Vim 8)? – Peter Rincker Jan 15 '18 at 15:08
  • ah, nice. I'm in neovim and :terminal python -i % does what I want. – felixgb Jan 15 '18 at 15:30
  • well, kind of. Still trying to compose it with the behavior of :make. In effect I want to run :make, and if the make command succeeds, run :terminal python -i %. If :make does not succeed, do the normal make behavior (quickfix list etc) – felixgb Jan 15 '18 at 15:37
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You can run :make to lint and then run :terminal if there are no errors.

command! -nargs=* -bang -complete=file_in_path PythonMake call <SID>PythonMake("<bang>", <q-args>)
function! s:PythonMake(bang, args)
    execute 'make' . a:bang . ' ' . a:args
    if empty(filter(getqflist(), 'v:val.valid'))
        execute 'terminal python -i %'
    endif
endfunction

Note: I have not tested this code in any way nor do I use NeoVim.

The idea is to use :make then check for any valid errors (valid key) which is returned by getqflist(). If no errors then run your :terminal command with the current buffer's filename, %.

For more help see:

:h :command
:h :make
:h getqflist()
:h filter()
:h empty()
:h :terminal
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