Customize Runner

As a fully customizable plugin, this plugin allows you specify how to run your task by adding new item to dictionary g:asyncrun_runner:

function! s:my_runner(command)
    echo "run: " . a:command
endfunc

let g:asyncrun_runner = get(g:, 'asyncrun_runner', {})
let g:asyncrun_runner.test = { cmd -> s:my_runner(cmd) }

Then, you can change g:asynctasks_term_pos to "test", and when you are running your task, your runner function will be called.

For more information, see the wiki page of asyncrun.vim: customize runner.