Add Vim 8 job handler

Author: tpope

autoload/dispatch.vim

@@ -623,6 +623,10 @@ function! dispatch#compile_command(bang, args, count) abort
 
     if s:dispatch(request)
       call s:cgetfile(request)
+      if request.handler ==# 'job'
+        exe 'botright copen' get(g:, 'dispatch_quickfix_height', '')
+        wincmd p
+      endif
     else
       let request.handler = 'sync'
       let after = 'call DispatchComplete('.request.id.')'
@@ -858,6 +862,9 @@ endfunction
 
 function! s:cgetfile(request, ...) abort
   let request = s:request(a:request)
+  if !has_key(request, 'handler')
+    throw 'Bad request ' . string(request)
+  endif
   let efm = &l:efm
   let makeprg = &l:makeprg
   let compiler = get(b:, 'current_compiler', '')

autoload/dispatch/job.vim

@@ -0,0 +1,81 @@
+" dispatch.vim job strategy
+
+if exists('g:autoloaded_dispatch_job')
+  finish
+endif
+let g:autoloaded_dispatch_job = 1
+
+if !exists('s:waiting')
+  let s:waiting = {}
+endif
+
+function! dispatch#job#handle(request) abort
+  if !has('job') || a:request.action !=# 'make'
+    return 0
+  endif
+  call writefile([], a:request.file)
+  let job = job_start([&shell, &shellcmdflag, a:request.expanded], {
+        \ 'in_io': 'null',
+        \ 'out_mode': 'nl',
+        \ 'err_mode': 'nl',
+        \ 'callback': function('s:output'),
+        \ 'exit_cb': function('s:exit'),
+        \ })
+  let a:request.pid = job_info(job).process
+  let ch_id = ch_info(job_info(job).channel).id
+  let s:waiting[ch_id] = a:request
+  call writefile([a:request.pid], a:request.file . '.pid')
+  let a:request.handler = 'job'
+  return 2
+endfunction
+
+function! s:exit(job, status) abort
+  let ch_id = ch_info(job_info(a:job).channel).id
+  let request = s:waiting[ch_id]
+  call writefile([a:status], request.file . '.complete')
+  " unlet! s:waiting[ch_id]
+  call DispatchComplete(request.id)
+endfunction
+
+function! s:output(ch, output) abort
+  let ch_id = ch_info(a:ch).id
+  let request = s:waiting[ch_id]
+  call writefile([a:output], request.file, 'a')
+
+  if dispatch#request(getqflist({'all': 1}).title) isnot# request
+    return
+  endif
+
+  let efm = &l:efm
+  let makeprg = &l:makeprg
+  let compiler = get(b:, 'current_compiler', '')
+  let cd = exists('*haslocaldir') && haslocaldir() ? 'lcd' : 'cd'
+  let dir = getcwd()
+  let modelines = &modelines
+  try
+    let &modelines = 0
+    let b:current_compiler = get(request, 'compiler', '')
+    if empty(b:current_compiler)
+      unlet! b:current_compiler
+    endif
+    exe cd fnameescape(request.directory)
+    let &l:efm = request.format
+    let &l:makeprg = request.command
+    caddexpr a:output
+  finally
+    let &modelines = modelines
+    exe cd fnameescape(dir)
+    let &l:efm = efm
+    let &l:makeprg = makeprg
+    if empty(compiler)
+      unlet! b:current_compiler
+    else
+      let b:current_compiler = compiler
+    endif
+  endtry
+  cbottom
+endfunction
+
+function! dispatch#job#activate(pid) abort
+  return 0
+endfunction

plugin/dispatch.vim

@@ -33,6 +33,7 @@ endfunction
 
 if !exists('g:dispatch_handlers')
   let g:dispatch_handlers = [
+        \ 'job',
         \ 'tmux',
         \ 'screen',
         \ 'windows',