pref(git): use stdout/stdin instead of .git\COMMIT_EDITMSG

bundle/git.vim/autoload/git/commit.vim

@@ -3,6 +3,10 @@ let s:BUFFER = SpaceVim#api#import('vim#buffer')
 
 let s:commit_bufnr = -1
 
+" Init 
+let s:commit_context = []
+let s:commit_jobid = -1
+
 function! git#commit#run(...) abort
   if index(a:1, '-m') ==# -1
     if bufexists(s:commit_bufnr) && index(tabpagebuflist(), s:commit_bufnr) !=# -1
@@ -14,7 +18,7 @@ function! git#commit#run(...) abort
   else
     let s:commit_bufnr = -1
   endif
-  let s:lines = []
+  let s:commit_context = []
   if empty(a:1)
     let cmd = ['git', '--no-pager', '-c',
           \ 'core.editor=cat', '-c',
@@ -37,7 +41,7 @@ function! git#commit#run(...) abort
           \ expand(getcwd(), ':p'),
           \ 'commit',] + a:1
   endif
-  call s:JOB.start(cmd,
+  let s:commit_jobid = s:JOB.start(cmd,
         \ {
         \ 'on_stderr' : function('s:on_stderr'),
         \ 'on_stdout' : function('s:on_stdout'),
@@ -47,19 +51,31 @@ function! git#commit#run(...) abort
 endfunction
 
 function! s:on_stdout(id, data, event) abort
+  if a:id !=# s:commit_jobid
+    " ignore previous git commit job
+    return
+  endif
   for data in a:data
     call git#logger#info('git-commit stdout:' . data)
   endfor
-  let s:lines += a:data
+  let s:commit_context += a:data
 endfunction
 function! s:on_stderr(id, data, event) abort
+  if a:id !=# s:commit_jobid
+    " ignore previous git commit job
+    return
+  endif
   for data in a:data
     call git#logger#info('git-commit stderr:' . data)
   endfor
   " stderr should not be added to commit buffer
-  " let s:lines += a:data
+  " let s:commit_context += a:data
 endfunction
 function! s:on_exit(id, data, event) abort
+  if a:id !=# s:commit_jobid
+    " ignore previous git commit job
+    return
+  endif
   call git#logger#info('git-exit exit data:' . string(a:data))
   if s:commit_bufnr == -1
     if a:data ==# 0
@@ -68,7 +84,7 @@ function! s:on_exit(id, data, event) abort
       echo 'commit failed!'
     endif
   else
-    call s:BUFFER.buf_set_lines(s:commit_bufnr, 0 , -1, 0, s:lines)
+    call s:BUFFER.buf_set_lines(s:commit_bufnr, 0 , -1, 0, s:commit_context)
   endif
 endfunction
 
@@ -101,8 +117,7 @@ endfunction
 " when run `:wq` the commit window will not be closed
 " :q      -- QuitPre -> WinLeave
 function! s:BufWriteCmd() abort
-  let commit_file = '.git\COMMIT_EDITMSG'
+  let s:commit_context = getline(1, '$')
-  call writefile(getline(1, '$'), commit_file)
   setlocal nomodified
 endfunction
 
@@ -119,7 +134,7 @@ function! s:WinLeave() abort
           \ }
           \ )
     " line start with # should be ignored
-    call s:JOB.send(id, filter(readfile('.git\COMMIT_EDITMSG'), 'v:val !~# "^\s*#"'))
+    call s:JOB.send(id, filter(s:commit_context, 'v:val !~# "^\s*#"'))
     call s:JOB.chanclose(id, 'stdin')
   endif
 endfunction