Merge 28f17e5469 into d74a7cff4c

Git send-email by default uses multi-file edit mode
(sendemail.multiEdit) when more than one patch file requires editing an
associated email message and/or cover-letters.  Multi edit mode spawns
one editor instance with multiple files in argument list.  This behavior
is supported by creating multiple splits for a running vim instance when
`:G send-email` is called.  When the user sets sendemail.multiEdit to
false in the local or global config, if multiple files need editing then
they are processed sequentially in a single split at a time.

Closes #2352

autoload/fugitive.vim

@@ -4,6 +4,11 @@
 " The functions contained within this file are for internal use only.  For the
 " official API, see the commented functions in plugin/fugitive.vim.
 
+if exists('g:autoloaded_fugitive')
+  finish
+endif
+let g:autoloaded_fugitive = 1
+
 " Section: Utility
 
 function! s:function(name) abort
@@ -2066,8 +2071,6 @@ function! s:Expand(rev, ...) abort
     endif
   elseif s:Slash(a:rev) =~# '^\a\a\+://'
     let file = substitute(a:rev, '\\\@<!\%(#\a\|%\x\x\)', '\\&', 'g')
-  elseif a:rev =~# '^:[!#%$]'
-    let file = ':0' . a:rev
   else
     let file = a:rev
   endif
@@ -2694,7 +2697,7 @@ function! s:MapStatus() abort
   call s:MapMotion('gP', "exe <SID>StageJump(v:count, 'Unpulled')")
   call s:MapMotion('gr', "exe <SID>StageJump(v:count, 'Rebasing')")
   call s:Map('n', 'C', ":echoerr 'fugitive: C has been removed in favor of cc'<CR>", '<silent><unique>')
-  call s:Map('n', 'a', ":echoerr 'fugitive: a has been removed in favor of s'<CR>", '<silent><unique>')
+  call s:Map('n', 'a', ":<C-U>execute <SID>Do('Toggle',0)<CR>", '<silent>')
   call s:Map('n', 'i', ":<C-U>execute <SID>NextExpandedHunk(v:count1)<CR>", '<silent>')
   call s:Map('n', "=", ":<C-U>execute <SID>StageInline('toggle',line('.'),v:count)<CR>", '<silent>')
   call s:Map('n', "<", ":<C-U>execute <SID>StageInline('hide',  line('.'),v:count)<CR>", '<silent>')
@@ -2937,34 +2940,20 @@ function! s:StatusRender(stat) abort
     endif
 
     let sequencing = []
-    try
-      let sequencer_todo = reverse(readfile(fugitive#Find('.git/sequencer/todo', dir)))
-    catch
-    endtry
-    if exists('sequencer_todo')
-      for line in sequencer_todo
+    if filereadable(fugitive#Find('.git/sequencer/todo', dir))
+      for line in reverse(readfile(fugitive#Find('.git/sequencer/todo', dir)))
         let match = matchlist(line, '^\(\l\+\)\s\+\(\x\{4,\}\)\s\+\(.*\)')
         if len(match) && match[1] !~# 'exec\|merge\|label'
           call add(sequencing, {'type': 'Rebase', 'status': get(s:rebase_abbrevs, match[1], match[1]), 'commit': match[2], 'subject': match[3]})
         endif
       endfor
-    else
-      try
-        let merge_msg = get(readfile(fugitive#Find('.git/MERGE_MSG', dir)), 0, '')
-      catch
-      endtry
-    endif
-    if exists('merge_msg')
+    elseif filereadable(fugitive#Find('.git/MERGE_MSG', dir))
       if filereadable(fugitive#Find('.git/CHERRY_PICK_HEAD', dir))
         let pick_head = fugitive#Execute(['rev-parse', '--short', 'CHERRY_PICK_HEAD', '--'], dir).stdout[0]
-        if !empty(pick_head)
-          call add(sequencing, {'type': 'Rebase', 'status': 'pick', 'commit': pick_head, 'subject': merge_msg})
-        endif
+        call add(sequencing, {'type': 'Rebase', 'status': 'pick', 'commit': pick_head, 'subject': get(readfile(fugitive#Find('.git/MERGE_MSG', dir)), 0, '')})
       elseif filereadable(fugitive#Find('.git/REVERT_HEAD', dir))
         let pick_head = fugitive#Execute(['rev-parse', '--short', 'REVERT_HEAD', '--'], dir).stdout[0]
-        if !empty(pick_head)
-          call add(sequencing, {'type': 'Rebase', 'status': 'revert', 'commit': pick_head, 'subject': merge_msg})
-        endif
+        call add(sequencing, {'type': 'Rebase', 'status': 'revert', 'commit': pick_head, 'subject': get(readfile(fugitive#Find('.git/MERGE_MSG', dir)), 0, '')})
       endif
     endif
 
@@ -2987,7 +2976,7 @@ function! s:StatusRender(stat) abort
     endif
 
     call s:AddSection(to, 'Rebasing ' . rebasing_head, rebasing)
-    call s:AddSection(to, get(get(sequencing, 0, {}), 'status', '') ==# 'revert' ? 'Reverting' : 'Cherry Picking', sequencing)
+    call s:AddSection(to, get(get(sequencing, 0, {}), 'tous', '') ==# 'revert' ? 'Reverting' : 'Cherry Picking', sequencing)
     call s:AddSection(to, 'Untracked', untracked)
     call s:AddDiffSection(to, stat, 'Unstaged', unstaged)
     call s:AddDiffSection(to, stat, 'Staged', staged)
@@ -3454,33 +3443,37 @@ function! s:RunEdit(state, tmp, job) abort
   endif
   call remove(a:state, 'request')
   let sentinel = a:state.file . '.edit'
-  let file = FugitiveVimPath(readfile(sentinel, '', 1)[0])
-  try
-    if !&equalalways && a:state.mods !~# '\<\d*tab\>' && 3 > (a:state.mods =~# '\<vert' ? winwidth(0) : winheight(0))
-      let noequalalways = 1
-      setglobal equalalways
-    endif
-    let mods = s:Mods(a:state.mods, 'SpanOrigin')
-    exe substitute(mods, '\<tab\>', '-tab', 'g') 'keepalt split' s:fnameescape(file)
-  finally
-    if exists('l:noequalalways')
-      setglobal noequalalways
-    endif
-  endtry
-  set bufhidden=wipe
-  call s:InitializeBuffer(a:state)
-  let bufnr = bufnr('')
-  let s:edit_jobs[bufnr] = [a:state, a:tmp, a:job, sentinel]
-  call fugitive#DidChange(a:state.git_dir)
-  if bufnr == bufnr('') && !exists('g:fugitive_event')
+  let files = readfile(sentinel, '')
+  call writefile([len(files)], sentinel)
+  for file in reverse(files)
+    let file = FugitiveVimPath(file)
     try
-      let g:fugitive_event = a:state.git_dir
-      let g:fugitive_result = a:state
-      exe s:DoAutocmd('User FugitiveEditor')
+      if !&equalalways && a:state.mods !~# '\<\d*tab\>' && 3 > (a:state.mods =~# '\<vert' ? winwidth(0) : winheight(0))
+        let noequalalways = 1
+        setglobal equalalways
+      endif
+      let mods = s:Mods(a:state.mods, 'SpanOrigin')
+      exe substitute(mods, '\<tab\>', '-tab', 'g') 'keepalt split' s:fnameescape(file)
     finally
-      unlet! g:fugitive_event g:fugitive_result
+      if exists('l:noequalalways')
+        setglobal noequalalways
+      endif
     endtry
-  endif
+    set bufhidden=wipe
+    call s:InitializeBuffer(a:state)
+    let bufnr = bufnr('')
+    let s:edit_jobs[bufnr] = [a:state, a:tmp, a:job, sentinel]
+    call fugitive#DidChange(a:state.git_dir)
+    if bufnr == bufnr('') && !exists('g:fugitive_event')
+      try
+        let g:fugitive_event = a:state.git_dir
+        let g:fugitive_result = a:state
+        exe s:DoAutocmd('User FugitiveEditor')
+      finally
+        unlet! g:fugitive_event g:fugitive_result
+      endtry
+    endif
+  endfor
   return 1
 endfunction
 
@@ -3634,6 +3627,9 @@ if !exists('s:edit_jobs')
 endif
 function! s:RunWait(state, tmp, job, ...) abort
   if a:0 && filereadable(a:1)
+    if a:0 > 1 && a:2 > 0
+      return ''
+    endif
     call delete(a:1)
   endif
   try
@@ -3736,8 +3732,16 @@ function! s:RunBufDelete(bufnr) abort
   endif
   if has_key(s:edit_jobs, a:bufnr) |
     call add(s:resume_queue, remove(s:edit_jobs, a:bufnr))
-    call feedkeys("\<C-\>\<C-N>:redraw!|call delete(" . string(s:resume_queue[-1][0].file . '.edit') .
-          \ ")|call fugitive#Resume()|checktime\r", 'n')
+    let sentinel = s:resume_queue[-1][0].file . '.edit'
+    let active_buffers = str2nr(readfile(sentinel, '', 1)[0]) - 1
+    call add(s:resume_queue[-1], active_buffers)
+    if active_buffers < 1
+      call feedkeys("\<C-\>\<C-N>:redraw!|call delete(" . string(sentinel) .
+            \ ")|call fugitive#Resume()|checktime\r", 'n')
+    else
+      call writefile([active_buffers], sentinel)
+      call fugitive#Resume()
+    endif
   endif
 endfunction
 
@@ -3951,7 +3955,7 @@ function! fugitive#Command(line1, line2, range, bang, mods, arg, ...) abort
     let env.FUGITIVE = state.file
     let editor = 'sh ' . s:TempScript(
           \ '[ -f "$FUGITIVE.exit" ] && cat "$FUGITIVE.exit" >&2 && exit 1',
-          \ 'echo "$1" > "$FUGITIVE.edit"',
+          \ 'for arg; do echo "$arg" >> "$FUGITIVE.edit"; done',
           \ 'printf "\033]51;fugitive:edit\007" >&2',
           \ 'while [ -f "$FUGITIVE.edit" -a ! -f "$FUGITIVE.exit" ]; do sleep 0.05 2>/dev/null || sleep 1; done',
           \ 'exit 0')
@@ -7446,12 +7450,9 @@ function! s:BrowserOpen(url, mods, echo_copy) abort
   else
     if !exists('g:loaded_netrw')
       runtime! autoload/netrw.vim
-      runtime! autoload/netrw/os.vim
     endif
     if exists('*netrw#Open')
       return 'echo '.string(url).'|' . mods . 'call netrw#Open('.string(url).')'
-    elseif exists('*netrw#os#Open')
-      return 'echo '.string(url).'|' . mods . 'call netrw#os#Open('.string(url).')'
     elseif exists('*netrw#BrowseX')
       return 'echo '.string(url).'|' . mods . 'call netrw#BrowseX('.string(url).', 0)'
     elseif exists('*netrw#NetrwBrowseX')
@@ -8044,8 +8045,8 @@ function! fugitive#MapJumps(...) abort
       call s:MapMotion(']]', 'exe <SID>NextSection(v:count1)')
       call s:MapMotion('[]', 'exe <SID>PreviousSectionEnd(v:count1)')
       call s:MapMotion('][', 'exe <SID>NextSectionEnd(v:count1)')
-      call s:Map('no', '*', '<SID>PatchSearchExpr(0)', '<expr>')
-      call s:Map('no', '#', '<SID>PatchSearchExpr(1)', '<expr>')
+      call s:Map('nxo', '*', '<SID>PatchSearchExpr(0)', '<expr>')
+      call s:Map('nxo', '#', '<SID>PatchSearchExpr(1)', '<expr>')
     endif
     call s:Map('n', 'S',    ':<C-U>echoerr "Use gO"<CR>', '<silent><unique>')
     call s:Map('n', 'dq', ":<C-U>call fugitive#DiffClose()<CR>", '<silent>')