Merge 32e2cd9e47 into d74a7cff4c

References: https://github.com/tpope/vim-fugitive/pull/2369

autoload/fugitive.vim

@@ -2162,14 +2162,57 @@ function! s:TreeInfo(dir, commit) abort
   return [{}, -1]
 endfunction
 
+let s:index_info = {}
+function! s:IndexInfo(dir, commit_stage, path) abort
+  let cache_key = 'cache://' . a:dir . '//' . a:path
+  let index = get(s:index_info, cache_key, [])
+  let newftime = getftime(fugitive#Find('.git/index', a:dir))
+
+  if get(index, 0, -1) == newftime
+    return get(get(index, 1, {}), a:commit_stage, [])
+  endif
+
+  let indexes = {'0': [], '1': [], '2': [], '3': []}
+  let s:index_info[cache_key] = [newftime, indexes]
+
+  let result = fugitive#Execute(['--literal-pathspecs', 'ls-files', '--stage', '--', a:path])
+  if result.exit_status
+    return []
+  endif
+  for line in result.stdout[:2]
+    " Inspect up to the first three lines to find the correct stage
+    if empty(line)
+      break
+    endif
+    let [info, filename] = split(line, "\t")
+    let [mode, sha, stage] = split(info, '\s\+')
+    if filename ==# a:path
+      let indexes[stage] = [newftime, mode, 'blob', sha, -2]
+    else
+      " Only support stage '0' for tree objects
+      let indexes['0'] = [newftime, '040000', 'tree', '', 0]
+    endif
+  endfor
+  return get(indexes, a:commit_stage, [])
+endfunction
+
 function! s:PathInfo(url) abort
   let [dir, commit, file] = s:DirCommitFile(a:url)
   if empty(dir) || !get(g:, 'fugitive_file_api', 1)
     return [-1, '000000', '', '', -1]
   endif
   let path = substitute(file[1:-1], '/*$', '', '')
-  let [tree, ftime] = s:TreeInfo(dir, commit)
-  let entry = empty(path) ? [ftime, '040000', 'tree', '', -1] : get(tree, path, [])
+
+  if empty(path)
+    let [_, ftime] = s:TreeInfo(dir, commit)
+    let entry = [ftime, '040000', 'tree', '', -1]
+  elseif commit =~# '^:\=[0-3]$'
+    let entry = s:IndexInfo(dir, commit[-1:-1], path)
+  else
+    let [tree, ftime] = s:TreeInfo(dir, commit)
+    let entry = get(tree, path, [])
+  endif
+
   if empty(entry) || file =~# '/$' && entry[2] !=# 'tree'
     return [-1, '000000', '', '', -1]
   else
@@ -5191,7 +5234,7 @@ function! s:DoToggleHeadHeader(value) abort
 endfunction
 
 function! s:DoToggleHelpHeader(value) abort
-  exe 'help fugitive-map'
+  exe 'help fugitive-maps'
 endfunction
 
 function! s:DoStagePushHeader(value) abort
@@ -7917,6 +7960,7 @@ function! s:MapGitOps(is_ftplugin) abort
   exe s:Map('n', 'cc', ':<C-U>Git commit<CR>', '<silent>', ft)
   exe s:Map('n', 'ce', ':<C-U>Git commit --amend --no-edit<CR>', '<silent>', ft)
   exe s:Map('n', 'cw', ':<C-U>Git commit --amend --only<CR>', '<silent>', ft)
+  exe s:Map('n', 'cW', ':<C-U>Git commit --fixup=reword:<C-R>=<SID>SquashArgument()<CR>', '', ft)
   exe s:Map('n', 'cva', ':<C-U>tab Git commit -v --amend<CR>', '<silent>', ft)
   exe s:Map('n', 'cvc', ':<C-U>tab Git commit -v<CR>', '<silent>', ft)
   exe s:Map('n', 'cRa', ':<C-U>Git commit --reset-author --amend<CR>', '<silent>', ft)
@@ -7926,7 +7970,8 @@ function! s:MapGitOps(is_ftplugin) abort
   exe s:Map('n', 'cF', ':<C-U><Bar>Git -c sequence.editor=true rebase --interactive --autosquash<C-R>=<SID>RebaseArgument()<CR><Home>Git commit --fixup=<C-R>=<SID>SquashArgument()<CR>', '', ft)
   exe s:Map('n', 'cs', ':<C-U>Git commit --no-edit --squash=<C-R>=<SID>SquashArgument()<CR>', '', ft)
   exe s:Map('n', 'cS', ':<C-U><Bar>Git -c sequence.editor=true rebase --interactive --autosquash<C-R>=<SID>RebaseArgument()<CR><Home>Git commit --no-edit --squash=<C-R>=<SID>SquashArgument()<CR>', '', ft)
-  exe s:Map('n', 'cA', ':<C-U>Git commit --edit --squash=<C-R>=<SID>SquashArgument()<CR>', '', ft)
+  exe s:Map('n', 'cn', ':<C-U>Git commit --edit --squash=<C-R>=<SID>SquashArgument()<CR>', '', ft)
+  exe s:Map('n', 'cA', ':<C-U>echoerr "Use cn"<CR>', '<silent><unique>', ft)
   exe s:Map('n', 'c?', ':<C-U>help fugitive_c<CR>', '<silent>', ft)
 
   exe s:Map('n', 'cr<Space>', ':Git revert<Space>', '', ft)
@@ -8045,8 +8090,8 @@ function! fugitive#MapJumps(...) abort
 
     call s:Map('n', '.',     ":<C-U> <C-R>=<SID>fnameescape(fugitive#Real(@%))<CR><Home>")
     call s:Map('x', '.',     ":<C-U> <C-R>=<SID>fnameescape(fugitive#Real(@%))<CR><Home>")
-    call s:Map('n', 'g?',    ":<C-U>help fugitive-map<CR>", '<silent>')
-    call s:Map('n', '<F1>',  ":<C-U>help fugitive-map<CR>", '<silent>')
+    call s:Map('n', 'g?',    ":<C-U>help fugitive-maps<CR>", '<silent>')
+    call s:Map('n', '<F1>',  ":<C-U>help fugitive-maps<CR>", '<silent>')
   endif
 
   let old_browsex = maparg('<Plug>NetrwBrowseX', 'n')

doc/fugitive.txt

@@ -465,15 +465,18 @@ Commit maps ~
 
 cc                      Create a commit.
 
+cvc                     Create a commit with -v.
+
 ca                      Amend the last commit and edit the message.
 
+cva                     Amend the last commit with -v.
+
 ce                      Amend the last commit without editing the message.
 
 cw                      Reword the last commit.
 
-cvc                     Create a commit with -v.
-
-cva                     Amend the last commit with -v
+cW                      Create an `amend!` commit that rewords the commit
+                        under the cursor.
 
 cf                      Create a `fixup!` commit for the commit under the
                         cursor.
@@ -487,8 +490,8 @@ cs                      Create a `squash!` commit for the commit under the
 cS                      Create a `squash!` commit for the commit under the
                         cursor and immediately rebase it.
 
-cA                      Create a `squash!` commit for the commit under the
-                        cursor and edit the message.
+cn                      Create a `squash!` commit for the commit under the
+(formerly cA)           cursor and edit the message.
 
 c<Space>                Populate command line with ":Git commit ".