[update] gina's extensions in extensions dir

fix typo and add section_b

[add] extension gina

[add] unstaged extensions

[fix] typo

[Done] gina refactoring

[fix] document

[fix] gina's spell

[add] abort

autoload/airline/extensions.vim

@@ -35,17 +35,6 @@ let s:filetype_overrides = {
       \ 'vaffle' : [ 'Vaffle', '' ],
       \ }
 
-if airline#util#has_gina() && get(g:, 'airline#extensions#gina_status', 1)
-  " Gina needs the Vim 7.4.1898, which introduce the <mods> flag for custom commands
-  let s:filetype_overrides['gina-status'] = ['gina', '%{gina#component#repo#preset()}' ]
-  let s:filetype_overrides['diff'] = ['gina', '%{gina#component#repo#preset()}' ]
-  let s:filetype_overrides['gina-log'] = ['gina', '%{gina#component#repo#preset()}' ]
-  let s:filetype_overrides['gina-tag'] = ['gina', '%{gina#component#repo#preset()}' ]
-  let s:filetype_overrides['gina-branch'] = ['gina', '%{gina#component#repo#branch()}' ]
-  let s:filetype_overrides['gina-reflog'] = ['gina', '%{gina#component#repo#branch()}' ]
-  let s:filetype_overrides['gina-ls'] = ['gina', '%{gina#component#repo#branch()}' ]
-endif
-
 if get(g:, 'airline#extensions#nerdtree_statusline', 1)
   let s:filetype_overrides['nerdtree'] = [ get(g:, 'NERDTreeStatusline', 'NERD'), '' ]
 else
@@ -171,6 +160,11 @@ function! airline#extensions#load()
     call add(s:loaded_ext, 'denite')
   endif
 
+  if get(g:, 'loaded_gina', 0) && get(g:, 'airline#extensions#gina#enabled', 1)
+    call airline#extensions#gina#init(s:ext)
+    call add(s:loaded_ext, 'gina')
+  endif
+
   if exists(':NetrwSettings')
     call airline#extensions#netrw#init(s:ext)
     call add(s:loaded_ext, 'netrw')

autoload/airline/extensions/gina.vim

@@ -0,0 +1,20 @@
+scriptencoding utf-8
+if !get(g:, 'loaded_gina', 0)
+  finish
+endif
+
+function! airline#extensions#gina#apply(...) abort
+  if (&ft =~# 'gina' && &ft !~# 'blame') || &ft ==# 'diff'
+    call a:1.add_section('airline_a', ' gina ')
+    call a:1.add_section('airline_b', ' %{gina#component#repo#branch()} ')
+    call a:1.split()
+    call a:1.add_section('airline_y', ' staged %{gina#component#status#staged()} ')
+    call a:1.add_section('airline_z', ' unstaged %{gina#component#status#unstaged()} ')
+    return 1
+  endif
+endfunction
+
+function! airline#extensions#gina#init(ext) abort
+  let g:gina_force_overwrite_statusline = 0
+  call a:ext.add_statusline_func('airline#extensions#gina#apply')
+endfunction

doc/airline.txt

@@ -715,7 +715,7 @@ Airline displays the gina.vim specific statusline.
 (for details, see the help of gina.vim)
 
 * enable/disable bufferline integration >
-  let g:airline#extensions#gina_status = 1
+  let g:airline#extensions#gina#enabled = 1
 <  default: 1
 
 -------------------------------------                     *airline-grepper*