update better git mappings

vimrc

@@ -483,9 +483,14 @@ let g:mta_filetypes = {
   Plug 'studio-vx/wordpress.vim', { 'branch': 'universal-ctags' }
 
   "}}}
-"   #fugitive-vim{{{
+"   #vim-fugitive{{{
   " https://github.com/tpope/vim-fugitive/blob/master/README.markdown
   Plug 'tpope/vim-fugitive'
+  command! GdiffInTab tabedit %|Gdiff
+  nnoremap <space>gs :Gstatus<CR>
+  nnoremap <space>gd :GdiffInTab<CR>
+  nnoremap <space>gc :Gcommit<CR>
+  nnoremap <space>gl :Glog<CR>
 
   "}}}
 "   #vim-git{{{
@@ -974,6 +979,8 @@ set spelllang=en_gb
 set dictionary+=/usr/share/dict/brit-a-z.txt,/usr/share/dict/britcaps.txt
 set thesaurus+=/usr/share/dict/mthesaur.txt
 
+set diffopt+=vertical
+
 set tabstop=8
 set softtabstop=2
 set shiftwidth=2
@@ -1026,7 +1033,7 @@ nnoremap 0 ^
 nnoremap <silent><space>cs :let @/=""<cr>
 nnoremap  : :setlocal norelativenumber<CR>:
 nnoremap <silent> <space>rc :so $MYVIMRC<CR>
-nnoremap <silent> <space>nn :set invrelativenumber<CR>
+nnoremap <silent> <space>nn :setlocal invrelativenumber<CR>
 nnoremap <silent><expr> <space>nh (&hls && v:hlsearch ? ':nohls' : ':set hls')."\n"
 nnoremap <silent> <space>sl :set invlist<CR>
 nnoremap <space>aa A<left>
@@ -1049,29 +1056,18 @@ nnoremap <space>dd :DD<CR>
 nnoremap <space>bx :w\|bd<cr>
 " sync highlighting from start
 nnoremap <silent><space>ss :syntax sync fromstart<CR>
-" Chain multiple path completions with / key. Selects the first suggestion if
-" no current selection. Use ctrl-y to finish completion as normal.
-inoremap <expr> / pumvisible()
-    \ ? len(v:completed_item) ? '<C-Y><C-X><C-F>' : '<C-N><C-Y><C-X><C-F>'
-    \ : '/'
 
 "}}}
 "   terminal{{{
 tnoremap <Esc> <C-\><C-n>
 "}}}
 "   git mappings {{{
-nnoremap <space>gs :Gstatus<CR>
+" also see vim-fugitive plugin section
-nnoremap <space>gd :Gdiff<CR>
 nnoremap <space>gD :!clear; echo 'git diff'; git diff<CR>
 nnoremap <space>ga :!clear; git add %; git status<CR>
 nnoremap <space>gA :!clear; git add .; git status<CR>
-nnoremap <space>gc :Gcommit<CR>
 nnoremap <space>gg :!clear; git add %; git commit -m ''<Left>
 nnoremap <space>gp :!clear; echo 'git push'; git push<CR>
-" nnoremap <space>gp :terminal echo ':git push' & git push<CR>
-" nnoremap <space>gp :Gpush<CR>
-" nnoremap <space>gp :pedit | read ! echo 'git push'; git push<CR>
-nnoremap <space>gl :Glog<CR>
 
 "}}}
 "   netrw {{{
@@ -1112,6 +1108,11 @@ inoremap jkrg     <c-o>:reg<cr>
 inoremap :w<cr>   :w<cr>
 inoremap [:w<cr>   :w<cr>
 inoremap {:w<cr>   :w<cr>
+" Chain multiple path completions with / key. Selects the first suggestion if
+" no current selection. Use ctrl-y to finish completion as normal.
+inoremap <expr> / pumvisible()
+    \ ? len(v:completed_item) ? '<C-Y><C-X><C-F>' : '<C-N><C-Y><C-X><C-F>'
+    \ : '/'
 
 "}}}
 "   brace/quotes completion {{{