nvim: Drop vim-fugitive and move to gina

vim-fugitive from Tpope is synchronous on neovim. It is
asynchronous on vim when vim-dispatch is available but for
neovim it will always be synchronous. Gina is asynchronous
by default and does not freeze on large repos like fugitive
does. So drop fugitive, other plugins and settings dependent
on it.

While at it, also add some more good things from git gutter
and some shortcuts.

Signed-off-by: Sanchayan Maity <maitysanchayan@gmail.com>

nvim/.config/nvim/init.vim

@@ -27,18 +27,12 @@ Plug 'tmux-plugins/vim-tmux-focus-events'
 Plug 'wellle/tmux-complete.vim'
 " For LaTeX support
 Plug 'lervag/vimtex'
-" Primary git support
-Plug 'tpope/vim-fugitive'
-" Manage git hunks
+" Git support
+Plug 'lambdalisue/gina.vim'
 Plug 'airblade/vim-gitgutter'
-" Git blame
 Plug 'rhysd/git-messenger.vim'
-" Git logs
-Plug 'rbong/vim-flog'
-" Handle merge conflicts
 Plug 'samoshkin/vim-mergetool'
-" Git diffs in quickfix list
-Plug 'oguzbilgic/vim-gdiff'
+Plug 'whiteinge/diffconflicts'
 " Boost vim command line mode
 Plug 'vim-utils/vim-husk'
 " GDB
@@ -118,7 +112,7 @@ let maplocalleader=","
 
 set colorcolumn=80      " Highlight 80th column
 set laststatus=2        " Always show status bar
-set updatetime=300      " Let plugins show effects after 500ms
+set updatetime=100      " Let plugins show effects after 100ms
 set mouse-=a            " Disable mouse click to go to position
 set encoding=utf-8
 set exrc                " Allow loading local .nvimrc files
@@ -219,6 +213,7 @@ nnoremap <Leader>fo  :Locate<SPACE>
 nnoremap <Leader>fk  :Maps<CR>
 nnoremap <Leader>f/  :Rg<CR>
 nnoremap <Leader>fs  :exe ':Rg ' . expand('<cword>')<CR>
+nnoremap <Leader>fg  :GGrep<SPACE>
 imap <C-x><C-w> <Plug>(fzf-complete-word)
 imap <C-x><C-p> <Plug>(fzf-complete-path)
 imap <C-x><C-f> <Plug>(fzf-complete-file)
@@ -247,23 +242,26 @@ nnoremap ]s :FloatermNext<CR>
 nnoremap st :FloatermToggle<CR>
 " For git
 nnoremap <Leader>gm  :GitMessenger<CR>
-nnoremap <Leader>gl :0Glog<CR>
-nnoremap <Leader>gL :Glog<CR>
-nnoremap <Leader>gd :Gdiff<CR>
-nnoremap <Leader>gD :Gdiffsplit<CR>
-nnoremap <Leader>gs :Gstatus<CR>
-nnoremap <Leader>gc :Gcommit -v -q --signoff<CR>
-nnoremap <Leader>gt :Gcommit -v -q --signoff %:p<CR>
-nnoremap <Leader>gp :Git push<CR>
-nnoremap <Leader>gu :Git push -u<SPACE>
-nnoremap <Leader>gr :Git remote -v<CR>
-nnoremap <Leader>gb :Git branch<SPACE>
-nnoremap <Leader>go :Git checkout<SPACE>
-nnoremap <Leader>g- :Git stash<CR>:e<CR>
-nnoremap <Leader>g+ :Git stash pop<CR>:e<CR>
-nnoremap <Leader>gG :exe ':Ggrep ' . expand('<cword>')<CR>
-nnoremap <Leader>gF :Ggrep<SPACE>
-nnoremap <Leader>gg :GGrep<SPACE>
+nnoremap <Leader>glh :Gina log --opener=split<CR>
+nnoremap <Leader>glv :Gina log --opener=vsplit<CR>
+nnoremap <Leader>gL  :Gina log<SPACE>
+nnoremap <Leader>gdh :Gina diff --opener=split<CR>
+nnoremap <Leader>gdv :Gina diff --opener=split<CR>
+nnoremap <Leader>gD  :Gina diff<SPACE>
+nnoremap <Leader>gs  :Gina! status<CR>
+nnoremap <Leader>ghs :Gina status --opener=split<CR>
+nnoremap <Leader>gvs :Gina status --opener=vsplit<CR>
+nnoremap <Leader>gc  :Gina commit -v -q --signoff<CR>
+nnoremap <Leader>gt  :Gina commit -v -q --signoff %:p<CR>
+nnoremap <Leader>gp  :Gina push<CR>
+nnoremap <Leader>gu  :Gina push -u<SPACE>
+nnoremap <Leader>gr  :Gina remote -v<CR>
+nnoremap <Leader>gb  :Gina! branch<CR>
+nnoremap <Leader>gB  :Gina branch<SPACE>
+nnoremap <Leader>go  :Gina checkout<SPACE>
+nnoremap <Leader>g-  :Gina stash<CR>:e<CR>
+nnoremap <Leader>g+  :Gina stash<SPACE>
+" Git merge tool
 nnoremap <Leader>ml :MergetoolDiffExchangeLeft<CR>
 nnoremap <Leader>mr :MergetoolDiffExchangeRight<CR>
 nnoremap <Leader>mu :MergetoolDiffExchangeUp<CR>
@@ -273,11 +271,20 @@ nnoremap <Leader>mp :diffput<CR>
 " For gitgutter
 nnoremap ]h :GitGutterNextHunk<CR>
 nnoremap [h :GitGutterPrevHunk<CR>
+nnoremap ]c :call NextHunkAllBuffers()<CR>
+nnoremap [c :call PrevHunkAllBuffers()<CR>
 nnoremap <Leader>sh :GitGutterStageHunk<CR>
 nnoremap <Leader>uh :GitGutterUndoHunk<CR>
 nnoremap <Leader>ph :GitGutterPreviewHunk<CR>
 nnoremap <Leader>qh :GitGutterQuickFix<CR>
 nnoremap <Leader>gf :GitGutterFold<CR>
+omap ih <Plug>(GitGutterTextObjectInnerPending)
+omap ah <Plug>(GitGutterTextObjectOuterPending)
+xmap ih <Plug>(GitGutterTextObjectInnerVisual)
+xmap ah <Plug>(GitGutterTextObjectOuterVisual)
+" Jump to sections of diff
+nnoremap { ?^@@<CR>
+nnoremap } /^@@<CR>
 " For Neomake/Neoformat
 nnoremap <Leader>nm  :Neomake<CR>
 nnoremap <Leader>nc  :NeomakeClean<CR>
@@ -538,3 +545,46 @@ function! s:incsearch_config(...) abort
 	\   'is_expr': 0
 	\ }), get(a:, 1, {}))
 endfunction
+
+" Taken from gitgutter README. Cycles through all hunks in all open buffers.
+function! NextHunkAllBuffers()
+  let line = line('.')
+  GitGutterNextHunk
+  if line('.') != line
+    return
+  endif
+
+  let bufnr = bufnr('')
+  while 1
+    bnext
+    if bufnr('') == bufnr
+      return
+    endif
+    if !empty(GitGutterGetHunks())
+      1
+      GitGutterNextHunk
+      return
+    endif
+  endwhile
+endfunction
+
+function! PrevHunkAllBuffers()
+  let line = line('.')
+  GitGutterPrevHunk
+  if line('.') != line
+    return
+  endif
+
+  let bufnr = bufnr('')
+  while 1
+    bprevious
+    if bufnr('') == bufnr
+      return
+    endif
+    if !empty(GitGutterGetHunks())
+      normal! G
+      GitGutterPrevHunk
+      return
+    endif
+  endwhile
+endfunction

nvim/.config/nvim/plugin/statusline.vim

@@ -13,14 +13,6 @@ hi User6 guifg=Gray guibg=Black
 hi User7 guifg=Gray guibg=Black
 hi User8 guifg=DarkYellow guibg=Black
 
-function! GitInfo()
-  let git = fugitive#head()
-  if git != ''
-    return ' '.fugitive#head()
-  else
-    return ''
-endfunction
-
 " https://nest.pijul.com/tae/setup:master/
 function! GetCursorPosition()
   if &buftype == ''
@@ -59,7 +51,6 @@ endfunction
 function! ActiveStatus() abort
   let statusline=""
   let statusline.="%1*\ %{winnr()}\ "
-  let statusline.="%2*\ %{GitInfo()}"
   let statusline.="%4*\ %{GitHunkStatus()}"
   let statusline.="%2*\ %Y\ "
   let statusline.="%3*%<%{GetFileDir()}"
@@ -71,7 +62,6 @@ endfunction
 function! PassiveStatus() abort
   let statusline=""
   let statusline.="%5*\ %{winnr()}\ "
-  let statusline.="%6*\ %{GitInfo()}"
   let statusline.="%8*\ %{GitHunkStatus()}"
   let statusline.="%6*\ %Y\ "
   let statusline.="%7*%<%{GetFileDir()}"