From 39983fbd30c7d67b35ff317aaef0be5c1ba558ca Mon Sep 17 00:00:00 2001
From: David Briscoe <idbrii@gmail.com>
Date: Mon, 30 Jul 2018 10:06:08 -0700
Subject: [PATCH] Add refresh command

Stores GV's options, closes tab, re-runs GV.

Doesn't maintain current diff window, but does maintain current line
position. Seems like a good trade-off for a simpler solution.

Mapped to 'r' like fugitive's :Gstatus. (Instead of 'u' like gitv.)

Implemented as a plug because I personally prefer C-l for refresh-like
actions (and have already mapped r to cycle refs like gitv).

Store restore variables in buffer instead of tab because if you :GV and
then :wincmd T, then the t: variables disappear. I can't think of a way
we'd lose the buffer. We create the new buffer with the old buffer's
arguments, so they're still pointing to the right ones.
---
 README.md     |  1 +
 plugin/gv.vim | 22 ++++++++++++++++++++++
 2 files changed, 23 insertions(+)

diff --git a/README.md b/README.md
index 10e97a4..1fcb202 100644
--- a/README.md
+++ b/README.md
@@ -42,6 +42,7 @@ selected lines.
 - `gb` for `:GBrowse`
 - `]]` and `[[` to move between commits
 - `.` to start command-line with `:Git [CURSOR] SHA` à la fugitive
+- `r` to refresh git state
 - `q` or `gq` to close
 
 Customization
diff --git a/plugin/gv.vim b/plugin/gv.vim
index 8e91611..9de8d4b 100644
--- a/plugin/gv.vim
+++ b/plugin/gv.vim
@@ -126,6 +126,8 @@ function! s:dot()
 endfunction
 
 function! s:maps()
+  nnoremap <buffer> <Plug>(gv-refresh) :<c-u>call <sid>refresh()<cr>
+
   nnoremap <silent> <buffer> q    :$wincmd w <bar> close<cr>
   nnoremap <silent> <buffer> <nowait> gq :$wincmd w <bar> close<cr>
   nnoremap <silent> <buffer> gb   :call <sid>gbrowse()<cr>
@@ -317,6 +319,13 @@ function! s:gv(bang, visual, line1, line2, args) abort
       call s:list(log_opts)
       call FugitiveDetect(@#)
     endif
+    let b:gv_opts = {
+          \ 'bang' : a:bang,
+          \ 'visual' : a:visual,
+          \ 'line1' : a:line1,
+          \ 'line2' : a:line2,
+          \ 'args' : a:args,
+          \ }
   catch
     return s:warn(v:exception)
   finally
@@ -326,4 +335,17 @@ function! s:gv(bang, visual, line1, line2, args) abort
   endtry
 endfunction
 
+function! s:refresh() abort
+  let lazyredraw_bak = &lazyredraw
+  let &lazyredraw = 1
+
+  let win = winsaveview()
+  let old_tab = tabpagenr()
+  call s:gv(b:gv_opts.bang, b:gv_opts.visual, b:gv_opts.line1, b:gv_opts.line2, b:gv_opts.args)
+  exec 'tabclose '. old_tab
+  call winrestview(win)
+
+  let &lazyredraw = lazyredraw_bak
+endfunction
+
 command! -bang -nargs=* -range=0 -complete=customlist,fugitive#CompleteObject GV call s:gv(<bang>0, <count>, <line1>, <line2>, <q-args>)