From 64a6dbd5d8841a3153b6257ada3e5d46de195e4a Mon Sep 17 00:00:00 2001
From: albfan <albertofanjul@gmail.com>
Date: Tue, 8 Dec 2015 13:40:10 +0100
Subject: [PATCH] Add bang option to SignifyToggleFold

Without bang open folds on a new tab, with it on current buffer
---
 autoload/sy/fold.vim | 32 +++++++++++++++++++++++---------
 doc/signify.txt      |  8 ++++++++
 plugin/signify.vim   | 16 ++++++++--------
 3 files changed, 39 insertions(+), 17 deletions(-)

diff --git a/autoload/sy/fold.vim b/autoload/sy/fold.vim
index ba4b3c1..1e653a7 100644
--- a/autoload/sy/fold.vim
+++ b/autoload/sy/fold.vim
@@ -32,29 +32,43 @@ function! SignifyFoldText()
 endfunction
 
 " Function: #do {{{1
-function! sy#fold#do() abort
+function! sy#fold#do(bang) abort
   if !exists('b:sy')
     echomsg 'signify: I cannot detect any changes!'
     return
   endif
 
+  if empty(a:bang)
+    tabedit %
+  endif
+
   let [s:context0, s:context1] = get(g:, 'signify_fold_context', [3, 8])
   let s:levels = s:get_levels(s:get_lines())
 
   set foldexpr=SignifyFoldExpr(v:lnum)
   set foldtext=SignifyFoldText()
-  let g:old_fdm=&foldmethod
+  if empty(a:bang)
+    if ! empty(get(g:, 'old_fdm', ''))
+      unlet g:old_fdm
+    endif
+  else
+    let g:old_fdm=&foldmethod
+  endif
   set foldmethod=expr
   set foldlevel=0
   let g:signify_fold = 1
 endfunction
 
 function! sy#fold#disable() "abort
-  let &foldmethod=g:old_fdm
-  try
-    normal zE
-  catch
-  endtry
+  if empty(get(g:, 'old_fdm', '')) && get(g:, 'signify_fold')
+    tabclose
+  else
+    let &foldmethod=g:old_fdm
+    try
+      normal zE
+    catch
+    endtry
+  endif
   let g:signify_fold = 0
 endfunction
 
@@ -76,11 +90,11 @@ function! s:get_lines() abort
 endfunction
 
 " Function: #fold_toggle {{{1
-function! sy#fold#toggle() abort
+function! sy#fold#toggle(bang) abort
   if get(g:, 'signify_fold')
     call sy#fold#disable()
   else
-    call sy#fold#do()
+    call sy#fold#do(a:bang)
   endif
 
   redraw!
diff --git a/doc/signify.txt b/doc/signify.txt
index 95a4633..8e0035d 100644
--- a/doc/signify.txt
+++ b/doc/signify.txt
@@ -323,6 +323,14 @@ Toggle the plugin for the current buffer only.
 <
 Toggle line highlighting for lines containing changes.
 
+------------------------------------------------------------------------------
+                                               *signify-:SignifyToggleFold*
+>
+    :SignifyToggleFold
+<
+Toggle folding for lines without changes. Using <bang> does on current buffer,
+without it on new tab.
+
 ------------------------------------------------------------------------------
                                                        *signify-:SignifyRefresh*
 >
diff --git a/plugin/signify.vim b/plugin/signify.vim
index 0b587e3..84acbb6 100644
--- a/plugin/signify.vim
+++ b/plugin/signify.vim
@@ -38,14 +38,14 @@ augroup END
 
 " Init: commands {{{1
 
-command! -nargs=0 -bar SignifyDebug           call sy#debug#list_active_buffers()
-command! -nargs=0 -bar SignifyDebugDiff       call sy#debug#verbose_diff_cmd()
-command! -nargs=0 -bar SignifyDebugUnknown    call sy#repo#debug_detection()
-command! -nargs=0 -bar SignifyFold            call sy#fold#do()
-command! -nargs=0 -bar SignifyRefresh         call sy#util#refresh_windows()
-command! -nargs=0 -bar SignifyToggle          call sy#toggle()
-command! -nargs=0 -bar SignifyToggleHighlight call sy#highlight#line_toggle()
-command! -nargs=0 -bar SignifyToggleFold      call sy#fold#toggle()
+command! -nargs=0 -bar       SignifyDebug           call sy#debug#list_active_buffers()
+command! -nargs=0 -bar       SignifyDebugDiff       call sy#debug#verbose_diff_cmd()
+command! -nargs=0 -bar       SignifyDebugUnknown    call sy#repo#debug_detection()
+command! -nargs=0 -bar       SignifyFold            call sy#fold#do()
+command! -nargs=0 -bar       SignifyRefresh         call sy#util#refresh_windows()
+command! -nargs=0 -bar       SignifyToggle          call sy#toggle()
+command! -nargs=0 -bar       SignifyToggleHighlight call sy#highlight#line_toggle()
+command! -nargs=0 -bar -bang SignifyToggleFold      call sy#fold#toggle(<q-bang>)
 
 " Init: mappings {{{1