From 3133fce524b2bce7ef5d1a5b2460235e22e1619b Mon Sep 17 00:00:00 2001
From: Bailey Ling <bling@live.ca>
Date: Wed, 11 Sep 2013 21:13:51 +0000
Subject: [PATCH 1/2] Improve detection performance (#67)

---
 autoload/sy/repo.vim | 16 +++++++++++++++-
 1 file changed, 15 insertions(+), 1 deletion(-)

diff --git a/autoload/sy/repo.vim b/autoload/sy/repo.vim
index 43b7a6b..12853f7 100644
--- a/autoload/sy/repo.vim
+++ b/autoload/sy/repo.vim
@@ -18,9 +18,23 @@ endif
 
 let s:diffoptions = get(g:, 'signify_diffoptions', {})
 
+let s:vcs_list = get(g:, 'signify_vcs_list', [])
+if empty(s:vcs_list)
+  if executable('git')     | call add(s:vcs_list, 'git')      | endif
+  if executable('hg')      | call add(s:vcs_list, 'hg')       | endif
+  if executable('svn')     | call add(s:vcs_list, 'svn')      | endif
+  if executable('darcs')   | call add(s:vcs_list, 'darcs')    | endif
+  if executable('bzr')     | call add(s:vcs_list, 'bzr')      | endif
+  if executable('fossil')  | call add(s:vcs_list, 'fossil')   | endif
+  if executable('cvs')     | call add(s:vcs_list, 'cvs')      | endif
+  if executable('rcsdiff') | call add(s:vcs_list, 'rcs')      | endif
+  if executable('accurev') | call add(s:vcs_list, 'accurev')  | endif
+  if executable('p4')      | call add(s:vcs_list, 'perforce') | endif
+endif
+
 " Function: #detect {{{1
 function! sy#repo#detect(path) abort
-  for type in get(g:, 'signify_vcs_list', [ 'git', 'hg', 'svn', 'darcs', 'bzr', 'fossil', 'cvs', 'rcs', 'accurev', 'perforce' ])
+  for type in s:vcs_list
     let diff = sy#repo#get_diff_{type}(a:path)
     if !empty(diff)
       return [ diff, type ]

From a2b96beff77a10e73c76c83870bc766b7eae0297 Mon Sep 17 00:00:00 2001
From: Marco Hinz <mh.codebro@gmail.com>
Date: Thu, 12 Sep 2013 00:16:09 +0200
Subject: [PATCH 2/2] Refactor VCS detection

---
 autoload/sy/repo.vim | 29 +++++++++++++++--------------
 1 file changed, 15 insertions(+), 14 deletions(-)

diff --git a/autoload/sy/repo.vim b/autoload/sy/repo.vim
index 12853f7..d7a9c98 100644
--- a/autoload/sy/repo.vim
+++ b/autoload/sy/repo.vim
@@ -6,6 +6,8 @@ endif
 let b:autoloaded_sy_repo = 1
 
 " Init: values {{{1
+let s:diffoptions = get(g:, 'signify_diffoptions', {})
+
 if !empty(get(g:, 'signify_difftool'))
   let s:difftool = g:signify_difftool
 else
@@ -16,21 +18,20 @@ else
   let s:difftool = 'diff'
 endif
 
-let s:diffoptions = get(g:, 'signify_diffoptions', {})
+let s:vcs_dict = {
+      \ 'git':      'git',
+      \ 'hg':       'hg',
+      \ 'svn':      'svn',
+      \ 'darcs':    'darcs',
+      \ 'bzr':      'bzr',
+      \ 'fossil':   'fossil',
+      \ 'cvs':      'cvs',
+      \ 'rcs':      'rcsdiff',
+      \ 'accurev':  'accurev',
+      \ 'perforce': 'p4'
+      \ }
 
-let s:vcs_list = get(g:, 'signify_vcs_list', [])
-if empty(s:vcs_list)
-  if executable('git')     | call add(s:vcs_list, 'git')      | endif
-  if executable('hg')      | call add(s:vcs_list, 'hg')       | endif
-  if executable('svn')     | call add(s:vcs_list, 'svn')      | endif
-  if executable('darcs')   | call add(s:vcs_list, 'darcs')    | endif
-  if executable('bzr')     | call add(s:vcs_list, 'bzr')      | endif
-  if executable('fossil')  | call add(s:vcs_list, 'fossil')   | endif
-  if executable('cvs')     | call add(s:vcs_list, 'cvs')      | endif
-  if executable('rcsdiff') | call add(s:vcs_list, 'rcs')      | endif
-  if executable('accurev') | call add(s:vcs_list, 'accurev')  | endif
-  if executable('p4')      | call add(s:vcs_list, 'perforce') | endif
-endif
+let s:vcs_list = values(filter(s:vcs_dict, 'executable(v:key)'))
 
 " Function: #detect {{{1
 function! sy#repo#detect(path) abort