diff --git a/.vimrc b/.vimrc
index af679324..80dac480 100644
--- a/.vimrc
+++ b/.vimrc
@@ -172,6 +172,7 @@ map <S-Right> :tabn<CR>
 map! <C-Z> <Esc>zzi
 map! <C-O> <C-Y>,
 map <C-A> ggVG$"+y
+map <Esc><Esc> :w<CR>
 map <F12> gg=G
 map <C-w> <C-w>w
 imap <C-k> <C-y>,
@@ -205,7 +206,7 @@ func! CompileRunGcc()
 		exec "!g++ % -o %<"
 		exec "!time ./%<"
 	elseif &filetype == 'cpp'
-		exec "!g++ % -o %<"
+		exec "!g++ % -std=c++11 -o %<"
 		exec "!time ./%<"
 	elseif &filetype == 'java' 
 		exec "!javac %" 
@@ -228,7 +229,7 @@ endfunc
 map <F8> :call Rungdb()<CR>
 func! Rungdb()
 	exec "w"
-	exec "!g++ % -g -o %<"
+	exec "!g++ % -std=c++11 -g -o %<"
 	exec "!gdb ./%<"
 endfunc
 
diff --git a/ftplugin/python/pyflakes.vim b/ftplugin/python/pyflakes.vim
index 5a0b44ce..5cb1107e 100755
--- a/ftplugin/python/pyflakes.vim
+++ b/ftplugin/python/pyflakes.vim
@@ -267,7 +267,7 @@ EOF
                 call setqflist(b:qf_list, 'r')
             else
                 " one pyflakes quickfix window for all buffer
-                call setqflist(b:qf_list, '')
+                call setqflist(b:qf_list, ' ')
                 let s:pyflakes_qf = s:GetQuickFixStackCount()
             endif
         endif
diff --git a/update_log.md b/update_log.md
index 888738e5..f75f4b7e 100644
--- a/update_log.md
+++ b/update_log.md
@@ -9,7 +9,7 @@
 ### 2013年5月31日更新
 
 - 增加400多种主题，可以在[colors](colors)目录中找到
-- 可以在[这里](http://vimcolorschemetest.googlecode.com/svn/html/index-c.html)预览
+- 可以在[这里](http://vimcolors.com/)预览
 - 将`color ron`中的`ron`换成你喜欢的主题名字即可
 - 重新打开vim生效