Add StripTrailingWhitespace function

vimrc

@@ -113,6 +113,16 @@ endfunction
 
 "}
 
+" Remove trailing white spaces
+function StripTrailingWhitespace()
+  if !&binary && &filetype != 'diff'
+    normal mz
+    normal Hmy
+    %s/\s\+$//e
+    normal 'yz<CR>
+    normal `z
+  endif
+endfunction
 
 " C/C++ specific settings
 autocmd FileType c,cpp,cc  set cindent comments=sr:/*,mb:*,el:*/,:// cino=>s,e0,n0,f0,{0,}0,^-1s,:0,=s,g0,h1s,p2,t0,+2,(2,)20,*30