Patch 7.4.556
Problem:    Failed commands in Python interface not handled correctly.
Solution:   Restore window and buffer on failure.
Files:      src/if_py_both.h


*** ../vim-7.4.555/src/if_py_both.h     2014-08-29 13:49:48.678436915 +0200
--- src/if_py_both.h    2014-09-19 14:21:33.474404353 +0200
***************
*** 3172,3177 ****
--- 3172,3178 ----
            if (switch_win(&save_curwin, &save_curtab, (win_T *)from,
                              win_find_tabpage((win_T *)from), FALSE) == FAIL)
            {
+               restore_win(save_curwin, save_curtab, TRUE);
                if (VimTryEnd())
                    return -1;
                PyErr_SET_VIM(N_("problem while switching windows"));
***************
*** 4032,4040 ****
      win_T     *wp;
      tabpage_T *tp;
  
!     if (find_win_for_buf(buf, &wp, &tp) == FAIL
!           || switch_win(save_curwinp, save_curtabp, wp, tp, TRUE) == FAIL)
        switch_buffer(save_curbufp, buf);
  }
  
      static void
--- 4033,4045 ----
      win_T     *wp;
      tabpage_T *tp;
  
!     if (find_win_for_buf(buf, &wp, &tp) == FAIL)
        switch_buffer(save_curbufp, buf);
+     else if (switch_win(save_curwinp, save_curtabp, wp, tp, TRUE) == FAIL)
+     {
+       restore_win(*save_curwinp, *save_curtabp, TRUE);
+       switch_buffer(save_curbufp, buf);
+     }
  }
  
      static void
*** ../vim-7.4.555/src/version.c        2014-12-17 14:42:42.990240206 +0100
--- src/version.c       2014-12-17 14:44:33.304877367 +0100
***************
*** 743,744 ****
--- 743,746 ----
  {   /* Add new patch number below this line */
+ /**/
+     556,
  /**/

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