Patch 7.4.834
Problem:    gettabvar() doesn't work after Vim start. (Szymon Wrozynski)
Solution:   Handle first window in tab still being NULL. (Christian Brabandt)
Files:      src/eval.c, src/testdir/test91.in, src/testdir/test91.ok


*** ../vim-7.4.833/src/eval.c   2015-08-13 23:28:38.242878357 +0200
--- src/eval.c  2015-08-25 16:14:37.962043098 +0200
***************
*** 12291,12297 ****
      {
        /* Set tp to be our tabpage, temporarily.  Also set the window to the
         * first window in the tabpage, otherwise the window is not valid. */
!       if (switch_win(&oldcurwin, &oldtabpage, tp->tp_firstwin, tp, TRUE)
                                                                        == OK)
        {
            /* look up the variable */
--- 12291,12298 ----
      {
        /* Set tp to be our tabpage, temporarily.  Also set the window to the
         * first window in the tabpage, otherwise the window is not valid. */
!       if (switch_win(&oldcurwin, &oldtabpage,
!                   tp->tp_firstwin == NULL ? firstwin : tp->tp_firstwin, tp, 
TRUE)
                                                                        == OK)
        {
            /* look up the variable */
*** ../vim-7.4.833/src/testdir/test91.in        2014-09-09 16:13:05.040531695 
+0200
--- src/testdir/test91.in       2015-08-25 16:14:21.978209619 +0200
***************
*** 5,12 ****
  :so small.vim
  :so mbyte.vim
  :"
- :" Test for getbufvar()
  :" Use strings to test for memory leaks.
  :let b:var_num = '1234'
  :let def_num = '5678'
  :$put =string(getbufvar(1, 'var_num'))
--- 5,16 ----
  :so small.vim
  :so mbyte.vim
  :"
  :" Use strings to test for memory leaks.
+ :" First, check that in an empty window, gettabvar() returns the correct value
+ :let t:testvar='abcd'
+ :$put =string(gettabvar(1,'testvar'))
+ :$put =string(gettabvar(1,'testvar'))
+ :" Test for getbufvar()
  :let b:var_num = '1234'
  :let def_num = '5678'
  :$put =string(getbufvar(1, 'var_num'))
*** ../vim-7.4.833/src/testdir/test91.ok        2014-09-09 16:13:05.040531695 
+0200
--- src/testdir/test91.ok       2015-08-25 16:14:21.978209619 +0200
***************
*** 1,4 ****
--- 1,6 ----
  start:
+ 'abcd'
+ 'abcd'
  '1234'
  '1234'
  {'var_num': '1234'}
*** ../vim-7.4.833/src/version.c        2015-08-25 15:39:51.459826645 +0200
--- src/version.c       2015-08-25 16:14:09.318341510 +0200
***************
*** 743,744 ****
--- 743,746 ----
  {   /* Add new patch number below this line */
+ /**/
+     834,
  /**/

-- 
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shall risk arrest, fine, and/or jailing.
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