Patch 8.2.1563
Problem:    Vim9: error when using '%" with setbufvar() or getbufvar().
Solution:   Use tv_get_buf_from_arg(). (closes #6816)
Files:      src/evalvars.c, src/testdir/test_vim9_func.vim


*** ../vim-8.2.1562/src/evalvars.c      2020-08-29 13:39:12.578557657 +0200
--- src/evalvars.c      2020-09-01 23:15:05.231625063 +0200
***************
*** 3662,3671 ****
      dictitem_T        *v;
      int               done = FALSE;
  
-     (void)tv_get_number(&argvars[0]);     // issue errmsg if type error
      varname = tv_get_string_chk(&argvars[1]);
!     ++emsg_off;
!     buf = tv_get_buf(&argvars[0], FALSE);
  
      rettv->v_type = VAR_STRING;
      rettv->vval.v_string = NULL;
--- 3662,3669 ----
      dictitem_T        *v;
      int               done = FALSE;
  
      varname = tv_get_string_chk(&argvars[1]);
!     buf = tv_get_buf_from_arg(&argvars[0]);
  
      rettv->v_type = VAR_STRING;
      rettv->vval.v_string = NULL;
***************
*** 3717,3724 ****
      if (!done && argvars[2].v_type != VAR_UNKNOWN)
        // use the default value
        copy_tv(&argvars[2], rettv);
- 
-     --emsg_off;
  }
  
  /*
--- 3715,3720 ----
***************
*** 3789,3797 ****
  
      if (check_secure())
        return;
-     (void)tv_get_number(&argvars[0]);     // issue errmsg if type error
      varname = tv_get_string_chk(&argvars[1]);
!     buf = tv_get_buf(&argvars[0], FALSE);
      varp = &argvars[2];
  
      if (buf != NULL && varname != NULL && varp != NULL)
--- 3785,3792 ----
  
      if (check_secure())
        return;
      varname = tv_get_string_chk(&argvars[1]);
!     buf = tv_get_buf_from_arg(&argvars[0]);
      varp = &argvars[2];
  
      if (buf != NULL && varname != NULL && varp != NULL)
*** ../vim-8.2.1562/src/testdir/test_vim9_func.vim      2020-09-01 
23:05:57.812835372 +0200
--- src/testdir/test_vim9_func.vim      2020-09-01 23:11:26.436140812 +0200
***************
*** 1426,1431 ****
--- 1426,1434 ----
     settabwinvar(1, 1, '&ts', 15)
     assert_equal(15, &ts)
     setlocal ts=8
+ 
+    setbufvar('%', 'myvar', 123)
+    assert_equal(123, getbufvar('%', 'myvar'))
  enddef
  
  def Test_setreg()
*** ../vim-8.2.1562/src/version.c       2020-09-01 23:05:57.812835372 +0200
--- src/version.c       2020-09-01 23:16:18.863445525 +0200
***************
*** 756,757 ****
--- 756,759 ----
  {   /* Add new patch number below this line */
+ /**/
+     1563,
  /**/

-- 
A vacation is a period of travel during which you find that you
took twice as many clothes and half as much money as you needed.

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