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evalwindow.c
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/* vi:set ts=8 sts=4 sw=4 noet:
*
* VIM - Vi IMproved by Bram Moolenaar
*
* Do ":help uganda" in Vim to read copying and usage conditions.
* Do ":help credits" in Vim to see a list of people who contributed.
* See README.txt for an overview of the Vim source code.
*/
/*
* evalwindow.c: Window related builtin functions
*/
#include "vim.h"
#if defined(FEAT_EVAL) || defined(PROTO)
static int
win_getid(typval_T *argvars)
{
int winnr;
win_T *wp;
if (argvars[0].v_type == VAR_UNKNOWN)
return curwin->w_id;
winnr = tv_get_number(&argvars[0]);
if (winnr <= 0)
return 0;
if (argvars[1].v_type == VAR_UNKNOWN)
wp = firstwin;
else
{
tabpage_T *tp;
int tabnr = tv_get_number(&argvars[1]);
FOR_ALL_TABPAGES(tp)
if (--tabnr == 0)
break;
if (tp == NULL)
return -1;
if (tp == curtab)
wp = firstwin;
else
wp = tp->tp_firstwin;
}
for ( ; wp != NULL; wp = wp->w_next)
if (--winnr == 0)
return wp->w_id;
return 0;
}
static void
win_id2tabwin(typval_T *argvars, list_T *list)
{
win_T *wp;
tabpage_T *tp;
int winnr = 1;
int tabnr = 1;
int id = tv_get_number(&argvars[0]);
FOR_ALL_TABPAGES(tp)
{
FOR_ALL_WINDOWS_IN_TAB(tp, wp)
{
if (wp->w_id == id)
{
list_append_number(list, tabnr);
list_append_number(list, winnr);
return;
}
++winnr;
}
++tabnr;
winnr = 1;
}
list_append_number(list, 0);
list_append_number(list, 0);
}
/*
* Return the window pointer of window "id".
*/
win_T *
win_id2wp(int id)
{
return win_id2wp_tp(id, NULL);
}
/*
* Return the window and tab pointer of window "id".
* Returns NULL when not found.
*/
win_T *
win_id2wp_tp(int id, tabpage_T **tpp)
{
win_T *wp;
tabpage_T *tp;
FOR_ALL_TAB_WINDOWS(tp, wp)
if (wp->w_id == id)
{
if (tpp != NULL)
*tpp = tp;
return wp;
}
#ifdef FEAT_PROP_POPUP
// popup windows are in separate lists
FOR_ALL_TABPAGES(tp)
FOR_ALL_POPUPWINS_IN_TAB(tp, wp)
if (wp->w_id == id)
{
if (tpp != NULL)
*tpp = tp;
return wp;
}
FOR_ALL_POPUPWINS(wp)
if (wp->w_id == id)
{
if (tpp != NULL)
*tpp = curtab; // any tabpage would do
return wp;
}
#endif
return NULL;
}
static int
win_id2win(typval_T *argvars)
{
win_T *wp;
int nr = 1;
int id = tv_get_number(&argvars[0]);
FOR_ALL_WINDOWS(wp)
{
if (wp->w_id == id)
return nr;
++nr;
}
return 0;
}
void
win_findbuf(typval_T *argvars, list_T *list)
{
win_T *wp;
tabpage_T *tp;
int bufnr = tv_get_number(&argvars[0]);
FOR_ALL_TAB_WINDOWS(tp, wp)
if (wp->w_buffer->b_fnum == bufnr)
list_append_number(list, wp->w_id);
}
/*
* Find window specified by "vp" in tabpage "tp".
* Returns current window if "vp" is number zero.
* Returns NULL if not found.
*/
win_T *
find_win_by_nr(
typval_T *vp,
tabpage_T *tp) // NULL for current tab page
{
win_T *wp;
int nr = (int)tv_get_number_chk(vp, NULL);
if (nr < 0)
return NULL;
if (nr == 0)
return curwin;
FOR_ALL_WINDOWS_IN_TAB(tp, wp)
{
if (nr >= LOWEST_WIN_ID)
{
if (wp->w_id == nr)
return wp;
}
else if (--nr <= 0)
break;
}
if (nr >= LOWEST_WIN_ID)
{
#ifdef FEAT_PROP_POPUP
// check tab-local popup windows
for (wp = (tp == NULL ? curtab : tp)->tp_first_popupwin;
wp != NULL; wp = wp->w_next)
if (wp->w_id == nr)
return wp;
// check global popup windows
FOR_ALL_POPUPWINS(wp)
if (wp->w_id == nr)
return wp;
#endif
return NULL;
}
return wp;
}
/*
* Find a window: When using a Window ID in any tab page, when using a number
* in the current tab page.
* Returns NULL when not found.
*/
win_T *
find_win_by_nr_or_id(typval_T *vp)
{
int nr = (int)tv_get_number_chk(vp, NULL);
if (nr >= LOWEST_WIN_ID)
return win_id2wp(tv_get_number(vp));
return find_win_by_nr(vp, NULL);
}
/*
* Find window specified by "wvp" in tabpage "tvp".
* Returns the tab page in 'ptp'
*/
win_T *
find_tabwin(
typval_T *wvp, // VAR_UNKNOWN for current window
typval_T *tvp, // VAR_UNKNOWN for current tab page
tabpage_T **ptp)
{
win_T *wp = NULL;
tabpage_T *tp = NULL;
long n;
if (wvp->v_type != VAR_UNKNOWN)
{
if (tvp->v_type != VAR_UNKNOWN)
{
n = (long)tv_get_number(tvp);
if (n >= 0)
tp = find_tabpage(n);
}
else
tp = curtab;
if (tp != NULL)
{
wp = find_win_by_nr(wvp, tp);
if (wp == NULL && wvp->v_type == VAR_NUMBER
&& wvp->vval.v_number != -1)
// A window with the specified number is not found
tp = NULL;
}
}
else
{
wp = curwin;
tp = curtab;
}
if (ptp != NULL)
*ptp = tp;
return wp;
}
/*
* Get the layout of the given tab page for winlayout() and add it to "l".
*/
static void
get_framelayout(frame_T *fr, list_T *l, int outer)
{
frame_T *child;
list_T *fr_list;
list_T *win_list;
if (fr == NULL)
return;
if (outer)
// outermost call from f_winlayout()
fr_list = l;
else
{
fr_list = list_alloc();
if (fr_list == NULL)
return;
if (list_append_list(l, fr_list) == FAIL)
{
vim_free(fr_list);
return;
}
}
if (fr->fr_layout == FR_LEAF)
{
if (fr->fr_win != NULL)
{
list_append_string(fr_list, (char_u *)"leaf", -1);
list_append_number(fr_list, fr->fr_win->w_id);
}
}
else
{
list_append_string(fr_list,
fr->fr_layout == FR_ROW ? (char_u *)"row" : (char_u *)"col", -1);
win_list = list_alloc();
if (win_list == NULL)
return;
if (list_append_list(fr_list, win_list) == FAIL)
{
vim_free(win_list);
return;
}
child = fr->fr_child;
while (child != NULL)
{
get_framelayout(child, win_list, FALSE);
child = child->fr_next;
}
}
}
/*
* Common code for tabpagewinnr() and winnr().
*/
static int
get_winnr(tabpage_T *tp, typval_T *argvar)
{
win_T *twin;
int nr = 1;
win_T *wp;
char_u *arg;
twin = (tp == curtab) ? curwin : tp->tp_curwin;
if (argvar->v_type != VAR_UNKNOWN)
{
int invalid_arg = FALSE;
arg = tv_get_string_chk(argvar);
if (arg == NULL)
nr = 0; // type error; errmsg already given
else if (STRCMP(arg, "$") == 0)
twin = (tp == curtab) ? lastwin : tp->tp_lastwin;
else if (STRCMP(arg, "#") == 0)
{
twin = (tp == curtab) ? prevwin : tp->tp_prevwin;
}
else
{
long count;
char_u *endp;
// Extract the window count (if specified). e.g. winnr('3j')
count = strtol((char *)arg, (char **)&endp, 10);
if (count <= 0)
count = 1; // if count is not specified, default to 1
if (endp != NULL && *endp != '\0')
{
if (STRCMP(endp, "j") == 0)
twin = win_vert_neighbor(tp, twin, FALSE, count);
else if (STRCMP(endp, "k") == 0)
twin = win_vert_neighbor(tp, twin, TRUE, count);
else if (STRCMP(endp, "h") == 0)
twin = win_horz_neighbor(tp, twin, TRUE, count);
else if (STRCMP(endp, "l") == 0)
twin = win_horz_neighbor(tp, twin, FALSE, count);
else
invalid_arg = TRUE;
}
else
invalid_arg = TRUE;
}
if (twin == NULL)
nr = 0;
if (invalid_arg)
{
semsg(_(e_invalid_expression_str), arg);
nr = 0;
}
}
if (nr <= 0)
return 0;
for (wp = (tp == curtab) ? firstwin : tp->tp_firstwin;
wp != twin; wp = wp->w_next)
{
if (wp == NULL)
{
// didn't find it in this tabpage
nr = 0;
break;
}
++nr;
}
return nr;
}
/*
* Returns information about a window as a dictionary.
*/
static dict_T *
get_win_info(win_T *wp, short tpnr, short winnr)
{
dict_T *dict;
dict = dict_alloc();
if (dict == NULL)
return NULL;
// make sure w_botline is valid
validate_botline_win(wp);
dict_add_number(dict, "tabnr", tpnr);
dict_add_number(dict, "winnr", winnr);
dict_add_number(dict, "winid", wp->w_id);
dict_add_number(dict, "height", wp->w_height);
dict_add_number(dict, "winrow", wp->w_winrow + 1);
dict_add_number(dict, "topline", wp->w_topline);
dict_add_number(dict, "botline", wp->w_botline - 1);
#ifdef FEAT_MENU
dict_add_number(dict, "winbar", wp->w_winbar_height);
#endif
dict_add_number(dict, "width", wp->w_width);
dict_add_number(dict, "wincol", wp->w_wincol + 1);
dict_add_number(dict, "textoff", win_col_off(wp));
dict_add_number(dict, "bufnr", wp->w_buffer->b_fnum);
dict_add_number(dict, "leftcol", wp->w_leftcol);
#ifdef FEAT_TERMINAL
dict_add_number(dict, "terminal", bt_terminal(wp->w_buffer));
#endif
#ifdef FEAT_QUICKFIX
dict_add_number(dict, "quickfix", bt_quickfix(wp->w_buffer));
dict_add_number(dict, "loclist",
(bt_quickfix(wp->w_buffer) && wp->w_llist_ref != NULL));
#endif
// Add a reference to window variables
dict_add_dict(dict, "variables", wp->w_vars);
return dict;
}
/*
* Returns information (variables, options, etc.) about a tab page
* as a dictionary.
*/
static dict_T *
get_tabpage_info(tabpage_T *tp, int tp_idx)
{
win_T *wp;
dict_T *dict;
list_T *l;
dict = dict_alloc();
if (dict == NULL)
return NULL;
dict_add_number(dict, "tabnr", tp_idx);
l = list_alloc();
if (l != NULL)
{
FOR_ALL_WINDOWS_IN_TAB(tp, wp)
list_append_number(l, (varnumber_T)wp->w_id);
dict_add_list(dict, "windows", l);
}
// Make a reference to tabpage variables
dict_add_dict(dict, "variables", tp->tp_vars);
return dict;
}
/*
* "gettabinfo()" function
*/
void
f_gettabinfo(typval_T *argvars, typval_T *rettv)
{
tabpage_T *tp, *tparg = NULL;
dict_T *d;
int tpnr = 0;
if (rettv_list_alloc(rettv) == FAIL)
return;
if (in_vim9script() && check_for_opt_number_arg(argvars, 0) == FAIL)
return;
if (argvars[0].v_type != VAR_UNKNOWN)
{
// Information about one tab page
tparg = find_tabpage((int)tv_get_number_chk(&argvars[0], NULL));
if (tparg == NULL)
return;
}
// Get information about a specific tab page or all tab pages
FOR_ALL_TABPAGES(tp)
{
tpnr++;
if (tparg != NULL && tp != tparg)
continue;
d = get_tabpage_info(tp, tpnr);
if (d != NULL)
list_append_dict(rettv->vval.v_list, d);
if (tparg != NULL)
return;
}
}
/*
* "getwininfo()" function
*/
void
f_getwininfo(typval_T *argvars, typval_T *rettv)
{
tabpage_T *tp;
win_T *wp = NULL, *wparg = NULL;
dict_T *d;
short tabnr = 0, winnr;
if (rettv_list_alloc(rettv) == FAIL)
return;
if (in_vim9script() && check_for_opt_number_arg(argvars, 0) == FAIL)
return;
if (argvars[0].v_type != VAR_UNKNOWN)
{
wparg = win_id2wp(tv_get_number(&argvars[0]));
if (wparg == NULL)
return;
}
// Collect information about either all the windows across all the tab
// pages or one particular window.
FOR_ALL_TABPAGES(tp)
{
tabnr++;
winnr = 0;
FOR_ALL_WINDOWS_IN_TAB(tp, wp)
{
winnr++;
if (wparg != NULL && wp != wparg)
continue;
d = get_win_info(wp, tabnr, winnr);
if (d != NULL)
list_append_dict(rettv->vval.v_list, d);
if (wparg != NULL)
// found information about a specific window
return;
}
}
#ifdef FEAT_PROP_POPUP
if (wparg != NULL)
{
tabnr = 0;
FOR_ALL_TABPAGES(tp)
{
tabnr++;
FOR_ALL_POPUPWINS_IN_TAB(tp, wp)
if (wp == wparg)
break;
}
d = get_win_info(wparg, tp == NULL ? 0 : tabnr, 0);
if (d != NULL)
list_append_dict(rettv->vval.v_list, d);
}
#endif
}
/*
* "getwinpos({timeout})" function
*/
void
f_getwinpos(typval_T *argvars UNUSED, typval_T *rettv)
{
int x = -1;
int y = -1;
if (rettv_list_alloc(rettv) == FAIL)
return;
if (in_vim9script() && check_for_opt_number_arg(argvars, 0) == FAIL)
return;
#if defined(FEAT_GUI) \
|| (defined(HAVE_TGETENT) && defined(FEAT_TERMRESPONSE)) \
|| defined(MSWIN)
{
varnumber_T timeout = 100;
if (argvars[0].v_type != VAR_UNKNOWN)
timeout = tv_get_number(&argvars[0]);
(void)ui_get_winpos(&x, &y, timeout);
}
#endif
list_append_number(rettv->vval.v_list, (varnumber_T)x);
list_append_number(rettv->vval.v_list, (varnumber_T)y);
}
/*
* "getwinposx()" function
*/
void
f_getwinposx(typval_T *argvars UNUSED, typval_T *rettv)
{
rettv->vval.v_number = -1;
#if defined(FEAT_GUI) \
|| (defined(HAVE_TGETENT) && defined(FEAT_TERMRESPONSE)) \
|| defined(MSWIN)
{
int x, y;
if (ui_get_winpos(&x, &y, 100) == OK)
rettv->vval.v_number = x;
}
#endif
}
/*
* "getwinposy()" function
*/
void
f_getwinposy(typval_T *argvars UNUSED, typval_T *rettv)
{
rettv->vval.v_number = -1;
#if defined(FEAT_GUI) \
|| (defined(HAVE_TGETENT) && defined(FEAT_TERMRESPONSE)) \
|| defined(MSWIN)
{
int x, y;
if (ui_get_winpos(&x, &y, 100) == OK)
rettv->vval.v_number = y;
}
#endif
}
/*
* "tabpagenr()" function
*/
void
f_tabpagenr(typval_T *argvars UNUSED, typval_T *rettv)
{
int nr = 1;
char_u *arg;
if (in_vim9script() && check_for_opt_string_arg(argvars, 0) == FAIL)
return;
if (argvars[0].v_type != VAR_UNKNOWN)
{
arg = tv_get_string_chk(&argvars[0]);
nr = 0;
if (arg != NULL)
{
if (STRCMP(arg, "$") == 0)
nr = tabpage_index(NULL) - 1;
else if (STRCMP(arg, "#") == 0)
nr = valid_tabpage(lastused_tabpage) ?
tabpage_index(lastused_tabpage) : 0;
else
semsg(_(e_invalid_expression_str), arg);
}
}
else
nr = tabpage_index(curtab);
rettv->vval.v_number = nr;
}
/*
* "tabpagewinnr()" function
*/
void
f_tabpagewinnr(typval_T *argvars UNUSED, typval_T *rettv)
{
int nr = 1;
tabpage_T *tp;
if (in_vim9script()
&& (check_for_number_arg(argvars, 0) == FAIL
|| check_for_opt_string_arg(argvars, 1) == FAIL))
return;
tp = find_tabpage((int)tv_get_number(&argvars[0]));
if (tp == NULL)
nr = 0;
else
nr = get_winnr(tp, &argvars[1]);
rettv->vval.v_number = nr;
}
/*
* "win_execute()" function
*/
void
f_win_execute(typval_T *argvars, typval_T *rettv)
{
int id;
tabpage_T *tp;
win_T *wp;
switchwin_T switchwin;
// Return an empty string if something fails.
rettv->v_type = VAR_STRING;
rettv->vval.v_string = NULL;
if (in_vim9script()
&& (check_for_number_arg(argvars, 0) == FAIL
|| check_for_string_or_list_arg(argvars, 1) == FAIL
|| check_for_opt_string_arg(argvars, 2) == FAIL))
return;
id = (int)tv_get_number(argvars);
wp = win_id2wp_tp(id, &tp);
if (wp == NULL || tp == NULL)
return;
pos_T curpos = wp->w_cursor;
char_u cwd[MAXPATHL];
int cwd_status = FAIL;
#ifdef FEAT_AUTOCHDIR
char_u autocwd[MAXPATHL];
int apply_acd = FALSE;
#endif
// Getting and setting directory can be slow on some systems, only do
// this when the current or target window/tab have a local directory or
// 'acd' is set.
if (curwin != wp
&& (curwin->w_localdir != NULL
|| wp->w_localdir != NULL
|| (curtab != tp
&& (curtab->tp_localdir != NULL
|| tp->tp_localdir != NULL))
#ifdef FEAT_AUTOCHDIR
|| p_acd
#endif
))
cwd_status = mch_dirname(cwd, MAXPATHL);
#ifdef FEAT_AUTOCHDIR
// If 'acd' is set, check we are using that directory. If yes, then
// apply 'acd' afterwards, otherwise restore the current directory.
if (cwd_status == OK && p_acd)
{
do_autochdir();
apply_acd = mch_dirname(autocwd, MAXPATHL) == OK
&& STRCMP(cwd, autocwd) == 0;
}
#endif
if (switch_win_noblock(&switchwin, wp, tp, TRUE) == OK)
{
check_cursor();
execute_common(argvars, rettv, 1);
}
restore_win_noblock(&switchwin, TRUE);
#ifdef FEAT_AUTOCHDIR
if (apply_acd)
do_autochdir();
else
#endif
if (cwd_status == OK)
mch_chdir((char *)cwd);
// Update the status line if the cursor moved.
if (win_valid(wp) && !EQUAL_POS(curpos, wp->w_cursor))
wp->w_redr_status = TRUE;
// In case the command moved the cursor or changed the Visual area,
// check it is valid.
check_cursor();
if (VIsual_active)
check_pos(curbuf, &VIsual);
}
/*
* "win_findbuf()" function
*/
void
f_win_findbuf(typval_T *argvars, typval_T *rettv)
{
if (in_vim9script() && check_for_number_arg(argvars, 0) == FAIL)
return;
if (rettv_list_alloc(rettv) == OK)
win_findbuf(argvars, rettv->vval.v_list);
}
/*
* "win_getid()" function
*/
void
f_win_getid(typval_T *argvars, typval_T *rettv)
{
if (in_vim9script()
&& (check_for_opt_number_arg(argvars, 0) == FAIL
|| (argvars[0].v_type != VAR_UNKNOWN
&& check_for_opt_number_arg(argvars, 1) == FAIL)))
return;
rettv->vval.v_number = win_getid(argvars);
}
/*
* "win_gotoid()" function
*/
void
f_win_gotoid(typval_T *argvars, typval_T *rettv)
{
win_T *wp;
tabpage_T *tp;
int id;
if (in_vim9script() && check_for_number_arg(argvars, 0) == FAIL)
return;
id = tv_get_number(&argvars[0]);
if (curwin->w_id == id)
{
// Nothing to do.
rettv->vval.v_number = 1;
return;
}
if (text_or_buf_locked())
return;
#if defined(FEAT_PROP_POPUP) && defined(FEAT_TERMINAL)
if (popup_is_popup(curwin) && curbuf->b_term != NULL)
{
emsg(_(e_not_allowed_for_terminal_in_popup_window));
return;
}
#endif
FOR_ALL_TAB_WINDOWS(tp, wp)
if (wp->w_id == id)
{
// When jumping to another buffer stop Visual mode.
if (VIsual_active && wp->w_buffer != curbuf)
end_visual_mode();
goto_tabpage_win(tp, wp);
rettv->vval.v_number = 1;
return;
}
}
/*
* "win_id2tabwin()" function
*/
void
f_win_id2tabwin(typval_T *argvars, typval_T *rettv)
{
if (in_vim9script() && check_for_number_arg(argvars, 0) == FAIL)
return;
if (rettv_list_alloc(rettv) == OK)
win_id2tabwin(argvars, rettv->vval.v_list);
}
/*
* "win_id2win()" function
*/
void
f_win_id2win(typval_T *argvars, typval_T *rettv)
{
if (in_vim9script() && check_for_number_arg(argvars, 0) == FAIL)
return;
rettv->vval.v_number = win_id2win(argvars);
}
/*
* "win_move_separator()" function
*/
void
f_win_move_separator(typval_T *argvars, typval_T *rettv)
{
win_T *wp;
int offset;
rettv->vval.v_number = FALSE;
if (in_vim9script()
&& (check_for_number_arg(argvars, 0) == FAIL
|| check_for_number_arg(argvars, 1) == FAIL))
return;
wp = find_win_by_nr_or_id(&argvars[0]);
if (wp == NULL || win_valid_popup(wp))
return;
if (!win_valid(wp))
{
emsg(_(e_cannot_resize_window_in_another_tab_page));
return;
}
offset = (int)tv_get_number(&argvars[1]);
win_drag_vsep_line(wp, offset);
rettv->vval.v_number = TRUE;
}
/*
* "win_move_statusline()" function
*/
void
f_win_move_statusline(typval_T *argvars, typval_T *rettv)
{
win_T *wp;
int offset;
rettv->vval.v_number = FALSE;
if (in_vim9script()
&& (check_for_number_arg(argvars, 0) == FAIL
|| check_for_number_arg(argvars, 1) == FAIL))
return;
wp = find_win_by_nr_or_id(&argvars[0]);
if (wp == NULL || win_valid_popup(wp))
return;
if (!win_valid(wp))
{
emsg(_(e_cannot_resize_window_in_another_tab_page));
return;
}
offset = (int)tv_get_number(&argvars[1]);
win_drag_status_line(wp, offset);
rettv->vval.v_number = TRUE;
}
/*
* "win_screenpos()" function
*/
void
f_win_screenpos(typval_T *argvars, typval_T *rettv)
{
win_T *wp;
if (rettv_list_alloc(rettv) == FAIL)
return;
if (in_vim9script() && check_for_number_arg(argvars, 0) == FAIL)
return;
wp = find_win_by_nr_or_id(&argvars[0]);
list_append_number(rettv->vval.v_list, wp == NULL ? 0 : wp->w_winrow + 1);
list_append_number(rettv->vval.v_list, wp == NULL ? 0 : wp->w_wincol + 1);
}
/*
* "win_splitmove()" function
*/
void
f_win_splitmove(typval_T *argvars, typval_T *rettv)
{
win_T *wp, *targetwin;
win_T *oldwin = curwin;
int flags = 0, size = 0;
rettv->vval.v_number = -1;
if (in_vim9script()
&& (check_for_number_arg(argvars, 0) == FAIL
|| check_for_number_arg(argvars, 1) == FAIL
|| check_for_opt_dict_arg(argvars, 2) == FAIL))
return;
wp = find_win_by_nr_or_id(&argvars[0]);
targetwin = find_win_by_nr_or_id(&argvars[1]);
if (wp == NULL || targetwin == NULL || wp == targetwin
|| !win_valid(wp) || !win_valid(targetwin)
|| win_valid_popup(wp) || win_valid_popup(targetwin))
{
emsg(_(e_invalid_window_number));
return;
}
if (argvars[2].v_type != VAR_UNKNOWN)
{
dict_T *d;
dictitem_T *di;
if (check_for_nonnull_dict_arg(argvars, 2) == FAIL)
return;
d = argvars[2].vval.v_dict;
if (dict_get_bool(d, "vertical", FALSE))
flags |= WSP_VERT;
if ((di = dict_find(d, (char_u *)"rightbelow", -1)) != NULL)