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fix(api): win_set_config error message for splitting from a float #35650

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Problem: after #34287 nvim_win_set_config no longer errors when attempting to
split from a floating window only if "win" is 0.

Solution: fix the regression, reduce the scope of "parent" and similar checks to
only where it's currently used and add test coverage for the errors.

(cherry picked from commit da39966a3a)
This commit is contained in:
Sean Dewar
2025-09-06 21:22:46 +01:00
committed by github-actions[bot]
parent 0f6a180bcc
commit 5aa6257e8c
2 changed files with 81 additions and 24 deletions
Download Patch File Download Diff File Expand all files Collapse all files

52
src/nvim/api/win_config.c
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@@ -410,25 +410,6 @@ void nvim_win_set_config(Window window, Dict(win_config) *config, Error *err)
if (!parse_win_config(win, config, &fconfig, !was_split || to_split, err)) {
return;
}
win_T *parent = config->win == 0 ? curwin : NULL;
tabpage_T *parent_tp = config->win == 0 ? curtab : NULL;
if (config->win > 0) {
parent = find_window_by_handle(fconfig.window, err);
if (!parent) {
return;
} else if (to_split && parent->w_floating) {
api_set_error(err, kErrorTypeException, "Cannot split a floating window");
return;
}
parent_tp = win_find_tabpage(parent);
// Prevent autocmd window from being moved into another tabpage
if (is_aucmd_win(win) && win_tp != parent_tp) {
api_set_error(err, kErrorTypeException, "Cannot move autocmd win to another tabpage");
return;
}
}
if (was_split && !to_split) {
if (!win_new_float(win, false, fconfig, err)) {
@@ -436,6 +417,34 @@ void nvim_win_set_config(Window window, Dict(win_config) *config, Error *err)
}
redraw_later(win, UPD_NOT_VALID);
} else if (to_split) {
win_T *parent = NULL;
tabpage_T *parent_tp = NULL;
if (config->win == 0) {
parent = curwin;
parent_tp = curtab;
} else if (config->win > 0) {
parent = find_window_by_handle(fconfig.window, err);
if (!parent) {
return;
}
parent_tp = win_find_tabpage(parent);
}
if (parent) {
if (parent->w_floating) {
api_set_error(err, kErrorTypeException, "Cannot split a floating window");
return;
}
if (is_aucmd_win(win) && win_tp != parent_tp) {
api_set_error(err, kErrorTypeException, "Cannot move autocmd window to another tabpage");
return;
}
// Can't move the cmdwin or its old curwin to a different tabpage.
if ((win == cmdwin_win || win == cmdwin_old_curwin) && win_tp != parent_tp) {
api_set_error(err, kErrorTypeException, "%s", e_cmdwin);
return;
}
}
WinSplit old_split = win_split_dir(win);
if (has_vertical && !has_split) {
if (config->vertical) {
@@ -463,11 +472,6 @@ void nvim_win_set_config(Window window, Dict(win_config) *config, Error *err)
if (!check_split_disallowed_err(win, err)) {
return; // error already set
}
// Can't move the cmdwin or its old curwin to a different tabpage.
if ((win == cmdwin_win || win == cmdwin_old_curwin) && parent && parent_tp != win_tp) {
api_set_error(err, kErrorTypeException, "%s", e_cmdwin);
return;
}
bool to_split_ok = false;
// If we are moving curwin to another tabpage, switch windows *before* we remove it from the