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vim-patch:9.1.0719: Resetting cell widths can make 'listchars' or 'fillchars' invalid (#30289)

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Problem:  Resetting cell widths can make 'listchars' or 'fillchars'
          invalid.
Solution: Check for conflicts when resetting cell widths (zeertzjq).

closes: vim/vim#15629

66f65a46c5
This commit is contained in:
zeertzjq
2024-09-07 07:36:51 +08:00
committed by GitHub
parent 439d031742
commit 738a84de09
2 changed files with 21 additions and 14 deletions
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23
src/nvim/mbyte.c
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@@ -2925,17 +2925,17 @@ void f_setcellwidths(typval_T *argvars, typval_T *rettv, EvalFuncData fptr)
emsg(_(e_listreq));
return;
}
const list_T *const l = argvars[0].vval.v_list;
if (tv_list_len(l) == 0) {
cw_interval_T *table = NULL;
const size_t table_size = (size_t)tv_list_len(l);
if (table_size == 0) {
// Clearing the table.
xfree(cw_table);
cw_table = NULL;
cw_table_size = 0;
goto done;
goto update;
}
// Note: use list_T instead of listitem_T so that TV_LIST_ITEM_NEXT can be used properly below.
const list_T **ptrs = xmalloc(sizeof(const list_T *) * (size_t)tv_list_len(l));
const list_T **ptrs = xmalloc(sizeof(const list_T *) * table_size);
// Check that all entries are a list with three numbers, the range is
// valid and the cell width is valid.
@@ -2987,12 +2987,12 @@ void f_setcellwidths(typval_T *argvars, typval_T *rettv, EvalFuncData fptr)
});
// Sort the list on the first number.
qsort((void *)ptrs, (size_t)tv_list_len(l), sizeof(const list_T *), tv_nr_compare);
qsort((void *)ptrs, table_size, sizeof(const list_T *), tv_nr_compare);
cw_interval_T *table = xmalloc(sizeof(cw_interval_T) * (size_t)tv_list_len(l));
table = xmalloc(sizeof(cw_interval_T) * table_size);
// Store the items in the new table.
for (item = 0; item < tv_list_len(l); item++) {
for (item = 0; (size_t)item < table_size; item++) {
const list_T *const li_l = ptrs[item];
const listitem_T *lili = tv_list_first(li_l);
const varnumber_T n1 = TV_LIST_ITEM_TV(lili)->vval.v_number;
@@ -3011,10 +3011,12 @@ void f_setcellwidths(typval_T *argvars, typval_T *rettv, EvalFuncData fptr)
xfree((void *)ptrs);
update:
;
cw_interval_T *const cw_table_save = cw_table;
const size_t cw_table_size_save = cw_table_size;
cw_table = table;
cw_table_size = (size_t)tv_list_len(l);
cw_table_size = table_size;
// Check that the new value does not conflict with 'listchars' or
// 'fillchars'.
@@ -3028,7 +3030,6 @@ void f_setcellwidths(typval_T *argvars, typval_T *rettv, EvalFuncData fptr)
}
xfree(cw_table_save);
done:
changed_window_setting_all();
redraw_all_later(UPD_NOT_VALID);
}