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patch 8.2.1066: Lua arrays are zero based

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Problem:    Lua arrays are zero based.
Solution:   Make Lua arrays one based. (Prabir Shrestha, closes #6347)
            Note: this is not backwards compatible.
This commit is contained in:
Bram Moolenaar
2020-06-27 12:32:57 +02:00
parent 7147820cb9
commit bd84617d1a
4 changed files with 32 additions and 16 deletions
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12
src/if_lua.c
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@@ -871,7 +871,13 @@ luaV_list_index(lua_State *L)
list_T *l = luaV_unbox(L, luaV_List, 1);
if (lua_isnumber(L, 2)) // list item?
{
listitem_T *li = list_find(l, (long) luaL_checkinteger(L, 2));
long n = (long) luaL_checkinteger(L, 2);
listitem_T *li;
// Lua array index starts with 1 while Vim uses 0, subtract 1 to
// normalize.
n -= 1;
li = list_find(l, n);
if (li == NULL)
lua_pushnil(L);
else
@@ -900,6 +906,10 @@ luaV_list_newindex(lua_State *L)
list_T *l = luaV_unbox(L, luaV_List, 1);
long n = (long) luaL_checkinteger(L, 2);
listitem_T *li;
// Lua array index starts with 1 while Vim uses 0, subtract 1 to normalize.
n -= 1;
if (l->lv_lock)
luaL_error(L, "list is locked");
li = list_find(l, n);