do not allow users to create an empty font group (#1303)
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@ -145,6 +145,8 @@ static int f_font_group(lua_State* L) {
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luaL_checktype(L, 1, LUA_TTABLE);
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table_size = lua_rawlen(L, 1);
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if (table_size <= 0)
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return luaL_error(L, "failed to create font group: table is empty");
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if (table_size > FONT_FALLBACK_MAX)
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return luaL_error(L, "failed to create font group: table size too large");
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