Re: lua_rawget and lua_rawset expect tables

[Xmilia Hermit <xmilia.hermit@...>]

lua_gettable looks up the __index metamethod or table when t is not a 
table or t is missing the property. It can be compared to writing 
("")["sub"] in lua. Strings are not tables, however, they have a 
metatable with the "sub" function.

Am 17.02.2022 um 10:43 schrieb Flyer31 Test:
> What do you mean by this? lua_gettable returns t[k] - how can t be NOT
> a table in this case?
>
> (sorry, I am newbe to Lua, I hope not too stupid question).
>
> On Thu, Feb 17, 2022 at 9:01 AM Xmilia Hermit <xmilia.hermit@gmail.com> wrote:
> > The Lua C API functions lua_rawget and lua_rawset expect a table which
> > is used without any runtime check (except an API check)
> > (https://github.com/lua/lua/blob/5d708c3f9cae12820e415d4f89c9eacbe2ab964b/lapi.c#L736).
> > However, the manual
> > (https://www.lua.org/manual/5.4/manual.html#lua_rawget) states for these
> > functions that they are similar to lua_gettable which is not restricted
> > to tables.
> > Since this seems not very clear
> > (https://github.com/LuaJIT/LuaJIT/issues/810) it would be nice if the
> > manual would make it clear for these two functions that tables are expected.
> >
> > Regards,
> > Xmilia