Missing global warning in lua interactive mode

[Jure Bagić]

When running lua standalone interactively the usual warning for the local
statement works properly in the latest release but not for the global
statement/declaration.

Or such warning is not there on purpose?

(lua.c:621:checklocal)

--
Jure

[Jure Bagić]

P.S: I do realize globals survive across multiple lines. I just think it would
be a good idea for user to get a hint that his global definition has no usual
implications on the following lines when in the interactive mode outside of a
block.

--
Jure

[Roberto Ierusalimschy]

It is quite common that someone sees a piece of code, enters it line by
line in the REPL, and then it doesn't work as expected because there is
some local declaration in the code.

The the "local" warning was added specifically because of that common
scenario, not as some generic hint. The fact that "global" does not
survive accross lines cannot change the meaning of some piece of code
(or can it?), so it is not worth a warning.

-- Roberto

[Jure Bagić]

I guess what to me looked wrong was the 'const' attribute:
> global <const> A = 1;
> A = 2; assert(A == 2);

But again, as you pointed out, the meaning of the following line is not changed
and nobody would write this anyway.

-- Jure