Re: lua_dofile()/pcall() results are not on stack?

["Duncan Cross" <duncan.cross@...>]

Would it be good enough to copy lua50.exe's functionality that if you
start a command with an equals sign it removes it and puts
"print("...")" around the rest of the line before executing it?

On 7/19/07, Imre Tuske <imre.tuske@gmail.com> wrote:
> Hi,
>
> What I'm trying to achieve is an interactive Lua command line in my
> program, which executes the given Lua commands, then display their
> results. (Or, let's say, display the result of the first or last
> command, if there are more than one.)
>
> According to the lua_pcall() docs, there should be values on the stack
> after execution. I noticed that if I specify a "return" statement
> explicitly at the end, the values are passed through the stack, but
> otherwise not.
>
> What I'd really like is to get results on the stack without giving an
> explicit "return" statement. I need it because this will be an
> interactive Lua 'console', where users can type quick commands that
> get evaluated, and the idea is that the user should type only like
> this:
>
> math.sin(1)
>
> instead of typing
>
> print(math.sin(1)) or
> return math.sin(1)
>
> Any ideas on how to achieve this? (An alternative: if I somehow could
> detect whether the to-be-executed block contains a single command, and
> insert a 'return' statement before it somehow.) I'm open to any idea
> :)
>
>
> imre
>
>
> --
> [ Imre Tuske | http://... | mailto:imre.tuske@gmail.com ]