Environments, windows

Hey guys,

i'm not sure about this:
If i create a window and start a program with an environment: setmetatable({term = window}, {<index point to _G>}),
would all APIs like textutils use the term of the programs environment or the term of the global table.
I did a test, and textutils respects the window, but in my second test, the program only get term as a window and textutils, without sleep and it also works.
Inherit textutils all fields of the upper program caller or use it the global term or is there a secret mechanism?

Thanks in advance and hopefully it inherits all fields of the upper program
Sewbacca

textutils respects term.redirects. Don't even bother inserting term into the environment, just use term.redirect. You might replace term.native() though.

KingofGamesYami, on 28 September 2016 - 10:05 PM said:

textutils respects term.redirects. Don't even bother inserting term into the environment, just use term.redirect. You might replace term.native() though.

I used:

loadfile('test', {term = window.create(...), textutils = textutils})

and

term.write(...)
textutils.slowPrint(...)

and it works.
… stands for data, i am to lazy to write it down, not for closures (i'm not sure, if this is the right name)

Actually (…) is/are vararg(s).

varargs, okay.
Why textutils respect the current term in the environment in this case?

Because textutils doesn't specifically index into _G to get the default term table.

It needs to, though, and a window object won't cut the mustard as a replacement - any script which wants to call term.native(), term.current(), term.redirect(), etc will fail the way you're doing things because windows don't offer those functions.

So: use term.redirect() yourself. If you want to use a specific terminal when calling a function, redirect to that terminal before calling that function. If you want to associate a terminal with a coroutine, redirect before each resume, and pay attention to what it might've switched to when it next yields.

Bomb Bloke, on 29 September 2016 - 12:31 PM said:

Because textutils doesn't specifically index into _G to get the default term table.

It needs to, though, and a window object won't cut the mustard as a replacement - any script which wants to call term.native(), term.current(), term.redirect(), etc will fail the way you're doing things because windows don't offer those functions.

So: use term.redirect() yourself. If you want to use a specific terminal when calling a function, redirect to that terminal before calling that function. If you want to associate a terminal with a coroutine, redirect before each resume, and pay attention to what it might've switched to when it next yields.

I think there are many reason, why window.create don't offers redirect, current and native methods.
Yes, i agree with you using term.redirect. I had many ideas, by setting up an environment with
term = window.create(…), but there are too many ways to hack you out of the given term. The easiest
version i think, is using an API.