[Process] Explain setTtty(), setPty() and related methods

[javiereguiluz]

The Process component defines methods like setTty(), setPty(), isPtySupported(), etc. We should explain what do those method mean.

This issue shows how a problem could be solved just by using setTty() method: symfony/symfony#17010

[javiereguiluz]

Here is another example where using ->setTty(true) magically solved all the problems: symfony/symfony#15626

[ogizanagi]

Also note it has some painful drawbacks:

• Unable to redirect nor pipe output sensiolabs/melody#65
• [Process] Issue with setTTY=true symfony#16683

[javiereguiluz]

@ogizanagi let's call it "the TTY lottery" then. It can solve all your problems ... or ruin everything!

[mablae]

Interesting. I think the lack of understanding of shells/ttys is the main problem here.

I was also looking for an option to get colored output from an started Process.

[philip]

Agreed that a basic TTY understanding is the ideal solution here but it's difficult to learn/know everything in this complicated world. Maybe a short #explainlikeimfive description can be added?

That said, the guide[1] does not include the string tty at all, or at least I assume that's what this doc issue is referring to. I might come up with something but it'd be vague as my uneducated brain thinks ttyl whenever it comes across tty ;)

[1] https://symfony.com/doc/current/components/process.html

[carsonbot]

Thank you for this issue.
There has not been a lot of activity here for a while. Has this been resolved?

[carsonbot]

Friendly reminder that this issue exists. If I don't hear anything I'll close this.