process: display process tasks in the terminal

[paul-marechal]

What it does

Displays process task output in a terminal like VS Code.

Fixes #5908.

How to test

You can use the following task configuration to see that process task output is now displayed in a terminal:

{
    "tasks": [
        {
            "label": "[Task] Echo a string",
            "type": "process",
            "cwd": "${workspaceFolder}",
            "command": "bash",
            "args": [
                "-c",
                "sleep 3 && echo 1 2 3"
            ]
        }
    ]
}

Review checklist

• as an author, I have thoroughly tested my changes and carefully followed the review guidelines

Reminder for reviewers

• as a reviewer, I agree to behave in accordance with the review guidelines

[vince-fugnitto]

The PR breaks the command Task: Show Running Tasks...

Steps to Reproduce:

1. open the folder theia/packages/task/test-resources as a workspace
2. run multiple tasks shell: long running test task (ex: 2)
3. execute the command Task: Show Running Task... and select a task from the dropdown
4. the terminal displaying the output of the task is not activated

[akosyakov]

Is there a related issue for it? please reference it with fix in PR body and commit

[paul-marechal]

@vince-fugnitto should be fixed.

[paul-marechal]

To people reviewing and that are familiar with VS Code tasks system: Should we rather display any task output in the terminals? Are there cases where the output is not displayed?

[elaihau]

To people reviewing and that are familiar with VS Code tasks system: Should we rather display any task output in the terminals? Are there cases where the output is not displayed?

there is a showOutput flag we can use to toggle https://stackoverflow.com/a/38723286
also, isBackground flag is kind-of related (search "isBackground" from https://code.visualstudio.com/docs/editor/tasks)

[elaihau]

I tested the change in both single and multi root workspace. I verified the followings:

• task can be started and terminated
• attach task worked
• recent tasks are displayed in the quick open properly
• detected tasks are not affected.

Thank you for the work !

[akosyakov]

there is a showOutput flag we can use to toggle https://stackoverflow.com/a/38723286
also, isBackground flag is kind-of related (search "isBackground" from https://code.visualstudio.com/docs/editor/tasks)

@elaihau please make sure to file Theia issues to support these features

[vince-fugnitto]

@vince-fugnitto should be fixed.

I confirmed that it still works, thanks.

[RomanNikitenko]

I tested the changes and tried to run tasks:

• with process type
• with shell type
• npm tasks

I got output for those tasks, so it works well for me.

[elaihau]

Sure Anton. I created #5974

[elaihau]

I am not sure if Theia needs isBackground though. Is task-in-theia not always running in the background unless we terminate it?