Revert "fix: erase scrollback when clearing the screen"

[s-nel]

Reverts #2267 which clears backscroll of the console when in --watch mode.

Fixes: #2348

[tgodzik]

@kpodsiad what do you think?

[kpodsiad]

Fixing one's workflow breaks another one - https://xkcd.com/1172/

Scroll was being cleared previously, but it was cleared improperly. So I think by design and by default watch mode should clear the scroll.

However, I understand @s-nel preference to not clear it. I wonder, maybe this can be an additional flag? What do you guys think about that?

[tgodzik]

However, I understand @s-nel preference to not clear it. I wonder, maybe this can be an additional flag? What do you guys think about that?

I think flag is the only option to have both cases satisfied

[s-nel]

Scroll was being cleared previously, but it was cleared improperly

It wasn't clearing scroll for me previously. When I start a watch command the console adds a bunch of space so that new lines appear at the top of the console, but everything that ran before is still present in the scrollback. E.g. below I have one --watch running, I cancel it, then I start a new --watch. The new watch starts at the top of the console but it hasn't cleared anything in the scroll.

===============================================
Total duration: 14s
All 1 test suites passed.
===============================================
Watching 50 directories... (press Ctrl-C to interrupt)
^C
$ bloop test ... --watch






























^C
$

In any case, I would be happy with a flag