Format: indent multiline call chaining with 4 spaces

[makenowjust]

Closes #5195

See #5195 (comment)

[yxhuvud]

I just wonder how easy it will be to make this kind of exception in the editors. Not all use the builtin formatter by default.

[RX14]

@yxhuvud they should. But I think this rule is easy to apply while typing too. It's just when the line starts with a . mostly.

[makenowjust]

ping

[ysbaddaden]

I quote and support @asterite : "I think the formatter should always use 2 spaces to indent."

This is what I always use: 2 spaces.

• chained calls on multiple lines already have the leading '.' to give the chained information;
• 4 spaces disrupt the usual 2 spaces indentation, despite having nothing peculiar to outline;
• it eats 2 more chars on the line (which I keep under 80).

This is unwelcomed, and one more reason to not use the formatter.

[makenowjust]

Hm, @ysbaddaden's opinion makes sense. Do you have a counter, @RX14, @straight-shoota or any one?

[RX14]

@ysbaddaden it's not a big deal, but I outlined by argument here. If everyone else agrees that an indent of 2 is fine, let's merge this PR with that.

[makenowjust]

@RX14 changed indent size as 2 spaces.

[makenowjust]

ping

[asterite]

So this basically removes the feature of the formatter aligning calls to the dot, right? If so, I think that's fine. More consistent (always 2 spaces for indent), less discussions.