Context expression being parenthesized

[leana8959]

Hello,

I noticed that (after commit 2cab26dc9d6dcd31115c65a3eec43689020ae654), functions where the entire body is in a context keyword is parenthesized. Was this intended ?
This doesn't affect let bindings that are not functions.

I thought that, compared to how if statements are not enclosed in parentheses, this is a bit inconsistent.

Example:

Before

#let foo() = context {
  5
}

After

#let foo() = (
  context {
    5
  }
)

`if` expressions are not in parentheses

#let foo() = if true {
  5
} else {
  6
}

Thanks a lot and have a nice day :)

[Enter-tainer]

This is related to #114 regards to parenthesizes around expressions. Ideally, we should maintain the length of the first line of the expression, if the length of #let foo() = context { exceed the column width, we should switch to

#let foo() = (
  context {
    ...  
}
)

However this is hard to implement in currect pretty printer. The current behavior is that, if the whole thing on the rhs of = cannot fit in a single line, a parenthesize will be added around it.

I cannot remember why I decide to do this. Maybe this is because changing this can make my testset looks better.