Automatic splitting / joining lines respecting max length

[ddickstein]

It would be great if there were an option to automatically split and join lines to respect a max length where the line is split when the max length is exceeded and joined when it can all be fit on a single line without exceeding max length. How to split expressions is of course quite opinionated, so this would probably need to be controlled by multiple options. For example, one might want to support:

local x = {
  foo,
  bar,
  baz,
}

and

local x =
  { foo, bar, baz }

but never

local x =
  { foo, bar,
     baz }

I'm not sure how many options are needed here to satisfy all the different kinds of layouts people might want to allow and disallow (e.g., whether baz in the first example there should always / never end in a comma, whether to use trailing or leading commas, etc.) and I haven't thought too much about other kinds of expressions.

[CppCXY]

this is a feature that needs to be studied, and need to wait for me to finish refactor

[ddickstein]

That makes sense - supporting this properly I'm sure would add considerable complexity.