StyLua now supports collapsing simple statements

Originally posted on Reddit

Starting from version 0.14.0, StyLua (the Lua code formatter in Neovim world) implements option collapse_simple_statement. From release notes:

It can take the values Never (default), FunctionOnly, ConditionalOnly or Always. When enabled, “simple” functions or if statements (ones where they only return a value or have a simple statement such as a function call) will be collapsed onto a single line where possible.

So now with collapse_simple_statement = "Always" instead of this …

local f = function()
  return true
end

local g = function()
  f()
end

if is_bad then
  return
end

if is_good then
  a = 1
end

… it will be formatted as …

local f = function() return true end

local g = function() f() end

if is_bad then return end

if is_good then a = 1 end

This is great news for Neovim plugin authors and general users as this type of code is very common. Having it on single line improves readability (in my opinion).

I happily switched to this option. Although using 120 width seems to be quite high sometimes in these cases, so I might start using 100 or even 80.

(Note: I am not an author, JohnnyMorganz is. He is a thoughtful creator and maintainer of StyLua.).