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Comment by andybak | Hacker News Reader

Just took a quick look and the first example does that hateful thing with starting lines with commas. Even if that's just a convention thing it instantly makes me want to avoid it.

Just allow trailing commas at the end of lists. It's much less jarring and unfamiliar.

Trivial? Maybe. But my brain takes a while to adjust to new conventions and I do it way too frequently already.

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You can have trailing commas just fine: https://github.com/dhall-lang/dhall-lang/pull/956

However, `dhall format` is _very_ opinionated, and will remove it.

Does dhall format have an opinion about commas at the start vs end of lines? What's the recommended style?

I formatted

  { foo = 3, bar = 4, baz = 5, verylongproperty = 6, dunnoneedsmoremore = 7, howmanytoforcealinebreak = 8 }

And it forces the comma at the beginning of the line, Haskell-style:

  { foo = 3
  , bar = 4
  , baz = 5
  , verylongproperty = 6
  , dunnoneedsmoremore = 7
  , howmanytoforcealinebreak = 8
  }

This will not diff well if you add a new row at the beginning. It's the same problem with non-trailing-commas, but moved to the front instead of the end.

IME people tend to just add stuff at the bottom. Doesn't help with ordered lists, though.

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