"for thing, i (in|of) things" doesn't compile inside an object definition

[mattparlane]

This code:

o =
  first: 'thing'
  second: for thing, i of things
    thing
  third: for thing, i in things
    thing

compiled correctly in 1.5.0, but in 1.6.0 and later, it gives this error:

test.coffee:3:19: error: unexpected }
  second: for thing, i of things

The absence or presence of any of the lines doesn't seem to make much difference -- in other words, removing the "first" line doesn't matter, and both the "second" and "third" lines fail on their own.

[connec]

Worth noting that without the , i it all works:

o =
  key: v for v in a
  key: for v in a then v
  key: for v in a
    v

With the , i all variants fail with the same error:

o =
  key: v for v, i in a
o =
  key: for v, i in a then v
o =
  key: for v, i in a
    v

# All fail with the following error, always with the "v" highlighted
# [stdin]:2:YY: error: unexpected }
#   key: [...] for v, i in a [...]
#                  ^

However, wrapping the loops in parenthesis will work:

o =
  key: (v for v, i in a)
  key: (for v, i in a then v)
  key: (for v, i in a
    v
  )

[mattparlane]

Yeah, I meant to mention that. I didn't realise that wrapping them in parens worked -- thanks!

I'll leave it open though since it does appear to be a regression.

[mattparlane]

You guys all rock! Any clues on when the next release including this change will be?

[xixixao]

Tomorrow. Right @jashkenas ? :)

[michaelficarra]

@xixixao: As soon as @jashkenas approves #3326, I can cut the release.