Rationals without a preceeding 0 should produce a better error

[cmontella]

There's some crazy syntax going on here that I don't understand yet

3|  [#exam weight: .3]
                   ^

Should indicate what the error actually is

[joshuafcole]

Not sure that I agree with this. What's wrong with requiring the leading 0 for clarity?

Addendum: My argument against it is that this:

[#foo bar: (1,2,3,4)]

is not very visually distinct from

[#foo bar: (1,2.3,4)]

and is much more readable as

[#foo bar: (1,2,0.3,4)]

Obviously spaces helps somewhat, but it's still very easy to gloss over the trailing character assuming that it's a comma rather than a period.

[cmontella]

If we're taking a hard stance on that, then the error should be different.

[joshuafcole]

Yeah, definitely agree on that.