Single-line comments beginning next to some symbols trig parse errors

[eeue56]

Using the single line comment syntax -- before symbols such as <| or |> makes Elm think that it's a name instead of commenting out the rest of the line.

Example:

main = show <| zip [1, 2, 3] [4, 5, 6] --<| 5 + 6

will throw the following error:

NAMING ERROR
Cannot find variable `--<|`

7|   show <| zip [1, 2, 3] [4, 5, 6] --<| 5 + 6
Maybe you want one of the following?

    <|
    Basics.<|

Expected behaviour:

It should comment out the rest of the line. If this isn't possible due to the valid use of - within names, then the error throw should be more descriptive - perhaps something along the lines of "If you are trying to comment out the rest of the line, put a space between -- and the symbol <|"

[eeue56]

Duplicate of elm/compiler#894, unneeded

[eeue56]

Duplicate of elm/compiler#894, unneeded