Incorrect parentheses inserted around constructor invocation (coffeescript)

[davidbau]

Parentheses are put in the wrong place near a constructor. This is the weirdest part of the JavaScript (and CoffeeScript) grammar, and we get it wrong.

To repro, enter this file in text mode:

url = 'https://upload.wikimedia.org/wikipedia/commons/2/27/Rainstick.ogg'
new Audio(url).play()

1. Play it. Hear a nice sound.
2. Switch to block mode. Click on the (url) parameter and click away.
3. Notice new (Audio(url)).play(). This means something different.
4. Try to play it. Get an error message about invoking Audio with out "new".

We should detect the new case and be particularly careful about reparsing.

[davidbau]

Actually a lot of coffeescript parentheses are put incorrectly. For example, dragging "and" into "not" messes things up, etc.

The whole precedence in coffee needs to be revisited.