André Bargull wrote:
There are the usual ASI problems. For example this is currently valid:
```
a
~+ b
```
It is parsed as:
```
a;
~+ b;
```
The fix we entertained for 'is' and 'isnt' was restricted productions:
AdditiveExpression [no LineTerminator here] '~+' MultiplicativeExpression
But we lose backward compatibility. Probably survivable, but who knows?
See my recent post replying to Brandon Andrews.
Note this means ~+ cannot be a single lexeme in general. It has to be
two, ~ and +, when used in the unlikely way: as unary prefix operators
composed together.
/be
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