[antlr-interest] still more => wars ;)

[Kay Roepke]

On 9. Dec 2005, at 7:58 Uhr, MenTaLguY wrote:

> I wonder whether we could do different types of arrows here, though,
> rather sticking funny tails on them?
>
> e.g.:
>
>  predicate: =>
>  hoisting disambiguating predicate: ->
>  gated predicate: >>

I'd rather not see that.
While it is true that the difference in still only one character, I  
really
favor "funny tails". If I think arrow, I see the pictures of => and - 
 > in my mind.
(Having to deal with Perl a lot I actually think of => as a comma,  
but that's a different story...;)

Coming up with good candidate "tails" for hoisting and gated preds  
will make them easier to recognize, IMHO,
simply because the tail will stand out more than '=' vs. '-'.
Of course this always implies you don't use an intelligent editor  
with syntax coloring. (<general>And please refrain
from advertising one to me.</general>)

I really like the syn (...), sem {...}, arrow is pred rules, OTOH as  
Terence put it:
"I'm not in love with the ({...}?)=> but it doesn't require new  
syntax at all."
But still, I think that it is a bit to cumbersome to type all that.  
One is bound to mess up at some time,
given that it would probably be used very little. I'd like to see  
something terse, which I can remember at will.

- k