Permitting trailing commas for record syntax ADT declarations

[Alexander Berntsen]

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On 23/09/14 10:03, Johan Tibell wrote:
> I must say that requiring a language pragma makes the feature quite
> a bit more heavy weight. We're not changing the meaning of any
> existing programs, just allowing some new ones. One could argue
> that perhaps the HaskellXX standard might pick up this new pragma
> and thus making it unnecessary eventually, but the standardization
> process is dead (and even when it was alive, it was lagging actual
> practice enough that it was largely ignored.)
It makes it a *lot* more involved. And your reasoning of "hey, it
doesn't break anything" was that of my own.

Staring at the parser code this morning I've decided that if there's a
pragma, I will add a Wiki page and Trac ticket and have everyone vote
on what they want to go in, and then make *one* commit, "Add
ExtraCommas" that does it all. It will be a gigantic mess to do it in
small commits.
- -- 
Alexander
alexander at plaimi.net
https://secure.plaimi.net/~alexander
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