Re: [Haskell-cafe] Haskell grammar ambiguity

On 16 Jun 2021, at 10:38 am, Askar Safin via Haskell-Cafe wrote:

I agree. I always use curly braces with "do" and "case", i. e.: do { ...; ...; }

I, on the other hand find, e.g., BlockArguments and ApplicativeDo to be useful decluttering extensions. These are not without their "pockets of support". Perhaps some of the error messages could be less optimistic in suggesting "BlockArguments", the user who meant to use them would typically deduce the forgotten pragma even without an explicit hint when the hint degrades error quality for others. The specific error message choices are not inherent to the extension. -- Viktor.