How Effectively Agents Write D

[jmh530]

On Friday, 6 November 2026 at 19:53:53 UTC, Peter Alexander wrote:
> On Friday, 6 November 2026 at 18:57:19 UTC, Walter Bright wrote:
>> I don't understand the issue with reserving `macro` as a 
>> keyword.
>
> It's just a common identifier to use. The agent didn't realise 
> it was reserved and tried to use it. Also hit conflicts trying 
> to use ModuleInfo and capacity (defined in `object.d`). It's a 
> relatively small thing and easily fixed, but it is a papercut 
> hit in 15 different sessions!

Did you actually measure the cost of this? Like it burned X 
tokens in 15 sessions because of this (and then put a dollar 
value on that)?

Because if you put something like "don't use the macro keyword" 
in a skills file, it might burn even more tokens making sure that 
it doesn't use it than accidentally using it and trying to figure 
out why that's a problem.