Re: [build] ERROR: rule "[[bbv2.builtin.features.warnings]]`warnings`::" unknown in module "warnings-feature"

From: Peter Dimov (pdimov_at_[hidden])
Date: 2020-03-06 11:51:21

Mateusz Loskot wrote:
> but this refers to something that puzzles me most
>
> ```
> ERROR: rule "[[bbv2.builtin.features.warnings]]`warnings`::" unknown
> ```
>
> a bit of comment block?
>
> ```
> #| tag::doc[]
>
> [[bbv2.builtin.features.warnings]]`warnings`::
> ```

This is probably caused by using an old version of b2 that doesn't 
understand block comments, which were introduced relatively recently.