Re: Attribute ignored in first rule of alternatives

On 06-12-17 16:41, Søren Enevoldsen wrote:
>
> auto const bound = rule<Bound>("bound")
>     = (x3::lit("[") >> x3::lit("<=") > uint_ > x3::lit("]"))
>     | (x3::lit("[") >> x3::lit("<") > uint_[bound_dec1] > x3::lit("]"))
>     ; 

Semantic actions inhibit propagation. Your rule doesn't even declare an
attribute type, so it's unclear what you thought would happen without a
semantic action. However, assuming things:

    x3::rule<struct _tag_type, unsigned int, true>

The last template param (`true`) indicates auto-propagation is forced,
like with Qi's `operator%=`


Seth

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