[BBv2] Order sensitive features

From: Alexey Pakhunov (alexeypa_at_[hidden])
Date: 2005-09-15 13:50:22

Hi,

Some ideas about order sensitive features:

In builtin.jam some features are commented as 'order-sensitive'. Looks 
like there was an attempt to implement them?

I have an idea how they can be implemented. We already have "&&" syntax 
and the only problem is that several features may be passed from 
different places. Once a feature is added to a property set the last is 
re-sorted. I guess this can be changed for 'order-sensitive' features so 
that each new passed value will be attached to the only feature in the 
property set. All values of a feature will be concatenated with "&&" 
into a single value. Order will be preserved.

I think it will work and order of values will be deterministic. What do 
you guys think?

Best regards/Venlig hilsen,
Alexey Pakhunov.