Progess is glacial, but is nevertheless in the right direction - this in today from Professor Hardaker at the Royal Meterological Society in response to my query as to how the RMS publications committee had decided to address the issue of availability of data and code.
The Scientific Publications Committee did agree that the Society should formalise its policy for all of its journals on this and that the spirit of the policy should be to make available supporting information and data where possible within the licensing and copyright rules – we think this follows best practice. The Committee have asked me to finalise a draft policy for their approval at the next meeting.
The devil will be in the detail of course, but at first sight "supporting information and data" might well be construed as covering data, intermediate results and code. Let's hope so. It will also be interesting to see if they adopt a policy of demanding all this information up front, or if they go for the normal physical science journal approach of making information "available upon request". I hope they don't choose the latter, a sure recipe for conflict in the future, but we will have to wait and see.