Is there a reason that Eduardo Chappa's excellent set of bug fixes and feature improvements, which can be found at http://staff.washington.edu/chappa/alpine/ should be kept separate from the main codebase? Rolling those in seems like it would be an excellent step at this point.
complete patch for v2.00
Yes as I have posted to -devel Eduardo asked me to not integrate them as they don't have a license defined.
Would at least be possible to have an updated patch file which can work "as is" with the latest release?
Besides the fact that Eduardo Chappa denied redistribution, the patches are currently not available since staff.washington.edu/chappa was removed. You probably want to contact Eduardo Chappa personally, see http://mailman2.u.washington.edu/pipermail/alpine-info/2011-April/004056.html
I'm not sure which of Chappa's patches are of interest, but I stumbled onto another maildir mailbox format patch, if that's of interest to anyone.
http://www.gluelogic.com/code/PINE-maildir/
About the maildir patch for Pine as provided at gluelogic, please, see the discussion at http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=405762.
BTW, Chappa's patches are now available at http://patches.freeiz.com/alpine/ though still not licensed in a way that we could use and redistribute them in Debian and other distributions.
Ooph, it was painful just reading that. Normally, it would be encouraging to know that a feature had been implemented multiple times by different people. But, in this case, somehow it seems worse--it is absurd to re-write it from scratch, but you can't use the work that's already been done. It's a paralyzing feeling. My sympathies to the re-alpine team.
On the broader issue of the whole collection, if there's no hope for integrating these patches, I suggest closing this request, ending the speculation. At least then people will know they need to file new requests & bugs for everything Chappa did.
A new hope. Eduardo's patches appear to be Apache licensed. Someone else should verify this, though. I can't quite find it clearly shown on his website, but he mentioned it on the alpine-announce list recently.