revset: make parents() O(number of parents) Strip executes a revset like this: max(parents(_intlist('1234\x001235')) - _intlist('1234\x001235')) Previously the parents() revset would do 'subset & parents' which iterates over each item in the subset and checks if it's in parents. subset is usually the entire repo (a spanset) so this takes a while. Reversing the parameters to be 'parents & subset' means the operation becomes O(number of parents) instead of O(size of repo). It also means the result gets evaluated immediately (since parents isn't a lazy set), but I think this is a win in most scenarios. This shaves 0.3 seconds off strip (amend/histedit/rebase/etc) for large repositories. revset #0: parents(20000) 0) obsolete feature not enabled but 54243 markers found! ! wall 0.006256 comb 0.010000 user 0.010000 sys 0.000000 (best of 289) 1) obsolete feature not enabled but 54243 markers found! ! wall 0.000391 comb 0.000000 user 0.000000 sys 0.000000 (best of 4323)

revset: make descendants() lazier Previously descendants() would force the provided subset to become a set. In the case of revsets like '(%ld::) - (%ld)' (as used by histedit) this would force the '- (%ld)' set to be evaluated, which produced a set containing every commit in the repo (except %ld). This takes 0.6s on large repos. This changes descendants to trust the subset to implement __contains__ efficiently, which improves the above revset to 0.16s. Shaving 0.4 seconds off of histedit. revset #27: (20000::) - (20000) 0) obsolete feature not enabled but 54243 markers found! ! wall 0.023640 comb 0.020000 user 0.020000 sys 0.000000 (best of 100) 1) obsolete feature not enabled but 54243 markers found! ! wall 0.019589 comb 0.020000 user 0.020000 sys 0.000000 (best of 100) This commit removes the final revset related perf hotspot from histedit. Combined with the previous two patches, they shave a little over 3 seconds off histedit on large repos.

check-code: look for misuse of __bool__

formatter: correct bool testing which should be __nonzero__ in Python 2

contrib/synthrepo: return None to delete files on commit, don't raise IOError The internal commit API was changed in 650b5b6e75ed to expect None from the filectx function when a file is to be deleted, not an IOError. This change keeps synthrepo up-to-date.

wix: contrib/sample.hgrc is no more

dockerrpm: create a yum/dnf repo from the generated rpms This gives "PPA" functionality where users easily can stay uptodate with latest nightly build.

docker: add CentOS 5 There is no official CentOS 5 docker template so we use one from saltstack.

docker: use stable tags for fedora and centos A moving target is rarely useful.

dockerrpm: prepare source outside docker and just run rpmbuild inside docker Simplifies the rpm build process. We will use platform specific rpmbuild directories and will not clean them and will drop the explicit copy to build directory.