subrepo: use vfs.readdir instead of os.listdir to avoid expensive stat calls "kind" information given from "vfs.readdir()" makes expensive stat calls "os.path.isdir()" and "os.path.islink()" useless.

editor: prefer 'intermediate-source' extra to use for HGREVISION environment variable Revision 51930a7180bd ('graft: record intermediate grafts in extras') introduced 'intermediate-source' extra which refers to the closest graft source. As 'intermediate-source' extra provides more detailed information about the source changeset than 'source' one, it is better to prefer the first one to use as a value of HGREVISION environment variable for an editor.

bundle2: rename format, parts and config to final names It is finally time to freeze the bundle2 format! To do so we: - rename HG2Y to HG20, - drop "b2x:" prefix from all part names, - rename capability to "bundle2-exp" to "bundle2" - rename the hook flag from 'bundle2-exp' to 'bundle2'

manifestdict: extract condition for _intersectfiles() and use for walk() The condition on which manifestdict.matches() and manifestdict.walk() take the fast path of iterating over files instead of the manifest, is slightly different. Specifically, walk() does not take the fast path for exact matchers and it does not avoid taking the fast path when there are more than 100 files. Let's extract the condition so we don't have to maintain it in two places and so walk() can gain these two missing pieces of the condition (although there seems to be no current caller of walk() with an exact matcher).

manifestdict.walk: remove now-redundant check for match.files() When checking whether we can take the fast path of iterating over matcher files instead of manifest files, we check whether match.files() is non-empty. However, now that return early for match.always(), it can only be empty when there are only include/exclude patterns, but in that case anypats() will be True, so it's already covered. This makes manifestdict.walk() more similar to manifestdict.matches().

manifest.walk: special-case match.always() for speed This cuts down the run time of hg files -r . > /dev/null from ~0.850s to ~0.780s on the Firefox repo. Note that manifest.matches() already has the corresponding optimization.

manifest.walk: use return instead of StopIteration in generator Using "return" within a generator is supposedly more Pythonic than raising StopIteration.

archive: look for first visible revision to build repo identity (issue4591) No test for the case where all revisions are hidden because "archive" command aborts if the target revision is null.

largefiles: use common function to build content of .hg_archival.txt This fixes the missing "changessincelatesttag" field introduced by 242d11819c6c.

test-largefiles: verify content of .hg_archival.txt