check-code: do not abort on an unreadable file, only report this

heads: fix children/descendants in doc (issue3992)

paper: fix rendering of the first tab in a line in Webkit (issue3990) This fixes issue3990 for Webkit-browsers, and also older Opera versions. Rendering in firefox is not changed.

hgweb: fix duplication for some search queries Given that N is maximum revision number in a repo, than if a revision with number N-100n or N-100n+1 (for any integer n) is found with a hgweb search, this revision is duplicated in search results.

sslutil: force SSLv3 on Python 2.6 and later (issue3905) We can't (easily) force SSL version on older Pythons, but on 2.6 and later we can force SSLv3, which is safer and widely supported. This also appears to work around a bug in IIS detailed in issue 3905.

httpclient: update to revision 9517a2b56fe9 of httpplus (issue3905) Includes upstream change "socketutil: force SSLv3 by default, as it is safer" which should fix issue 3905.

hgweb: force connection close on early response Not all WSGI servers close the socket when an early response is sent to a large POST request, which can cause the server to interpret the already-sent request body as an incoming (but hopelessly invalid) request.

hgweb: fix incorrect revisions count in graph (issue3977) Actual amount of revisions is used now instead of their numbers in the repo before to deal with skipped numbers correctly.

hgweb: fix incorrect way to count revisions in log (issue3977) Actual amount of revisions is used now instead of their numbers in the repo before to deal with skipped numbers correctly. This iterates starting from the newest revision (which is shown on top) yielding up to the specified count, instead of the reversed order used before. Effect of this change on efficiency is negligible, when the same changesets are returned.

hgweb: always start graph with the revision in url It is the same fix for graph command, as was recently for log. This makes the specified revision be always on top of the graph view. Before the patch, for example with repo having revisions 0, 1, 2, 3 and revision in url being '2', all revisions were shown and the specified one wasn't the first.

merge with i18n

i18n-pt_BR: synchronized with bf6bc4681383

update: add tracking of interrupted updates (issue3113) This takes advantage of the new checkunfinished infrastructure

mq: add checkunfinished support (issue3955)

transplant: add checkunfinished (issue3955) Nobody loves transplant anymore, but it was the first command to have a --continue flag.

histedit: add checkunfinished support (issue3955) The tests contain a couple corner cases where workarounds are now required. Strictly speaking, these are behavior regressions, but of an extremely obscure and marginal sort. Commits or updates in the middle of a histedit would have almost always been fairly serious user error.

rebase: add checkunfinished support (issue3955)

rebase: reorder parent check and state storage This could cause a rebase to be 'in progress' even though it aborted.

commands: add checks for unfinished operations (issue3955) commands checked: backout bisect commit graft import

update: clear any clearable unfinished operations (issue3955) Unclearable operations will cause an abort.

cmdutil: core functionality to block during multistep commands (issue3955) This adds a registration point and check functions that will allow commands to check if multistep operations like an interrupted graft or rebase are in progress before proceeding.

histedit: refuse to edit history that contains merges (issue3962)

largefiles: overridematch() should replace the file path instead of extending (issue3934)

revlog: handle hidden revs in _partialmatch (issue3979) Looking up hidden prefixes could cause a no node exception Looking up unique non-hidden prefixes could be ambiguous