copyright: update to 2019 Differential Revision: https://phab.mercurial-scm.org/D5779

patch: handle 0 context lines (diff.unified=0) when parsing patches Previously, if there were no context lines, we would just keep updating the ranges and the hunk, but not actually storing the hunk (just overwriting it each time). Thus a diff like this: $ hg diff --config diff.unified=0 diff --git a/bar b/bar --- a/bar +++ b/bar @@ -1,0 +2,1 @@ 1 +change1 @@ -3,0 +5,1 @@ 3 +change2 would come out of the parser like this (change1 is lost): bar: @@ -3,0 +5,1 @@ 3 +change2 This had some really weird side effects for things like commit --interactive, split, etc. Differential Revision: https://phab.mercurial-scm.org/D5743

py3: pass str into RuntimeError() to prevent b'' in output # skip-blame as just r'' prefixes Differential Revision: https://phab.mercurial-scm.org/D5740

py3: use '%d' instead of '%s' for integers Differential Revision: https://phab.mercurial-scm.org/D5738

tests: port test-hgweb-auth.py to Python 3 Differential Revision: https://phab.mercurial-scm.org/D5736

url: convert some variables back to bytes Differential Revision: https://phab.mercurial-scm.org/D5735

url: add some defensive asserts on expected incoming types Our type handling is a nightmare here, and we're loading passwords to do network IO, so we can afford to be potentially-slow but pedantic here. Differential Revision: https://phab.mercurial-scm.org/D5734

changegroup: don't try to build changelog chunks if not required When we extend a narrow clone without ellipsis, we don't download changelog information because that's already present with the client. However we still try to build that chunk stream. Building that chunk stream involves calling a lookup function and store.emitrevisions() API. The lookup function is called len(cl) number of times. On large repositories, where len(cl) is in millions, calling that lookup function is not a good idea. Also it's not required to use the store.emitrevisons() API because we already have nodes present which we can use. This patch short-circuits state building logic if we are processing a non-ellipsis case and changelog is not required. This saves up ~20 seconds on our internal repo for a single extend call. Differential Revision: https://phab.mercurial-scm.org/D5733

revlog: make sure we never use sparserevlog without general delta (issue6056) We are getting user report where the delta code tries to use `sparse-revlog` logic on repository where `generaldelta` is disabled. This can't work so we ensure the two booleans have a consistent value. Creating this kind of repository is not expected to be possible the current bug report point at a clonebundle related bug that is still to be properly isolated (Yuya Nishihara seems to a have done it). Corrupting a repository to reproduce the issue is possible. A test using this method is included in this fix.

sparserevlog: document the config option This was overlooked when this graduated from experimental.