merge with stable

debugbundle: fix up long line caught by check-code

wireproto: avoid naked excepts

mq: fix typo in docstring

commands: add debugbundle command Lists ids contained in a bundle file. Useful for testing bundle-related commands.

wireproto: add known([id]) function known([Node]) -> [1/0] Returns 1/0 for each node, indicating whether it's known by the server. Needed for new discovery protocols introduced in later patches.

wireproto: fix decodelist to properly return empty list Needed by tests for next patch introducing known().

wireproto: fix handling of '*' args for HTTP and SSH

debug: add debugwireargs to test argument passing over the wire Tests argument passing locally, via HTTP, and via SSH. This is mainly preparation for the next patch.

sshserver: drop unnecessary line

merge: avoid unlinking destination of merge when case changes (issue2715)

dirstate: introduce a public case normalizing method

changegroup: minor cleanups

repair: revlog has an iterator

changegroup: fix leftover from delta read

changegroup: drop expensive redundant usage of readdelta for progress

changegroupsubset: use manifest.readfast to simplify collector

manifest: add readfast method

changegroupsubset: simplify filenode_collector

changegroupsubset: more renaming

changegroupsubset: simplify prune Ancestors of nodes linked to commonrevs can be expected to be linked to commonrevs. Walking graphs of each revlog looking for rare/nonexistent outliers is overkill.

changegroupsubset: more minor cleanups - remove more excessive comments - simplify some sorting operations - rename some variables - replace identity with a lambda

changegroupsubset: minor cleanups - move some variable declarations - drop some excessive comments - use standard variable naming

strip: simplify collectone

dirstate: avoid a race with multiple commits in the same process (issue2264, issue2516) The race happens when two commits in a row change the same file without changing its size, *if* those two commits happen in the same second in the same process while holding the same repo lock. For example: commit 1: M a M b commit 2: # same process, same second, same repo lock M b # modify b without changing its size M c This first manifested in transplant, which is the most common way to do multiple commits in the same process. But it can manifest in any script or extension that does multiple commits under the same repo lock. (Thus, the test script tests both transplant and a custom script.) The problem was that dirstate.status() failed to notice the change to b when localrepo is about to do the second commit, meaning that change gets left in the working directory. In the context of transplant, that means either a crash ("RuntimeError: nothing committed after transplant") or a silently inaccurate transplant, depending on whether any other files were modified by the second transplanted changeset. The fix is to make status() work a little harder when we have previously marked files as clean (state 'normal') in the same process. Specifically, dirstate.normal() adds files to self._lastnormal, and other state-changing methods remove them. Then dirstate.status() puts any files in self._lastnormal into state 'lookup', which will make localrepository.status() read file contents to see if it has really changed. So we pay a small performance penalty for the second (and subsequent) commits in the same process, without affecting the common case. Anything that does lots of status updates and checks in the same process could suffer a performance hit. Incidentally, there is a simpler fix: call dirstate.normallookup() on every file updated by commit() at the end of the commit. The trouble with that solution is that it imposes a performance penalty on the common case: it means the next status-dependent hg command after every "hg commit" will be a little bit slower. The patch here is more complex, but only affects performance for the uncommon case.

changegroupsubset: extranodes are no longer needed

strip: remove usage of extranodes Instead of computing the exact set of missing revlog revisions, we only compute the set of missing/broken changesets. The resulting bundle can be slightly bigger but we will be able to get rid of the ugly extranodes handling in changegroupsubset.

patch: move closefile() into patchfile.close()

patch: inline patchfile.hashlines()

patch: fix hunk newlines when parsing hunks, not in iterhunks()