changegroup: move chunk extraction into a getchunks method of unbundle10 This code used to be in `writebundle` only. We needs to make it more broadly available for bundle2. The "changegroup" bundle2 part has to retrieve the binary content of changegroup stream. We moved the chunks retrieving code into the `unbundle10` object directly and the `writebundle` code is now using that. This split is useful for bundle2 purpose, we want to be able to easily stream changegroup content in a part. To keep thing simples, we kept compression out of the new methods. If it make more sense in the future, compression may get included in this function too.

bundle2: use reply part to return result of addchangegroup We now have an official way to return the result of addchangegroup. The tests are updated to check that the return bundle is properly created. It will be used when push is bundle2 enabled.

bundle2: produce a bundle2 reply We do not know yet what kind of data future features and extensions will need to exchange. To handle that, bundle2 allows to send arbitrary content to the server. As a consequence, we need to be able to reply arbitrary content to the client. And, we can use bundle2 to transmit those arbitrary data. When a client will push a bundle2 to the server, the server will reply with a bundle2 itself. This changeset installs the first stone of this logic and test it.

bundle2: add reply awareness to unbundlerecords We need an efficient way to handle bundle replies. The unbundle records class is extended to carry such data.

bundle2: add an integer id to part For sending response to a pushed bundle, we need to link reply parts to request part. We introduce a part id for this purpose. This is a 32 bit unique integer stored in the header.

largefiles: don't prompt when one side of merge was changed but didn't change This can happen after backout or grafts or criss cross merges. We already do the same (but slightly different) thing in manifestmerge and filemerge.

color: fallback and test label as an effect With this changeset, we can now send a color name directly to the label function, e.g. $ hg log -r . -T "{label('red', node|short)}\n"

color: extract method for determining a valid effect This patch is just setup work so that we can reduce code duplication and have one place to define a valid effect.

revlog: use context ancestor instead of changelog ancestor We want to move in this direction.

copies: guard debug section with ui.debugflag

copies: remove _checkcopies wrapper - it does no good mergecopies might be doomed but it is not dead yet ...

transplant: use context ancestor instead of changelog ancestor We want to move in this direction. ctx.ancestor is in a better position for handling a situation with multiple ancestors.

commit: use revlog.commonancestors instead of .ancestor This do probably not make any real difference but is slightly more correct and we would like to get rid of flog.ancestor.

backout: don't limit heritage check to a single ancestor This do probably not make any real difference but is slightly more correct and we would like to get rid of changelog.ancestor.

ancestor: remove unused genericancestor

context: remove unused filectx.ancestor

shelve: add "writebundle()" to invoke "writebundle()" with relative path and vfs

shelve: add "applybundle()" to invoke "readbundle()" with relative path and vfs "applybundle()" also includes "addchangegroup()" invocation to encapsulate "vfs.join()" inside it.

bundlerepo: treat temporarily extracted bundle file via vfs

vfs: add "mkstemp()"

repair: make "strip()" treat bundle files via vfs This patch makes "repair.strip()" treat bundle files via vfs. This patch also avoids applying "vfs.join()" on the value returned by "changegroup.writebundle()", to get relative path from "_bundle()".

changegroup: add "vfs" argument to "readbundle()" to pass relative filename

repair: make paths in "_bundle()" relative to ".hg" This patch makes paths below in "_bundle()" relative to ".hg": - backup directory ("strip-backup"), and - bundle file under backup directory "vfs" is passed to "changegroup.writebundle()" to use relative path directly. This patch applies "vfs.join()" on the value returned by "_bundle()", because the caller expect it to return absolute path. This will be changed by succeeding patch changing the caller side.

changegroup: add "vfs" argument to "writebundle()" for relative access via vfs Before this patch, filename specified to "changegroup.writebundle()" should be absolute one. In some cases, they should be relative to repository root, store and so on (backup before strip, for example). This patch adds "vfs" argument to "writebundle()", and makes "writebundle()" open (and unlink) "filename" via vfs for relative access, if both filename and vfs are specified.

localrepo: make "undofiles()" return list of tuples "(vfs, relative filename)" Before this patch, "localrepository.undofiles()" returns list of absolute filename of undo files. This patch makes it return list of tuples "(vfs, relative filename)" to access undo files via vfs. This patch also changes "repair.strip()", which is the only user of "localrepository.undofiles()".

exchange: fix pyflakes import complaint

hgweb: override the charset attribute in the http request The default http request character set is UTF-8. If the message is not encoded in UTF-8, such as big5, it cannot be shown correctly. The 'charset' is overridden by the root document's, such that the user can select the proper encoding in the browser.

diff: use second filename for --stat reporting on git patches (issue4221)

exchange: drop useless line break

subrepo: check return code for git push (issue4223)