statfs: change Linux feature detection Previously we check three things: "statfs" function, "linux/magic.h" and "sys/vfs.h" headers. But we didn't check "struct statfs" or the "f_type" field. That means if a system has "statfs" but "struct statfs" is not defined in the two header files we check, or defined without the "f_type" field, the compilation will fail. This patch combines the checks (2 headers + 1 function + 1 field) together and sets "HAVE_LINUX_STATFS". It makes setup.py faster (less checks), and more reliable (immutable to the issue above).

rebase: don't require destination if commands.rebase.requiredest=False

tests: add tests with commands.{update,rebase}.requiredest=False This shows how rebase is currently broken with commands.rebase.requiredest=False.

rebase: move state serialization to use unfiltered repo Now that rebasestate is serialized as part of the transaction, the repo state it sees is the version at the end of the transaction, which may have hidden nodes. Therefore, it's possible parts of the rebase commit set are no longer visible by the time the transaction is closing, which causes a filtered revision error in this code. I don't think state serialization should be blocked from accessing commits it knows exist, especially if all it's trying to do is get the hex of them, so let's use an unfiltered repo here. Unfortunately, the only known repro is with the fbamend Facebook extension, so I'm not sure how to repro it in core Mercurial for a test.

largefiles: avoid redundant standin() invocations There are some code paths, which apply standin() on same value multilpe times instead of using already standin()-ed value. "fstandin" is common name for "path to standin file" in lfutil.py, to avoid shadowing "standin()".

largefiles: replace hashrepofile by hashfile (API) There is only one user for the former, and repo.wjoin()-ed value is alread known by that user.

largefiles: call readstandin() with changectx itself instead of rev or node readstandin() takes "node" argument to get changectx by "repo[node]". There are some readstandin() invocations, which use ctx.node(), ctx.rev(), or '.' as "node" argument above, even though corresponded changectx object is already looked up on caller side. This patch calls readstandin() with already known changectx itself, to avoid meaningless re-construction of changectx (indirect case via copytostore() is also included). BTW, copytostore() uses "rev" argument only for readstandin() invocation. Therefore, this patch also renames it to "revorctx" to indicate that it can take not only revision ID or so but also changectx, for readability.

largefiles: omit redundant splitstandin() invocations There are 3 splitstandin() invocations in updatestandin() for same "standin" value.

largefiles: replace splitstandin() by isstandin() to omit str creation If splitstandin()-ed str itself isn't used, isstandin() should be used instead of it, to omit meaningless str creation.

largefiles: omit redundant isstandin() before splitstandin() There are many isstandin() invocations before splitstandin(). The former examines whether specified path starts with ".hglf/". The latter returns after ".hglf/" of specified path if it starts with that prefix, or returns None otherwise. Therefore, value returned by splitstandin() can be used for replacement of preceding isstandin(), and this replacement can omit redundant string comparison after isstandin().

misc: update descriptions about removed file for filectxfn Since 650b5b6e75ed, filectxfn for memctx should return None for removed file instead of raising IOError.

osx: always purge build/mercurial before starting build This prevents stray files from previous builds from polluting newer builds.

osx: use more paranoid quoting in test

osx: install completion scripts using install(1) to avoid umask badness This actually fixes some tests that were showing us umask badness that had been overlooked.

merge with stable

py3: prove `hg {add,addremove,commit} all work We can't do a second commit in a repo yet, because pure-Python bdiff is broken on Python 3. That is probably a good next step.

revsetlang: perform quoting using ui.escapestr instead of repr() This changes one of the doctest results, but I'm pretty sure on inspection that it's an equivalent result.

revsetlang: add docstring with some tests to _quote

revsetlang: move quoting function to not be a closure I'm about to change the implementation here and I'd like to add some doctests, which means this needs to not be hidden inside another function.

revsetlang: portably bytestring-ify another pair of int() calls

checkcode: enforce lowercase for extension docstring title This will ensure new extensions are consistent and `hg help -e` has a consistent output. I have to add a new group since the normal "pypats" will be filtered by "pyfilters", which will remove comments and docstrings.

logtoprocess: use lowercase for docstring title

journal: use lowercase for docstring title See the previous patch for why.

automv: use lowercase for docstring title The first line of docstring is used in `hg help -e`. Use lowercase to be consistent with most extensions.

util: enable hardlink for some BSD-family filesystems Since we can now detect filesystems on FreeBSD and OSX. Add their major filesystems (ufs, zfs for FreeBSD; hfs for OSX) to the hardlink whitelist.

osutil: report fstype for BSD and OSX

setup: use a more strict way to test BSD or OSX's statfs We want to use the `f_fstypename` field to get the filesystem type. Test it directly. The new macro HAVE_BSD_STATFS implys the old HAVE_SYS_MOUNT_H and HAVE_SYS_PARAM_H. So the latter ones are removed.

debugfsinfo: use util.getfstype This changes the behavior slightly. It now always prints fstype, regardless of whether osutil.getfstype exists.