graft: add --dry-run support (issue3362)

repair: allow giving strip backup a different name So the user can differentiate amend backups from the rest.

encoding: add fast-path for ASCII lowercase

perf: add case collision auditor perf

util.h: unify some common platform tweaks

util.h: move Py_ssize_t bits from mpatch.c

plan9: initial support for plan 9 from bell labs This patch contains support for Plan 9 from Bell Labs. A README is provided in contrib/plan9 which describes the port in greater detail. A new extension is also provided named factotum which permits the factotum(4) authentication agent to provide credentials for HTTP repositories. This extension is also applicable to other POSIX platforms which make use of Plan 9 from User Space (aka plan9ports).

util.h: add a typedef for Py_ssize_t with Python 2.4

log: bypass file scan part of fastpath when no files This avoids loading dirstate parents, looking up p1 rev, and loading p1 manifest to match against an empty matcher.

cmdutil: use context instead of lookup

scmutil: use context instead of lookup

localrepo: lookup now goes through context

context: use rev for changelog lookup Faster when we're doing numeric scanning

context: internalize lookup logic This allows us to avoid doing rev->node->rev lookups on silly instances like "0", which end up caching the whole nodemap.

revlog: allow retrieving contents by revision number

revlog: add hasnode helper method

merge with stable

merge with crew

tags: defer tag validation until repo.tags() is called Before, we were validating all tags for any tag operation, which meant building a (nearly) full node->tag lookup tree for most operations.

parsers: fix a memleak, and add a clearcaches method to the index This change also fixes a nasty memory leak: previously, self->caches was not being freed. The new clearcaches method lets us benchmark with finer granularity, as it lets us separate the cost of loading a revlog index from those of populating and accessing the cache data structures.

hghave: remove symlink test made useless by ac0da5caebec

tests: disable progress estimate in test-debugbuilddag.t If the command takes long enough, including 'estimate' in the format will add some more data to the progress bar output, and make the test fail. See e.g. https://buildd.debian.org/status/fetch.php?pkg=mercurial&arch=kfreebsd-amd64&ver=2.1.2-2&stamp=1333493711

ui: swallow EBADF on stderr ui.write_err already swallows EPIPE and EIO if a write to stderr fails. On Mac OS X at least, a write to a closed file descriptor results in EBADF. Before this patch, hg would exit with status 1 if a write to stderr failed during startup (e.g. while trying to print a warning about not finding an extension): $ ./hg --config extensions.foo= version 2>&-; echo $? 1 With this patch, it correctly swallows stderr and continues to run the command: $ ./hg --config extensions.foo= version 2>&- Mercurial Distributed SCM (version 2.1) ...

mq: use list of already known target files instead of matching object for diff 'hg qnew' passes matching object to 'patch.diff()' to specify target filenames, and it causes 'dirstate.walk()' via 'repo.status()' in 'patch.diff()'. but target files are already known before 'patch.diff()' invocation. to avoid useless 'dirstate.walk()' invocation, this patch uses 'changes' argument to pass already known target files to 'patch.diff()' instead of 'match' argument. 'changes' argument of 'patch.diff()' should have lists for modified, added and removed files separately, so this patch saves status of '.hgsubstate' before commit, and put it into appropriate list in 'changes'.

mq: use exact matching in the second dirstate walking for efficiency of 'qnew' 'hg qnew' with pattern/-I/-X creates matching object with them, and uses it twice for 'dirstate.walk()': via 'repo.status()' and 'repo.commit()'. this may cause full manifest scan in the second 'dirstate.walk()', even though mq already knows complete target filenames at the first 'dirstate.walk()'. this patch creates exact matching object also in this case, and use it at 'repo.commit()' invocation to avoid full manifest scan in the second 'dirstate.walk()'. even though 'inclsubs' is added to 'pats' for original matching object, it is also passed to exact matching object, because subrepositories are deleted from result of 'dirstate.walk()' at the end of it.

tests: avoid test-hup hanging on AIX test-hup hangs on AIX. Under ksh89 on AIX (the default shell), echo Hello; while [ ! -s not-there ]; do true; done produces no output while the loop executes. Replacing 'true' with 'sleep 0' fixes, as does using a less broken shell. ksh93 is fine. Update check-code.py to look for this, and make same change in test-serve.t. In fact test-serve works fine, probably because of additional commands between echo and the loop, but that's a subtlety not easy to test for.

parsers: incrementally parse the revlog index in C We only parse entries in a revlog index file when they are actually needed, and cache them when first requested. This makes a huge difference to performance on large revlogs when accessing the tip revision or performing a handful of numeric lookups (very common cases). For instance, "hg --time tip --template {node}" on a tree with 300,000 revs takes 0.15 before, 0.02 after. Even for revlog-intensive operations (e.g. running "hg log" to completion), the lazy approach is about 1% faster than the eager parse_index2.

mdiff: fix diff header generation for files with spaces (issue3357) diff ---/+++ should end filenames with a TAB when they contain spaces. Current code failed to do so when only the +++ file had spaces. This only happened with git renames from a name without space to one with space.