localrepo: commit: avoid calling expensive ancestor function when p1 is nullrev

ancestors: remove unnecessary handling of 'left' If one of the initial nodes also is an ancestor then that most be the only ancestor. There is no need for additional bookkeeping.

parsers: remove unreachable and invalid code in index_ancestors The function normally returns a list. Returning a single element instead of a list with one element would be weird.

cmdutil: implemented new lazy increasingwindows Now log can work in a lazy way and get results as soon as they are processed. Performance Benchmarking: $ time hg log -l1 -qr "branch(default)" 0:9117c6561b0b real 0m2.303s user 0m2.252s sys 0m0.048s $ time ./hg log -l1 -qr "branch(default)" 0:9117c6561b0b real 0m0.238s user 0m0.199s sys 0m0.037s

revset: added __nonzero__ method to lazyset Now it doesn't have to go through all the set and can return lazily as soon as it finds one element.

scmutil: changed revrange to return lazysets for new style revsets When there is an old style revset or both it will still return a baseset. This may be changed in later patches.

phases: make order of debug output 'removing unknown node' deterministic

comments: fix minor spelling issues found with spell checker

hooks: for python hooks, consistently use __name__ etc as name, not the repr There is no reason to expose unnecessary Python implementation details and memory locations, also not in debug mode. readablefunc was already creating a nice name - we move that functionality up and reuse it. We consider having a __call__ and being types.FunctionType sufficiently similar and unify these two to just using the existing check for __call__.

hooks: move logging of hook name to after we have found the hook We do not expect the finding process to take a significant amount of time - it is the execution time of the hook we care about.

rebase: show nice list instead of set repr for 'computed skipped revs' debug

rebase: fix 'rebase onto %d starting from %s' - show root instead of list repr The debug statement is already in a 'for root in roots' so it was probably the intention to show root instead of roots. Do that.

log: describe graph symbols in the help I wondered what 'x' meant and didn't find it described anywhere.

tests: backout a82de9dc4f77, debugstacktrace is now stable, drop workaround

util: debugstacktrace, flush before and after writing Close another stream (default stdout, which often is buffered) before writing to the primary stream (default stderr, which often is unbuffered). The primary stream is also flushed after writing (in case it is buffered). This fixes non-deterministic output order, especially on windows.

run-tests.py: work when --with-hg is set to system hg Previously we'd always assume that --with-hg is a script in a user directory, and would write out a 'python' symlink to the same location. That didn't work if --with-hg was set to a system installation of hg, e.g. /usr/bin/hg. Introduce a TMPBINDIR directory which is used to write out the python symlink.

revset: added cached generated list on generatorset This allows to iterate the generatorset more than once.

templater: shorten pure integers Originally, the addition of the 'shorten' template function in 9c6b86dd2ed2 would not consider pure integers for shortening. This patch considers two simple cases: when the integer starts with zero (which is parsed by Mercurial as a hash first) and when the integer is larger than the tip (obviously not a rev).

revset: fixed bug where log -f was taking too long to return

merge with stable

revset: added generatorset class with cached __contains__ method

pathencode: eliminate signed integer warnings Compiling mercurial with the Sun Studio compiler gives seven copies of the following warning on pathencode.c: line 533: warning: initializer will be sign-extended: -1 Using explicit unsigned literals silences it.

revset: changed last implementation to use lazy classes Instead of using getitem just reverse the revision list and get the first 'lim' elements. With classes like spanset which are easily reversible this will work faster. Performance Benchmarking: $ time hg log -qr "last(all())" ... real 0m0.569s user 0m0.447s sys 0m0.122s $ time ./hg log -qr "last(all())" ... real 0m0.215s user 0m0.150s sys 0m0.063s

merge with stable