perf: support obtaining contexts from perfrevset Previously, perfrevset called repo.revs(), which only returns integer revisions. Many revset consumers call repo.set(), which returns changectx instances. Or they obtain a context manually later. Since obtaining changectx instances when evaluating revsets is common, this patch adds support for benchmarking this use case. While we added an if conditional for every benchmark loop, it doesn't appear to matter since revset evaluation dwarfs the cost of a single if.

localrepo: improve docstring for revset methods revs() doesn't return a list. Also document what its arguments do. Also clarify that set() is just a convenience wrapper around revs().

revlog: improve documentation There are a lot of functions and variables doing similar things. Document the role and functionality of each to make it easier to grok.

demandimport: don't enable when running under PyPy On demand importing doesn't work with PyPy for some reason. Don't honor requests to enable demand importing when running under PyPy.

ui.write: don't clear progress bar when writing to a buffer ui.write() has 2 modes: buffered and unbuffered. In buffered mode, we capture output before writing it. This is how changeset printing works, for example. Previously, we were potentially clearing the progress bar for every call to ui.write(). In buffered mode, this clearing was useless because the clearing function would be called again before actually writing the buffered data. This patch stops the useless calling of _progclear() unless we are actually writing data. During changeset printing with the default template, this removes ~6 function calls per changeset, making changeset printing slightly faster. before: 23.76s after: 23.35s delta: -0.41s (98.3% of original)

test-resolve: fix '--tool f' invocation for Windows Windows can't invoke a python script directly, so invoke sh.exe instead. According to sid0, the output changes are due to the fact that 'f' is no longer being passed all of the args that it was, but these changes aren't essential to the test [1]. [1] https://selenic.com/pipermail/mercurial-devel/2015-November/075768.html

util.datestr: use divmod() We were computing the quotient and remainder of a division operation separately. The built-in divmod() function allows us to do this with a single function call. Do that.

cmdutil.changeset_printer: pass context into showpatch() Before, we passed the node then subsequently performed a lookup on repo.changelog. We already has the context available, so just pass it in. This does result in a small performance win. But I doubt it will show up anywhere because diff[stat] calculation will dwarf the time spent to create a changectx. Still, we should be creating fewer changectx out of principle.

context: avoid extra parents lookups Resolving parents requires reading from the changelog, which is a few attributes and function calls away. Parents lookup occurs surprisingly often. Micro optimizing the code to avoid redundant lookups of parents appears to make `hg log` on my Firefox repo a little faster: before: 24.91s after: 23.76s delta: -1.15s (95.4% of original)

context: optimize _parents() This patch avoids some extra attribute lookups and list mutations. This micro-optimization seems to result in a minor speedup for `hg log` on my Firefox repo: before: 25.35s after: 24.91s delta: -0.44s (98% of original) Not the biggest gain. But every little bit helps.

test-histedit: $TESTTMP quoting fixes for Windows Without this, C:\path\to\test is converted into C:pathtotest. Since $TESTTMP appears in output, seems to work in some places without quotes, and is also used within a larger quote block (see test-rebase-collapse.t, ~line 160), I'm not sure what a check-code rule would look like (or even if it is feasible).

lsprof: support PyPy (issue4573) PyPy's _lsprof module doesn't export a "profiler_entry" symbol. This patch treats the symbol as optional and falls back to verifying the attribute is present on the first entry in the collected data as part of validation. There is a chance not every entry will contain the requested sort attribute. But, this patch does unbust lsprof on PyPy for the hg commands I've tested, so I assume it is sufficient. It's certainly better than the ImportError we encountered before. As part of the import refactor, I snuck in the addition of absolute_import.

base85: clean up function definition style Cleanup performed with clang-format.

rebase: use bookmarks.recordchange instead of bookmarks.write Before this patch we were using the old api bookmarks.write instead of bookmarks.recordchange at the end of rebase operations. We move clearstatus within the transaction to make it easier for extensions that wrap transactions operations.

rebase: indentation change to make the next patch more legible We put the code to be indented in the next patch in a "if True:" block to make it easier to review.

test-run-tests: conditionalize the $TESTDIR check for Windows separator The variable uniformly uses '\' separators, so the straight equality check with '/' separating the last component fails. It also doesn't like having the quote appear in the middle of the string when testing.

test-context: conditionalize the workingfilectx date printing for Windows Starting with 13272104bb07, the output changed on Windows: --- e:/Projects/hg/tests/test-context.py.out +++ e:/Projects/hg/tests/test-context.py.err @@ -1,4 +1,4 @@ -workingfilectx.date = (1000, 0) +workingfilectx.date = (1000L, 0) ASCII : Gr?ezi! Latin-1 : Grⁿezi! UTF-8 : Gr├╝ezi! Since int and long are both 32 bit on Windows, this seems harmless in practice other than the previous test failure.

test-mq-qrefresh: drop single quoting of HGEDITOR value for Windows This was failing with: sh: $TESTTMP/checkvisibility.sh: No such file or directory

test-import: don't use printf to append an extension to $HGRCPATH The extension was failing to load on Windows because $TESTTMP contains a path component 'test', prefixed by a path separator '\'. That combination ends up converted to "...<tab>est...".

test-ssh: stop quoting dummyssh invocation for Windows The other invocations aren't quoted, and Windows doesn't like the single quotes: diff --git a/tests/test-ssh.t b/tests/test-ssh.t --- a/tests/test-ssh.t +++ b/tests/test-ssh.t @@ -520,20 +520,8 @@ remote hook failure is attributed to rem $ echo "pretxnchangegroup.fail = python:$TESTTMP/failhook:hook" >> remote/.hg/hgrc $ hg -q --config ui.ssh="python '$TESTDIR/dummyssh'" clone ssh://user@dummy/remote hookout + abort: no suitable response from remote hg! + [255] $ cd hookout + $TESTTMP.sh: line 264: cd: hookout: No such file or directory $ touch hookfailure - $ hg -q commit -A -m 'remote hook failure' ....

strip: use repo._bookmarks.recordchange instead of repo._bookmarks.write Before this patch, strip was using repo._bookmarks.write. This patch replaces this code with the recommended way of saving bookmarks changes: repo._bookmarks.recordchange.

histedit: make use of bookmarks.recordchange instead of bookmarks.write Before this patch we were using the old api bookmarks.write, this patches replaces its usage by bookmarks.recordchange, the new api to record bookmark changes.

largefiles: fall back to the original for change/delete conflicts The largefiles merge code (currently) does not handle change/delete conflicts. So fall back to regular filemerge in that case. Making this code handle change/delete conflicts is left as an exercise for the future.

mergestate.add: store absentfilectxes as nullhex This is the most natural way to represent these files. We also need to make sure we don't try to store these files in the merge store.