bdiff: include compat.h in header to define ssize_t Before ff4c9c6263de, compat.h was included first so it happened to work. But we shouldn't rely on the include order.

test: add an extra case for obsolescence distributed case This changeset introduces a new documented test case for a distributed obsolescence scenario. The scenario involves a simple case where some obsolescence markers are retrieved before the changeset they affect. See the test case documentation for details. We also test variants where the changesets are added from a bundle.

test: add a test file dedicated to an important distributed case This test file introduces documented test case for obsolescence markers usage that are important to distributed workflow cases. In the distributed case, new changesets, markers, and phases can be added in orders that would not happen during the local only usage. Documenting these scenarios and test them is important as we make progress with various obsolescence aspects.

repoview: remove incorrect documentation of the function In repoview.py, computeunserved() and computemutable() functions had the same documentation. The documentation of computemutable() is wrong. I was unable to write documentation for the function but it's better to not having the documentation than having it wrong. Differential Revision: https://phab.mercurial-scm.org/D1016

check-code: suggest pycompat.is(posix|windows|darwin) Differential Revision: https://phab.mercurial-scm.org/D1037

codemod: use pycompat.isdarwin This is done by: sed -i "s/pycompat\.sysplatform == 'darwin'/pycompat.isdarwin/" **/*.py Plus a manual change to `sslutil.py` which involves indentation change that cannot be done by `sed`. Differential Revision: https://phab.mercurial-scm.org/D1035

codemod: use pycompat.isposix This is done by: sed -i "s/pycompat\.osname == 'posix'/pycompat.isposix/" **/*.py Differential Revision: https://phab.mercurial-scm.org/D1036

codemod: use pycompat.iswindows This is done by: sed -i "s/pycompat\.osname == 'nt'/pycompat.iswindows/" **/*.py sed -i "s/pycompat\.osname != 'nt'/not pycompat.iswindows/" **/*.py sed -i 's/pycompat.osname == "nt"/pycompat.iswindows/' **/*.py Differential Revision: https://phab.mercurial-scm.org/D1034

pycompat: define operating system constants As suggested by Ryan in D1019, it's cleaner if we use defined constants instead of `osname == 'nt'` everywhere. Differential Revision: https://phab.mercurial-scm.org/D1033

hgweb: do not import uuid immediately to avoid its side effect With hgdemandimport disabled (chg's case), `import uuid` has an immediate side effect calling `ctypes.util.find_library` trying to locate the `libuuid` library. This happens at `import` time before `dispatch.run()`. The call trace is like: File "hg/hg", line 54, in <module> from mercurial import ( File "hg/mercurial/dispatch.py", line 24, in <module> from . import ( File "hg/mercurial/commands.py", line 23, in <module> from . import ( File "hg/mercurial/help.py", line 33, in <module> from .hgweb import ( File "hg/mercurial/hgweb/__init__.py", line 20, in <module> from . import ( File "hg/mercurial/hgweb/hgweb_mod.py", line 14, in <module> from .common import ( File "hg/mercurial/hgweb/common.py", line 15, in <module> import uuid File "/usr/lib64/python2.7/uuid.py", line 404, in <module> lib = ctypes.CDLL(ctypes.util.find_library(libname)) The problem is, `ctypes.util.find_library` will execute `sh -c '/sbin/ldconfig -p 2>/dev/null'` on Python <= 2.7.12. The output of `sh` may pollute the terminal: shell-init: error retrieving current directory: getcwd: cannot access parent directories: No such file or directory This patch moves `import uuid` so its side-effect can only happen after the cwd check in `dispatch._getlocal`. Therefore the terminal won't be polluted by importing `uuid`. Differential Revision: https://phab.mercurial-scm.org/D1024