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Pierre-Yves David ac782d2423 track-tags: introduce first bits of tags tracking during transaction
This changeset introduces detection of tags changes during transaction. When
this happens a 'tag_moved=1' argument is set for hooks, similar to what we do
for bookmarks and phases.

This code is disabled by default as there are still various performance
concerns.  Some require a smarter use of our existing tag caches and some other
require rework around the transaction logic to skip execution when unneeded.
These performance improvements have been delayed, I would like to be able to
experiment and stabilize the feature behavior first.

Later changesets will push the concept further and provide a way for hooks to
know what are the actual changes introduced by the transaction. Similar work
is needed for the other families of changes (bookmark, phase, obsolescence,
etc). Upgrade of the transaction logic will likely be performed at the same
time.

The current code can report some false positive when .hgtags file changes but
resulting tags are unchanged. This will be fixed in the next changeset.

For testing, we simply globally enable a hook in the tag test as all the
possible tag update cases should exist there. A couple of them show the false
positive mentioned above.

See in code documentation for more details.
2017-03-28 06:38:09 +02:00
contrib atexit: switch to home-grown implementation 2017-04-11 14:54:12 -07:00
doc ui: factor out ui.load() to create a ui without loading configs (API) 2016-10-22 14:35:10 +09:00
hgext show: make template option actually show up in help 2017-04-13 03:17:53 -07:00
hgext3rd extensions: also search for extension in the 'hgext3rd' package 2016-03-11 10:30:08 +00:00
i18n i18n-pt_BR: synchronized with 11b8e606c473 2017-03-02 11:08:20 -03:00
mercurial track-tags: introduce first bits of tags tracking during transaction 2017-03-28 06:38:09 +02:00
tests track-tags: introduce first bits of tags tracking during transaction 2017-03-28 06:38:09 +02:00
.editorconfig mercurial: add editorconfig 2016-04-05 18:10:33 +01:00
.hgignore perf: add asv benchmarks 2016-09-29 10:16:34 +02:00
.hgsigs Added signature for changeset 97cf34b7fc72 2017-04-03 17:34:24 -04:00
CONTRIBUTING contributing: add new file with a pointer to the wiki 2016-10-08 10:39:00 -04:00
CONTRIBUTORS Add note to CONTRIBUTORS file 2007-11-07 21:10:30 -06:00
COPYING COPYING: refresh with current address from fsf.org 2011-06-02 11:17:02 -05:00
hg hg: disable demandimport for py3 2016-05-11 23:24:41 +00:00
hgeditor spelling: trivial spell checking 2015-10-17 00:58:46 +02:00
hgweb.cgi urls: bulk-change primary website URLs 2015-09-30 15:43:49 -05:00
Makefile osx: always purge build/mercurial before starting build 2017-03-20 17:58:44 -04:00
README urls: bulk-change primary website URLs 2015-09-30 15:43:49 -05:00
setup.py statfs: change Linux feature detection 2017-03-24 14:59:19 -07:00

Mercurial
=========

Mercurial is a fast, easy to use, distributed revision control tool
for software developers.

Basic install:

 $ make            # see install targets
 $ make install    # do a system-wide install
 $ hg debuginstall # sanity-check setup
 $ hg              # see help

Running without installing:

 $ make local      # build for inplace usage
 $ ./hg --version  # should show the latest version

See https://mercurial-scm.org/ for detailed installation
instructions, platform-specific notes, and Mercurial user information.