hg-stable: mercurial/help/internals/censor.txt@f07aff7e8b5a (annotated)

31289 1b699a208cee internals: add some brief documentation about censor Augie Fackler <augie@google.com> parents: diff changeset	1	The censor system allows retroactively removing content from
1b699a208cee internals: add some brief documentation about censor Augie Fackler <augie@google.com> parents: diff changeset	2	files. Actually censoring a node requires using the censor extension,
1b699a208cee internals: add some brief documentation about censor Augie Fackler <augie@google.com> parents: diff changeset	3	but the functionality for handling censored nodes is partially in core.
1b699a208cee internals: add some brief documentation about censor Augie Fackler <augie@google.com> parents: diff changeset	4
1b699a208cee internals: add some brief documentation about censor Augie Fackler <augie@google.com> parents: diff changeset	5	Censored nodes in a filelog have the flag ``REVIDX_ISCENSORED`` set,
1b699a208cee internals: add some brief documentation about censor Augie Fackler <augie@google.com> parents: diff changeset	6	and the contents of the censored node are replaced with a censor
1b699a208cee internals: add some brief documentation about censor Augie Fackler <augie@google.com> parents: diff changeset	7	tombstone. For historical reasons, the tombstone is packed in the
1b699a208cee internals: add some brief documentation about censor Augie Fackler <augie@google.com> parents: diff changeset	8	filelog metadata field ``censored``. This allows censored nodes to be
1b699a208cee internals: add some brief documentation about censor Augie Fackler <augie@google.com> parents: diff changeset	9	(mostly) safely transmitted through old formats like changegroup
1b699a208cee internals: add some brief documentation about censor Augie Fackler <augie@google.com> parents: diff changeset	10	versions 1 and 2. When using changegroup formats older than 3, the
1b699a208cee internals: add some brief documentation about censor Augie Fackler <augie@google.com> parents: diff changeset	11	receiver is required to re-add the ``REVIDX_ISCENSORED`` flag when
1b699a208cee internals: add some brief documentation about censor Augie Fackler <augie@google.com> parents: diff changeset	12	storing the revision. This depends on the ``censored`` metadata key
1b699a208cee internals: add some brief documentation about censor Augie Fackler <augie@google.com> parents: diff changeset	13	never being used for anything other than censoring revisions, which is
1b699a208cee internals: add some brief documentation about censor Augie Fackler <augie@google.com> parents: diff changeset	14	true as of January 2017. Note that the revlog flag is the
1b699a208cee internals: add some brief documentation about censor Augie Fackler <augie@google.com> parents: diff changeset	15	authoritative marker of a censored node: the tombstone should only be
1b699a208cee internals: add some brief documentation about censor Augie Fackler <augie@google.com> parents: diff changeset	16	consulted when looking for a reason a node was censored or when revlog
1b699a208cee internals: add some brief documentation about censor Augie Fackler <augie@google.com> parents: diff changeset	17	flags are unavailable as mentioned above.
1b699a208cee internals: add some brief documentation about censor Augie Fackler <augie@google.com> parents: diff changeset	18
1b699a208cee internals: add some brief documentation about censor Augie Fackler <augie@google.com> parents: diff changeset	19	The tombstone data is a free-form string. It's expected that users of
1b699a208cee internals: add some brief documentation about censor Augie Fackler <augie@google.com> parents: diff changeset	20	censor will want to record the reason for censoring a node in the
1b699a208cee internals: add some brief documentation about censor Augie Fackler <augie@google.com> parents: diff changeset	21	tombstone. Censored nodes must be able to fit in the size of the
1b699a208cee internals: add some brief documentation about censor Augie Fackler <augie@google.com> parents: diff changeset	22	content being censored.

author	Gregory Szorc <gregory.szorc@gmail.com>
	Sat, 26 Jan 2019 14:00:42 -0800
changeset 41433	f07aff7e8b5a
parent 31289	1b699a208cee
permissions	-rw-r--r--