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uncommit: add config option to keep commit by default...
uncommit: add config option to keep commit by default We have a Google-internal extension that keeps track of "review units" (like Phabricator reviews, or Gerrit's Change-Id). This information is stored outside of the commit. It is updated with rewrites. Every now and then we get reports from users who are confused because `hg uncommit` lost track of their review. Keeping the empty commit by default would reduce this confusion. It may also cause confusion about the empty commit. This patch adds a config option that lets us easily test both behaviors on our users. Differential Revision: https://phab.mercurial-scm.org/D5970
Augie Fackler - - Load All Authors

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censor.txt
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/ mercurial / help / internals / censor.txt
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The censor system allows retroactively removing content from
files. Actually censoring a node requires using the censor extension,
but the functionality for handling censored nodes is partially in core.
Censored nodes in a filelog have the flag ``REVIDX_ISCENSORED`` set,
and the contents of the censored node are replaced with a censor
tombstone. For historical reasons, the tombstone is packed in the
filelog metadata field ``censored``. This allows censored nodes to be
(mostly) safely transmitted through old formats like changegroup
versions 1 and 2. When using changegroup formats older than 3, the
receiver is required to re-add the ``REVIDX_ISCENSORED`` flag when
storing the revision. This depends on the ``censored`` metadata key
never being used for anything other than censoring revisions, which is
true as of January 2017. Note that the revlog flag is the
authoritative marker of a censored node: the tombstone should only be
consulted when looking for a reason a node was censored or when revlog
flags are unavailable as mentioned above.
The tombstone data is a free-form string. It's expected that users of
censor will want to record the reason for censoring a node in the
tombstone. Censored nodes must be able to fit in the size of the
content being censored.