Extension authors (notably at companies using hg) have been
cargo-culting the `testedwith = 'internal'` bit from hg's own
extensions, which then defeats our "file bugs over here" logic in
dispatch. Let's be more aggressive about trying to give extension
authors a hint about what testedwith should say.
According to recent "filectx.data()" implementation, "censor.policy"
should be configured as "ignore" to ignore error at censored file:
"censor.allow" seems outdated name.
The censor command is a core extension which can replace the contents of a
historical file revision with a censor "tombstone" which can be exchanged
with older clients in place of the real revision data. The command rewrites
the filelog by copying revision-by-revision.
Care must be taken to expand the fulltext of the children of the censored
revision before copying them to the new filelog; they might be stored as
deltas against the uncensored revision, and those deltas will be invalidated.
For more background on the censorship feature design, see:
http://mercurial.selenic.com/wiki/CensorPlan
