mercurial/help/revisions.txt

blackbox: log incoming changes via ui.log()

Logs incoming changes to a repo to ui.log(). Includes the number of changes
and the hashes of the heads after the new changes.

Example log line:
2013/02/09 08:35:19 durham> 1 incoming changes - new heads: cb9a9f314b8b

Currently the blackbox logs the unix user that is performing the push/pull.
It would be nice to log the http authorized user as well so it works with
hgweb, but that's outside the scope of this commit.

Mercurial supports several ways to specify individual revisions.

A plain integer is treated as a revision number. Negative integers are
treated as sequential offsets from the tip, with -1 denoting the tip,
-2 denoting the revision prior to the tip, and so forth.

A 40-digit hexadecimal string is treated as a unique revision
identifier.

A hexadecimal string less than 40 characters long is treated as a
unique revision identifier and is referred to as a short-form
identifier. A short-form identifier is only valid if it is the prefix
of exactly one full-length identifier.

Any other string is treated as a bookmark, tag, or branch name. A
bookmark is a movable pointer to a revision. A tag is a permanent name
associated with a revision. A branch name denotes the tipmost revision
of that branch. Bookmark, tag, and branch names must not contain the ":"
character.

The reserved name "tip" always identifies the most recent revision.

The reserved name "null" indicates the null revision. This is the
revision of an empty repository, and the parent of revision 0.

The reserved name "." indicates the working directory parent. If no
working directory is checked out, it is equivalent to null. If an
uncommitted merge is in progress, "." is the revision of the first
parent.