Mercurial > hg
view mercurial/help/revisions.txt @ 28825:87c6ad2251d8
date: reallow negative timestamp, fix for Windows buggy gmtime() (issue2513)
DVCS are very useful to store various texts (as legislation) written before
Unix epoch. Fri, 13 Dec 1901 is a nice gain over Thu, 01 Jan 1970.
Revert dd24f3e7ca9e and e1002cf9fe54, fix c208dcd0f709. Add tests.
author | Florent Gallaire <fgallaire@gmail.com> |
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date | Fri, 08 Apr 2016 14:11:03 +0200 |
parents | 4edd179fefb8 |
children | bbb5cc55ab8b |
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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 open branch head of that branch - or if they are all closed, the tipmost closed head of the 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.