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In git.git repository, "git-name-rev v1.3.0~158" cannot name the rev, while adjacent revs can be named. This was because it gives up traversal from the tips of existing refs as soon as it sees a commit that has older commit timestamp than what is being named. This is usually a good heuristics, but v1.3.0~158 has a slightly older commit timestamp than v1.3.0~157 (i.e. it's child), as these two were made in a separate repostiory (in fact, in a different continent). This adds a hardcoded slop value (1 day) to the cut-off heuristics to work this kind of problem around. The current algorithm essentially runs around from the available tips down to ancient commits and names every single rev available that are newer than cut-off date, so a single day slop would not add that much overhead in repositories with long enough history where the performance of name-rev matters. I think the algorithm could be made a bit smarter by deepening the graph on demand as a new commit is asked to be named (this would require rewriting of name_rev() function not to recurse itself but use a traversal list like revision.c traverser does), but that would be a separate issue. Acked-by: Johannes Schindelin <Johannes.Schindelin@gmx.de> Signed-off-by: Junio C Hamano <junkio@cox.net>
//////////////////////////////////////////////////////////////// GIT - the stupid content tracker //////////////////////////////////////////////////////////////// "git" can mean anything, depending on your mood. - random three-letter combination that is pronounceable, and not actually used by any common UNIX command. The fact that it is a mispronunciation of "get" may or may not be relevant. - stupid. contemptible and despicable. simple. Take your pick from the dictionary of slang. - "global information tracker": you're in a good mood, and it actually works for you. Angels sing, and a light suddenly fills the room. - "goddamn idiotic truckload of sh*t": when it breaks Git is a fast, scalable, distributed revision control system with an unusually rich command set that provides both high-level operations and full access to internals. Git is an Open Source project covered by the GNU General Public License. It was originally written by Linus Torvalds with help of a group of hackers around the net. It is currently maintained by Junio C Hamano. Please read the file INSTALL for installation instructions. See Documentation/tutorial.txt to get started, then see Documentation/everyday.txt for a useful minimum set of commands, and "man git-commandname" for documentation of each command. CVS users may also want to read Documentation/cvs-migration.txt. Many Git online resources are accessible from http://git.or.cz/ including full documentation and Git related tools. The user discussion and development of Git take place on the Git mailing list -- everyone is welcome to post bug reports, feature requests, comments and patches to git@vger.kernel.org. To subscribe to the list, send an email with just "subscribe git" in the body to majordomo@vger.kernel.org. The mailing list archives are available at http://marc.theaimsgroup.com/?l=git and other archival sites. The messages titled "A note from the maintainer", "What's in git.git (stable)" and "What's cooking in git.git (topics)" and the discussion following them on the mailing list give a good reference for project status, development direction and remaining tasks.