kernel/git - git - PowerEL Git System

Tree: 08b984fb54

Author	SHA1	Message	Date
Junio C Hamano	1891261ed3	Update describe documentation. Signed-off-by: Junio C Hamano <junkio@cox.net>	18 years ago
Shawn O. Pearce	8713ab3079	Improve git-describe performance by reducing revision listing. My prior version of git-describe ran very slowly on even reasonably sized projects like git.git and linux.git as it tended to identify a large number of possible tags and then needed to generate the revision list for each of those tags to sort them and select the best tag to describe the input commit. All we really need is the number of commits in the input revision which are not in the tag. We can generate these counts during the revision walking and tag matching loop by assigning a color to each tag and coloring the commits as we walk them. This limits us to identifying no more than 26 possible tags, as there is limited space available within the flags field of struct commit. The limitation of 26 possible tags is hopefully not going to be a problem in real usage, as most projects won't create 26 maintenance releases and merge them back into a development trunk after the development trunk was tagged with a release candidate tag. If that does occur git-describe will start to revert to its old behavior of using the newer maintenance release tag to describe the development trunk, rather than the development trunk's own tag. The suggested workaround would be to retag the development trunk's tip. However since even 26 possible tags can take a while to generate a description for on some projects I'm defaulting the limit to 10 but offering the user --candidates to increase the number of possible matches if they need a more accurate result. I specifically chose 10 for the default as it seems unlikely projects will have more than 10 maintenance releases merged into a development trunk before retagging the development trunk, and it seems to perform about the same on linux.git as v1.4.4.4 git-describe. A large amount of debugging information was also added during the development of this change, so I've left it in to be toggled on with --debug. It may be useful to the end user to help them understand why git-describe took one particular tag over another. Signed-off-by: Shawn O. Pearce <spearce@spearce.org> Signed-off-by: Junio C Hamano <junkio@cox.net>	18 years ago
Francis Daly	3742506578	Some doc typo fixes All should be clear enough, except perhaps committish / commitish. I just kept the more-used one within the current docs. [jc: with rephrasing of check-ref-format description later discussed on the list] Signed-off-by: Francis Daly <francis@daoine.org> Signed-off-by: Junio C Hamano <junkio@cox.net>	19 years ago
Fredrik Kuivinen	7bd7f2804d	Remove trailing dot after short description Signed-off-by: Fredrik Kuivinen <freku045@student.liu.se> Signed-off-by: Junio C Hamano <junkio@cox.net>	19 years ago
Junio C Hamano	c06818e20a	git-describe: documentation. Signed-off-by: Junio C Hamano <junkio@cox.net>	19 years ago