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Currently when a user does a conflict resolution and ends it (in any way that calls 'git rerere' again) with a file 'rerere' can't handle, subsequent rerere operations that are interested in that path, such as 'rerere clear' or 'rerere forget <path>' will fail, or even worse in the case of 'rerere clear' segfault. Such states include nested conflicts, or a conflict marker that doesn't have any match. This is because 'git rerere' calculates a conflict file and writes it to the MERGE_RR file. When the user then changes the file in any way rerere can't handle, and then calls 'git rerere' on it again to record the conflict resolution, the handle_file function fails, and removes the 'preimage' file in the rr-cache in the process, while leaving the ID in the MERGE_RR file. Now when 'rerere clear' is run, it reads the ID from the MERGE_RR file, however the 'fit_variant' function for the ID is never called as the 'preimage' file does not exist anymore. This means 'collection->status' in 'has_rerere_resolution' is NULL, and the command will crash. To fix this, remove the rerere ID from the MERGE_RR file in the case when we can't handle it, just after the 'preimage' file was removed and remove the corresponding variant from .git/rr-cache/. Removing it unconditionally is fine here, because if the user would have resolved the conflict and ran rerere, the entry would no longer be in the MERGE_RR file, so we wouldn't have this problem in the first place, while if the conflict was not resolved. Currently there is nothing left in this folder, as the 'preimage' was already deleted by the 'handle_file' function, so 'remove_variant' is a no-op. Still call the function, to make sure we clean everything up, in case we add some other files corresponding to a variant in the future. Note that other variants that have the same conflict ID will not be touched. Signed-off-by: Thomas Gummerer <t.gummerer@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
Git - fast, scalable, distributed revision control system
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 version 2 (some parts of it are under different licenses, compatible with the GPLv2). It was originally written by Linus Torvalds with help of a group of hackers around the net.
Please read the file INSTALL for installation instructions.
Many Git online resources are accessible from https://git-scm.com/ including full documentation and Git related tools.
See Documentation/gittutorial.txt to get started, then see
Documentation/giteveryday.txt for a useful minimum set of commands, and
Documentation/git-.txt for documentation of each command.
If git has been correctly installed, then the tutorial can also be
read with man gittutorial or git help tutorial, and the
documentation of each command with man git-<commandname> or git help <commandname>.
CVS users may also want to read Documentation/gitcvs-migration.txt
(man gitcvs-migration or git help cvs-migration if git is
installed).
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 (read Documentation/SubmittingPatches for instructions on patch submission). 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 https://public-inbox.org/git/, http://marc.info/?l=git and other archival sites.
Issues which are security relevant should be disclosed privately to the Git Security mailing list git-security@googlegroups.com.
The maintainer frequently sends the "What's cooking" reports that list the current status of various development topics to the mailing list. The discussion following them give a good reference for project status, development direction and remaining tasks.
The name "git" was given by Linus Torvalds when he wrote the very first version. He described the tool as "the stupid content tracker" and the name as (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