A "patch ID" is nothing but a SHA1 of the diff associated with a patch,
with whitespace and line numbers ignored. As such, it's "reasonably
stable", but at the same time also reasonably unique, ie two patches
that have the same "patch ID" are almost guaranteed to be the same
thing.
IOW, you can use this thing to look for likely duplicate commits.
This patch addresses the problem reported by Paul Mackerras such that --merge-order
did not report the last root of a graph with merge of two independent roots.
Signed-off-by: Jon Seymour <jon.seymour@gmail.com>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
git-rev-list --merge-order is omitting one of the roots when
displaying a merge containing two distinct roots.
A subsequent patch will fix the problem.
Signed-off-by: Jon Seymour <jon.seymour@gmail.com>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
We used to ignore unreachable tags, which just causes problems: it makes
"git prune" leave them around, but since we'll have prune everything
that tag points to, the tag object really should be removed too.
So remove the code that made us think tags were always reachable.
The sensible cleanup of the in-memory storage order of commit parents broke the --merge-order
code which was dependent on the previous behaviour of parse_commit().
This patch restores the correctness --merge-order behaviour by taking account of the
new behaviour of parse_commit.
Signed-off-by: Jon Seymour <jon.seymour@gmail.com>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
gitk is really quite incredibly cool, and is great for visualizing what
is going on in a git repository. It's especially useful when you are
looking at what has changed since a particular version, since it
gracefully handles partial trees (and this also avoids the expense of
looking at _all_ changes in a big project).
For example, to see what changed in a merge after a "git pull", do
gitk ORIG_HEAD..
to see only the new things. Or you can simply do "gitk v2.6.12.." to
see what has changed since the v2.6.12 tag etc.
This merge itself is pretty interesting too, since it shows off a
feature of git itself that is incredibly cool: you can merge a
_separate_ git project into another git project. Not only does this
keep all the history of the original project, it also makes it possible
to continue to merge with the original project and the union of the two
projects.
I don't think anybody else can do that.
This adds tests (which also serves demonstration) for the --stat
and --summary flags to the git-apply command.
Signed-off-by: Junio C Hamano <junkio@cox.net>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Typical expected usage is "git-apply --stat --summary" to show
diffstat plus dense description of information available in git
extended headers, such as creations, renames, and mode changes.
Signed-off-by: Junio C Hamano <junkio@cox.net>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
When a patch is a git extended rename/copy patch, "git-apply
--stat" showed the old filename. Change it to show the new
filename, because most of the time we are interested in looking
at the resulting tree.
Signed-off-by: Junio C Hamano <junkio@cox.net>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Applying Andrew's latest patch-bomb showed us failing miserably if a new
subdirectory needed to be created.. That said, it's uncommon enough
that it's worth optimistically assuming it won't be needed, and then
creating the subdirectories only on failure.
This adds support for refs to http-pull, both the -w option and reading
the target from a served file.
Signed-off-by: Daniel Barkalow <barkalow@iabervon.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Make pull fetch whatever is specified, parse it to figure out what it is, and
then process it appropriately. This also supports getting tag objects, and
getting whatever they tag.
Signed-off-by: Daniel Barkalow <barkalow@iabervon.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Handle parsing a tag for a non-present object. This adds a function to lookup
an object with lookup_* for * in a string, so that it can get the right storage
based on the "type" line in the tag.
Signed-off-by: Daniel Barkalow <barkalow@iabervon.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
With --header, git-rev-list gives us the contents of the commit
in-line, so we don't need to exec a git-cat-file to get it, and we
don't need the readobj command either.
Also fixed a residual problem with handling the commit that
has a parent listed twice.
We codify the following different heads (in addition to the main "HEAD",
which points to the current branch, of course):
- FETCH_HEAD
Populated by "git fetch"
- ORIG_HEAD
The old HEAD before a "git pull/resolve" (successful or not)
- LAST_MERGE
The HEAD we're currently merging in "git pull/resolve"
- MERGE_HEAD
The previous head of a unresolved "git pull", which gets committed by
a "git commit" after manually resolving the result
We used to have "MERGE_HEAD" be populated directly by the fetch, and we
removed ORIG_HEAD and LAST_MERGE too aggressively.
Here is a patch that fixes several gcc4 warnings about different signedness,
all between char and unsigned char. I tried to keep the patch minimal
so resertod to casts in three places.
Signed-off-by: Mika Kukkonen <mikukkon@iki.fi>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
It is careful by default and refuses to overwrite old info, but if you
want to force everything to be re-read, use the "-f" flag.
Some day I'll make it take individual filenames too. Right now
it's all-or-nothing.
Current version would spin forever and exhaust memory while attempting
to sort all files from all revisions at once, until it dies before even
doing any real work. This is especially noticeable when used on a big
repository like the imported bkcvs repo for the Linux kernel.
This patch allows for batching the sort to put a bound on needed
resources and making progress early, as well as including some small
cleanups.
Signed-off-by: Nicolas Pitre <nico@cam.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffs with only mode changes didn't pass through git-apply --stat.
[ Linus' note: they did for me, on my ppc64, where division by zero just
silently returns zero. Duh. ]
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
It does a "git-update-cache" on the arguments, meaning that you can
commit files without doing a separate "git-update-cache". This commit
was done with
git commit git-commit-script
for example.
You can say "HEAD.p" for the "parent of HEAD". It nests, so
HEAD.p2.p
means parent of second parent of HEAD (which obviously depends
on HEAD being a merge).
This happens in the linux-2.6 tree. We draw the graph line
double-thick to show that this happened.
Also fix a bug where we got a bogus "No commit information available"
line at the end on simple repositories like this one.
Make git-resolve-script only write MERGE_HEAD if a merge actually
occurred. All merge failures leave ORIG_HEAD and LAST_MERGE
behind (instead of ORIG_HEAD and MERGE_HEAD).
Use git-rev-parse to expand arguments (and check for bad ones).
Signed-off-by: Dan Holmsand <holmsand@gmail.com>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This patch fixes a problem reported by Paul Mackerras regarding the interaction
of the --merge-order and --max-age switches of git-rev-list.
This patch applies to the current Linus HEAD. A cleaner fix for the same problem
in my current HEAD will follow later.
With this change, --merge-order produces the same result as no --merge-order
on the linux-2.6 git repository, to wit:
$> git-rev-list --max-age=1116330140 bcfff0b471a60df350338bcd727fc9b8a6aa54b2 | wc -l
655
$> git-rev-list --merge-order --max-age=1116330140 bcfff0b471a60df350338bcd727fc9b8a6aa54b2 | wc -l
655
Signed-off-by: Jon Seymour <jon.seymour@gmail.com>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
If b is reachable from a, then:
git-rev-list a b
argument would print one of the commits twice.
This patch fixes that problem. A previous problem fixed it for the
--merge-order switch.
Signed-off-by: Jon Seymour <jon.seymour@gmail.com>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
If a is reachable from b, then git-rev-list --merge-order b a would
produce a duplicate output of b.
This causes a problem for an upcoming version of gitk since it
breaks the --merge-order ordering invariant.
This patch fixes the problem for the --merge-order switch. A subsequent
patch will fix the problem for the non --merge-order switch.
Signed-off-by: Jon Seymour <jon.seymour@gmail.com>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Given that real trees in the wild include parents with duplicate parents, I have relaxed
over-zealous error checking in epoch.c and dealt with the problem a different way - duplicate
parents are now silently ignored.
Signed-off-by: Jon Seymour <jon.seymour@gmail.com>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
git-rev-list --merge-order HEAD ^HEAD was faulting rather than generating an empty output.
This patch fixes that problem.
Signed-off-by: Jon Seymour <jon.seymour@gmail.com>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
git-rev-list --merge-order --show-breaks root
Was outputing:
| root
It now outputs:
= root
Which is consistent with the behaviour of other cases.
Signed-off-by: Jon Seymour <jon.seymour@gmail.com>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
