On Sat, 30 Jul 2005, Linus Torvalds wrote:
>
> Yup, it's git-merge-base, and it is confused by the same thing that
> confused git-rev-list.
Hmm.. Here's a tentative fix. I'm not really happy with it, and maybe
somebody else can come up with a better one. I think this one ends up
being quite a bit more expensive than the old one (it will look up _all_
common parents that have a child that isn't common, and then select the
newest one of the bunch), but I haven't really thought it through very
much.
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This adds a new "git bisect" command.
- "git bisect start"
start bisection search.
- "git bisect bad <rev>"
mark some version known-bad (if no arguments, then current HEAD)
- "git bisect good <revs>..."
mark some versions known-good (if no arguments, then current HEAD)
- "git bisect reset <branch>"
done with bisection search and go back to your work (if
no arguments, then "master").
The way you use it is:
git bisect start
git bisect bad # Current version is bad
git bisect good v2.6.13-rc2 # v2.6.13-rc2 was the last version
# tested that was good
When you give at least one bad and one good versions, it will
bisect the revision tree and say something like:
Bisecting: 675 revisions left to test after this
and check out the state in the middle. Now, compile that kernel, and boot
it. Now, let's say that this booted kernel works fine, then just do
git bisect good # this one is good
which will now say
Bisecting: 337 revisions left to test after this
and you continue along, compiling that one, testing it, and depending on
whether it is good or bad, you say "git bisect good" or "git bisect bad",
and ask for the next bisection.
Until you have no more left, and you'll have been left with the first bad
kernel rev in "refs/bisect/bad".
Oh, and then after you want to reset to the original head, do a
git bisect reset
to get back to the master branch, instead of being in one of the bisection
branches ("git bisect start" will do that for you too, actually: it will
reset the bisection state, and before it does that it checks that you're
not using some old bisection branch).
Not really any harder than doing series of "quilt push" and "quilt pop",
now is it?
[jc: This patch is a rework based on what Linus posted to the
list. The changes are:
- The original introduced four separate commands, which was
three too many, so I merged them into one with subcommands.
- Since the next thing you would want to do after telling it
"bad" and "good" is always to bisect, this version does it
automatically for you.
- I think the termination condition was wrong. The original
version checked if the set of revisions reachable from next
bisection but not rechable from any of the known good ones
is empty, but if the current bisection was a bad one, this
would not terminate, so I changed it to terminate it when
the set becomes a singleton or empty.
- Removed the use of shell array variable.
]
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Signed-off-by: Junio C Hamano <junkio@cox.net>
Document new (and not-so-new) flags of git-rev-list.
Signed-off-By: Matthias Urlichs <smurf@smurf.noris.de>
Signed-off-by: Junio C Hamano <junkio@cox.net>
Separate the process of building the commands to compilation and
linkage. This makes it more consistent with the library objects, is the
traditional thing to do, and significantly speeds up the subsequent
rebuilds, especially for us the people who develop git on 300MHz
notebooks.
Ported from Cogito.
Signed-off-by: Petr Baudis <pasky@ucw.cz>
Signed-off-by: Junio C Hamano <junkio@cox.net>
When built with NO_OPENSSL, rev-list --merge-order does not
work, causing t6001 test to fail. Detect that and skip this
test to allow continuing to the rest of the tests.
Signed-off-by: Junio C Hamano <junkio@cox.net>
Support for completely OpenSSL-less builds. FSF considers distributing GPL
binaries with OpenSSL linked in as a legal problem so this is trouble
e.g. for Debian, or some people might not want to install OpenSSL
anyway. If you
make NO_OPENSSL=1
you get completely OpenSSL-less build, disabling --merge-order and using
Mozilla's SHA1 implementation.
Ported from Cogito.
Signed-off-by: Petr Baudis <pasky@ucw.cz>
Signed-off-by: Junio C Hamano <junkio@cox.net>
The Makefile rules were massively reordered so that they are actually
logically grouped now. Captions were added to separate the sections. No
rule contents was touched during the process.
Signed-off-by: Petr Baudis <pasky@ucw.cz>
Signed-off-by: Junio C Hamano <junkio@cox.net>
Remove about one gazillion of explicit dependency rules with few lines
describing the general dependency pattern and then the exceptions. This
noticably shortens the Makefile and makes it easier to touch it.
This is part of the Cogito Makefile changes port.
Signed-off-by: Petr Baudis <pasky@ucw.cz>
Signed-off-by: Junio C Hamano <junkio@cox.net>
Describe variables which make itself takes and adjusts compilation
accordingly (MOZILLA_SHA1, NO_OPENSSL, PPC_SHA1), and make adding
defines more convenient through the $DEFINES variable. $COPTS includes
-g as well now and is not overriden if it was already declared in the
environment. Also, $CFLAGS is appended to rather than reset, so that if
there was already a $CFLAGS environment variable, it's appended to. Some
more variables are also made overridable through the environment. Renamed
$bin to $bindir which is the name commonly used for this.
This is part of the Cogito Makefile changes port.
Signed-off-by: Petr Baudis <pasky@ucw.cz>
Signed-off-by: Junio C Hamano <junkio@cox.net>
All usage strings are now declared as static const char [].
This is carried over from my old git-pb branch.
Signed-off-by: Petr Baudis <pasky@ucw.cz>
Signed-off-by: Junio C Hamano <junkio@cox.net>
Simple whitespace-related tidyups ensuring style consistency.
This is carried over from my old git-pb branch.
Signed-off-by: Petr Baudis <pasky@ucw.cz>
Signed-off-by: Junio C Hamano <junkio@cox.net>
I have reviewed all occurrences of mmap() in git and fixed three types
of errors/defects:
1) The result is not checked.
2) The file descriptor is closed if mmap() succeeds, but not when it
fails.
3) Various casts applied to -1 are used instead of MAP_FAILED, which is
specifically defined to check mmap() return value.
[jc: This is a second round of Pavel's patch. He fixed up the problem
that close() potentially clobbering the errno from mmap, which
the first round had.]
Signed-off-by: Pavel Roskin <proski@gnu.org>
Signed-off-by: Junio C Hamano <junkio@cox.net>
Pasky and others raised many valid points on the problems
initial exclude pattern enhancement work had. Based on the
list discussion, rework the exclude logic to use "last match
determines its fate" rule, and order the list by exclude-from
(the fallback default pattern file), exclude-per-directory
(shallower to deeper, so deeper ones can override), and then
command line exclude patterns.
Signed-off-by: Junio C Hamano <junkio@cox.net>
This corner-case was triggered by a kernel commit that was not in date
order, due to a misconfigured time zone that made the commit appear three
hours older than it was.
That caused git-rev-list to traverse the commit tree in a non-obvious
order, and made it parse several of the _parents_ of the misplaced commit
before it actually parsed the commit itself. That's fine, but it meant
that the grandparents of the commit didn't get marked uninteresting,
because they had been reached through an "interesting" branch.
The reason was that "mark_parents_uninteresting()" (which is supposed to
mark all existing parents as being uninteresting - duh) didn't actually
traverse more than one level down the parent chain.
NORMALLY this is fine, since with the date-based traversal order,
grandparents won't ever even have been looked at before their parents (so
traversing the chain down isn't needed, because the next time around when
we pick out the parent we'll mark _its_ parents uninteresting), but since
we'd gotten out of order, we'd already seen the parent and thus never got
around to mark the grandparents.
Anyway, the fix is simple. Just traverse parent chains recursively.
Normally the chain won't even exist (since the parent hasn't been parsed
yet), so this is not actually going to trigger except in this strange
corner-case.
Add a comment to the simple one-liner, since this was a bit subtle, and I
had to really think things through to understand how it could happen.
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Signed-off-by: Junio C Hamano <junkio@cox.net>
Darrin Thompson noticed when he was showing off GIT to others
that the use of filenames "a" and "b" in the tutorial example
was unnecessarily confusing, especially with our "patch -p1"
prefix a/ and b/, without giving us any patch. I was very
tempted to change them back to l/ and k/ prefixes, but decided
to restrain myself and update the tutorial instead ;-).
Signed-off-by: Junio C Hamano <junkio@cox.net>
Some newer features of libcurl are used which are not strictly necessary
for http-pull. Use them only if libcurl is new enough to know about them.
[jc: I just reworked #ifdef sprinkled all over the code into a
single section that defines a set of macros.]
Signed-off-by: Johannes Schindelin <Johannes.Schindelin@gmx.de>
Signed-off-by: Junio C Hamano <junkio@cox.net>
Now we see if the result is quite similar to one of the parents, and
if it is, display the result as a diff from that parent. If the result
is similar to more than one parent, pick the one that it's most
similar to.
On older Mac OS X (10.2.8), no socklen_t is defined, and therefore
daemon.c does not compile. However, Mac OS X 10.4 seems to define
socklen_t differently.
Also, linking fails due to some symbols defined in libssl (not just
libcrypto).
[jc: I am tentatively dropping the socklen_t part of the patch
because I am waiting for confirmation on the server side IPV6
patch from Yoshifuji-san]
Signed-off-by: Johannes Schindelin <Johannes.Schindelin@gmx.de>
Signed-off-by: Junio C Hamano <junkio@cox.net>
Test t6002 unnecessarily fails when bc is a bit older than average.
Signed-off-by: Johannes.Schindelin <Johannes.Schindelin@gmx.de>
Signed-off-by: Junio C Hamano <junkio@cox.net>
git-prune-script still contained that non-portable option.
Signed-off-by: Johannes Schindelin <Johannes.Schindelin@gmx.de>
Signed-off-by: Junio C Hamano <junkio@cox.net>
When git-apply was printing out long filenames, it used to just truncate
them to show the last "max_len" characters of the filename. Which can be
really quite ugly (note the two filenames that have just been silently
truncated from the beginning - it looks even worse when there are lots
of them, like there were in the current v2.6.13-rc4 cris arch update):
Documentation/video4linux/README.saa7134 | 9
Documentation/video4linux/bttv/Cards | 74
umentation/video4linux/hauppauge-wintv-cx88-ir.txt | 54
Documentation/video4linux/lifeview.txt | 42
mentation/video4linux/not-in-cx2388x-datasheet.txt | 41
Documentation/w1/w1.generic | 107
With this patch it now looks like so:
Documentation/video4linux/README.saa7134 | 9
Documentation/video4linux/bttv/Cards | 74
.../video4linux/hauppauge-wintv-cx88-ir.txt | 54
Documentation/video4linux/lifeview.txt | 42
.../video4linux/not-in-cx2388x-datasheet.txt | 41
Documentation/w1/w1.generic | 107
ie we've made it clear with an ellipsis that we've cut off something from
the beginning, and it also tries to do it cleanly at a subdirectory level.
Signed-off-by: Linus "good taste" Torvalds <torvalds@osdl.org>
Signed-off-by: Junio C Hamano <junkio@cox.net>
Some places assumed .git is the GIT_DIR, resulting heads and
tags not showing when it was run like "GIT_DIR=. gitk --all".
This is not a contrived example --- I rely on it to verify
my private copy of git.git repository before pushing it out.
Define a single procedure "gitdir" and use it.
Signed-off-by: Junio C Hamano <junkio@cox.net>
Signed-off-by: Paul Mackerras <paulus@samba.org>
Stuff that ended up in the result is shown in bold with a "+" at the
beginning of the line; stuff that didn't is in the normal font with
a "-" at the beginning of the line. The color shows which parent
the stuff was in; red for the first parent, blue for the second, then
green, purple, brown, and the rest are grey. If the result is different
from all of the parents it is shown in black (and bold).
In particular, warn about things like zero-padding of the mode bits,
which is a big no-no, since it makes otherwise identical trees have
different representations (and thus different SHA1 numbers).
Also make the warnings more regular.
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
The old mode conversion was not only complex, it also refused to change
the length of a mode, which made it fragile. By moving the mode
conversion around a bit, we can not only simplify it, it also ends up
being more powerful.
Also fix a memory leak that made it impossible to convert huge archives
without tons and tons of memory.
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
We historically used to be very careful in fsck-cache, but when it was
re-written to use "parse_object()" instead of parsing everything by
hand, it lost a bit of the checks. This, together with the previous
commit, should make it do more proper commit object syntax checks.
Also add a "--strict" flag, which warns about the old-style "0664" file
mode bits, which shouldn't exist in modern trees, but that happened
early on in git trees and that the default git-fsck-cache thus silently
accepts.
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This was brought on by a bad tree of Thomas Gleixner, where some bogus
commit objects weren't warned about properly
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
When no usable head/tag is specified, git log barfed with
underlying error message from rev-list, which was not helpful.
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Signed-off-by: Junio C Hamano <junkio@cox.net>
- use --verify to make sure rev param is a rev, and barf otherwise.
- make it always output to stdout; no funny business with tee.
- take optional branch head name to specify which branch to summarize.
- show baserev in a human readable way.
- do not depend on diffstat; use git-apply --stat instead.
Signed-off-by: Junio C Hamano <junkio@cox.net>
A short message requesting a pull from the repository is also included.
Signed-off-by: Ryan Anderson <ryan@michonline.com>
Signed-off-by: Junio C Hamano <junkio@cox.net>
git-status-script was missed during the conversion from "N" to "A" as
the new-file marker flag.
Signed-off-by: Ryan Anderson <ryan@michonline.com>
Signed-off-by: Junio C Hamano <junkio@cox.net>
This patch includes two fixes to the git-core Debian package:
* Conflict with the GNU Interactive Tools package, which _also_
wants to install /usr/bin/git.
* Compile against the unencumbered Mozilla SHA1 code, instead of
the iffy OpenSSL code, as much as possible. This makes it easier to get
the package included for distribution with Debian.
This has been based upon the original patch by Sebastian Kuzminsky
<seb@highlab.com>, but has been fixed up based upon feedback.
Signed-off-by: Ryan Anderson <ryan@michonline.com>
Signed-off-by: Junio C Hamano <junkio@cox.net>
The check that the source is ahead of the destination incorrectly expects
pop_most_recent_commit() to gracefully handle an empty list.
Fix by just checking the list itself, rather than the return value of the
pop function.
[jc: I did the test script that demonstrated the problem]
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Signed-off-by: Junio C Hamano <junkio@cox.net>
We use 'A' for added files instead of 'N' to make the it
visually easier to distinguish from 'M' now.
While we are at it, make the test scripts executable. Yes, I
know it does not matter because t/Makefile runs them explicitly
with "sh tXXXX-blah.sh", but being consistent is always better.
Signed-off-by: Junio C Hamano <junkio@cox.net>
Both Cogito and StGIT prefer to see 'A' for new files. The
current 'N' is visually harder to distinguish from 'M', which is
used for modified files. Prepare the internals to use symbolic
constants to make the change easier.
Signed-off-by: Junio C Hamano <junkio@cox.net>
