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A debugging patch.
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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This makes the traversal of index be in sync with the tree traversal.
When unpack_callback() is fed a set of tree entries from trees, it
inspects the name of the entry and checks if the an index entry with
the same name could be hiding behind the current index entry, and
(1) if the name appears in the index as a leaf node, it is also
fed to the n_way_merge() callback function;
(2) if the name is a directory in the index, i.e. there are entries in
that are underneath it, then nothing is fed to the n_way_merge()
callback function;
(3) otherwise, if the name comes before the first eligible entry in the
index, the index entry is first unpacked alone.
When traverse_trees_recursive() descends into a subdirectory, the
cache_bottom pointer is moved to walk index entries within that directory.
All of these are omitted for diff-index, which does not even want to be
fed an index entry and a tree entry with D/F conflicts.
This fixes 3-way read-tree and exposes a bug in other parts of the system
in t6035, test #5. The test prepares these three trees:
O = HEAD^
100644 blob e69de29bb2d1d6434b8b29ae775ad8c2e48c5391 a/b-2/c/d
100644 blob e69de29bb2d1d6434b8b29ae775ad8c2e48c5391 a/b/c/d
100644 blob e69de29bb2d1d6434b8b29ae775ad8c2e48c5391 a/x
A = HEAD
100644 blob e69de29bb2d1d6434b8b29ae775ad8c2e48c5391 a/b-2/c/d
100644 blob e69de29bb2d1d6434b8b29ae775ad8c2e48c5391 a/b/c/d
100644 blob 587be6b4c3f93f93c489c0111bba5596147a26cb a/x
B = master
120000 blob a36b77384451ea1de7bd340ffca868249626bc52 a/b
100644 blob e69de29bb2d1d6434b8b29ae775ad8c2e48c5391 a/b-2/c/d
100644 blob e69de29bb2d1d6434b8b29ae775ad8c2e48c5391 a/x
With a clean index that matches HEAD, running
git read-tree -m -u --aggressive $O $A $B
now yields
120000 a36b77384451ea1de7bd340ffca868249626bc52 3 a/b
100644 e69de29bb2d1d6434b8b29ae775ad8c2e48c5391 0 a/b-2/c/d
100644 e69de29bb2d1d6434b8b29ae775ad8c2e48c5391 1 a/b/c/d
100644 e69de29bb2d1d6434b8b29ae775ad8c2e48c5391 2 a/b/c/d
100644 587be6b4c3f93f93c489c0111bba5596147a26cb 0 a/x
which is correct. "master" created "a/b" symlink that did not exist,
and removed "a/b/c/d" while HEAD did not do touch either path.
Before this series, read-tree did not notice the situation and resolved
addition of "a/b" and removal of "a/b/c/d" independently. If A = HEAD had
another path "a/b/c/e" added, this merge should conflict but instead it
silently resolved "a/b" and then immediately overwrote it to add
"a/b/c/e", which was quite bogus.
Tests in t1012 start to work with this.
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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This prepares but does not yet implement a look-ahead in the index entries
when traverse-trees.c decides to give us tree entries in an order that
does not match what is in the index.
A case where a look-ahead in the index is necessary happens when merging
branch B into branch A while the index matches the current branch A, using
a tree O as their common ancestor, and these three trees looks like this:
O A B
t t
t-i t-i t-i
t-j t-j
t/1
t/2
The traverse_trees() function gets "t", "t-i" and "t" from trees O, A and
B first, and notices that A may have a matching "t" behind "t-i" and "t-j"
(indeed it does), and tells A to give that entry instead. After unpacking
blob "t" from tree B (as it hasn't changed since O in B and A removed it,
it will result in its removal), it descends into directory "t/".
The side that walked index in parallel to the tree traversal used to be
implemented with one pointer, o->pos, that points at the next index entry
to be processed. When this happens, the pointer o->pos still points at
"t-i" that is the first entry. We should be able to skip "t-i" and "t-j"
and locate "t/1" from the index while the recursive invocation of
traverse_trees() walks and match entries found there, and later come back
to process "t-i".
While that look-ahead is not implemented yet, this adds a flag bit,
CE_UNPACKED, to mark the entries in the index that has already been
processed. o->pos pointer has been renamed to o->cache_bottom and it
points at the first entry that may still need to be processed.
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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When the ancestor used to have a blob "P", your tree removed it, and the
tree you are merging with also removed it, the agressive three-way cleanly
merges to remove that blob. If the other tree added a new blob "P/Q"
while removing "P", it should also merge cleanly to remove "P" and create
"P/Q" (since neither the ancestor nor your tree could have had it, so it
is a typical "created in one").
The "aggressive" rule is not new anymore. Reword the stale comment.
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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traverse_trees() is supposed to call its callback with all the matching
entries from the given trees. The current algorithm keeps a pointer to
each of the tree being traversed, and feeds the entry with the earliest
name to the callback.
This breaks down if the trees being traversed looks like this:
A B
t-1 t
t-2 u
t/a v
When we are currently looking at an entry "t-1" in tree A, and tree B has
returned "t", feeding "t" from the B and not feeding anything from A, only
because "t-1" sorts later than "t", will miss an entry for a subtree "t"
behind the current entry in tree A.
This introduces extended_entry_extract() helper function that gives what
name is expected from the tree, and implements a mechanism to look-ahead
in the tree object using it, to make sure such a case is handled sanely.
Traversal in tree A in the above example will first return "t" to match
that of B, and then the next request for an entry to A then returns "t-1".
This roughly corresponds to what Linus's "prepare for one-entry lookahead"
wanted to do, but because this does implement look ahead, t6035 and one more
test in t1012 reveal that the approach would not work without adjusting the
side that walks the index in unpack_trees() as well.
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Before starting to muck with this code, let's expose the current
breakages that we intend to fix.
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Signed-off-by: Junio C Hamano <gitster@pobox.com>
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git svn gc will compress the unhandled.log files that git svn mkdirs reads,
causing git svn mkdirs to skip directory creation.
[ew: trivial whitespace cleanups]
Acked-by: Eric Wong <normalperson@yhbt.net>
Signed-off-by: Robert Zeh <robert.a.zeh@gmail.com>
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svn+ssh:// repositories often have userinfo embedded in the URL
which were stripped out of the "git-svn-id:" trailers. Since
the SVN::Client::copy function takes userinfo into account when
matching URLs for SVN repositories, we need to retrieve the full
URL with embedded userinfo in it to avoid mismatched URLs.
Tested-by: Florian Köberle <florian@fkoeberle.de>
Signed-off-by: Eric Wong <normalperson@yhbt.net>
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* maint:
Prevent git blame from segfaulting on a missing author name
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This appears to be a trivial case where array indices were being
passed to git rev-list, instead of the contents stored in the
array itself.
Signed-off-by: Eric Wong <normalperson@yhbt.net>
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The human-readable author and committer name can be missing from
commits imported from foreign SCM interfaces. Make sure we parse
the "author" and "committer" line a bit more leniently and avoid
segfaulting by assuming the name always exists.
Signed-off-by: David Reiss <dreiss@facebook.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Change git-svn not to impose a limit of 16 parents on a merge.
This limit in git-svn artificially prevents cloning svn repositories
that contain commits with more than 16 merge parents.
The limit was removed from builtin-commit-tree.c for git v1.6.0 in commit
ef98c5cafb3e799b1568bb843fcd45920dc62f16, so there is no need to check for it
it in git-svn.
Signed-off-by: Andrew Myrick <amyrick@apple.com>
Acked-by: Eric Wong <normalperson@yhbt.net>
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The old function was incorrect; in some instances it marks a cherry picked
range as a merged branch (because of an incorrect assumption that
'rev-list COMMIT --not RANGE' would work). This is replaced with a
function which should detect them correctly, memoized to limit the expense
of dealing with branches with many cherry picks to one 'merge-base' call
per merge, per branch which used cherry picking.
Signed-off-by: Sam Vilain <sam@vilain.net>
Acked-by: Eric Wong <normalperson@yhbt.net>
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The old function would have to check all mentioned merge tips, every time
that the mergeinfo ticket changed. This involved 1-2 rev-list operation
for each listed mergeinfo line. If there are a lot of feature branches
being merged into a trunk, this makes for a very expensive operation for
detecting the new parents on every merge.
This new version first uses a single 'rev-list' to figure out which commit
ranges are already reachable from the parents. This is used to eliminate
the already merged branches from the list.
Signed-off-by: Sam Vilain <sam@vilain.net>
Acked-by: Eric Wong <normalperson@yhbt.net>
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SVN's list of commit ranges in mergeinfo tickets is inclusive, whereas
git commit ranges are exclusive on the left hand side. Also, the end
points of the commit ranges may not exist; they simply delineate
ranges of commits which may or may not exist. Fix these two mistakes.
Signed-off-by: Sam Vilain <sam@vilain.net>
Acked-by: Eric Wong <normalperson@yhbt.net>
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Each time the svn mergeinfo ticket changes, we look it up in the rev_map;
when there are a lot of merged branches, this will result in many repeated
lookups of the same information for subsequent commits. Arrange the slow
part of the function so that it may be memoized, and memoize it. The more
expensive revision walking operation can be memoized separately.
[ew: changed "next" to "return" for function exit]
Signed-off-by: Sam Vilain <sam@vilain.net>
Acked-by: Eric Wong <normalperson@yhbt.net>
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As shown, git-svn has some problems; not all svn merges are correctly
detected, and cherry picks may incorrectly be detected as real merges.
These test cases will be marked as _success once the relevant fixes are in.
Signed-off-by: Sam Vilain <sam@vilain.net>
Acked-by: Eric Wong <normalperson@yhbt.net>
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Signed-off-by: Eric Wong <normalperson@yhbt.net>
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When using the -r/--revision argument to fetch deleted history,
calling SVN::Ra::get_log() from an SVN::Ra object initialized
to track the deleted URL will fail.
This regression was introduced in:
commit 4aacaeb3dc82bb6479e70e120053dc27a399460e
"fix shallow clone when upstream revision is too new"
We now ignore errors from SVN::Ra::get_log() here because using
--revision will always override the value of $head here if
(and only if) we're tracking deleted directories.
Signed-off-by: Eric Wong <normalperson@yhbt.net>
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Hopefully the last rc before the final one.
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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* maint:
rebase -i: abort cleanly if the editor fails to launch
technical-docs: document hash API
api-strbuf.txt: fix typos and document launch_editor()
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If the user's configured editor is emacsclient, the editor
will fail to launch if emacs is not running and the git
command that tried to lanuch the editor will abort. For most
commands, all you have to do is to start emacs and repeat
the command.
The "git rebase -i" command, however, aborts without cleaning
the "$GIT_DIR/rebase-merge" directory if it fails to launch the
editor, so you'll need to do "git rebase --abort" before
repeating the rebase command.
Change "git rebase -i" to terminate using "die_abort" (instead of
with "die") if the initial launch of the editor fails.
Signed-off-by: Björn Gustavsson <bgustavsson@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Using 'svn' directly may not work for all users.
Signed-off-by: Eric Wong <normalperson@yhbt.net>
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The "git svn gc" command creates and appends to unhandled.log.gz
files which should be parsed before the uncompressed
unhandled.log files.
Reported-by: Robert Zeh
Signed-off-by: Eric Wong <normalperson@yhbt.net>
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Signed-off-by: Stephen Boyd <bebarino@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Signed-off-by: Stephen Boyd <bebarino@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Signed-off-by: Junio C Hamano <gitster@pobox.com>
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* maint:
Git 1.6.5.7
worktree: don't segfault with an absolute pathspec without a work tree
ignore unknown color configuration
help.autocorrect: do not run a command if the command given is junk
Illustrate "filter" attribute with an example
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Signed-off-by: Junio C Hamano <gitster@pobox.com>
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If a command is run with an absolute path as a pathspec inside a bare
repository, e.g. "rev-list HEAD -- /home", the code tried to run strlen()
on NULL, which is the result of get_git_work_tree(), and segfaulted. It
should just fail instead.
Currently the function returns NULL even inside .git/ in a repository
with a work tree, but that is a separate issue.
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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When parsing the config file, if there is a value that is
syntactically correct but unused, we generally ignore it.
This lets non-core porcelains store arbitrary information in
the config file, and it means that configuration files can
be shared between new and old versions of git (the old
versions might simply ignore certain configuration).
The one exception to this is color configuration; if we
encounter a color.{diff,branch,status}.$slot variable, we
die if it is not one of the recognized slots (presumably as
a safety valve for user misconfiguration). This behavior
has existed since 801235c (diff --color: use
$GIT_DIR/config, 2006-06-24), but hasn't yet caused a
problem. No porcelain has wanted to store extra colors, and
we once a color area (like color.diff) has been introduced,
we've never changed the set of color slots.
However, that changed recently with the addition of
color.diff.func. Now a user with color.diff.func in their
config can no longer freely switch between v1.6.6 and older
versions; the old versions will complain about the existence
of the variable.
This patch loosens the check to match the rest of
git-config; unknown color slots are simply ignored. This
doesn't fix this particular problem, as the older version
(without this patch) is the problem, but it at least
prevents it from happening again in the future.
Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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If a given command is not found, then help.c tries to guess which one the
user could have meant. If help.autocorrect is 0 or unset, then a list of
suggestions is given as long as the dissimilarity between the given command
and the candidates is not excessively high. But if help.autocorrect was
non-zero (i.e., a delay after which the command is run automatically), the
latter restriction on dissimilarity was not obeyed.
In my case, this happened:
$ git ..daab02
WARNING: You called a Git command named '..daab02', which does not exist.
Continuing under the assumption that you meant 'read-tree'
in 4.0 seconds automatically...
The patch reuses the similarity limit that is also applied when the list of
suggested commands is printed.
Signed-off-by: Johannes Sixt <j6t@kdbg.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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The example was taken from aa4ed402c9721170fde2e9e43c3825562070e65e
(Add 'filter' attribute and external filter driver definition).
Signed-off-by: Nanako Shiraishi <nanako3@lavabit.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Support the new options --all, --prune, and --dry-run for
'git fetch'.
As the --multiple option was primarily introduced to enable
'git remote update' to be re-implemented in terms of 'git fetch'
(16679e37) and is not likely to be used much from the command
line, it does not seems worthwhile to complicate the code
(to support completion of multiple remotes) to handle it.
Signed-off-by: Björn Gustavsson <bgustavsson@gmail.com>
Acked-by: Shawn O. Pearce <spearce@spearce.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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These three have already been backported to 1.6.5.5
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Giving --format from the command line, or using output file extention to
DWIM the output format, with a pathspec that is disambiguated with an
explicit double-dash on the command line, e.g.
git archive -o file --format=zip HEAD -- path
git archive -o file.zip HEAD -- path
didn't work correctly.
This was because the code reordered (when one was given) or added (when
the format was inferred) a --format argument at the end, effectively
making it to "archive HEAD -- path --format=zip", i.e. an extra pathspec
that is unlikely to match anything.
The command line argument list should always be "options, revs and then
paths", and we should set a good example by inserting the --format at the
beginning instead.
Reported-by: Ilari Liusvaara <ilari.liusvaara@elisanet.fi>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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This hook runs after "git fetch" in the repository the objects are
fetched from as the user who fetched, and has security implications.
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Signed-off-by: Junio C Hamano <gitster@pobox.com>
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* git://repo.or.cz/git-gui:
git-gui: suppress RenderBadPicture X error caused by Tk bug
git-gui: Increase blame viewer usability on MacOS.
git-gui: search 4 directories to improve statistic of gc hint
git gui: make current branch default in "remote delete branch" merge check
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* git://git.kernel.org/pub/scm/gitk/gitk:
gitk: Fix selection of tags
gitk: Default to the system colours on Windows
gitk: Update Japanese translation
gitk: Fix "git gui blame" invocation when called from top-level directory
gitk: Disable checkout of remote branches
gitk: Improve appearance of radiobuttons and checkbuttons
gitk: Skip translation of "wrong Tcl version" message
gitk: Add Japanese translation
gitk: Use the --submodule option for displaying diffs when available
gitk: Fix diffing committed -> staged (typo in diffcmd)
gitk: Add configuration for UI colour scheme
gitk: Don't compare fake children when comparing commits
gitk: Show diff of commits at end of compare-commits output
gitk: Add a user preference to enable/disable use of themed widgets
gitk: Fix errors in the theme patch
gitk: Use themed tk widgets
gitk: Restore scrolling position of diff pane on back/forward in history
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Reword the 1.7.0 warnings, and drop deprecation of "merge <msg> HEAD <commit>..."
syntax.
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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* maint:
add-interactive: fix deletion of non-empty files
pull: clarify advice for the unconfigured error case
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* mm/maint-merge-ff-error-message-fix:
builtin-merge: show user-friendly error messages for fast-forward too.
merge-recursive: make the error-message generation an extern function
Conflicts:
merge-recursive.c
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* jn/maint-pull-rebase-error-message:
pull: clarify advice for the unconfigured error case
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* jk/maint-add-p-delete-fix:
add-interactive: fix deletion of non-empty files
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* git://git.bogomips.org/git-svn:
git-svn: set svn.authorsfile earlier when cloning
git-svn: Set svn.authorsfile to an absolute path when cloning
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Junio C Hamano
Robert Zeh
Eric Wong
David Reiss
Andrew Myrick
Sam Vilain
Björn Gustavsson
Stephen Boyd
Jeff King
Johannes Sixt
Nanako Shiraishi