bisect: add support for bisecting bare repositories
This enhances the support for bisecting history in bare repositories.
The "git bisect" command no longer needs to be run inside a repository
with a working tree; it defaults to --no-checkout when run in a bare
repository.
Two tests are included to demonstrate this behaviour.
Suggested-by: Junio C Hamano <gitster@pobox.com> Reviewed-by: Jonathan Nieder <jrnieder@gmail.com> Signed-off-by: Jon Seymour <jon.seymour@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
A request to fetch from a client over smart HTTP protocol is served in
multiple steps. In the first round, the server side shows the set of refs
it has and their values, and the client picks from them and sends "I want
to fetch the history leading to these commits".
When the server tries to respond to this second request, its refs may have
progressed by a push from elsewhere. By design, we do not allow fetching
objects that are not at the tip of an advertised ref, and the server
rejects such a request. The client needs to try again, which is not ideal
especially for a busy server.
Teach upload-pack (which is the workhorse driven by git-daemon and smart
http server interface) that it is OK for a smart-http client to ask for
commits that are not at the tip of any advertised ref, as long as they are
reachable from advertised refs.
Do away with reduce_common_start_end() and use xdf->dstart and xdf->dend
set by xdl_trim_ends() that similarly tells us where the first unmatched
line from the start and end occurs.
Signed-off-by: Tay Ray Chuan <rctay89@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
xdiff/xhistogram: rework handling of recursed results
Previously we were over-complicating matters by trying to combine the
recursed results. Now, terminate immediately if a recursive call failed
and return its result.
Signed-off-by: Tay Ray Chuan <rctay89@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
* js/ls-tree-error:
Ensure git ls-tree exits with a non-zero exit code if read_tree_recursive fails.
Add a test to check that git ls-tree sets non-zero exit code on error.
filter-branch: Export variable `workdir' for --commit-filter
According to `git help filter-branch':
--commit-filter <command>
...
You can use the _map_ convenience function in this filter,
and other convenience functions, too...
...
However, it turns out that `map' hasn't been usable because it depends
on the variable `workdir', which is not propogated to the environment
of the shell that runs the commit-filter <command> because the
shell is created via a simple-command rather than a compound-command
subshell:
@SHELL_PATH@ -c "$filter_commit" "git commit-tree" \
$(git write-tree) $parentstr < ../message > ../map/$commit ||
die "could not write rewritten commit"
One solution is simply to export `workdir'. However, it seems rather
heavy-handed to export `workdir' to the environments of all commands,
so instead this commit exports `workdir' for only the duration of the
shell command in question:
gettext: add gettextln, eval_gettextln to encode common idiom
Currently, if you want to use gettext or eval_gettext to format a message
you may have to add a separate echo statement and a surrounding subshell
in order to interpolate the required trailing new line.
This patch introduces two new helper functions, gettextln and eval_gettextln
which append a trailing newline to the gettext output.
This allows constructions of the form:
if test -s "$GIT_DIR/BISECT_START"
then
(
gettext "You need to give me at least one good and one bad revisions.
(You can use \"git bisect bad\" and \"git bisect good\" for that.)" &&
echo
) >&2
else
...
to be expressed more concisely as:
if test -s "$GIT_DIR/BISECT_START"
then
gettextln "You need to give me at least one good and one bad revisions.
(You can use \"git bisect bad\" and \"git bisect good\" for that.)" >&2
else
...
Acked-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com> Signed-off-by: Jon Seymour <jon.seymour@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
In olden times, tests would quietly exit the script when they failed
at an inconvenient moment, which was a little disconcerting.
Therefore v0.99.5~24^2~4 (Trapping exit in tests, using return for
errors, 2005-08-10) switched to an idiom of using "return" instead,
wrapping evaluation of test code in a function to make that safe:
Years later, the implementation of test_when_finished (v1.7.1.1~95,
2010-05-02) and v1.7.2-rc2~1^2~13 (test-lib: output a newline before
"ok" under a TAP harness, 2010-06-24) took advantage of test_run_ as a
place to put code shared by all test assertion functions, without
paying attention to the function's former purpose:
test_run_ () {
...
eval >&3 2>&4 "$1"
eval_ret=$?
if should run cleanup
then
eval >&3 2>&4 "$test_cleanup"
fi
if TAP format requires a newline here
then
echo
fi
return 0
}
That means cleanup commands and the newline to put TAP output at
column 0 are skipped when tests use "return" to fail early. Fix it by
introducing a test_eval_ function to catch the "return", with a
comment explaining the new function's purpose for the next person who
might touch this code.
Signed-off-by: Jonathan Nieder <jrnieder@gmail.com> Acked-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
As v0.99.5~24^2~4 (Trapping exit in tests, using return for errors,
2005-08-10) explains, callers to test_run_ (such as test_expect_code)
used to check the result from eval and the return value separately so
tests that fail early could be distinguished from tests that completed
normally with successful (nonzero) status. Eventually tests that
succeed with nonzero status were phased out (see v1.7.4-rc0~65^2~19,
2010-10-03 and especially v1.5.5-rc0~271, 2008-02-01) but the weird
two-return-value calling convention lives on.
Let's get rid of it. The new rule: test_run_ succeeds (returns 0)
if and only if the test succeeded.
Signed-off-by: Jonathan Nieder <jrnieder@gmail.com> Acked-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
Many pathnames in a fast-import stream need to be quoted. In
particular:
1. Pathnames at the end of an "M" or "D" line need quoting
if they contain a LF or start with double-quote.
2. Pathnames on a "C" or "R" line need quoting as above,
but also if they contain spaces.
For (1), we weren't quoting at all. For (2), we put
double-quotes around the paths to handle spaces, but ignored
the possibility that they would need further quoting.
This patch checks whether each pathname needs c-style
quoting, and uses it. This is slightly overkill for (1),
which doesn't actually need to quote many characters that
vanilla c-style quoting does. However, it shouldn't hurt, as
any implementation needs to be ready to handle quoted
strings anyway.
In addition to adding a test, we have to tweak a test which
blindly assumed that case (2) would always use
double-quotes, whether it needed to or not.
Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
"Usage: git filter-branch " that is prefixed to the first line is 25
columns long, so the "[--index-filter ..." on the second line would not
align with "[--env-filter ..." on the first line to begin with. If the
second and subsequent lines do not aim to align with anything on the
first line, it is just fine to indent them with a single HT.
Normalize the path arguments (relative to the working tree root, if
applicable) before looking up their attributes. This requires passing
the prefix down the call chain.
This fixes two test cases for different reasons:
* "unnormalized paths" is fixed because the .gitattribute-file-seeking
code is not confused into reading the top-level file twice.
* "relative paths" is fixed because the canonical pathnames are passed
to get_check_attr() or get_all_attrs(), allowing them to match the
pathname patterns as expected.
Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu> Signed-off-by: Junio C Hamano <gitster@pobox.com>
git-check-attr: Fix command-line handling to match docs
According to the git-check-attr synopsis, if the '--stdin' option is
used then no pathnames are expected on the command line. Change the
behavior to match this description; namely, if '--stdin' is used but
not '--', then treat all command-line arguments as attribute names.
Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu> Signed-off-by: Junio C Hamano <gitster@pobox.com>
git-check-attr: Error out if no pathnames are specified
If no pathnames are passed as command-line arguments and the --stdin
option is not specified, fail with the error message "No file
specified". Add tests of this behavior.
Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu> Signed-off-by: Junio C Hamano <gitster@pobox.com>
Previously, it was possible to have a line like "file.txt =foo" in a
.gitattribute file, after which an invocation like "git check-attr ''
-- file.txt" would succeed. This patch disallows both constructs.
Please note that any existing .gitattributes file that tries to set an
empty attribute will now trigger the error message "error: : not a
valid attribute name" whereas previously the nonsense was allowed
through.
Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu> Signed-off-by: Junio C Hamano <gitster@pobox.com>
Setting attributes to arbitrary values ("attribute=value") is now
supported, so it is no longer necessary for this comment to justify
prohibiting '=' in an attribute name.
Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu> Signed-off-by: Junio C Hamano <gitster@pobox.com>
Many examples of git command invocation are given in asciidoc listing
blocks, which makes them monospaced and avoids further interpretation of
special characters. Some manpages make a list of examples, like:
git foo::
Run git foo.
git foo -q::
Use the "-q" option.
to quickly show many variants. However, they can sometimes be hard to
read, because they are shown in a proportional-width font (so, for
example, seeing the difference between "-- foo" and "--foo" can be
difficult).
This patch puts all such examples into backticks, which gives the
equivalent formatting to a listing block (i.e., monospaced and without
character interpretation).
As a bonus, this also fixes an example in the git-push manpage, in which
"git push origin :::" was accidentally considered a newly-indented list,
and not a list item with "git push origin :" in it.
Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
bisect: introduce --no-checkout support into porcelain.
git-bisect can now perform bisection of a history without performing
a checkout at each stage of the bisection process. Instead, HEAD is updated.
One use-case for this function is allow git bisect to be used with
damaged repositories where git checkout would fail because the tree
referenced by the commit is damaged.
It can also be used in other cases where actual checkout of the tree
is not required to progress the bisection.
Improved-by: Christian Couder <chriscool@tuxfamily.org> Improved-by: Junio C Hamano <gitster@pobox.com> Improved-by: Jonathan Nieder <jrnieder@gmail.com> Signed-off-by: Jon Seymour <jon.seymour@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
bisect: introduce support for --no-checkout option.
If --no-checkout is specified, then the bisection process uses:
git update-ref --no-deref HEAD <trial>
at each trial instead of:
git checkout <trial>
Improved-by: Christian Couder <chriscool@tuxfamily.org> Signed-off-by: Jon Seymour <jon.seymour@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
bisect: move argument parsing before state modification.
Currently 'git bisect start' modifies some state prior to checking
that its arguments are valid.
This change moves argument validation before state modification
with the effect that state modification does not occur
unless argument validations succeeds.
An existing test is changed to check that new bisect state
is not created if arguments are invalid.
A new test is added to check that existing bisect state
is not modified if arguments are invalid.
Signed-off-by: Jon Seymour <jon.seymour@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
diff -c/--cc: do not mistake "resolved as deletion" as "use working tree"
The combined diff machinery can be used to compare:
- a merge commit with its parent commits;
- a working-tree file with multiple stages in an unmerged index; or
- a working-tree file with the HEAD and the index.
The internal function combine-diff.c:show_patch_diff() checked if it needs
to read the "result" from the working tree by looking at the object name
of the result --- if it is null_sha1, it read from the working tree.
This mistook a merge that records a deletion as the conflict resolution
as if it is a cue to read from the working tree. Pass this information
explicitly from the caller instead.
* maint:
add gitignore entry to description about how to write a builtin
gitattributes: Reword "attribute macro" to "macro attribute"
gitattributes: Clarify discussion of attribute macros
Makefile: some changes for http-related flag documentation
Rename git-http-pull to git-http-fetch. This was passed over in 215a7ad
(Big tool rename, Wed Sep 7 17:26:23 2005 -0700).
Also, distinguish between dumb and smart in flag docs, as the "warnings"
in NO_CURL and NO_EXPACT are no longer accurate given the introduction
of smart http(s).
Signed-off-by: Tay Ray Chuan <rctay89@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
Remove a free() on the static buffer returned by sha1_file_name().
While we're at it, replace xmalloc() calls on the structs
http_(object|pack)_request with xcalloc() so that pointers in the
structs get initialized to NULL. That way, free()'s are safe - for
example, a free() on the url string member when aborting.
This fixes an invalid free().
Reported-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com> Helped-by: Jeff King peff@peff.net Signed-off-by: Tay Ray Chuan <rctay89@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
This allows to pass patches around from repositories,
where the other repository doesn't feature certain files.
In the special case this works for dash git sync to klibc dash:
git am --directory="usr/dash" --exclude="usr/dash/configure.ac" \
--exclude="usr/dash/ChangeLog" --exclude="usr/dash/dash.1" \
.. -i -s -k ../dash/000X-foo.patch
Signed-off-by: maximilian attems <max@stro.at> Signed-off-by: Junio C Hamano <gitster@pobox.com>
gitattributes: Reword "attribute macro" to "macro attribute"
The new wording makes it clearer that such a beast is an attribute in
addition to being a macro (as opposed to being only a macro that is
used for attributes).
Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu> Signed-off-by: Junio C Hamano <gitster@pobox.com>
In order to do partial commits, git-commit overlays a tree on the
cache and checks pathspecs against the result. Currently, the
overlaying is done using "prefix" which prevents relative pathspecs
with ".." and absolute pathspec from matching when they refer to
files not under "prefix" and absent from the index, but still in
the tree (i.e. files staged for removal).
The point of providing a prefix at all is performance optimization.
If we say there is no common prefix for the files of interest, then
we have to read the entire tree into the index.
But even if we cannot use the working directory as a prefix, we can
still figure out if there is a common prefix for all given paths,
and use that instead. The pathspec_prefix() routine from ls-files.c
does exactly that.
Any use of global variables is removed from pathspec_prefix() so
that it can be called from commit.c.
Reported-by: Reuben Thomas <rrt@sc3d.org> Analyzed-by: Michael J Gruber <git@drmicha.warpmail.net> Signed-off-by: Clemens Buchacher <drizzd@aon.at> Signed-off-by: Junio C Hamano <gitster@pobox.com>
If the pager fails to run, git produces no output, e.g.:
$ GIT_PAGER=not-a-command git log
The error reporting fails for two reasons:
(1) start_command: There is a mechanism that detects errors during
execvp introduced in 2b541bf8 (start_command: detect execvp
failures early). The child writes one byte to a pipe only if
execvp fails. The parent waits for either EOF, when the
successful execvp automatically closes the pipe (see
FD_CLOEXEC in fcntl(1)), or it reads a single byte, in which
case it knows that the execvp failed. This mechanism is
incompatible with the workaround introduced in 35ce8622
(pager: Work around window resizing bug in 'less'), which
waits for input from the parent before the exec. Since both
the parent and the child are waiting for input from each
other, that would result in a deadlock. In order to avoid
that, the mechanism is disabled by closing the child_notifier
file descriptor.
(2) finish_command: The parent correctly detects the 127 exit
status from the child, but the error output goes nowhere,
since by that time it is already being redirected to the
child.
No simple solution for (1) comes to mind.
Number (2) can be solved by not sending error output to the pager.
Not redirecting error output to the pager can result in the pager
overwriting error output with standard output, however.
Since there is no reliable way to handle error reporting in the
parent, produce the output in the child instead.
Signed-off-by: Clemens Buchacher <drizzd@aon.at> Signed-off-by: Junio C Hamano <gitster@pobox.com>
Take long option names for -A (--after-context), -B (--before-context)
and -C (--context) from GNU grep and add a similar long option name
for -W (--function-context).
Signed-off-by: Rene Scharfe <rene.scharfe@lsrfire.ath.cx> Signed-off-by: Junio C Hamano <gitster@pobox.com>
grep: add option to show whole function as context
Add a new option, -W, to show the whole surrounding function of a match.
It uses the same regular expressions as -p and diff to find the beginning
of sections.
Currently it will not display comments in front of a function, but those
that are following one. Despite this shortcoming it is already useful,
e.g. to simply see a more complete applicable context or to extract whole
functions.
Signed-off-by: Rene Scharfe <rene.scharfe@lsrfire.ath.cx> Signed-off-by: Junio C Hamano <gitster@pobox.com>
Documentation/submodule: add command references and update options
Reference the "git diff" and "git status" commands where they learned
functionality that in earlier git versions was only available through the
'summary' and 'status' subcommands of "git submodule".
The short option '-n' for '--summary-limit' was missing from the synopsis
and the --init option was missing from the "options" section, add those
there. And while at it, quote all options in backticks so they are
decorated properly in the output formats which support that.
Signed-off-by: Jens Lehmann <Jens.Lehmann@web.de> Signed-off-by: Junio C Hamano <gitster@pobox.com>
* jk/clone-detached:
clone: always fetch remote HEAD
make copy_ref globally available
consider only branches in guess_remote_head
t: add tests for cloning remotes with detached HEAD
* sr/transport-helper-fix: (21 commits)
transport-helper: die early on encountering deleted refs
transport-helper: implement marks location as capability
transport-helper: Use capname for refspec capability too
transport-helper: change import semantics
transport-helper: update ref status after push with export
transport-helper: use the new done feature where possible
transport-helper: check status code of finish_command
transport-helper: factor out push_update_refs_status
fast-export: support done feature
fast-import: introduce 'done' command
git-remote-testgit: fix error handling
git-remote-testgit: only push for non-local repositories
remote-curl: accept empty line as terminator
remote-helpers: export GIT_DIR variable to helpers
git_remote_helpers: push all refs during a non-local export
transport-helper: don't feed bogus refs to export push
git-remote-testgit: import non-HEAD refs
t5800: document some non-functional parts of remote helpers
t5800: use skip_all instead of prereq
t5800: factor out some ref tests
...
* nk/ref-doc:
glossary: clarify description of HEAD
glossary: update description of head and ref
glossary: update description of "tag"
git.txt: de-emphasize the implementation detail of a ref
check-ref-format doc: de-emphasize the implementation detail of a ref
git-remote.txt: avoid sounding as if loose refs are the only ones in the world
git-remote.txt: fix wrong remote refspec