|
238b7614
|
2013-08-16T13:31:24
|
|
Fix p_inet_pton on windows
p_inet_pton on Windows should set errno properly for callers.
Rewrite p_inet_pton to handle error cases correctly and add
test cases to exercise this function.
|
|
520287f6
|
2013-08-19T02:17:00
|
|
Merge pull request #1785 from libgit2/cmn/odb-hash-frontend
odb: move hashing to the frontend for streaming
|
|
3d276874
|
2013-08-19T10:30:44
|
|
index: report when it's locked
Report the index being locked with its own error code in order to be
able to differentiate, as a locked index is typically the result of a
crashed process or concurrent access, both of which often require user
intervention to fix.
|
|
51a5e133
|
2013-08-16T16:22:37
|
|
Merge pull request #1778 from libgit2/push_tag_to_tag_test
push: handle tag chains correctly
|
|
0ea41445
|
2013-08-16T15:03:15
|
|
Improve isolation of new test from user environs
|
|
579d87c5
|
2013-08-16T14:48:14
|
|
New test that inits repo and make commit
|
|
376e6c9f
|
2013-08-15T13:48:35
|
|
odb: wrap the stream reading and writing functions
This is in preparation for moving the hashing to the frontend, which
requires us to handle the incoming data before passing it to the
backend's stream.
|
|
9d1751bf
|
2013-08-14T06:44:28
|
|
Merge pull request #1783 from libgit2/cmn/relax-remote
remote: relax the url rules
|
|
0b9ebb54
|
2013-08-14T11:18:05
|
|
remote: relax the url rules
Accept any value for the remote's url, including an empty string which
we used to reject as invalid configuration.
This is not quite what git does (although it has its own problems with
such configurations) and it makes it harder to fix the issue, by not
letting the user modify it.
As we already need to check for a valid URL when we try to connect to
the network, let that perform the check, as we don't need to do it
anywhere else.
|
|
5be622fb
|
2013-08-11T01:37:44
|
|
Test SSH in travis
Set up the ssh credentials so we are able to talk to localhost and
issue git commands. Move to use a script, as the command list is
getting somewhat long.
While here, delay installing valgrind until we need it, as it and its
dependencies are by far the largest downloads and this allows us to
start compiling (and failing) faster and we only incur this cost when
the test suite runs successfully.
|
|
40948998
|
2013-08-13T11:36:24
|
|
Merge pull request #1767 from libgit2/win32-bigger-utf8-buffer
Bigger buffer for utf-8 parsing in win32
|
|
ee065601
|
2013-08-13T09:53:56
|
|
Minor win32 fixes and improvements
This is just a bunch of small fixes that I noticed while looking
at the UTF8 and UTF16 path stuff. It fixes a slowdown in looking
for an empty directory (not exiting loop asap), makes the dir name
in the git__DIR structure be a GIT_FLEX_ARRAY to save an allocation,
and fixes some slightly odd assumptions in the cl_getenv helper.
|
|
d4cff0cb
|
2013-08-13T09:40:32
|
|
Rename git__win32_path fns to git_win32_path
|
|
abf37327
|
2013-08-13T09:15:39
|
|
windows: Path conversion with better semantics
|
|
423e3b0c
|
2013-08-12T11:02:53
|
|
Update to clar 7bf638b80
|
|
e54cfb9b
|
2013-08-12T11:50:27
|
|
odb: free object data when id is ambiguous
By the time we recognise this as an ambiguous id, the object's data
has been loaded into memory. Free it when returning EABMIGUOUS.
|
|
ba8b8c04
|
2013-08-07T09:17:20
|
|
Improve building ignore file lists
The routines to push and pop ignore files while traversing a
directory had some issues. In particular, setting up the initial
list would sometimes push an ignore file before it ought to be
applied if the starting path was a directory containing an ignore
file. Also, the pop function was not always matching the right
part of the path and would fail to pop ignores from the list in
some cases.
This adds some tests that exercise a particular problematic case
and then fixes the problems that I could find related to this.
At some point, I'd like to isolate this ignore rule management
code and rewrite it, but that's a larger project and right now,
I'll opt to just try to fix the broken behaviors.
|
|
4ba64794
|
2013-08-09T10:52:35
|
|
Revert PR #1462 and provide alternative fix
This rolls back the changes to fnmatch parsing from commit
2e40a60e847d6c128af23e24ea7a8efebd2427da except for the tests
that were added. Instead this adds couple of new flags that can
be passed in when attempting to parse an fnmatch pattern. Also,
this changes the pathspec match logic to special case matching a
filename with a '!' prefix against a negative pattern.
This fixes the build.
|
|
fbb6c0c8
|
2013-08-09T09:35:23
|
|
Merge pull request #1764 from ethomson/status_renames_from_rewrites
Add rename from rewrites to status
|
|
33d532dc
|
2013-08-09T09:32:06
|
|
Merge pull request #1462 from yorah/fix/libgit2sharp-issue-379
status: fix handling of filenames with special prefixes
|
|
7f7ebe13
|
2013-08-08T12:57:13
|
|
Merge pull request #1771 from nvloff/write_empty_config_value
config: allow setting empty string as value
|
|
c57f6682
|
2013-08-08T21:17:32
|
|
config: allow empty string as value
`git_config_set_string(config, "config.section", "")` fails when
escaping the value.
The buffer in `escape_value` is allocated without NULL-termination. And
in case of empty string 0 is passed for buffer size in `git_buf_grow`.
`git_buf_detach` returns NULL when the allocated size is 0 and that
leads to an error return in `GITERR_CHECK_ALLOC` called after
`escape_value`
The change in `config_file.c` was suggested by Russell Belfer <rb@github.com>
|
|
5e96f316
|
2013-08-08T08:54:38
|
|
Merge pull request #1738 from libgit2/diff-patch-content-size
Add API for getting at git_diff_patch->content_size
|
|
bf145a6a
|
2013-08-08T08:53:37
|
|
Merge pull request #1746 from libgit2/rename-detection-performance
Rename detection slow
|
|
aaefbdee
|
2013-08-08T08:48:57
|
|
Discriminate path-specific and general UTF-X conversions
|
|
d19bcb33
|
2013-06-06T14:49:14
|
|
odb_pack: handle duplicate objects from different packs
This is based on 24634c6fd02b2240e4a93fad70a08220f8fb793a.
This also corrects an issue with error codes being mixed up with the
number of found objects.
|
|
2c0128ee
|
2013-08-07T19:29:33
|
|
Rename git_win_str_utf* to git_win32_path_utf*
|
|
9c38f7a6
|
2013-08-07T13:22:41
|
|
Add typedefs for win32 utf-8 and utf-16 buffers
...and normalize the signatures of the two conversion functions.
|
|
75f98a95
|
2013-08-07T06:12:27
|
|
Add checkout test for long file name
|
|
c0c51693
|
2013-08-06T21:05:03
|
|
Add long-file-name branch to test repo
|
|
2984f319
|
2013-08-07T05:55:12
|
|
Don't use win32-only macro in test code
|
|
8c8a5490
|
2013-08-06T20:35:51
|
|
Add status test for long paths
|
|
2d9f5b9f
|
2013-08-07T11:11:55
|
|
Parse config headers with quoted quotes
Parse config headers that have the last quote on the
line quoted instead of walking off the end.
|
|
c5780abb
|
2013-08-05T21:58:48
|
|
Merge pull request #1765 from arrbee/ambiguous-oids
More tests for ambiguous OIDs across packs
|
|
437224b4
|
2013-08-05T21:46:32
|
|
More tests for ambiguous OIDs across packs
The test coverage for ambiguous OIDs was pretty thin. This adds
a bunch of new objects both in packs, across packs, and loose that
match to 8 characters so that we can test various cases of
ambiguous lookups.
|
|
e38f0d69
|
2013-08-05T14:06:41
|
|
Add rename from rewrites to status
In git_diff_paired_foreach, temporarily resort the
index->workdir diff list by index path so that we can
track a rename in the workdir from head->index->workdir.
|
|
f1af935b
|
2013-08-05T21:53:09
|
|
submodule: check alloc and name presense
|
|
d8563619
|
2013-08-05T11:41:39
|
|
Split UTF-16 and UTF-8 buffer sizes for win32
Also fixed up call-sites to use the correct buffer sizes, especially
when converting to utf-8.
|
|
e8242022
|
2013-08-05T09:59:02
|
|
Move slow tests to "stress" clar module
Create a new section of clar tests "stress" that will default to
being off where we can put slow tests that push the library for
performance testing purposes.
|
|
31b42eac
|
2013-08-04T14:09:44
|
|
Restore commented out tests
This restores the commented out tests (even though they're slow)
and fixes some trailing whitespace.
|
|
0a38eb42
|
2013-07-31T22:36:50
|
|
Rename test for rename from rewrite
A rename test that illustrates a rename from a rewrite.
|
|
a42c2a8c
|
2013-07-31T21:51:50
|
|
Rename test for multiple similar matches
A rename test that illustrates a source matching multiple targets.
|
|
d730d3f4
|
2013-07-31T16:40:42
|
|
Major rename detection changes
After doing further profiling, I found that a lot of time was
being spent attempting to insert hashes into the file hash
signature when using the rolling hash because the rolling hash
approach generates a hash per byte of the file instead of one
per run/line of data.
To optimize this, I decided to convert back to a run-based file
signature algorithm which would be more like core Git.
After changing this, a number of the existing tests started to
fail. In some cases, this appears to have been because the test
was coded to be too specific to the particular results of the file
similarity metric and in some cases there appear to have been bugs
in the core rename detection code where only by the coincidence
of the file similarity scoring were the expected results being
generated.
This renames all the variables in the core rename detection code
to be more consistent and hopefully easier to follow which made it
a bit easier to reason about the behavior of that code and fix the
problems that I was seeing. I think it's in better shape now.
There are a couple of tests now that attempt to stress test the
rename detection code and they are quite slow. Most of the time
is spent setting up the test data on disk and in the index. When
we roll out performance improvements for index insertion, it
should also speed up these tests I hope.
|
|
a5140f4d
|
2013-07-24T17:11:49
|
|
Fix rename detection for tree-to-tree diffs
The performance improvements I introduced for rename detection
were not able to run successfully for tree-to-tree diffs because
the blob size was not known early enough and so the file signature
always had to be calculated nonetheless.
This change separates loading blobs into memory from calculating
the signature. I can't avoid having to load the large blobs into
memory, but by moving it forward, I'm able to avoid the signature
calculation if the blob won't come into play for renames.
|
|
397357a0
|
2013-07-24T13:12:00
|
|
Add rename test that used to be really slow
Before the optimization commits, this test used to take about 20
seconds to run on my machine. Afterwards, there is still a couple
seconds of data setup, but the actual diff and rename detection
runs in a fraction of a second.
|
|
197b8966
|
2013-07-23T14:34:31
|
|
Add hunk/file headers to git_diff_patch_size
This allows git_diff_patch_size to account for hunk headers and
file headers in the returned size. This required some refactoring
of the code that is used to print file headers so that it could be
invoked by the git_diff_patch_size API.
Also this increases the test coverage and fixes an off-by-one bug
in the size calculation when newline changes happen at the end of
the file.
|
|
b4a4cf24
|
2013-07-22T16:07:56
|
|
Add git_diff_patch_size() API
This adds a new API to get the size in bytes of the diffs in a
git_diff_patch object.
|
|
4cee9b86
|
2013-07-22T11:41:23
|
|
Update init and clean for revwalk::basic tests
The new tests don't always want to use the same fixture data as
the old ones so this makes it configurable on a per-test basis.
|
|
b7107131
|
2013-07-22T11:01:19
|
|
git_reference_next_name must match git_reference_next
The git_reference_next API silently skips invalid references when
scanning the loose refs. The git_reference_next_name API should
skip the same ones even though it isn't creating the reference
object.
This adds a test with a an invalid loose reference and makes sure
that both APIs skip the same entries and generate the same results.
|
|
97309dd0
|
2013-07-19T10:43:53
|
|
Merge pull request #1726 from crazymaster/development
git_buf_text_gather_stats doesn't work for multi-byte characters
|
|
d0b25d9d
|
2013-07-15T08:14:00
|
|
Fix
|
|
2185dd6f
|
2013-07-15T07:59:04
|
|
Fix typo
|
|
19bee769
|
2013-07-15T07:39:16
|
|
Revert "Replace Japanese characters with the encoded hexadecimal values"
This reverts commit a91e4d6b21e141c2abc76b65b2d4c91d5d3e03cc.
|
|
a91e4d6b
|
2013-07-15T07:19:42
|
|
Replace Japanese characters with the encoded hexadecimal values
|
|
d6d34cd0
|
2013-07-13T02:10:16
|
|
Add test for multi-byte characters
|
|
80fd31fa
|
2013-07-13T13:30:23
|
|
revparse: Don't return a reference when asked for a git object
Fix #1722
|
|
d6cb13d7
|
2013-07-13T14:00:05
|
|
tests: Fix memory leak
|
|
1c13b0bf
|
2013-07-12T15:30:05
|
|
test that suggests tags arent fully peeled during push
|
|
584f2d30
|
2013-07-11T11:04:42
|
|
Fix warnings on Win64
|
|
125655fe
|
2013-07-02T16:49:57
|
|
Untracked directories with .git should be ignored
This restores a behavior that was accidentally lost during some
diff refactoring where an untracked directory that contains a .git
item should be treated as IGNORED, not as UNTRACKED. The submodule
code already detects this, but the diff code was not handling the
scenario right.
This also updates a number of existing tests that were actually
exercising the behavior but did not have the right expectations in
place. It actually makes the new
`test_diff_submodules__diff_ignore_options` test feel much better
because the "not-a-submodule" entries are now ignored instead of
showing up as untracked items.
Fixes #1697
|
|
9564229a
|
2013-06-30T08:43:07
|
|
Add tests for diff.ignoreSubmdules config
|
|
f9775a37
|
2013-06-29T23:22:31
|
|
Add ignore_submodules to diff options
This adds correct support for an equivalent to --ignore-submodules
in diff, where an actual ignore value can be passed to diff to
override the per submodule settings in the configuration.
This required tweaking the constants for ignore values so that
zero would not be used and could represent an unset option to the
diff. This was an opportunity to move the submodule values into
include/git2/types.h and to rename the poorly named DEFAULT values
for ignore and update constants to RESET instead.
Now the GIT_DIFF_IGNORE_SUBMODULES flag is exactly the same as
setting the ignore_submodules option to GIT_SUBMODULE_IGNORE_ALL
(which is actually a minor change from the old behavior in that
submodules will now be treated as UNMODIFIED deltas instead of
being left out totally - if you set GIT_DIFF_INCLUDE_UNMODIFIED).
This includes tests for the various new settings.
|
|
2e3e273e
|
2013-06-29T13:20:45
|
|
Update diff to new internal submodule status API
Submodules now expose an internal status API that allows diff to
get back the OID values from the submodule very easily and also
to avoiding caching issues and to override the ignore setting for
the submodule.
|
|
3fe046cf
|
2013-06-29T13:13:38
|
|
Add BARE option to git_repository_open_ext
This adds a BARE option to git_repository_open_ext which allows
a fast open path that still knows how to read gitlinks and to
search for the actual .git directory from a subdirectory.
`git_repository_open_bare` is still simpler and faster, but having
a gitlink aware fast open is very useful for submodules where we
want to quickly be able to peek at the HEAD and index data without
doing any other meaningful repo operations.
|
|
e807860f
|
2013-06-27T16:52:38
|
|
Add timestamp check to submodule status
This is probably not the final form of this change, but this is
a preliminary version of checking a timestamp to see if the cached
working directory HEAD OID matches the current. Right now, this
uses the timestamp on the index and is, like most of our timestamp
checking, subject to having only second accuracy.
|
|
4535f044
|
2013-06-27T16:12:44
|
|
More diff submodule tests for cache issues
The submodules code caches data about submodules in a way that
can cause problems. This adds some tests that try making various
modifications to the state of a submodule to see where we can
catch out problems in the submodule caching.
Right now, I've put in an extra git_submodule_reload_all so that
the test will pass, but with that commented out, the test fails.
I'm working on fixing the broken version of the test at which
point I'll commit the fix and delete the extra reload that makes
the test pass.
|
|
3e7d7100
|
2013-06-27T16:12:00
|
|
Fix diff test helper to show parent file/line
|
|
49621a34
|
2013-06-27T15:46:46
|
|
Fix memory leak in test
|
|
12f8fe00
|
2013-06-27T15:43:12
|
|
More improvements to submodule diff tests
This controls for the diff.mnemonicprefix setting so that can't
break the tests. Also, this expands one test to emulate an
ObjectiveGit test more closely.
|
|
0105b55e
|
2013-06-27T15:26:31
|
|
Add another submodule test of dirty wd
|
|
2b672d5b
|
2013-07-08T22:46:36
|
|
Add git_pathspec_match_diff API
This adds an additional pathspec API that will match a pathspec
against a diff object. This is convenient if you want to handle
renames (so you need the whole diff and can't use the pathspec
constraint built into the diff API) but still want to tell if the
diff had any files that matched the pathspec.
When the pathspec is matched against a diff, instead of keeping
a list of filenames that matched, instead the API keeps the list
of git_diff_deltas that matched and they can be retrieved via a
new API git_pathspec_match_list_diff_entry.
There are a couple of other minor API extensions here that were
mostly for the sake of convenience and to reduce dependencies
on knowing the internal data structure between files inside the
library.
|
|
6fc5a581
|
2013-07-08T22:42:02
|
|
Basic bit vector
This is a simple bit vector object that is not resizable after
the initial allocation but can be of arbitrary size. It will
keep the bti vector entirely on the stack for vectors 64 bits
or less, and will allocate the vector on the heap for larger
sizes. The API is uniform regardless of storage location.
This is very basic right now and all the APIs are inline functions,
but it is useful for storing an array of boolean values.
|
|
d2ce27dd
|
2013-06-24T23:16:06
|
|
Add public API for pathspec matching
This adds a new public API for compiling pathspecs and matching
them against the working directory, the index, or a tree from the
repository. This also reworks the pathspec internals to allow the
sharing of code between the existing internal usage of pathspec
matching and the new external API.
While this is working and the new API is ready for discussion, I
think there is still an incorrect behavior in which patterns are
always matched against the full path of an entry without taking
the subdirectories into account (so "s*" will match "subdir/file"
even though it wouldn't with core Git). Further enhancements are
coming, but this was a good place to take a functional snapshot.
|
|
b8cd7aa9
|
2013-07-09T17:20:55
|
|
Merge pull request #1704 from arrbee/kill-status-index-then-workdir
Remove GIT_STATUS_SHOW_INDEX_THEN_WORKDIR option
|
|
77fa06f3
|
2013-07-09T17:20:36
|
|
Merge pull request #1695 from arrbee/fix-1695
API should not be ifdeffed
|
|
7b5c0d18
|
2013-07-09T16:45:23
|
|
Add more tests for git_config_get_multivar
The old tests didn't try failing lookups or lookups across
multiple config files with some having the pattern and some
not having it.
|
|
290e1479
|
2013-07-09T16:17:41
|
|
Add GIT_CAP_SSH if library was built with SSH
This also adds a test that actually calls git_libgit2_capabilities
and git_libgit2_version.
|
|
a5f9b5f8
|
2013-07-05T16:59:38
|
|
Diff hunk context off by one on long lines
The diff hunk context string that is returned to xdiff need not
be NUL terminated because the xdiff code just copies the number of
bytes that you report directly into the output. There was an off
by one in the diff driver code when the header context was longer
than the output buffer size, the output buffer length included
the NUL byte which was copied into the hunk header.
Fixes #1710
|
|
2a16914c
|
2013-07-03T12:20:34
|
|
Remove GIT_STATUS_SHOW_INDEX_THEN_WORKDIR option
This option serves no benefit now that the git_status_list API
is available. It was of questionable value before and now it
would just be a bad idea to use it rather than the indexed API.
|
|
9b6075b2
|
2013-07-03T17:07:20
|
|
Fix segfault in git_status_foreach_ext()
Add tests for the `GIT_STATUS_SHOW_XXX` flags.
|
|
d90390c1
|
2013-06-29T13:38:27
|
|
test: Fix memory leak
|
|
c4ac556e
|
2013-06-29T12:48:58
|
|
Fix compilation warnings
|
|
f2c41884
|
2013-06-27T22:48:46
|
|
Merge pull request #1688 from arrbee/submodule-load-ignore-orphaned-head
Test submodules with empty index or orphaned head
|
|
1e9dd60f
|
2013-06-27T22:29:05
|
|
Test submodules with empty index or orphaned head
In both of these cases, the submodule data should still be loaded
just (obviously) without the data that comes from either the index
or the HEAD.
This fixes a bug in the orphaned head case.
|
|
c67ff958
|
2013-06-27T07:38:27
|
|
Fix bug marking submodule diffs as unmodified
There was a bug where submodules whose HEAD had not been moved
were being marked as having an UNMODIFIED delta record instead
of being left MODIFIED. This fixes that and fixes the tests to
notice if a submodule has been incorrectly marked as UNMODIFIED.
|
|
c7974b49
|
2013-06-26T12:03:33
|
|
Fail on unmodified deltas when they're unexpected
|
|
b0401c68
|
2013-06-25T16:36:50
|
|
Merge pull request #1681 from arthurschreiber/patch-1
Prefer younger merge bases over older ones.
|
|
24ba6d3f
|
2013-06-25T22:55:13
|
|
Add a test case.
|
|
edbaa63a
|
2013-06-25T09:04:04
|
|
Unbreak git_remote_ls on a local transport after disconnecting.
|
|
c0e58e43
|
2013-06-25T00:12:19
|
|
test-rename: This is not a decimal, silly
|
|
f3f4c6b5
|
2013-06-24T11:56:35
|
|
Fix checkout tests on Windows
|
|
d4f98ba4
|
2013-06-21T12:29:03
|
|
Addition checkout target directory tests
This adds additonal tests of the checkout target directory option
including using it to dump data from bare repos.
|
|
9094ae5a
|
2013-06-21T11:51:16
|
|
Add target directory to checkout
This adds the ability for checkout to write to a target directory
instead of having to use the working directory of the repository.
This makes it easier to do exports of repository data and the like.
This is similar to, but not quite the same as, the --prefix option
to `git checkout-index` (this will always be treated as a directory
name, not just as a simple text prefix).
As part of this, the workdir iterator was extended to take the
path to the working directory as a parameter and fallback on the
git_repository_workdir result only if it's not specified.
Fixes #1332
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36fd9e30
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2013-06-21T11:20:54
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Fix checkout of modified file when missing from wd
This fixes the checkout case when a file is modified between the
baseline and the target and yet missing in the working directory.
The logic for that case appears to have been wrong.
This also adds a useful checkout notify callback to the checkout
test helpers that will count notifications and also has a debug
mode to visualize what checkout thinks that it's doing.
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dacce80b
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2013-06-20T19:05:38
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test asserting checkout should not recreate deleted files
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94ef2a35
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2013-06-20T15:15:10
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Add test for fixed diff bug
Add test for bug fixed in 852ded96982ae70acb63c3940fae08ea29e40fee
Sorry, I wrote that bug fix and forgot to check in a test at the
same time. Here is one that fails on the old version of the code
and now works.
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22b6b82f
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2013-06-20T12:16:06
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Add status flags to force output sort order
Files in status will, be default, be sorted according to the case
insensitivity of the filesystem that we're running on. However,
in some cases, this is not desirable. Even on case insensitive
file systems, 'git status' at the command line will generally use
a case sensitive sort (like 'ls'). Some GUIs prefer to display a
list of file case insensitively even on case-sensitive platforms.
This adds two new flags: GIT_STATUS_OPT_SORT_CASE_SENSITIVELY
and GIT_STATUS_OPT_SORT_CASE_INSENSITIVELY that will override the
default sort order of the status output and give the user control.
This includes tests for exercising these new options and makes
the examples/status.c program emulate core Git and always use a
case sensitive sort.
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7863523a
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2013-06-19T15:54:19
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Add tests and fix use of freed memory
This adds some tests for updating the index and having it remove
items to make sure that the iteration over the index still works
even as earlier items are removed.
In testing with valgrind, this found a path that would use the
path string from the index entry after it had been freed. The
bug fix is simply to copy the path of the index entry before
doing any actual index manipulation.
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f30fff45
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2013-06-19T15:27:25
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Add index pathspec-based operations
This adds three new public APIs for manipulating the index:
1. `git_index_add_all` is similar to `git add -A` and will add
files in the working directory that match a pathspec to the
index while honoring ignores, etc.
2. `git_index_remove_all` removes files from the index that match
a pathspec.
3. `git_index_update_all` updates entries in the index based on
the current contents of the working directory, either added
the new information or removing the entry from the index.
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e4acc3ba
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2013-06-18T16:14:35
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Fix rename looped reference issues
This makes the diff rename tracking code more careful about the
order in which it processes renames and more thorough in updating
the mapping of correct renames when an earlier rename update
alters the index of a later matched pair.
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