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The .gitignore file allows for patterns which unignore previous
ignore patterns. When unignoring a previous pattern, there are
basically three cases how this is matched when no globbing is
used:
1. when a previous file has been ignored, it can be unignored by
using its exact name, e.g.
foo/bar
!foo/bar
2. when a file in a subdirectory has been ignored, it can be
unignored by using its basename, e.g.
foo/bar
!bar
3. when all files with a basename are ignored, a specific file
can be unignored again by specifying its path in a
subdirectory, e.g.
bar
!foo/bar
The first problem in libgit2 is that we did not correctly treat
the second case. While we verified that the negative pattern
matches the tail of the positive one, we did not verify if it
only matches the basename of the positive pattern. So e.g. we
would have also negated a pattern like
foo/fruz_bar
!bar
Furthermore, we did not check for the third case, where a
basename is being unignored in a certain subdirectory again.
Both issues are fixed with this commit.
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When running as root, skip the unreadable file tests, because, well,
they're probably _not_ unreadable to root unless you've got some
crazy NSA clearance-level honoring operating system shit going on.
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WD iterator: properly identify submodules
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tree_iterator was only working properly for a pathlist containing
file paths. In case of directory paths, it didn't match children
which contradicts GIT_DIFF_DISABLE_PATHSPEC_MATCH and
is different from index_iterator and fs_iterator.
As a consequence head-to-index status reporting for a specific
directory did not work properly -- all files have been reported
as added.
Include additional tests.
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Untangle git_futils_mkdir from git_futils_mkdir_ext - the latter
assumes that we own everything beneath the base, as if it were
being called with a base of the repository or working directory,
and is tailored towards checkout and ensuring that there is no
bogosity beneath the base that must be cleaned up.
This is (at best) slow and (at worst) unsafe in the larger context
of a filesystem where we do not own things and cannot do things like
unlink symlinks that are in our way.
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The previous commit left the comment referencing the earlier state of
the code, change it to explain the current logic. While here, change the
logic to avoid repeating the copy of the base pattern.
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When a file on the workdir has the same or a newer timestamp than the
index, we need to perform a full check of the contents, as the update of
the file may have happened just after we wrote the index.
The iterator changes are such that we can reach inside the workdir
iterator from the diff, though it may be better to have an accessor
instead of moving these structs into the header.
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Test to ensure that when status updates an index, it does not alter
the original mode for file types that are not supported (eg, symlinks
on Windows).
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These tests want to test that we don't recalculate entries which match
the index already. This is however something we force when truncating
racily-clean entries.
Tick the index forward as we know that we don't perform the
modifications which the racily-clean code is trying to avoid.
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Since a diff entry only concerns a single entry, zero the information
for the index side of a conflict. (The index entry would otherwise
erroneously include the lowest-stage index entry - generally the
ancestor of a conflict.)
Test that during status, the index side of the conflict is empty.
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When diffing against an index, return a new `GIT_DELTA_CONFLICTED`
delta type for items that are conflicted. For a single file path,
only one delta will be produced (despite the fact that there are
multiple entries in the index).
Index iterators now have the (optional) ability to return conflicts
in the index. Prior to this change, they would be omitted, and callers
(like diff) would omit conflicted index entries entirely.
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When adding a conflict for some path, remove the staged entry.
Otherwise, an illegal index (with both stage 0 and high-stage
entries) would result.
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When we discover that we want to keep a negative rule, make sure to
clear the error variable, as it we otherwise return whatever was left by
the previous loop iteration.
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We want to use the "checkout: moving from ..." message in order to let
git know when a change of branch has happened. Make the convenience
functions for this goal write this message.
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The signature for the reflog is not something which changes
dynamically. Almost all uses will be NULL, since we want for the
repository's default identity to be used, making it noise.
In order to allow for changing the identity, we instead provide
git_repository_set_ident() and git_repository_ident() which allow a user
to override the choice of signature.
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Given
top
!top/foo
in an ignore file, we should not unignore top/foo. This is an
implementation detail of the git code leaking, but that's the behaviour
we should show.
A negation rule can only negate an exact rule it has seen before.
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Valgrind is now clean except for libssl and libgcrypt.
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This function has one output but can match multiple files, which can be
unexpected for the user, which would usually path the exact path of the
file he wants the status of.
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We consider an entry in .gitmodules to mean that we have a submodule at
a particular path, even if HEAD^{tree} and the index do not contain any
reference to it.
We should ignore that submodule entry and simply consider that path to
be a regular directory.
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When we mention "src" in src/.gitignore, we wrongly consider src/ itself
to be ignored.
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We currently consider CR to start the end of the line, but that means
that we miss cases with CR CR LF which can be used with git to match
files whose names have CR at the end of their names.
The fix from the patch comes from Russell's comment in the issue.
This fixes #2536.
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Fix bugs with negative ignores inside an ignored parent directory
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`git help ignore` has this to say about trailing slashes:
> If the pattern ends with a slash, it is removed for the purpose of
> the following description, but it would only find a match with a
> directory. In other words, foo/ will match a directory foo and
> paths underneath it, but will not match a regular file or a
> symbolic link foo (this is consistent with the way how pathspec
> works in general in Git).
Sure enough, having manually performed the same steps as this test,
`git status` tells us the following:
# On branch master
#
# Initial commit
#
# Changes to be committed:
# (use "git rm --cached <file>..." to unstage)
#
# new file: force.txt
#
# Untracked files:
# (use "git add <file>..." to include in what will be committed)
#
# ../.gitignore
# child1/
# child2/
i.e. neither child1 nor child2 is ignored.
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When writing 'bin/*' in the rules, this means we ignore very file inside
bin/ individually, but do not ignore the directory itself. Thus the
status listing should list both files under bin/, one untracked and one
ignored.
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fix-git-status-list-new-unreadable-folder
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fix-git-status-list-new-unreadable-folder
Conflicts:
include/git2/diff.h
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The diff code was using an "ignored_prefix" directory to track if
a parent directory was ignored that contained untracked files
alongside tracked files. Unfortunately, when negative ignore rules
were used for directories inside ignored parents, the wrong rules
were applied to untracked files inside the negatively ignored
child directories.
This commit moves the logic for ignore containment into the workdir
iterator (which is a better place for it), so the ignored-ness of
a directory is contained in the frame stack during traversal. This
allows a child directory to override with a negative ignore and yet
still restore the ignored state of the parent when we traverse out
of the child.
Along with this, there are some problems with "directory only"
ignore rules on container directories. Given "a/*" and "!a/b/c/"
(where the second rule is a directory rule but the first rule is
just a generic prefix rule), then the directory only constraint
was having "a/b/c/d/file" match the first rule and not the second.
This was fixed by having ignore directory-only rules test a rule
against the prefix of a file with LEADINGDIR enabled.
Lastly, spot checks for ignores using `git_ignore_path_is_ignored`
were tested from the top directory down to the bottom to deal with
the containment problem, but this is wrong. We have to test bottom
to top so that negative subdirectory rules will be checked before
parent ignore rules.
This does change the behavior of some existing tests, but it seems
only to bring us more in line with core Git, so I think those
changes are acceptable.
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and a (failing) test for it.
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When thees is an unreadable folder, we should still be able
to enumerate status.
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