Yes, yes, this is supposed to be only a band-aid option for `git add -p`
not Doing The Right Thing. But as long as we carry the `--allow-overlap`
option, we might just as well get it right.
This fixes the case where one hunk inserts a line before the first one,
and a hunk whose context overlaps with the first one's appends a line at
the end.
Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
The first thing `git add -p` does is to generate a diff. If this diff
cannot be generated, `git add -p` should not continue as if nothing
happened, but instead fail.
What we *actually* do here is much broader: we now verify for *every*
`run_cmd_pipe()` call that the spawned process actually succeeded.
Note that we have to change two callers in this patch, as we need to
store the spawned process' output in a local variable, which means that
the callers can no longer decide whether to interpret the `return <$fh>`
in array or in scalar context.
This bug was noticed while writing a test case for the diff.algorithm
feature, and we let that test case double as a regression test for this
fixed bug, too.
Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Without this patch, there is actually no test in Git's test suite that
covers the diff.algorithm feature. Let's add one.
We do this by passing a bogus value and then expecting `git diff-files`
to produce the appropriate error message.
Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
In preparation for re-implementing `git add -p` in pure C (where we will
purposefully keep the implementation of `git add -p` separate from the
implementation of `git add -i`), let's verify that the user is told the
same things as in the Perl version when the diff file is either empty or
contains only entries about binary files.
Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
The `git add -p` command offers different prompts for regular diff hunks
vs mode change pseudo hunks vs diffs deleting files.
Let's cover this in the regresion test suite, in preparation for
re-implementing `git add -p` in C.
For the mode change prompt, we use a trick that lets this test case pass
even on systems without executable bit, i.e. where `core.filemode =
false` (such as Windows): we first add the file to the index with `git
add --chmod=+x`, and then call `git add -p` with `core.filemode` forced
to `true`. The file on disk has no executable bit set, therefore we will
see a mode change.
Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
The TTY prerequisite is a rather heavy one: it not only requires Perl to
work, but also the IO/Pty.pm module (with native support, and it
requires pseudo terminals, too).
In particular, test cases marked with the TTY prerequisite would be
skipped in Git for Windows' SDK.
In the case of `git add -p`, we do not actually need that big a hammer,
as we do not want to test any functionality that requires a pseudo
terminal; all we want is to talk the interactive add command to use
color, even when being called from within the test suite.
And we found exactly such a trick earlier already: when we added a test
case to verify that the main loop of `git add -i` is colored
appropriately. Let's use that trick instead of the TTY prerequisite.
While at it, we avoid the pipes, as we do not want a SIGPIPE to break
the regression test cases (which will be much more likely when we do not
run everything through Perl because that is inherently slower).
Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
In this developer's workflows, it often happens that a hunk needs to be
edited in a way that adds lines, and even reduces the context
Let's add a regression test for this.
Note that just like the preceding test case, the new test case is *not*
handled gracefully by the current `git add -p`. It will be handled
correctly by the upcoming built-in `git add -p`, though.
Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
It is not only laziness that we simply spawn `git diff -p --cached`
here: this command needs to use the pager, and the pager needs to exit
when the diff is done. Currently we do not have any way to make that
happen if we run the diff in-process. So let's just spawn.
Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Well, it is not a full implementation yet. In the interest of making
this easy to review (and easy to keep bugs out), we still hand off to
the Perl script to do the actual work.
The `patch` functionality actually makes up for more than half of the
1,800+ lines of `git-add--interactive.perl`. It will be ported from Perl
to C incrementally, later.
Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
This is yet another command, ported to C. It builds nicely on the
support functions introduced for other commands, with the notable
difference that only names are displayed for untracked files, no
file type or diff summary.
Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
This is a relatively straight-forward port from the Perl version, with
the notable exception that we imitate `git reset -- <paths>` in the C
version rather than the convoluted `git ls-tree HEAD -- <paths> | git
update-index --index-info` followed by `git update-index --force-remove
-- <paths>` for the missed ones.
While at it, we fix the pretty obvious bug where the `revert` command
offers to unstage files that do not have staged changes.
Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
After `status` and `help`, it is now turn to port the `update` command
to C, the second command that is shown in the main loop menu of `git add
-i`.
This `git add -i` command is the first one which lets the user choose a
subset of a list of files, and as such, this patch lays the groundwork
for the other commands of that category:
- It teaches the `print_file_item()` function to show a unique prefix
if we found any (the code to find it had been added already in the
previous patch where we colored the unique prefixes of the main loop
commands, but that patch uses the `print_command_item()` function to
display the menu items).
- This patch also adds the help text that is shown when the user input
to select items from the shown list could not be parsed.
- As `get_modified_files()` clears the list of files, it now has to take
care of clearing the _full_ `prefix_item_list` lest the `sorted` and
`selected` fields go stale and inconsistent.
Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
The `upgrade`, `revert` and `add-untracked` commands allow selecting
multiple entries. Let's extend the `list_and_choose()` function to
accommodate those use cases.
Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
In the `update` command of `git add -i`, we are primarily interested in the
list of modified files that have worktree (i.e. unstaged) changes.
At the same time, we need to determine _also_ the staged changes, to be
able to produce the full added/deleted information.
The Perl script version of `git add -i` has a parameter of the
`list_modified()` function for that matter. In C, we can be a lot more
precise, using an `enum`.
The C implementation of the filter also has an easier time to avoid
unnecessary work, simply by using an adaptive order of the `diff-index`
and `diff-files` phases, and then skipping files in the second phase
when they have not been seen in the first phase.
Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
This imitates the code to show the help text from the Perl script
`git-add--interactive.perl` in the built-in version.
To make sure that it renders exactly like the Perl version of `git add
-i`, we also add a test case for that to `t3701-add-interactive.sh`.
Signed-off-by: Slavica Đukić <slawica92@hotmail.com>
Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
The error messages as well as the unique prefixes are colored in `git
add -i` by default; We need to do the same in the built-in version.
Signed-off-by: Slavica Đukić <slawica92@hotmail.com>
Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
With this change, we print out the same colored help text that the
Perl-based `git add -i` prints in the main loop when question mark is
entered.
Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Just like in the Perl script `git-add--interactive.perl`, for each
command a unique prefix is determined (if there exists any within the
given parameters), and shown in the list, and accepted as a shortcut for
the command.
To determine the unique prefixes, as well as to look up the command in
question, we use a copy of the list and sort it.
While this might seem like overkill for a single command, it will make
much more sense when all the commands are implemented, and when we reuse
the same logic to present a list of files to edit, with convenient
unique prefixes.
At the start of the development of this patch series, a dedicated data
structure was introduced that imitated the Trie that the Perl version
implements. However, this was deemed overkill, and we now simply sort
the list before determining the length of the unique prefixes by looking
at each item's neighbor. As a bonus, we now use the same sorted list to
perform a binary search using the user-provided prefix as search key.
Original-patch-by: Slavica Đukić <slawica92@hotmail.com>
Helped-by: SZEDER Gábor <szeder.dev@gmail.com>
Signed-off-by: Johannes Schindelin <Johannes.Schindelin@gmx.de>
The reason why we did not start with the main loop to begin with is that
it is the first user of `list_and_choose()`, which uses the `list()`
function that we conveniently introduced for use by the `status`
command.
Apart from the "and choose" part, there are more differences between the
way the `status` command calls the `list_and_choose()` function in the
Perl version of `git add -i` compared to the other callers of said
function. The most important ones:
- The list is not only shown, but the user is also asked to make a
choice, possibly selecting multiple entries.
- The list of items is prefixed with a marker indicating what items have
been selected, if multi-selection is allowed.
- Initially, for each item a unique prefix (if there exists any within
the given parameters) is determined, and shown in the list, and
accepted as a shortcut for the selection.
These features will be implemented later, except the part where the user
can choose a command. At this stage, though, the built-in `git add -i`
still only supports the `status` command, with the remaining commands to
follow over the course of the next commits.
In addition, we also modify `list()` to support displaying the commands
in columns, even if there is currently only one.
The Perl script `git-add--interactive.perl` mixed the purposes of the
"list" and the "and choose" part into the same function. In the C
version, we will keep them separate instead, calling the `list()`
function from the `list_and_choose()` function.
Note that we only have a prompt ending in a single ">" at this stage;
later commits will add commands that display a double ">>" to indicate
that the user is in a different loop than the main one.
Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
For simplicity, we only implemented the `status` command without colors.
This patch starts adding color, matching what the Perl script
`git-add--interactive.perl` does.
Original-Patch-By: Daniel Ferreira <bnmvco@gmail.com>
Signed-off-by: Slavica Đukić <slawica92@hotmail.com>
Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
This implements the `status` command of `git add -i`. The data
structures introduced in this commit will be extended later, as needed.
At this point, we re-implement only part of the `list_and_choose()`
function of the Perl script `git-add--interactive.perl` and call it
`list()`. It does not yet color anything, or do columns, or allow user
input.
Over the course of the next commits, we will introduce a
`list_and_choose()` function that uses `list()` to display the list of
options and let the user choose one or more of the displayed items. This
will be used to implement the main loop of the built-in `git add -i`, at
which point the new `status` command can actually be used.
Signed-off-by: Daniel Ferreira <bnmvco@gmail.com>
Signed-off-by: Slavica Đukić <slawica92@hotmail.com>
Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Make the diffstat interface (namely, the diffstat_t struct and
compute_diffstat) no longer be internal to diff.c and allow it to be used
by other parts of git.
This is helpful for code that may want to easily extract information
from files using the diff machinery, while flushing it differently from
how the show_* functions used by diff_flush() do it. One example is the
builtin implementation of git-add--interactive's status.
Signed-off-by: Daniel Ferreira <bnmvco@gmail.com>
Signed-off-by: Slavica Đukić <slawica92@hotmail.com>
Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
This is hardly the first conversion of a Git command that is implemented
as a script to a built-in. So far, the most successful strategy for such
conversions has been to add a built-in helper and call that for more and
more functionality from the script, as more and more parts are
converted.
With the interactive add, we choose a different strategy. The sole
reason for this is that on Windows (where such a conversion has the most
benefits in terms of speed and robustness) we face the very specific
problem that a `system()` call in Perl seems to close `stdin` in the
parent process when the spawned process consumes even one character from
`stdin`. And that just does not work for us here, as it would stop the
main loop as soon as any interactive command was performed by the
helper. Which is almost all of the commands in `git add -i`.
It is almost as if Perl told us once again that it does not want us to
use it on Windows.
Instead, we follow the opposite route where we start with a bare-bones
version of the built-in interactive add, guarded by the new
`add.interactive.useBuiltin` config variable, and then add more and more
functionality to it, until it is feature complete.
At this point, the built-in version of `git add -i` only states that it
cannot do anything yet ;-)
Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
While in the vicinity of this code, let's document what the rather
convoluted conditions in the hunk-splitting loop actually _mean_: while
they look simple enough, it took a bit of brain-twisting even for the
developer who wrote this code to understand after a few months what is
going on in this part. And if even the person who wrote this has a hard
time understanding the code... then it needs commenting ;-)
Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
While it is true that the diffs Git generates can only contain comment
lines at the end of a hunk, and really only when indicating that a line
does not end in a Line Feed, comment lines _are_ a valid diff construct.
Let's play it safe by handling those when splitting hunks.
Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
A recently-reported bug had its root cause in the `splittable_into`
variable overcounting the number of potential hunks (the symptom was
misleading, it said that there was an unhandled diff marker).
Let's make sure to catch these things earlier, with a less misleading
error message.
Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Let's be a bit more defensive in the code that finds the next line: if
we are already at the end of the buffer, we definitely do _not_ want to
return an offset that is outside the buffer!
Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
When counting how many lines a hunk can be split into, we need to be
careful to take line comments in the diff into account, i.e. lines
starting with a backslash. Example:
[...]
-}
\ No newline at end of file
+}
Logically, these line comments belong to the line preceding them,
therefore we need to pretend that they have the same diff marker (space,
minus or plus character).
This fixes https://github.com/git-for-windows/git/issues/2364.
Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
The codepath that reads the index.version configuration was broken
with a recent update, which has been corrected.
* ds/feature-macros:
repo-settings: read an int for index.version
Update installation procedure for Perforce on MacOS in the CI jobs
running on Azure pipelines, which was failing.
* js/azure-ci-osx-fix:
ci(osx): use new location of the `perforce` cask
Several config options were combined into a repo_settings struct in
ds/feature-macros, including a move of the "index.version" config
setting in 7211b9e (repo-settings: consolidate some config settings,
2019-08-13).
Unfortunately, that file looked like a lot of boilerplate and what is
clearly a factor of copy-paste overload, the config setting is parsed
with repo_config_ge_bool() instead of repo_config_get_int(). This means
that a setting "index.version=4" would not register correctly and would
revert to the default version of 3.
I caught this while incorporating v2.24.0-rc0 into the VFS for Git
codebase, where we really care that the index is in version 4.
This was not caught by the codebase because the version checks placed
in t1600-index.sh did not test the "basic" scenario enough. Here, we
modify the test to include these normal settings to not be overridden by
features.manyFiles or GIT_INDEX_VERSION. While the "default" version is
3, this is demoted to version 2 in do_write_index() when not necessary.
Signed-off-by: Derrick Stolee <dstolee@microsoft.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
A few days ago Travis CI updated their existing OSX images, including
the Homebrew database in the xcode10.1 OSX image that we use. Since
then installing dependencies in the 'osx-gcc' job fails when it tries
to link gcc@8:
+ brew link gcc@8
Error: No such keg: /usr/local/Cellar/gcc@8
GCC8 is still installed but not linked to '/usr/local' in the updated
image, as it was before this update, but now we have to link it by
running 'brew link gcc'. So let's do that then, and fall back to
linking gcc@8 if it doesn't, just to be sure.
Our builds on Azure Pipelines are unaffected by this issue. The OSX
image over there doesn't contain the gcc@8 package, so we have to
'brew install' it, which already takes care of linking it to
'/usr/local'. After that the 'brew link gcc' command added by this
patch fails, but the ||-chained fallback 'brew link gcc@8' command
succeeds with an "already linked" warning.
Signed-off-by: SZEDER Gábor <szeder.dev@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Leakfix.
* cb/pcre2-chartables-leakfix:
grep: avoid leak of chartables in PCRE2
grep: make PCRE2 aware of custom allocator
grep: make PCRE1 aware of custom allocator
The atomic push over smart HTTP transport did not work, which has
been corrected.
* bc/smart-http-atomic-push:
remote-curl: pass on atomic capability to remote side
The installation instruction for zsh completion script (in
contrib/) has been a bit improved.
* mb/clarify-zsh-completion-doc:
completion: clarify installation instruction for zsh
The Azure Pipelines builds are failing for macOS due to a change in the
location of the perforce cask. The command outputs the following error:
+ brew install caskroom/cask/perforce
Error: caskroom/cask was moved. Tap homebrew/cask-cask instead.
So let's try to call `brew cask install perforce` first (which is what
that error message suggests, in a most round-about way).
Prior to 672f51cb we used to install the 'perforce' package with 'brew
install perforce' (note: no 'cask' in there). The justification for
672f51cb was that the command 'brew install perforce' simply stopped
working, after Homebrew folks decided that it's better to move the
'perforce' package to a "cask". Their justification for this move was
that 'brew install perforce' "can fail due to a checksum mismatch ...",
and casks can be installed without checksum verification. And indeed,
both 'brew cask install perforce' and 'brew install
caskroom/cask/perforce' printed something along the lines of:
==> No checksum defined for Cask perforce, skipping verification
It is unclear why 672f51cb used 'brew install caskroom/cask/perforce'
instead of 'brew cask install perforce'. It appears (by running both
commands on old Travis CI macOS images) that both commands worked all
the same already back then.
In any case, as the error message at the top of this commit message
shows, 'brew install caskroom/cask/perforce' has stopped working
recently, but 'brew cask install perforce' still does, so let's use
that.
CI servers are typically fresh virtual machines, but not always. To
accommodate for that, let's try harder if `brew cask install perforce`
fails, by specifically pulling the latest `master` of the
`homebrew-cask` repository.
This will still fail, of course, when `homebrew-cask` falls behind
Perforce's release schedule. But once it is updated, we can now simply
re-run the failed jobs and they will pick up that update.
As for updating `homebrew-cask`: the beginnings of automating this in
https://dev.azure.com/gitgitgadget/git/_build?definitionId=11&_a=summary
will be finished once the next Perforce upgrade comes around.
Helped-by: SZEDER Gábor <szeder.dev@gmail.com>
Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Derrick Stolee <dstolee@microsoft.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
According to t/README, test_must_fail() should only be used to test for
failure in Git commands. Replace the invocations of
`test_must_fail grep` with `! grep`.
Signed-off-by: Denton Liu <liu.denton@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
