When loading the files of a commit we passed --no-renames, so a rename
showed up as a separate delete and add rather than a single R entry.
That made it impossible to work with a rename that also modifies the
file: the modifications were spread across a full deletion and a full
addition instead of appearing as the handful of lines that actually
changed. The staging view already shows renames and lets you stage
their hunks, so there was no good reason for the patch builder to
differ; the flag was only there because the commit-file parser couldn't
cope with the rename record format.
Switch the commit-file loader and the per-file diff to --find-renames,
teach the parser about the rename record (a status followed by two
paths), and carry the previous path through the patch builder so the
diff for a rename is loaded with both paths, which is what makes git
emit the rename in the first place.
A whole-file selection keeps the rename in the header, so the rename
moves or is discarded together with the file's contents. A partial
selection instead strips the rename metadata and points the header at
the new path, so applying the patch only changes the contents and
leaves the rename in place; the blob index line is kept so that a 3-way
apply can still fall back to a blob merge.
Discarding a renamed file from a commit now discards both the new and
the old path, so the new file is removed and the old one is restored.
Changing the rename similarity threshold refreshes the commit files
panel too, not just the files panel, so that a rename can turn into a
delete and add or back. It is disabled while building a patch, however,
because the patch builder caches each file's diff by path and would
desync if a rename changed into a delete and add underneath it.
Finally, copying a file's diff from the commit files panel now passes
both paths for a rename, so the copied diff shows the rename instead of
a new-file add.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
This is probably the less severe case, but it could still be an issue for people
who have many modified top-level files they want to discard, and have
showRootItemInFileTree set to false; they could select all those files by
pressing 'v' and '>'.
Previously it would iterate over all changed files and call git checkout or git
reset for each one, which can take forever if there are hundreds or thousands of
files. Now it batches these into a single command if possible (taking care of
still passing the individual path names to the git call rather than just the
directory, which is necessary for making it work correctly when filtering --
this was actually broken for the "Discard unstaged changes" command, which is
fixed here).
We have integration tests for this functionality, but those only test the
behavior, not the performance. In these unit tests you can see that we make
individual calls to git checkout and git reset for each file, which is very slow
when there are lots of files.
Previously it would only check that *if* removeFile was called, the passed
argument was the expected one; but it didn't check whether it was called at all.
Improve this by recording the file names that are removed, and checking them at
the end of each scenario.
This is going to be even more important for the tests that we are about to add
in the next commit, because for those there can be several calls to removeFile
in a single scenario.
When toggling the value in the UI we simply overwrite the value in UserConfig;
this would be bad if there was ever a chance that we want to write the user
config back to disk, but it is very unlikely that we can do that, because
currently we have no way to tell which parts of the config come from the global
config file and which ones come from a repo-local one.
Some people have post-checkout hooks that take a lot of time, which makes
discarding changes slow. You can argue that a post-checkout hook should only run
when you switch branches, so it doesnt't have to run when checking out single
files or directories. You can also argue that lazygit might have implemented
discarding changes by taking the current patch and applying it in reverse, which
wouldn't have run a post-checkout hook either.
So disable them for all cases where we use git checkout with a path; this
includes checking out a file from the commit files view.
In go 1.22, loop variables are redeclared with each iteration of the
loop, rather than simple updated on each iteration. This means that we
no longer need to manually redeclare variables when they're closed over
by a function.
This changes GetRepoPaths() to pull information from `git rev-parse`
instead of effectively reimplementing git's logic for pathfinding. This
change fixes issues with bare repos, esp. versioned homedir use cases,
by aligning lazygit's path handling to what git itself does.
This change also enables lazygit to run from arbitrary subdirectories of
a repository, including correct handling of symlinks, including "deep"
symlinks into a repo, worktree, a repo's submodules, etc.
Integration tests are now resilient against unintended side effects from
the host's environment variables. Of necessity, $PATH and $TERM are the
only env vars allowed through now.
By constructing an arg vector manually, we no longer need to quote arguments
Mandate that args must be passed when building a command
Now you need to provide an args array when building a command.
There are a handful of places where we need to deal with a string,
such as with user-defined custom commands, and for those we now require
that at the callsite they use str.ToArgv to do that. I don't want
to provide a method out of the box for it because I want to discourage its
use.
For some reason we were invoking a command through a shell when amending a
commit, and I don't believe we needed to do that as there was nothing user-
supplied about the command. So I've switched to using a regular command out-
side the shell there
