Ask git for the attribute of every conflicted file whenever we load the
file status, so that we recognize the markers it actually wrote. Files
that are set up this way are precisely the ones whose regular content
tends to contain marker-looking lines, so matching a run of at least
seven characters instead is not an option: we'd take the file's own
content for markers and then never consider its conflicts resolved.
One `git check-attr` call covers all conflicted files at once; asking per
file would take seconds when hundreds of files are conflicted, and it
would hurt worst on Windows, where spawning a process is expensive.
Because the lookup rides along with the file status, it costs nothing
when there are no conflicts, and editing .gitattributes during a merge
takes effect on the next refresh.
Commit d94f2f05 dropped the GIT_OPTIONAL_LOCKS=0 env var that we used
to set on every git command, and re-added lock suppression only as a
--no-optional-locks flag on the background files refresh. The intent
was sound — a foreground `git status` should persist git's refreshed
stat-cache — but the change was too broad: it stopped suppressing
optional locks for every other command too.
The one that bites is the main-view diff. When a folder containing
submodules is selected, we render `git diff --submodule -- <dir>`, and
`--submodule` makes git run `git status` inside each submodule to
describe its "modified" state. That status now grabs the submodule's
index.lock. It runs as a PTY task on its own goroutine, so it races
any submodule-mutating action the user triggers — e.g. resetting a
submodule runs `git -C <submodule> stash`, which then fails with
"index.lock: File exists". This is what made submodule/reset_folder
flaky. `git status` is in fact the only command that takes the
optional lock, but the env var also covered its use inside `git diff
--submodule`, inside PTY-run commands, and inside git's own submodule
child processes — none of which a per-command flag reaches cleanly.
Invert the polarity to match how it worked before d94f2f05: the git
command builder disables optional locks on every command by default,
and the single command that benefits from taking the lock — the
foreground files refresh — opts back in. This restores the original
contention avoidance (including against the user's terminal git) while
keeping d94f2f05's stat-cache-persistence win for the foreground
refresh.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
We set GIT_OPTIONAL_LOCKS=0 for every git command we run. That env var
only affects `git status`: it tells git not to take the optional lock it
would otherwise use to write the index back after refreshing the cached
stat information. The intent was to avoid contending for index.lock with
git commands the user runs in a terminal.
The downside is that our `git status` never persists the refreshed
stat-cache. So whenever the working tree's cached stat info goes stale
(e.g. editing files and discarding the changes, or a checkout), every
subsequent status re-hashes the affected files to confirm they're clean,
and stays slow until something else writes the index (such as the user
running `git status` in a terminal).
Fix this by only suppressing optional locks for refreshes that run
unattended in the background; foreground refreshes triggered by a user
action now run a plain `git status` that writes the refreshed index back,
just like the command line does. Background refreshes keep passing
--no-optional-locks so they still can't cause lock contention.
RefreshOptions gains a Background flag that the background routines set,
threaded down to the status command.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Fixes#4890
When Git is configured with status.renames=copies, it can produce
status codes starting with "C" (copy) in addition to "R" (rename).
The file loader was only checking for "R" prefixes, causing copy
operations to be parsed incorrectly and breaking file staging.
This fix extends the status parser to handle both "R" and "C"
prefixes, ensuring proper support for Git's copy detection feature.
Fixes file staging issues when using status.renames=copies configuration.
When enabled, it adds "+n -m" after each file in the Files panel to show how
many lines were added and deleted, as with `git diff --numstat` on the command
line.
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.
Afero is a package that lets you mock out a filesystem with an in-memory filesystem.
It allows us to easily create the files required for a given test without worrying about
a cleanup step or different tests tripping on eachother when run in parallel.
Later on I'll standardise on using afero over the vanilla os package
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
