File navigation works out where the neighbouring file begins by walking
the rows itself, forwards or, more laboriously, backwards. A menu of the
diff's files needs the same rows, all of them at once.
Extract fileStarts, which answers that for the whole diff, and have
navigation pick its neighbour out of the answer. The two then agree on
where a file begins by construction, and the walk backwards over a file
goes away.
Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
The identity of a row is reported in the repo's terms already: the pane
previewing the custom patch shows a diff of the two trees the patch was
materialized into, and the paths of those trees are mapped back to the
repo's files before anything sees them. Asking which file a row belongs
to, which file navigation does, was the one query that skipped that step
and answered with the tree's path.
Pull the mapping out of inRepoTerms so that it can be applied to a bare
path, and put filePaths through it. A menu listing the files of the diff
will want to show them by name; where a renderer states the path of each
side of a change, this also has both halves belong to one file rather
than to the two trees.
Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Reading a change in lazygit and saying something about it on GitHub
means finding the line again in the browser: open the pull request, find
the commit, find the file, scroll to the line. The line is already under
the cursor here.
Bind G in the focused main view, the key the commits panel opens the
pull request with, to open it at the line the selection is on. The URL
names the commits whose diff is on screen, so that the line numbers of
the diff are the ones the page shows, the file by the SHA-256 of its
repo-relative path, and the line by the side of the diff it is on: R for
the new version of the file, L for the old one, where a deleted line is.
GitHub documents none of that; the form was read off the URLs its own
pages carry.
One commit is named by its hash. A range of them is named by the commit
the range starts after and the commit it ends at, the form the chooser
above a pull request's files uses. The commit a range starts after is
the parent of its oldest commit; where the range starts where the pull
request itself does, that parent is none of the pull request's own
commits, and the keyword BASE stands for it.
Which branch's pull request that is depends on the panel beneath. The
commits panel lists the commits of the checked-out branch, the
sub-commits panel those of the branch drilled into, and the commit files
panel shows the files of a commit from either. In a stack of branches,
each with a pull request of its own, those lists include the commits of
the branches below, and each of those commits is in the pull request of
its own branch. So the command looks upwards from the commit for the
nearest head of a branch with a pull request, and takes the listed
branch if it finds none. Panels showing a diff that no pull request has
a view of don't answer, and the command isn't offered over their diffs
at all.
Neither is it offered over a diff that is not the commit's own, where
the line numbers on screen are not the ones the page shows: a diff
against another ref in diffing mode, and the custom patch, whose lines
sit at the numbers the patch gives them.
A pull request holds only the commits of its branch that are pushed, and
its pages say they can't find any other commit. So the command refuses
where a commit of the diff is not one of the pull request's. Amend a
commit in the middle of the branch, and the diffs of the commits below
it still open; the ones above it sit on hashes the remote doesn't have.
A commit from before the branch, in a main branch already, is refused
too, and so is a range of commits that reaches across the head of a
branch in a stack, since its commits are in two pull requests. Whether a
commit is pushed is known only for the upstream of the listed branch.
For a branch lower in a stack, that is right as long as the branches of
the stack are pushed together.
Only GitHub pull requests are known, since that is where the pull
request data comes from. The whole path can't be exercised headlessly:
no pull request reaches the model without a GitHub token, so the test
covers where the command is offered and the three reasons it refuses.
The URL is unit-tested instead, both the anchor of a line and the way
the commits are named, and so is the choice of a branch in a stack.
Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
Two questions the pane answers from the panel beneath it each reach for
it themselves, guard included. Opening a line in a pull request needs it
twice more, for the branch and for the commit.
Extract sidePanelBeneath, which is also where the guard against asking
for the panel beneath an off-stack pane now belongs.
Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
A diff line carries the absolute path of its file, and both panels
acting on such a line turn it into the repo-relative one git speaks
themselves. Opening a line in a pull request needs that path too, to
name the file to GitHub by it.
Extract repoRelativePath, and have both panels use it. The files panel
gains the check for a path outside the repo that the other one had; a
path it used to pass on matches no file of the working tree either.
Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Two panels offer a branch's pull request today, and each looks it up in
the model's map itself and builds the same disabled reason from the same
string. The focused main view is about to offer a line of the diff in
that pull request, which would make three.
Put the lookup and the disabled reason on the host helper, beside the
pull request URL it already builds, and have both panels ask it.
Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Non-suspending graphical editors can take a moment to reach the
foreground, leaving a modified click with no visible response. Briefly
reverse the clicked row's selection bar after launching the editor so
the registered action is apparent.
Arm the flash only for a resolved diff row, keep newer clicks safe from
stale timers, and rely on suspension to clear the transient state before
terminal editors take over.
Clickable renderer gutters are small and unavailable on some diff rows.
Make the whole row an editor target without changing focus or selection,
including while a popup is focused.
Use both Alt and Shift because terminal mouse protocols do not deliver
either modifier consistently across Ghostty, iTerm2, and VS Code.
The selected-line keybinding and a modified click need the same path
from a rendered diff row to the editor. Give that operation an explicit
view-line argument before adding the mouse gesture.
In the staging panel it used to copy the selected text verbatim, but in
the focused main view it copies the diff lines (that's also what the
toast says), and now that the staging panel is gone, we can change the
text to make it more specific.
Hunk defaults and wrapping no longer belong to a staging panel. Rename both
public keys with automatic migration, and remove panel-era English strings so
config, UI, schema, and generated docs describe the surviving interface.
Co-Authored-By: GitHub Copilot <copilot@github.com>
The focused diff addresses patch lines by identity, so changing how much
context is rendered cannot invalidate an active patch. Remove the
explorer era refusal and prove that another line can still be toggled
correctly after the rerender.
Co-Authored-By: GitHub Copilot <copilot@github.com>
Nothing routes to the explorer contexts after line actions and file entry
moved into the normal main pair. Delete their contexts, views, main-pair
wiring, discovery API, test drivers, and selection-state package so the
surviving diff view is the only implementation.
Their names go from the contexts a custom command may bind to as well, so
that a config still naming one is reported as the config error it now is
rather than taken as a context we simply failed to find.
Co-Authored-By: GitHub Copilot <copilot@github.com>
Focused main views now own selection, staging, patch construction, copying,
and context-size rerenders. Remove the parallel controller/helper stack and
its refresh scopes, while retaining custom-patch reset as mode behavior.
Co-Authored-By: GitHub Copilot <copilot@github.com>
The next commit deletes the controller this lives in, while the helper
itself is still wanted: it is what makes a copied selection paste
straight into code. Move it first, so that the deletion is a deletion.
Co-authored-by: Claude Opus 5 (1M context) <noreply@anthropic.com>
Enter and double-click should take users to the diff where line actions now
live, whether the file belongs to the working tree or a commit. Share the
existing focus, raw-fallback, and selection setup while retaining directory,
submodule, and conflict-specific behavior.
Co-Authored-By: GitHub Copilot <copilot@github.com>
A focused diff must replace the patch builder's whole-file toggle
without losing file creation or deletion metadata. Ordinary modifications
and renames must remain line-level selections even when every changed
content line is selected.
Ask the patch builder's canonical raw diff whether it consists of one
hunk containing only additions or only deletions and no context. Use the
whole-file operation only when the selection also covers every change.
Co-Authored-By: GitHub Copilot <copilot@github.com>
The hint was raised on entering the staging panel, once, to explain that
the selection mode there had changed and how to get the old one back. That
panel is gone, and with it the moment the hint was tied to; what is left is
a string nothing prints and a flag nothing reads.
The advice it carried is not lost: the option it names is documented, and
the key that switches modes is on screen while a diff is focused.
Co-authored-by: Claude Opus 5 (1M context) <noreply@anthropic.com>
Space in the pane previewing the patch had nothing to act on: everything
there is in the patch already, so it can only mean taking those lines back
out, in the way that space in the staged side of the working tree's diff
only unstages.
A line of the patch can't be found by its number: the patch renumbers
whatever follows a change it leaves out, so a line of it names a line of
the commit's diff that isn't the one shown. A line is identified instead
by its position among its file's changes, counted in the diff the patch is
shown as. That is the same position it has among the changes the patch
holds for the file, since both are in the order the file has them. This
holds however the rendering came out, so a renderer that groups a hunk's
deletions before its additions, or leaves a change out altogether, no
longer matters.
The pane's rows are stated in terms of the trees the patch was
materialized into, so the paths come back to the repo's own before
anything is looked up in them. This also lets the lines there be copied
and edited, as the lines of a commit's diff can be.
Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
The pane beside a commit's diff showed the patch being built from it by
assembling the text itself. That text could not be handed to a diff
renderer the way a diff can: a stdin filter might have coped, but a tool
that diffs two files could not. Its idea of how much context to show
around a hunk was also its own rather than git's.
Materialize the patch instead: write each of its files as it is before the
patch into one tree and as it is after into another, and let git diff the
two trees. The patch becomes a diff of real files, rendered by whatever
renders the rest of them, with git's own context around it. Its lines can
then be pointed at; taking them back out of the patch will need that.
The trees are named a and b, so that with git's own prefixes suppressed
the paths read like an ordinary diff's over the repo's own paths. They are
written when the patch changes rather than when it is shown, the patch
builder counting its own versions for that, and they go away with the
patch.
A renamed file is materialized under the name the patch expects to find it
under. Where the patch carries the rename, that is the name the file had
before, so the rename comes out as a rename. git names the trees
themselves in the two rename lines, having only the two paths to go by.
Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
A patch built from what is on screen has to show what is in it, over the
diff those lines were taken from — which may be a diff renderer's
rendering of it, whose bytes are none of ours to touch.
So the marks are drawn in a gutter over the content, from the lines the
patch holds rather than from where they were drawn last. They are worked
out again whenever a pane's content settles and whenever the patch
itself changes. Working them out as the content settles keeps them right
across a renderer switch, a change of context size, or a walk through
the commits.
They are shown whenever the main view shows the diff the patch is built
from, whether or not it has the focus. The pane beside the diff previews
the patch all the while, and marks that came and went with the focus
would look like a bug while browsing. A diff of any other commit gets
none.
Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
The five panels that show a commit's diff now offer on it what the patch
explorer offers on the one file it can show at a time: space takes the
selected lines into the custom patch being built, or back out of it again,
and d takes them out of the commit itself.
So a patch can be built straight from the diff already on screen, over
several files at once and without entering the commit's files first — and
from a stash entry or a reflog entry too, whose diffs the explorer could
reach but which had no patch preview of their own to show for it.
The two arrive together because they are one answer to what a commit's diff
offers, and because d needs exactly what space builds: a patch of the
selection, which the rebase then removes from the commit. Which of the two
space is doing is decided by the first selected line, as toggling a file in
the commit files panel is, and the selection then moves past the lines
dealt with — they are still in the diff, a patch leaving the commit alone,
so a second press would otherwise take them straight back out.
Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Which line of a file a diff row is, in the terms a patch is built in, is
asked in two places already — staging a selection and editing a hunk — and
is about to be asked in a third, of a commit's diff rather than the working
tree's. The rule is the same one everywhere: an addition is where it sits in
the new version of the file, a deletion where it sat in the old one.
So the row is asked for its identity and the patch package for the lines
with those identities, instead of walking the diff working the identities
out again.
Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Removing lines from a commit, moving a custom patch out of one, undoing
either — none of it goes through the focused main view, so a selection over
that commit's diff was left where it was, painted over a rendering of a diff
that no longer exists.
Every render now asks whether it is showing a different diff than the one on
screen, which is what a rewritten commit looks like, and puts the selection
back on the change that has taken its place — the same reveal an action in
the view does for itself. It stands down for a render of the same diff,
where a selection, perhaps a range still being made, is exactly right as it
is, and for one that something more precise is already waiting to place.
The key a render is remembered under moves ahead of anything that might
change the command's arguments, so that it says which diff is being
rendered and nothing else.
Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
It is built entirely on that helper, and the render chokepoint that is about
to want it lives in the gui package, which cannot reach a controller.
Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Five panels show a commit's diff in the focused main view — one file of it
from the commit files panel, the whole of it from the commits, sub-commits,
stash and reflog panels — and each answered for that diff itself, in the
same words.
Have them share one object instead, told only which diff it is, so that what
follows has a single place to say what can be done to a commit's diff and
needs saying once rather than five times.
Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
The staging view can hand the hunk you are on to an editor and apply what
comes back, which is how you stage something the diff cannot express: half
of a changed line, or a change written differently from either side. The
focused main view has to be able to do the same before that view can go.
The hunk is git's own, context and all, rather than lazygit's block of
adjacent changes: an editable patch is one that still applies, and the
context lines are what let git place it. What the editor leaves behind is
applied whole rather than matched against the file's diff again, the point
being that it says something the diff didn't.
Co-authored-by: Claude Opus 5 (1M context) <noreply@anthropic.com>
Editing a hunk points an editor at a patch we wrote to a temp file and
waits. Nothing about the repo has changed when the editor returns: the
change lands when the caller applies what came back. But the suspend path
this went through refreshes as soon as the subprocess exits, so it reads
the state from before the patch is applied and then races the caller's own
refresh to publish it. Whichever lands last wins, and when it is the stale
one the files panel goes on showing the file as it was before the edit
until something else refreshes.
The caller is the one that knows when there is something new to see, and
both callers already refresh once they have applied the patch, so the
refresh in the middle only ever had a wrong answer to give.
Being a publish-order race, it doesn't reproduce reliably enough for a
test; holding a background refresh between its read and its publish shows
it every time.
Co-authored-by: Claude Opus 5 (1M context) <noreply@anthropic.com>
Staging a selection walks the file's diff to find the lines the user
pointed at, by where each of them sits in the file. The next commit needs
the same answer for a single row, so pull the walk out of the staging path
before there are two copies of it.
Co-authored-by: Claude Opus 5 (1M context) <noreply@anthropic.com>
Two space presses in quick succession only staged one hunk. Input is
withheld until the refresh has landed, which is enough where the diff is
rebuilt on the spot, but the main view re-renders asynchronously: the
selection only moves to the next change once that render is on screen, so
the second press acted on lines that were no longer in the diff, and
staged nothing.
So the wait is now for the selection to be where the work carries on from,
rather than for the model. A restore therefore has to say when it is done —
which it can be either way, since a view given a message rather than a
re-render now gives up the restore it was holding instead of leaving it to
claim some later render.
Co-authored-by: Claude Opus 5 (1M context) <noreply@anthropic.com>
EndBlockingEvents dispatches the keys buffered during a block from inside its
own call, so a keybinding handler runs in the middle of whatever the caller was
doing. If a caller ends the block partway through updating the screen, that
handler acts on state the caller has yet to finish writing.
No caller does that today; both of them end their block from a UI-thread
callback of their own, with nothing left to do afterwards. The commit after this
one adds a caller that can. It ends the block from a render restore, and a
render of the two main panes resolves that restore halfway through laying the
panes out.
Queue the replay through Update instead, so the buffered keys arrive on a later
pass of the loop, as they would have if the user had pressed them then. Input
stays withheld until that pass runs. Gui events are dispatched in preference to
queued work, so a key pressed in between would otherwise be handled ahead of the
keys buffered before it.
The replay's error now reaches the error handler along with every other
handler's, and EndBlockingEvents has nothing left to return.
Some merge conflicts can only be resolved by picking a side. The files
panel explains those rather than diffing them, and where one side deleted
the file and the other modified it, git's diff of that modification is
shown below the explanation. The focused main view took those change lines
for a diff of its own. It drew a selection over them and offered to stage
hunks of a file whose conflict staging can't resolve.
So have a render say whether it holds the diff the panel offers in the
main view, and put a selection only on one that does. Every diff render
already goes through NewMainViewDiffTask, so it says so for itself; the
custom patch preview, assembled as text rather than run as a command, says
so through NewMainViewDiffStringTask. Establishing a selection asks the
pane the same question rather than looking for change lines itself.
The selection has been wrong over this content since "Show a selection in
the focused main view" introduced it, and the fix belongs there. It lands
here instead because a render had no way to say what it holds until "Show
git's own diff when the renderer's can't be acted on" gave every diff
render one constructor to go through.
Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
A diff renderer may lay a diff out however it likes: line numbers in a
gutter, the +/- column replaced by colour, the two sides in columns. Once
it has, we can only tell which line of which file a row shows if the
renderer says so. Under a renderer that doesn't say, the main view holds
a diff that can be read but not staged, edited or copied from. That is no
good now that the main view is where you stage.
So focusing it brings git's own diff instead, and every re-render while it
stays focused keeps to that, so staging a hunk doesn't flip back. Browsing
is untouched: you see what the renderer produced until you focus the view
to act on it.
Whether the renderer says anything is settled by asking it rather than by
watching it work: run it on empty input and see whether it announces the
protocol. Announcing is a property of the renderer, so the answer is known
before we render anything, and a diff with no lines to describe can't fool
it. Watching would have to see a diff go by first, and a binary file's diff
holds nothing that would tell the two cases apart. The answer is remembered
until the renderer changes. git itself is asked the same question, with the
renderer's own arguments, since it announces itself for exactly the formats
whose output can't be read back as a diff.
Co-authored-by: Claude Opus 5 (1M context) <noreply@anthropic.com>
Two things about a diff command follow from what its output is for: whether
the diff renderer produces it, and whether it is coloured. That was a
`plain` flag, which covers two of the three cases — the diff as configured,
and git's own uncoloured diff for building patches out of — and leaves no
room for the third, which is about to be needed: git's own diff, coloured,
for showing where the renderer's version of it can't be acted on.
So the flag becomes a mode. It also takes over deciding the colour, which
each command spelled out for itself, and it settles a question the flag
couldn't put: whether ignoring whitespace applies. It is about what the user
wants to see, so it holds for anything shown, and not for a diff a patch is
built from, which has to describe every change.
Co-authored-by: Claude Opus 5 (1M context) <noreply@anthropic.com>
Staging in the main view leaves you looking at the working tree's diff with
everything you meant to stage in the index — and, until now, having to go
back to the files panel to commit it. The commit keys, and the one that
finds the commit a fixup belongs to, are offered there too, so that the
whole staging-to-committing round happens in one place.
They act on the working tree, which the main view only sometimes shows, so
they do nothing over a commit's or a stash's diff — browsing history can't
commit by accident — and are listed only where they do something. The check
happens per press: what the main view is showing changes as the user moves
about, while the bindings are registered once.
Co-authored-by: Claude Opus 5 (1M context) <noreply@anthropic.com>
The remove key now works on a diff selection the way it does in the staging
view: on the unstaged side it throws the selected lines away, which it asks
about first, and on the staged side it takes them out of the index, which is
unstaging and needs no warning.
It goes through the same path as staging, so that everything around the
action behaves identically — the selection lands on the change that took the
place of the discarded one, and the focus follows the side it acted on.
Co-authored-by: Claude Opus 5 (1M context) <noreply@anthropic.com>
Each side of a file's diff has a pane of its own, but a pane is only shown
while its side has something in it: staging the last unstaged change takes
the upper pane away, and unstaging the last staged one takes the lower one
away. The focus follows into the pane that is left, and the selection has to
be waiting there when it arrives — on the lines just acted on, which is where
they are now, unless they were discarded rather than moved, in which case on
what is left of the file. The pane being moved to shows no selection until
the restore places one, so that the selection it was left with the last time
it was used doesn't appear for a frame.
Whether the acted-on side still holds anything is a question the model can't
answer: a refresh only queues its update, and by the time it lands the
re-render this has to ride is already under way. So the answer is worked out
from what we just did — the files we changed report whether the selection
covered all of their changes, and the ones it didn't touch are as the model
describes them.
Co-authored-by: Claude Opus 5 (1M context) <noreply@anthropic.com>
Configured to always split the diff, a pane is shown whether or not its side
of the file holds anything, so emptying the side the focus is on no longer
takes the pane away — but it does take away everything there was to do there,
which is the question the focus is really asking.
So the render says which of the panes it is giving something to act on,
rather than the focus reading that off which panes are shown.
Co-authored-by: Claude Opus 5 (1M context) <noreply@anthropic.com>
Nothing has read that since the paint started settling the scroll position
before consulting the restore: what the answer was for was deciding whether
the reset the new content was owed still had to happen, and by then it has.
Co-authored-by: Claude Opus 5 (1M context) <noreply@anthropic.com>
Where the selection starts out, and how it widens to a whole change block,
are questions about what the view is showing — the same rendered diff the
queries next door read. Nothing about them belongs to a keybinding, and the
render funnel is about to need them too, from a layer that can reach a helper
but not a controller.
Co-authored-by: Claude Opus 5 (1M context) <noreply@anthropic.com>
Staging takes the lines it acted on out of the diff, so the selection has
nothing to sit on afterwards and would be left wherever those lines used to
be. What the user wants is the change that moved up into their place, so
that pressing the key again goes on to the next one — which is how staging
line by line through a file works.
The line acted on is gone, so it can't be remembered by identity the way a
re-render of the same diff remembers one; what is remembered instead is its
place in the sequence of the diff's changes, which the change after it
inherits. Staging the last change is the one case with nothing to inherit
it, and there the selection stays on the last change there is.
Co-authored-by: Claude Opus 5 (1M context) <noreply@anthropic.com>
Putting a view back on a remembered line as it re-renders is two things: the
plumbing that watches the content arrive, reveals it at the right moment and
places the view, and the search that says which row to land on. Only the
second is specific to what is being remembered, and a second kind of it is
about to arrive — the change line an action leaves the selection on, which
is found by counting rather than by identity.
Behaviour-preserving.
Co-authored-by: Claude Opus 5 (1M context) <noreply@anthropic.com>
The diff of a deleted file is its content going away, so putting every
line of it into the index leaves an empty file there (modified in the
index, deleted in the working tree) rather than the deletion the user
selected. The reverse case matches: the diff of an added file is its
whole content, and taking all of it back out of the index leaves the file
tracked and empty rather than untracked again. In the staging view you
had to enter such a file deliberately to reach these cases, but stepping
through a directory's diff hunk by hunk runs into them routinely.
Selecting every change of a file says "this file", so stage or unstage
the file itself. This applies to any file, since applying a file's whole
diff amounts to the same thing everywhere else.
Co-authored-by: Claude Opus 5 (1M context) <noreply@anthropic.com>
Space in the focused main view now acts on the selected lines the way it
does in the staging view: over the working tree's unstaged changes it puts
them into the index, and over the staged ones it takes them back out. Which
of the two it does is a property of the pane, each side of the diff having
one of its own. Nothing has to be entered first, and a selection reaching
across several files of a directory's diff is applied as one patch per file.
The rows on screen are only a picture of the diff, so the patch is built
from the diff itself: each selected row's identity — which file, which line
of it, and whether it is a deletion — is looked for in the file's own diff,
and the lines that match are the ones the patch includes. Matching by
position rather than by counting rows is what tells the two halves of a
modified line apart, since the deletion and the addition replacing it sit at
the same place in the new file.
Panels other than the working tree offer no action on their diff yet, so
space says nothing and does nothing there.
Co-authored-by: Claude Opus 5 (1M context) <noreply@anthropic.com>
The main view shows a diff renderer's picture of a diff, and that is not
what you want on your clipboard: a renderer may drop the +/- column, move
the line numbers into a gutter, group a hunk's deletions before its
additions, or leave lines out altogether. So copying takes the lines from
the diff itself, locating them by the identity of the selected rows.
Only the panel that produced the diff can produce it again, though: the
working tree's staged or unstaged side, a commit's, a stash entry's. The
new seam is there for that. It asks per file, so that copying three lines
of a commit's diff doesn't fetch the whole of it, and it will grow the
actions on a selection as staging and patch building arrive.
The clipboard gets the run of diff lines from the first selected line of
a file to the last, so that lines the renderer hid come along and the
result still reads as a diff. Headers count as selected lines too. A hunk
header names the first line of its hunk, so it is looked for the way a
line of the file is. A file header names no line at all, and a rendering
may draw it over any number of rows, so a selection touching one of them
takes the whole header.
As in the patch explorers, a selection that is all additions or all
deletions loses its +/- column, ready to be pasted into code. One that
reaches into a header keeps the columns, and what comes out is a patch
fragment rather than lines of code.
Co-authored-by: Claude Opus 5 (1M context) <noreply@anthropic.com>
Which pane a side of a file's diff appeared in depended on what else the file
had: the staged side had the lower pane while there were unstaged changes
above it, and took over the upper one when there weren't. So the same content
moved about, and which side a pane was showing was something the code had to
work out from the file's status rather than knowing from the pane.
Now each side has a pane of its own — unstaged above, staged below — shown
when there is something on it. A file with nothing unstaged shows its staged
changes in the lower pane alone, which then has the whole space, including
the label of the key that focuses it.
Nothing about this is visible to the user: the same diff appears in the same
place, with the same title and the same label, and the same keys focus and
scroll it. What it is for is the code, which no longer has to ask the file
what a pane is showing — and, once the diff can be staged from, no longer has
to make one key mean opposite things in the same pane.
Co-authored-by: Claude Opus 5 (1M context) <noreply@anthropic.com>
The main section shows one pane or two, which was enough while the second
pane only ever accompanied the first. It is about to have to show the second
one by itself: the working tree's staged changes are moving there for good,
and a file with nothing but staged changes has only that side to show — it
should have the whole section rather than sit under an empty pane.
So which panes are shown becomes a three-way answer, derived from which of
them the render has content for.
Behaviour-preserving: nothing renders into the secondary pane alone yet.
Co-authored-by: Claude Opus 5 (1M context) <noreply@anthropic.com>
A range or hunk selection covers a stretch of the diff, and restoring only
the cursor left the other end pointing at whatever line the new rendering
happened to put there — with more context lines above, a selected hunk
would grow a tail of context it never covered.
So the other end is remembered by identity too, and put back before the
cursor. If it is a line the re-render dropped, the selection is left as the
single line we landed on: there is no telling which line inherits a
selection's edge, and a wrong guess acts on lines the user never chose.
Co-authored-by: Claude Opus 5 (1M context) <noreply@anthropic.com>
Prep: pull the index out of the candidate search, so that looking up a
single diff line doesn't have to phrase itself as a search for the nearest
survivor among one candidate.
Co-authored-by: Claude Opus 5 (1M context) <noreply@anthropic.com>
Ignoring whitespace is how you ask whether what you are looking at is more
than reindentation, so being dropped at the top of the diff is a poor
answer: you have to find your way back to the change you were asking about
to see what became of it.
Unlike the other ways of re-rendering a diff, this one can take the line
you were on away for good, along with the hunk or even the file it was in.
When it does, the view lands on the nearest line the diff kept, wherever in
it that is — the walk of fallbacks doesn't stop at the file's edge, since a
file of nothing but reindentation leaves nothing nearer to land on. And
when ignoring whitespace empties the diff altogether, there is nothing to
keep and the view simply shows what is left.
A whitespace-only change that shares a hunk with a real one is a happier
case: it is shown as a context line rather than as a change, but it is
still the same line of the same file, so we stay on it.
Co-authored-by: Claude Opus 5 (1M context) <noreply@anthropic.com>
