Commit Graph
837 Commits
Author SHA1 Message Date
Stefan HallerandGitHub Copilot 741561fa7d Move whole-patch destination tests onto the commit diff
Moving a complete patch must preserve each file operation whether its
destination is a new commit before or after the source, or an existing
commit earlier or later in history. Build those patches as ranges over
the focused diff so the coverage survives removal of directory toggling
in the patch builder.

Co-Authored-By: GitHub Copilot <copilot@github.com>
2026-10-05 11:20:32 +02:00
Stefan HallerandGitHub Copilot 4e76919866 Keep patch-move conflict coverage on the focused diff
Conflict and dirty-worktree handling happen after a custom patch is
built, but their tests must no longer rely on either explorer to build
it. Select whole and partial patches in the commit diff while preserving
the rebase-conflict and stash-restoration assertions.

Co-Authored-By: GitHub Copilot <copilot@github.com>
2026-10-05 11:20:32 +02:00
Stefan HallerandGitHub Copilot 460f606be1 Move index-operation edge cases onto the focused diff
Patch movement still needs coverage for partial modifications, adjacent
additions, custom diff settings, and selections spanning files after the
patch-building panel goes away. Drive each through diff-line identities
while keeping the resulting commit and index assertions unchanged.

Co-Authored-By: GitHub Copilot <copilot@github.com>
2026-10-05 11:20:32 +02:00
Stefan HallerandGitHub Copilot bb7d771ded Preserve whole-file operations for added and deleted files
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>
2026-10-05 11:20:32 +02:00
Stefan HallerandGitHub Copilot 6b30b3941d Expose the missing whole-file semantics in the focused diff
The patch-building panel could move an added file as a file, while
selecting every visible change through the focused diff currently moves
only its content and leaves the empty file behind. Keep the intended
index state beside the current one so the replacement flow demonstrates
that gap before it is fixed.

Co-Authored-By: GitHub Copilot <copilot@github.com>
2026-10-05 11:20:32 +02:00
Stefan HallerandGitHub Copilot bdbdd4286e Exercise patch-move selection recovery through the diff
The commit rewrite triggered by moving a custom patch must keep the
user's place without relying on the patch-building panel. Build the
patch and leave the affected range selected in the focused diff so the
regression test follows the UI that survives this branch.

Co-Authored-By: GitHub Copilot <copilot@github.com>
2026-10-05 11:20:32 +02:00
Stefan HallerandGitHub Copilot 935f863930 Keep whole-file discard coverage on the surviving diff view
Removing the staging panel must not lose the handoff that happens when a
file's final change disappears. Drive that behavior through the focused
main view so the test continues to require focus and selection to follow
the files panel onto the next diff.

Co-Authored-By: GitHub Copilot <copilot@github.com>
2026-10-05 11:20:32 +02:00
Stefan HallerandGitHub Copilot de1129c398 Let focused diff tests own shared staging behavior
Keeping the same staging interactions covered through the explorer would
pin the suite to the panel that this branch removes. The focused main
view now owns line, range, hunk, navigation, search, context-size, and
rapid-input coverage.

Co-Authored-By: GitHub Copilot <copilot@github.com>
2026-10-05 11:20:32 +02:00
Stefan HallerandClaude Opus 5 352783ca1a Take lines back out of the custom patch from the pane showing it
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>
2026-10-05 11:20:32 +02:00
Stefan HallerandClaude Opus 5 c593e9e756 Materialize the custom patch so the diff renderer can show it
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>
2026-10-05 11:20:32 +02:00
Stefan HallerandClaude Opus 5 82f5496aa0 Mark the lines of a commit's diff that are in the custom patch
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>
2026-10-05 11:20:32 +02:00
Stefan HallerandClaude Opus 5 ae58e9233f Build a custom patch from a commit's diff, and discard lines from it
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>
2026-10-05 11:20:32 +02:00
Stefan HallerandClaude Opus 5 aa4fd12c3d Keep the diff selection when a commit is rewritten under it
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>
2026-10-05 11:20:32 +02:00
Stefan HallerandClaude Opus 5 11671fd86e Edit the selected hunk from the focused main view
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>
2026-10-05 11:20:31 +02:00
Stefan HallerandClaude Opus 5 603e254ec4 Hold input back until the selection has moved on
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>
2026-10-05 11:20:31 +02:00
Stefan HallerandClaude Opus 5 308e696fc7 Cover the cases where the next change isn't the obvious one
Three cases where landing on the change that took the place of the one acted
on is not the same as landing on the next line, or on the same line number:
staging an inserted line moves every later line of the file, so the hunk
below it is somewhere else afterwards; consecutive deletions all sit at the
same place in the new file, so nothing but their order tells them apart; and
unstaging half of a modification carries on in the pane the staged side has,
which is where the work was already.

Co-authored-by: Claude Opus 5 (1M context) <noreply@anthropic.com>
2026-10-05 11:20:31 +02:00
Stefan HallerandClaude Opus 5 b967d02616 Show a selection only over the diff the panel offers
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>
2026-10-05 11:20:31 +02:00
Stefan HallerandClaude Opus 5 e85c0cb419 Show git's own diff when the renderer's can't be acted on
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>
2026-10-05 11:20:31 +02:00
Stefan HallerandClaude Opus 5 ae538a8583 Commit and find a fixup base from the focused main view
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>
2026-10-05 11:20:31 +02:00
Stefan HallerandClaude Opus 5 0cb1345393 Discard the selected diff lines from the focused main view
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>
2026-10-05 11:20:31 +02:00
Stefan HallerandClaude Opus 5 71cc0680f1 Carry the acted-on lines into the pane the work lands in
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>
2026-10-05 11:20:31 +02:00
Stefan HallerandClaude Opus 5 0baa1ec8d0 Leave a pane that only the permanent split keeps around
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>
2026-10-05 11:20:31 +02:00
Stefan HallerandClaude Opus 5 7d327339af Follow the focus into the pane that is left
Each side of a file's diff has a pane of its own, and a pane is only shown
while its side has something in it. So anything that empties the side the
focus is on takes that pane away with it: committing what was staged, or a
commit or a discard happening outside lazygit and arriving with a refresh.
The focus was left on a pane that isn't there any more, where the next
keypress acted on nothing.

The render is what decides which panes are shown, so the question is asked
there, of every render rather than of the handful of actions that could think
to ask it themselves. The pane the focus moves into gets its selection once
that render has finished and there is something to put one on, the way
focusing it by hand would — and shows none until then, so that the selection
it was left with the last time it was used doesn't appear for a frame.

Co-authored-by: Claude Opus 5 (1M context) <noreply@anthropic.com>
2026-10-05 11:20:31 +02:00
Stefan HallerandClaude Opus 5 8dddf9f429 Carry the selection to the next change after staging
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>
2026-10-05 11:20:31 +02:00
Stefan HallerandClaude Opus 5 9132730229 Act on a whole file's changes as acting on the file
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>
2026-10-05 11:20:31 +02:00
Stefan HallerandClaude Opus 5 1169cde157 Stage and unstage diff lines from the focused main view
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>
2026-10-05 11:20:31 +02:00
Stefan HallerandClaude Opus 5 5d1489bc92 Copy the selected diff lines from the focused main view
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>
2026-10-05 11:01:24 +02:00
Stefan HallerandClaude Opus 5 941f01af58 Always show a file's staged changes in the lower pane
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>
2026-10-05 10:50:48 +02:00
Stefan HallerandClaude Opus 5 06e8cb85f9 Let an emptied main pane forget what it was showing
A pane that has been emptied is showing nothing, but it kept the scroll
position it was left at and went on claiming the render it used to show,
so the next render into it — the same command's output, the file it was
showing being selected again — counted as content the view already had,
and was revealed partway down.

So say what the empty pane is: at the top, and showing nothing that a
render can be a re-render of.

Co-authored-by: Claude Opus 5 (1M context) <noreply@anthropic.com>
2026-10-05 10:50:48 +02:00
Stefan HallerandClaude Opus 5 e2f0172cb6 Add a test for a main pane coming back after being emptied
A pane the render has nothing to show is emptied, but keeps the scroll
position it was left at and its claim to the render it was showing. So
when it comes back — the file it was showing before is selected again —
its content is rendered under the same command it already had, which is
taken for the content the view is showing, and the user is left partway
down a diff they have only just been given.

Co-authored-by: Claude Opus 5 (1M context) <noreply@anthropic.com>
2026-10-05 10:50:48 +02:00
Stefan HallerandClaude Opus 5 79e1ce256f Keep both ends of a selected range across a re-render
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>
2026-10-05 10:30:55 +02:00
Stefan HallerandClaude Opus 5 1a9a8e5203 Keep your place in the diff when ignoring whitespace
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>
2026-10-05 10:30:55 +02:00
Stefan HallerandClaude Opus 5 f1f5479d47 Keep your place in the diff when switching diff renderers
Cycling through the diff renderers is for comparing how they show the same
change, which is hard to do from the top of the diff each time. The line
you were on is the same line of the same file whichever renderer draws it,
so the restore finds it again — by the records a renderer states, where it
speaks the protocol, and by parsing its output as a diff otherwise.

The restore sits in DiffHelper.RenderToMainAgain. A switch between a
dark and a light terminal background renders the diff again through the
same helper, so it keeps your place as well.

Co-authored-by: Claude Opus 5 (1M context) <noreply@anthropic.com>
2026-10-05 10:30:55 +02:00
Stefan HallerandClaude Opus 5 0eeb8adcbf Keep your place in the diff when changing the context size
Pressing { or } re-rendered the diff with less or more context around each
change and dropped you back at the top of it, so finding your way back to
what you were reading was on you.

Remember where the view is before triggering the re-render, and have the
restore put it back there. The line to remember is the selected one when a
selection is showing, and the middle visible line otherwise — what you are
looking at, rather than the view's top edge. It is remembered by identity,
because the new rendering puts it on a different line of the view, and it
is found again by the records a diff renderer states for its rows, or by
parsing the rendering as a diff where it still looks like one.

The line may not be there at all afterwards: shrinking the context takes
context lines away. So the lines around it come along as fallbacks, nearest
first, and the view lands on the nearest one that survived, put back on the
screen row it was on — leaving what you were reading where it was, give or
take the line that went. The walk that collects them covers the whole diff
rather than stopping at the nearest change on either side: those always
survive a context-size change, but not everything a re-render can do to a
diff is that considerate.

Under a diff renderer that says nothing about its rows there is nothing to
look for at all, and the view is left at the offset it had instead: often not
the line it was on, but always closer to it than the top of the diff. That is
what the re-render asks for besides the restore, since it is a different
command from the one that produced what is on screen and would otherwise be
taken for a diff the user has never seen.

Co-authored-by: Claude Opus 5 (1M context) <noreply@anthropic.com>
2026-10-05 10:30:55 +02:00
Stefan HallerandClaude Opus 5 8e9f8f89f3 Follow the selection with the search in the focused main view
Search the diff, then move the selection with the arrow keys, and
pressing "n" goes to the match after the one the search was last on
rather than to the one after the selection. So walking through the diff
and then picking up the search where you got to takes as many presses as
there are matches behind you.

List views and the staging view keep the current match in step with their
selection; do the same here.

Co-authored-by: Claude Opus 5 (1M context) <noreply@anthropic.com>
2026-10-05 10:03:31 +02:00
Stefan HallerandClaude Opus 5 99a52ef604 Edit the selected line of a diff from the focused main view
Reading a diff is often how you notice something to fix, and the file and
line are right there in front of you — so pressing edit opens the file at
the line under the selection, as it does in the staging view.

The line number the diff shows is the line number in the version the diff
is of, which for a commit's diff is not where that line sits today, so it
is carried forward the same way clicking a diff-renderer hyperlink already
does. A file header names no line, so it just opens the file.

Co-authored-by: Claude Opus 5 (1M context) <noreply@anthropic.com>
2026-10-05 10:03:31 +02:00
Stefan HallerandClaude Opus 5 440e507888 Jump by hunk and by file in the focused main view
Reading a diff of any size means moving in bigger steps than a line at a
time, which the staging view offers and the main view didn't. So the same
hunk keys work here, and n / N step from file to file — worth having only
here, since a diff spanning several files is something the staging view
never showed.

Where "the next file" begins isn't in the text: a diff renderer may print
whatever it likes above a file's content. So navigation lands on the first
row that states which file it belongs to, which is the file's header when
the source says so and its first content line otherwise. The anchor's own
file is found by scanning down rather than to the nearest row either way —
having just landed on a header, the nearest row above belongs to the file
we came from, and taking it would send the next press back where we
started.

A file you go to is brought to the top of the view, since the file is what
you went there for and the more of it is on screen the better. That only
applies where the view has to scroll at all: a file already on screen
leaves it where it is. In hunk mode what ends up selected is the file's
first change rather than the row the file begins at, and a large context
size can put that change further down than a screenful; the selection is
scrolled into view afterwards as any other jump's is, and the alignment
gives way where the two can't both hold.

The diff loads lazily, so a target below the loaded portion isn't there to
be found; rather than doing nothing, we read the rest in and look again.

Co-authored-by: Claude Opus 5 (1M context) <noreply@anthropic.com>
2026-10-05 10:03:31 +02:00
Stefan HallerandClaude Opus 5 002ac12665 Select a range of diff lines by dragging
Selecting a range with the mouse is the obvious gesture once clicking
selects a line, and it's the only way to get a range without knowing the
keybindings.

The range has to be anchored where the mouse went down, which the view
can't tell us: a click in hunk mode selects a whole block, leaving the
view's own range anchor at the block's far end, so a drag from there would
grow the selection from the wrong end. So the clicked line is remembered
when the click happens, and the drag anchors there.

A drag that reaches the edge of the view keeps scrolling, using the same
autoscroller the staging view does — mouse capture means the pointer can be
dragged past the edge, and there is more diff down there than fits on
screen. Unlike the staging view, whose content is a string that is always
there in full, this diff loads lazily, so scrolling down has to keep
reading it in or the autoscroll would stop at the loaded edge.

Co-authored-by: Claude Opus 5 (1M context) <noreply@anthropic.com>
2026-10-05 10:03:31 +02:00
Stefan HallerandClaude Opus 5 42df7ef093 Select a whole change block when focusing the main view in hunk mode
Users who set hunk mode as their default get it when entering the staging
view, and the focused main view is on its way to replacing that view, so it
has to behave the same: focusing selects a whole change block, and clicking
a change line selects that line's block, ready to act on. A click on a
context line still selects only that line, since the click points at it
precisely — you may well want to edit it. A click inside the block that is
already selected does the same, giving hunk mode up and going back to line
by line. That keeps a single line reachable with the mouse in a block too
long to see the end of, and matches how a click inside a range selection
already collapses it.

The block offered up is the first one that begins on screen, so that its
whole extent can be seen before acting on it. Only when none does — a change
too long to fit on the screen — is the block that reaches into the view from
above taken instead, and the selection then extends to its first line off
screen: focusing a diff must not move it, so nothing here scrolls.

The staging view makes one exception, and so must we, or a file that is one
solid block of changes (a file you just created, or deleted) would come up
with all of it selected. The staging view asks the parsed patch; we ask the
rendered diff the same question, which needs no second git invocation and
works over a whole commit's diff, where the answer differs per file.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
2026-10-05 10:03:31 +02:00
Stefan HallerandClaude Opus 5 81851dcbbf Show a selection in the focused main view
The focused main view could be scrolled but not pointed at: there was no
way to say "this line" or "these lines", which is what every line-level
interaction needs — editing a line, copying part of a diff, and, later,
staging. So a diff main view now always carries a selection while focused,
starting at the first change already on screen so that focusing doesn't
move the view.

The mode of the selection lives on the main context (a single line, a
range from a fixed anchor, or the change block around the cursor); the
selected line and the range anchor stay in the view itself, whose native
range select draws them, so there is no new highlight machinery. The modes
and their keys are the ones the staging view has, including that the arrow
keys step from block to block in hunk mode.

A pane holds something to select only when what it is showing is a diff
with changes in it, which the render works out once its content is final: a
placeholder message is not a diff, and neither is a diff with nothing in it
at all, such as a binary file's or an empty commit's. Whether a selection
is then drawn there follows from the context stack, as it does for every
other view.

A click in the focused main view now has a meaning again: it selects the
line it points at.

Co-authored-by: Claude Opus 5 (1M context) <noreply@anthropic.com>
2026-10-05 10:03:31 +02:00
Stefan HallerandClaude Opus 5 3af5e7940c Ask diff renderers for OSC 1717 metadata
A renderer that speaks the protocol emits nothing unless it is asked to,
so that its output stays plain wherever it is used outside lazygit. The
variable names the versions we understand.

git is one of the renderers we ask. It has no pager to spawn, and so no
terminal to spawn one in, but it still renders the diff itself — for the
word-diff formats, whose markup nothing else could resolve — so the
request has to be made before we decide a pty isn't needed.

Co-authored-by: Claude Opus 5 (1M context) <noreply@anthropic.com>
2026-10-05 09:54:56 +02:00
Stefan HallerandClaude Opus 5.5 0afb94e97b Lay git's own diff out to the width the layout gives the view
Changing the screen mode renders the main view again, and so does
anything else that changes its size along with what it shows. With git's
own diff, that render laid a commit's diffstat out to the width the view
had before. The graph then wrapped onto rows of its own in a view that
got narrower, and stopped short in one that got wider.

A diff renderer's render is created after the layout pass, since only
the layout settles the view's size, and takes its width there. git's own
diff took its width straight away instead, when the render was asked
for. Create its task after the layout as well.

Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
2026-10-01 16:50:48 +02:00
Stefan HallerandClaude Opus 5.5 6b38e8fcde Demonstrate that git's diffstat keeps the width from before a screen mode change
Pressing + in the commits panel moves to half-screen mode and renders
the commit's diff again in the narrower main view. With git's own diff,
the diffstat graph comes out as wide as the view was before, and wraps
onto rows of its own.

ContainsViewLines asserts on the rows the view draws, after wrapping.
The existing line assertions see the lines of the content and can't tell
a wrapped line from one that fits.

Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
2026-10-01 16:42:10 +02:00
Stefan HallerandClaude Opus 5.5 09b53e9a85 Allow pushing a range selection of tags
Tags can only be pushed one at a time. Let the push command of the tags
panel work on a range selection of tags too. It asks for one remote and
pushes all selected tags to it with a single git command.

Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
2026-09-27 11:19:25 +02:00
Stefan HallerandClaude Opus 5.5 1b4757be89 Allow deleting a range selection of tags
Tags can only be deleted one at a time. If many of them have piled up,
for example backup tags made before rewriting a branch, deleting them
takes a lot of keypresses.

Let the delete menu work on a range selection of tags. It deletes the
selected tags with one git command for the local tags and one for the
remote tags, and asks for a single remote for all of them. After
deleting local tags, collapse the range selection to its first line;
otherwise it would select the tags that moved up into the place of the
deleted ones.

Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
2026-09-27 11:19:25 +02:00
Stefan HallerandClaude Opus 5.5 26ad23a8d2 Offer to update the branches stacked below the current one when pulling
When somebody else rebases a stack and force-pushes it, pulling the
topmost branch leaves the branches below it diverged. They can be
updated with `f`, but pushing the stack offers to push the branches
below along with the current one, and pulling should be symmetric.

When pulling, find the branches stacked below the current one that can
be updated without losing anything. These are those that are behind
their upstream branches, and those that diverged from them only because
they were rewritten. If there are any, show a menu that lists them and
offers to update them in addition to pulling the current branch, or to
pull only the current branch. The current branch is pulled as before.

The decision is based on the last fetch, not on a new one, so that the
menu appears right away. If the remote has changed since then, a branch
might not be offered although it could be updated; it then shows as
diverged after the pull, and pulling again offers it. The update itself
fetches the upstream branches and checks them again, so it never loses
commits.

Branches that are checked out in another worktree are not offered,
since updating them would change the files there.

The branches below are updated before the current branch is pulled. If
one of them pointed into the commits that a rebasing pull rebases, the
pull would move it when rebase.updateRefs is set, and updating it
afterwards would fail. If updating them fails, the current branch isn't
pulled.

Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
2026-09-27 11:13:15 +02:00
Stefan HallerandClaude Opus 5.5 0a99f65be3 Auto-forward branches that are checked out in other worktrees
If a main branch is checked out in another worktree, auto-forwarding
after a fetch skips it. People who keep the main branch checked out in
their main worktree, and work on feature branches in linked worktrees,
therefore never get it forwarded.

Fast-forward such a branch in the worktree it is checked out in, as `f`
does. Skip the worktree if it has changes to tracked files, since
nobody asked for its files to change. Also skip it if it is mid-rebase
or mid-bisect, because its HEAD is then detached from the branch. A
branch in the current worktree is never forwarded. This covers the case
of the current worktree being mid-rebase on a main branch, whose ref
would otherwise be forwarded under the rebase.

Auto-forwarding now writes the same reflog message as `f`
("lazygit: update to upstream branch").

Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
2026-09-27 11:05:47 +02:00
Stefan HallerandClaude Opus 5.5 1b4fc02040 Keep fast-forwarding the other branches when one of them fails
If `f` is used on several branches that are checked out in other
worktrees, the first worktree in which the fast-forward fails stops the
whole operation. For example, an untracked file that the fast-forward
would overwrite leaves the branches after it untouched, even though
nothing is wrong with them.

Try all the branches, and report the errors of the failed ones
together. The checks that refuse to fast-forward any of the branches
still run before anything is moved.

The next commit uses forwardBranches for auto-forwarding branches in
other worktrees, where stopping at the first failure is worse. A
worktree that fails every time would prevent the ones after it from
ever being forwarded. For this, forwardBranches also takes the git
commands to use, since a background worker doesn't block switching
repos.

Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
2026-09-27 11:05:47 +02:00
Stefan HallerandClaude Opus 5.5 ef00e18247 Refuse to fast-forward a branch being rebased or bisected in a worktree
The worktree loader associates a worktree that is mid-rebase or
mid-bisect with the branch involved, even though its HEAD is detached.
Fast-forwarding such a branch therefore ran the fast-forward in that
worktree. This moved the detached HEAD and put the upstream commits
into the rebase in progress, while the branch stayed where it was.

Remember in the worktree model when its branch comes from a rebase or
bisect, and refuse to fast-forward the branch in that case. Updating
only the ref is no option for a rebase; the rebase writes the branch
when it finishes.

Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
2026-09-27 11:00:36 +02:00
Stefan HallerandClaude Opus 5.5 5990946a23 Add a test for fast-forwarding a branch being rebased in a worktree
If a branch is being rebased in a worktree, pressing `f` on it moves
the detached HEAD of that worktree instead of the branch. The upstream
commits end up in the rebase in progress, and the branch itself stays
where it was. The same happens for a branch being bisected.

Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
2026-09-27 11:00:36 +02:00