The spec regained file-header (f) and hunk-header (h) records: f never
carries a line number, h always does (the first line of the hunk it
heads). Accept them in the OSC metadata backend, so a conforming pager's
header rows resolve to the same DiffLineFileHeader/DiffLineHunkHeader
identities the buffer parser already reports for raw diffs.
With header rows located, next/previous file navigation and the
jump-to-file menu land on a file's header row, and header rows become
usable scroll-restore anchors. The consumers need a few adjustments:
- File navigation used to reach a file's top by backing up over the
untagged rows above its first located row. With tagged headers that
overshoots onto the blank separator row above the file header, so drop
the back-up (backUpOverHeader) and land on the first located row
itself: the header for any conforming source, or the first content
line under a pager that leaves its headers untagged — an accepted
degradation for non-conforming pagers, now that the spec makes f/h
mandatory.
- SamePatchLine now requires headers to match headers of the same kind.
A hunk header shares its line number with the hunk's first content
line (and a file header shares "0" with a deleted file's hunk header),
so without this a position restore aiming at one could land on the
other. This also applied to raw diffs before, but headers used to be
unlikely restore targets; now that navigation deliberately lands on
them, the ambiguity would bite.
- Editing a file-header row opens the file without jumping to a line,
like pressing edit on a whole file in a side panel. (It used to open
at line 1 for raw diffs, where headers resolved already.)
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
n / N step through the files of a multi-file diff one at a time, which
is tedious when the diff spans many files. Add `f`, which pops up a menu
listing every file in the diff — in the order they appear, as
repo-relative paths — so you can jump straight to one.
Picking a file reuses the exact landing logic n / N use (navigate to the
file's first row), computed from the same backUpOverHeader machinery
AdjacentFile uses, so the menu and the step keys agree on where each
file begins and land identically.
The menu title and the keybinding description are hard-coded English for
now; this is a prototype.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
The focused main view now plays the role the staging panel used to,
so the working-tree commands the staging panel offered — commit (and
its variants) and find-base-commit-for-fixup — need to be reachable
there as well.
Gate them to when the focused main view actually shows the working-tree
diff (DiffMainViewTypeStaging), which is exactly the role the staging
panel filled. Over a commit's or stash's diff these commands would
operate on the working tree, unrelated to what's on screen, so the keys
are a no-op there and the bindings don't clutter its keybinding menu.
The gate is re-checked on each press rather than captured at
registration time, since one keybinding set serves the main view over
every panel. That requires reading the panel beneath the main view from
GetKeybindings (to decide whether to show the descriptions), which runs
for off-stack contexts too — at startup and during cheatsheet
generation — so a panic-safe IsInStack guards the NextInStack lookup.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Pager authors reviewing the protocol asked to drop the EMIT_ prefix: the
OSC number already names the protocol, so EMIT_ was redundant. Rename the
handshake variable to OSC1717_METADATA in the spec and in the two places
lazygit advertises it (the pager PTY and the metadata probe).
The inclusion gutter (the ✓ markers on the commit diff showing which lines are
in the custom patch) is painted on the Normal pane but is an affordance of the
whole focused-main-view pair. It was gated on the Normal pane specifically being
current, so tabbing to the secondary (custom-patch) pane hid it — even though
both panes are visible and you're still building the patch.
Show it whenever either pane of the focused main view holds focus, finding the
side panel beneath whichever pane is current. GetOnFocusLost now re-evaluates the
gutter (rather than unconditionally hiding) so it persists across a pane switch
but still hides when focus leaves the pair; the new context is already current by
then, so it decides correctly and doesn't flicker.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Staging a hunk from the focused main view advances the selection to the next
hunk, because staging removes the acted-on lines from the diff so the preserved
change-line ordinal lands on the next change. Toggling a hunk into a custom
patch left the selection sitting on the just-toggled hunk instead — the toggle
doesn't change the diff (only the inclusion set), so the same ordinal lands back
where it was, and you had to navigate by hand to build a patch hunk by hunk.
Give the toggle the same feel by advancing the reveal ordinal past the toggled
change lines (RevealSelectionAfterStaging gains an advanceBy arg, fed the toggled
change-line count). Staging and removal still pass 0 (their lines are consumed).
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Use osCommand.GetTempDir() (lazygit's own per-session temp dir, which it
creates and cleans up) as the parent for the custom-patch diff trees, instead
of the OS default — so it honors the configured temp dir and is cleaned up with
the rest of lazygit's temp files.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
The secondary pane showed the custom patch with a bespoke in-memory render
(PatchBuilder.RenderAggregatedPatch / FormatView). That had two problems: it
could never be fed to a pager the way the main view's diff is (a stdin pager
might have worked, but an external diff tool like difftastic, which diffs two
files rather than a unified diff, could not), and its hand-rolled hunk/context
handling differed subtly from git's.
Materialize the patch instead as two real file trees under a temp dir — a/ holds
each patched file's "from"-side content, b/ that content with the patch applied —
and render it with `git diff --no-index`, reusing the exact pager wiring the main
view uses (stdin pager, external diff, or git's own colour as the raw fallback).
`--no-index` honors both GIT_PAGER and --ext-diff, so every pager type now renders
the custom patch like any other diff, and git computes the context, fixing the
quirks. Because the secondary is now an async diff task, the post-removal
selection reveal (which rides a task's restore) finally takes effect.
The trees are named a/b so that with --no-prefix the diff shows the real
repo-relative paths; added files are seeded empty in a/ so they pair up and show
their real paths rather than git's directory-comparison "added in b" form. The
patch builder owns the temp dir's lifetime (created on Start, removed on Reset)
and bumps a generation counter on every change, so the trees are rebuilt only
when the patch actually changes — covering the focused-main view and the old
explorer alike, without rebuilding on mere navigation.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
The focused-main-view rework made the secondary pane actionable, but the old
patch-building explorer's secondary was inert, so its actions were never thought
through. Pressing space there routed through the same toggle handler as the main
pane, resolving the selection against the secondary's diff and mapping it to
patch-builder indices by line number. But the secondary shows the *aggregated*
custom patch, which renumbers included additions whenever an earlier addition in
the same hunk is excluded (Transform recomputes each hunk's +start). So the
shifted number resolved to the wrong line in the original diff — often adding an
unrelated line instead of removing the selected one.
Resolve the secondary selection by its *ordinal* among the change lines shown
instead: the custom-patch view renders exactly the included change lines in
order, so the k-th change line of a file is that file's k-th included change line
(PatchBuilder.IncludedChangeLineIndices), independent of the renumbering. Space
in the secondary now only ever removes, mirroring how space in the staging view's
staged pane unstages.
Discarding from the commit (the remove key) makes no sense in the custom-patch
preview — it would act on lines shown only as the patch, and space already
removes them — so it's disabled there.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Discarding lines from a commit via the focused main view installed its own
revealSelectionAfterPrimaryAction before the rebase. That rebase rewrites
the commit, so the selection-preserve net now re-establishes the selection
as the diff re-renders — with the same anchor (the selection's first line),
making this install redundant. Files-discard keeps its own reveal: its diff
command is stable, so the net never fires there, and it has staging's
focus-follow to the secondary pane besides.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Dropping a hunk with `d` re-establishes the focused main view's selection
on the next surviving change, which feels great. But other operations that
rewrite the commit under the focused main view — moving a custom patch out
into the index, undoing right after a discard or a patch move — don't run
through the focused-main-view action handlers, so nothing was preserving
the selection. The stale gocui selection was left painted over the new
content, often as a large, now-meaningless range.
Rather than teach every such command to capture and restore the selection
(move-patch, undo, redo, and any future one), the focused main view now
preserves it itself, by its change-line ordinal, as the diff re-renders —
the command-agnostic counterpart of revealSelectionAfterPrimaryAction. The
diff side panels call it from their render-to-main before triggering the
render, so the restore rides the re-render.
It stands down unless the focused main view is current and shows a
selection, no precise restore is already pending (escape / post-stage
reveal / context-size place the selection more precisely), and the diff
command is actually changing. That last gate matters: a plain background
refresh re-renders the same commit's diff unchanged, and there the
selection — range and all — must be left alone; only a command change
(e.g. a rebase rewriting the commit's hash) means the content moved.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Click-and-drag in the focused main view turns a hunk selection into a range,
but it was anchored at the change block's far end — where selecting a hunk
leaves the range anchor — rather than the clicked line. And on a context
line, where the click leaves no range anchor at all, dragging just moved the
single selected line instead of opening a range. Remember the line each
mouse-down lands on (the click can show a whole hunk, so it can't be read
back from the view) and, as the drag proceeds, anchor the range there while
the cursor end follows the mouse as gocui already moves it. Works for a click
that focuses the view and for one while it's already focused, on change and
context lines alike.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
When the diff re-renders for a new pager (or a changed context size),
PreserveDiffPositionOnRerender restored the cursor by patch identity but left
the selection's other end — the range anchor — pinned to its old view line. A
pager that restructures the diff (delta side-by-side is the clearest case)
then left the selection spanning the wrong range of patch lines. Remember the
far end by patch identity too and put it back the same way, so the selection
covers the same lines however the new pager lays them out. One mechanism now
restores both ends, covering hunk and range selections alike; a single-line
selection still needs only the cursor.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Clicking the staged/unstaged pane you weren't focused on selected a single
line the first time, even in hunk mode, because that pane's select mode was
still its default until it had been focused once (tabbing to it and back was
the workaround). Seed the clicked pane's mode from the one we're leaving so
the very first click there behaves like every later one.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Once in hunk mode, clicking another change line reset the selection to a
single line, so you had to press `a` again for each block you wanted to
stage (a behaviour the main view inherited from the staging and patch-
building panels). Preserve hunk mode across clicks instead: a click on a
change line re-selects that whole block, while a click on context — or any
click when we weren't in hunk mode — drops to a single line, where the click
points precisely (e.g. to edit it).
The two click handlers shared an identical selection body, so unify them
into one helper and make the change in a single place.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Focusing the main view by keyboard already selects a whole change block in
hunk mode; a click, though, only ever placed a single-line selection, so the
common "click the diff to stage this block" gesture still needed a follow-up
`a`. Now a click on a change line selects that line's block too. A click on
context still selects just that line, since the click points at it precisely
(e.g. to edit it with `e`).
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
A metadata-aware pager emits a version-only OSC 1717 record (no fields) as its
first output, to announce it speaks the diff-line-metadata protocol so lazygit
can probe for it. It isn't per-line metadata, so on a real render it must be
swallowed whole rather than lingering in the accumulator and attaching to the
following diff-header line (or, if newline-terminated, producing a phantom blank
line). Drop any OSC 1717 payload with no fields at its terminator; per-line
payloads always have fields, so they're kept.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Wire the remaining diff panels — local commits, sub-commits, commit files,
stash, and reflog — into the focused main view's raw-diff fallback, the same way
the files panel already is: each computes DiffMainViewShouldRenderRaw and renders
its diff raw (no pager) when focused under a pager whose output we can't resolve,
so its selection stays toggleable into a custom patch (or, for reflog, navigable
and copyable).
The commit-diff panels build their diff through the diff helper, which can't
reach the staging helper, so the panel computes renderRaw and passes it in.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Prep for extending the focused main view's raw-diff fallback beyond the files
panel. ShowCmdObj, ShowFileDiffCmdObj, ShowStashEntryCmdObj and DiffCmdObj gain
the ignoreExternalDiff arg WorktreeFileDiffCmdObj already has — forcing git's own
coloured diff regardless of a configured external diff command. All callers pass
false, so behaviour is unchanged.
Also lift the pty-vs-command task choice out of the files controller into
types.NewMainViewDiffTask(WithPrefix), so the commit/stash/patch-building panels
(whose diffs are built in the diff helper, which can't reach the staging helper)
can select the same raw-fallback task.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
The focused main view is the staging surface, so it has to resolve the diff it
shows to patch-space. A pager that restructures the diff without emitting our
metadata (stock delta-default, plain difftastic, `cat -n`) produces output the
buffer parser can't read, which would leave its diff unstageable.
When such a diff is focused, re-render it raw — git's own colour, no pager — the
same content a no-pager setup shows, which the buffer parser handles. Browsing
keeps the pretty pager output; only focusing to act switches to raw.
Whether the pager is usable is decided by probing it: run it on empty input and
look for the version-only OSC 1717 handshake a metadata-aware pager emits first.
This is a pager-level, content-independent fact (a binary file, which has no
change lines under any pager, can't mislead it) and it's known before we render,
so we never render pretty only to discover mid-flight that we should have rendered
raw. The verdict is cached per pager (reset when the pager changes). No PTY is
needed — git needs a terminal to decide to invoke a pager, but the pager emits the
handshake regardless. A git-config external diff driver (useExternalDiffGitConfig)
is chosen per file via .gitattributes and a single diff can mix drivers, so
there's no one pager to probe; it's treated as unsupported (always raw).
Bypassing the pager needs two things, since a pager reaches the diff by two
routes: an external diff command (suppressed in the cmd via the new
ignoreExternalDiff arg, keeping git's colour, unlike plain) and a stdin pager
(GIT_PAGER, applied by the pty task — so the raw render uses a plain command
task instead).
This wires the files panel; the commit/stash/patch-building panels follow.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
`ctrl+o` in the focused main view copies the selection to the clipboard,
mirroring the staging view's copy. Unlike stage / discard, copying is the same
for every diff panel — it just reads the text shown — so it's a direct
MainViewController command rather than a FocusedMainViewActions method. That
keeps it free of per-panel duplication and lets it work over panels that have
no actions, notably the reflog.
The +/- prefix handling is metadata-aware where it matters: with no pager the
main view shows the raw diff, so a homogeneous selection has its +/-/space
column stripped (dropDiffPrefix) to ease pasting into code. With a pager
configured the rendered lines carry no such column, so stripping a leading
character would eat real content — copy verbatim instead. (Refining the raw
case to classify header lines via the diff-line metadata, fixing the
'--- a/file' edge case noted in 159bbb0825, is left for later.)
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
The focused main view always showed a selection while it held focus, even when
its content was a placeholder ("No changed files", a merge-conflict message)
rather than a diff — so pressing a navigation key conjured a highlighted line
over "No changed files", and discarding the last change (or changes vanishing
outside lazygit) left a stale selection behind.
A selection should only show when there are change lines to act on. Two
moments establish or change the content:
- Focus: showInitialDiffSelection now leaves the selection off when the view
has no change lines (ViewHasChangeLines), rather than highlighting a stray
line at the top.
- Render: the side panel's render-to-main is where it decides between a diff
and a placeholder, so that's where the selection's visibility is set —
updateFocusedMainViewSelectionVisibility shows it only on the focused pane
and only when a diff is being rendered. This covers the refresh cases that
focus can't: discarding the last change, and changes disappearing or
reappearing outside lazygit, all hide or restore the selection on the next
refresh. (Focusing reuses the already-rendered content rather than
re-rendering, which is why focus needs its own check.)
Wired into the files panel, where placeholders occur; the commit panels always
render a diff. Adds a SelectionIsShown/SelectionIsHidden test assertion.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Wire the focused main view's `d` binding to a DiscardSelection action on the
side panel beneath, the discard counterpart of the primary action. As with
stage/toggle, what discard means is the panel's business:
- the files panel discards from the working tree, mirroring the staging
view's `d` — reverse-apply not cached on the unstaged side (destructive, so
confirmed), reverse-apply cached on the staged side (i.e. unstage);
- the commit panels (commit files, and the whole-commit diff of the local
commits / sub-commits / stash panels) remove the selected lines from the
commit via a rebase, mirroring the patch builder's "discard lines from
commit" — building a one-off patch from the selection and deleting it.
The commit-discard backend and its guard are shared free functions in
patch_building_from_main_view.go, paralleling the patch toggle. Discarding
from a commit is only possible on a local branch, so DiscardSelection grows a
disabled-reason companion on the FocusedMainViewActions interface: the `d`
binding is greyed with a reason on stash and other-branch sub-commits (never
rebaseable) and while a rebase is in progress, exactly as the patch builder
greys it. The files panel is always available (a zero-context diff is the one
error it reports inline, matching the staging view).
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
The focused main view's discard command (coming next) needs to read either
side's diff and apply a patch with an arbitrary direction and target: discard
from the working tree reads the unstaged diff but applies a reverse patch that
is not cached. stageDiffLines couldn't express that — it used a single reverse
flag both to pick which diff to read and to reverse the apply, and hardcoded
Cached: true.
The read side and the apply direction are independent (they coincide only for
staging and unstaging), so split them: applyDiffLines now takes sourceCached
(which diff to read) and a git_commands.ApplyPatchOpts (how to apply). Renamed
from stageDiffLines since it now covers stage, unstage, and discard. Staging
passes the same values as before, preserving behavior.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Each command a side panel handles in the focused main view needed its own
delegation channel: a HasKeybindings getter, an IBaseContext Add method, a
BaseContext field + getter, a baseController nil default, and an attach.go
registration — roughly five touch points per command. With three commands
(click, stage, toggle-patch) that was already a lot of boilerplate, and it
doesn't scale to the discard / copy commands coming next.
Replace the three channels with one: a side panel exposes a single
FocusedMainViewActions interface via GetFocusedMainViewActions (nil when its
diff offers no actions), and the controllers implement that interface
directly. The stage and toggle-patch handlers, already unified to a plain
error return, become one PrimaryAction method whose meaning is the panel's
business (stage for the files panel, patch toggle for the commit panels);
the click handler becomes OnClick. MainViewController is now a thin
dispatcher: fetch the actions from the panel beneath, call the method.
Adding a command is now one interface method, an implementation in the two
or three controllers, and a keybinding — no plumbing.
The toggle-patch channel did double duty as the "this panel builds a custom
patch" signal for the inclusion gutter (shown only beneath a patch-building
panel, not the staging files panel). Collapsing the channels removes that
proxy, so make the classification explicit on DiffMainViewContext, whose
marker method now returns a DiffMainViewType (none / staging / patch-building)
instead of being a bare marker. The gutter shows only beneath a panel whose
type is patch-building (commit files, local commits, sub-commits, stash).
Behavior-preserving.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
The focused main view's space binding delegates to the side panel beneath
it, but the two handlers were asymmetric: the patch-toggle handler did its
own re-render and re-established the selection itself, while the staging
handler returned a focusViewName so the dispatcher (stageRange) could do the
reveal-and-focus dance on its behalf. That split blocks collapsing the
per-command handler channels into one, since the two have different return
types.
Make staging match the toggle: GetOnStageFocusedMainView returns plain
error, and the FilesController handler does the post-staging reveal and pane
focus itself. The reveal/select-mode logic the two handlers shared (collapse
a range to a line, preserve the change-line ordinal across the re-render,
re-expand a hunk) is extracted into revealSelectionAfterPrimaryAction, with
mainContextForViewName resolving a main view name to its context. The
dispatcher is now uniform: read the selected range, hand it to whichever
handler the panel registered.
Behavior-preserving.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Until now space toggled lines into a custom patch only from the commit files
main view (the per-file diff). Register the same toggle handler on the commits,
sub-commits and stash panels, so a patch can be built straight from the
whole-commit (multi-file) diff their main view shows, without first diving into
the commit files panel.
The handler lives on SwitchToDiffFilesController, which is already bound to
exactly those three panels and already knows how to derive the patch target
(from/to/reverse/canRebase) for the selected ref — pulled out of enter() into a
shared canRebase helper and the reused FromAndToForDiff. The post-toggle refresh
is the cheap one: these panels have no per-file patch indicator to update, so we
just re-render their own main + secondary views rather than reloading the whole
commit list on every keystroke.
Sub-commits and stash didn't render the secondary patch view at all; give them
the same secondaryPatchPanelUpdateOpts the commits panel uses, and recompute the
inclusion gutter as their diff (re-)renders, so the cumulative patch and the
gutter track the toggle.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
The next commit adds patch building from the commits / sub-commits / stash
main views, which toggle the same way as the commit files main view; only the
patch target and the post-toggle refresh differ. Pull the panel-agnostic back
end (the toggle skeleton, the line toggle, the post-toggle reveal, the patch
filename mapping) into shared free functions so both controllers reuse it.
The skeleton now takes the patch target (from/to/reverse/canRebase) and a
refresh callback as parameters rather than reading them from the commit files
context and hardcoding Refresh({COMMIT_FILES}). The commit files handler passes
exactly what it did before, so behaviour is unchanged.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Pressing space in the commit-files focused main view now toggles the
selected line(s)/hunk into or out of the custom patch, instead of being a
no-op. It's the patch-building counterpart of working-tree staging from
the main view: the selection is resolved to change-line identities the
same way (ChangeLinesInViewRange), then mapped to the patch builder's
per-file line indices and added or removed.
The crux is that the commit's diff is unchanged by a toggle — only the
inclusion set changes — so unlike staging there's no async re-render to
ride. Membership is shown by an on-demand inclusion gutter: a reserved
left column painted with a marker on every change line currently in the
patch, recomputed synchronously after each toggle and on focusing the
main view, over the existing pager output. This is what lets patch
building work over a restructuring pager at all, where the old green
first-char overlay (which rewrites the rendered bytes) can't.
space routes to staging or patch building based on which handler the
panel beneath registers, via a new onTogglePatchFocusedMainView channel
(kept separate from staging because the post-action differs: sync gutter
repaint vs async reveal). Scoped to the commit-files panel for now;
commits/sub-commits/stash and the whole-commit multi-file diff follow.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Prep for routing space to custom-patch building when the panel beneath
the focused main view is a commits/commit-files panel. stageSelectedLine
becomes the router; the staging-specific body (async re-render + reveal)
moves to stageRange. Behavior-preserving.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
The patch builder works in patch-line-index space, which the patch
explorer can supply directly from its parsed-patch state. The focused
main view can't: it only knows a selection as diff-line metadata
identities (file line number + deletion?), and those indices differ
between the raw diff and however a pager renders it.
Add the conversion at the boundary so the main view stays in identity
space: PatchLineIndicesForLines maps identities to indices (for
toggling) and IncludedLineIdentities reports the included change lines
as identities (for the inclusion gutter to match rendered rows against).
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
A reserved left-hand column that draws a per-line marker glyph and shifts
the content right past it, for the custom-patch inclusion overlay (which
needs to show which change lines are in the patch over arbitrary pager
output, where it can't touch the rendered bytes).
It's pure draw-time decoration: the content buffer, and so the diff-line
metadata, click resolution and wrapping inputs, are untouched. The marker
is drawn on a line's first wrapped segment only, and the gutter narrows
the content wrap width while shown. Off by default; SetInclusionGutter
turns it on per view.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
The reveal advanced the selection by capturing the next/previous change as a
patch identity and finding it again after the re-render. No line-number
identity is stable and unique across a stage, though: a deletion shares its
new-file number with the rest of its block (so staging one deletion of a block
landed back on the block's first line), and in the staged pane the new-file
number is the index, which staging/unstaging shifts (so unstaging a
modification's deletion missed its replacement line and fell back to an earlier
block). The previous worktree-line and adjacent-change-line matching each fixed
one case and left another.
Do instead what the staging view does: preserve the selection's ordinal among
change lines. Read the acted-on line's ordinal from the pane it was in before
the op; after the re-render, select the change line at that ordinal in the
target pane (clamped to the last). Since the op removes the acted-on change
line(s), that ordinal then holds the next surviving change — the next line of
the same block, or the next block when a whole block was staged. This needs no
reasoning about which side's line numbers are stable, so it handles deletions
and the staged pane uniformly.
The matching machinery (matchByWorktreeChange, AdjacentChangeLine) is gone; the
identity-matched restore (escape, -U preserve) and the new positional restore
now share installDiffLineRestore.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
The post-stage reveal picked its primary candidate with AdjacentChangeBlock,
which skips the rest of the acted-on line's block. That's right in hunk mode,
where the whole block is staged, but wrong in line mode: staging the first
line of a multi-line block left the rest of the block in place, yet the
selection jumped past it to the next block instead of landing on the next
(now first) line of the same block.
Use AdjacentChangeLine — the first change line strictly after/before the
selection — for the next/previous candidates. It unifies both modes: after a
whole block (whose last line is followed by context) the next change line is
the next block's, so hunk mode is unchanged; after a single line the next
change line is the next line of the same block. place stays mode-aware
(hunk-expand vs single line), so nothing else changes.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
This makes it possible to see what lines delta renders as red or green.
It's not pretty, but makes testing easier for now. Needs a better
solution eventually.
The reveal that advances the focused main view's selection after staging
captured the next/previous change block as a patch identity and found it
again in the re-rendered diff via SamePatchLine. SamePatchLine keys a
deletion on its old-file (index-side) line number, which staging shifts:
staging a hunk that changes the line count moves the index-side numbers of
every hunk below it. So a deletion-led "next hunk" candidate no longer
matched, and the reveal fell back to a worse candidate — often colliding
with a header or context row (SamePatchLine doesn't require a change line)
and, in hunk mode, snapping to the first change block. The visible result
was the selection jumping to an *earlier* hunk after staging.
Match the reveal's candidates by their worktree (new-file) line number,
which staging never moves, and require a change line of the same side. This
is safe here because the reveal only ever targets change blocks and
selectHunkAround expands to the whole block, so the new-file number's
ambiguity between two consecutive deletions (the reason SamePatchLine uses
the old-file number) doesn't matter.
The escape restore and the -U context-size preserve keep SamePatchLine:
they re-render the same staged/unstaged state, so no index-side shift, and
the latter deliberately anchors on context lines.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
delta, fed a colored diff, renders some blank changed lines (an empty
deleted/added line) as just the OSC 1717 metadata followed by an empty
line — either with no fill at all, or as a background plus an ESC[0K that
the buffer now turns into a draw-time trailing fill rather than content
cells. Either way the line ends up with no cells, so its metadata had
nowhere to live and the line resolved to "not a change".
In the focused main view that broke change-block detection: a blank
deleted line in the middle of a hunk split it in two, so pressing 0
selected only the lines above the blank and the down arrow jumped to the
rest below it.
Restore the content-less sentinel cell finishLine used to add, but only
when there is pending OSC metadata to carry — so an empty line stays
resolvable as the change it is, without reintroducing the unconditional
sentinel (and its prevFgColor coupling) that was removed.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
After staging or unstaging from the focused main view, focus stayed on the
pane the user acted in even when the side they were acting on moved to the
other pane. Two cases got it wrong:
- Unstaging the first hunk of an only-staged file splits the diff: the main
half flips to show the just-unstaged change, and the staged remainder jumps
to the secondary half — but focus stayed on the main half, away from the
staged content the user was working through.
- Unstaging the last staged hunk from the secondary half empties the staged
side and collapses the split, hiding the secondary half — leaving focus
stranded on a hidden pane.
The rule is the same in both: focus the staged side while it survives. The
stage handler now reports which focused-main pane should hold focus —
the secondary half when unstaging leaves the file split, the main half
otherwise — and the controller re-selects the revealed change in that pane
and focuses it. The split is read from the model, which Refresh has already
updated synchronously by the time the handler returns; the re-render it
queues is what the reveal rides.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Staging or unstaging can move the acted-on side to the other half of the
focused main view — unstaging the first hunk of an only-staged file splits
it, pushing the staged remainder to the secondary pane. The reveal that
re-selects the nearest surviving change after the op then has to ride the
re-render of that other pane, not the one the user acted in.
Split RevealSelectionAfterStaging's single view into a source (where the
candidate lines are read) and a target (where they're found again and
re-selected), and get-or-create the target's buffer manager so the restore
can be installed on a pane that hasn't rendered yet. Behavior-preserving:
the sole caller passes the same view for both, as before.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Staging or unstaging a selection re-renders the focused main view's diff (the
staged lines move to the other side), which left the selection at a now-stale
view position — often off the new, shorter content, so it looked like there was
no selection at all.
Install a restore before the re-render that lands the selection on the change
nearest the one just acted on, the same way the staging view advances: the
change block after the selection, else the one before it, else the acted-on line
itself (which only survives when the whole side was staged and the view flips to
the other side). It re-selects in the current mode, so hunk staging walks hunk to
hunk. A range selection collapses to a single line first, since staging consumes
it. This rides the existing restore-by-identity machinery (as the escape restore
does), so it works over any conforming rendering.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
A side-by-side rendering (patched delta in side-by-side mode) carries more than
one diff-line record per rendered row: the deletion on the left, the addition
replacing it on the right. DiffLineContent.Metadata keeps only the first payload
— enough to identify a single-column row, but it drops the right side — so a
range staged from such a view would miss half the changes.
Add a gocui accessor for all the distinct metadata payloads a row's cells carry,
and have the range collector resolve every one of them, so staging a
side-by-side row includes both sides. You can't stage just one side of a
side-by-side row; that's an accepted restriction (switch to a single-column
rendering to do it). Rows without metadata (no pager, or the buffer-parse /
hyperlink backends) keep falling back to their single resolved record, so
single-column staging is unchanged.
The full delta-side-by-side chain can't run in the integration harness (no real
pager), so it's covered by a gocui unit test for the multi-payload accessor;
end-to-end behaviour needs interactive verification with the patched delta.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
The focused main view of a directory node shows a multi-file diff, so a range
selected in it can span more than one file. Group the selected change lines by
file and apply one patch per file, logging the action and refreshing once around
the whole batch. The stage/unstage direction is uniform — the whole diff is
rendered on one side — so it's decided once for the batch.
Each change line is mapped back to its file by the path its diff-line metadata
carries, which also lets a single-file selection go through the same path
instead of relying on the selected node being the file; staging from the focused
main view no longer bails on a directory selection.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
With hunk mode the default (gui.useHunkModeInStagingView, on by default),
focusing the main view now selects the whole first visible change block rather
than a single line, matching what entering the staging view does and what the
just-added hunk staging expects. In line mode it still anchors on a single line,
as before.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Step 1 made the focused main view a staging surface for a single line. This
adds the range and hunk selection the staging view has, so you can stage (or
unstage) a range or a whole hunk in place — `v` starts a range, shift-up/down
extend one, `a` toggles hunk selection — without diving into the staging view.
The selection mode (line / range / hunk, plus sticky-range and "the user turned
hunk mode on themselves") lives on MainContext rather than the controller,
because three places need a pane's mode: the main view controller that drives
it, the focus controller that resets it when you focus the view, and togglePanel
which sets it on the *other* pane. The selected line and the range anchor stay
in the gocui view itself (its cursor and rangeSelectStartY), so the existing
native range-select rendering draws the highlight — no new highlight machinery.
Hunk bounds come from the diff-line metadata (the isChange run around the
cursor, via ChangeBlockBounds), not from a parsed patch, so they work over any
conforming rendering. The up/down keys are mode-aware: hunk mode steps hunk to
hunk, a non-sticky range collapses on a plain move, a sticky range extends.
GetOnStageFocusedMainView now takes the selected view-line range instead of one
line; the files handler collects the change lines in the range and applies a
single patch. It identifies each change line's patch line by scanning the parsed
patch and matching (file line number, deletion?) identities, rather than looking
each number up with PatchLineForLineNumber. That lookup can't tell an addition at
the very start of a hunk from the deletion above it, nor an addition from the
deletion it replaces on a modified line — both of which a range routinely spans.
As a side effect this also fixes staging a change on the first line of a file.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
ViewSelectionController owned the focused main view's line navigation (up/down
move the selection or scroll, page up/down, goto top/bottom). It was extracted
long ago in case other scrollable views (e.g. a focused command log) would reuse
it, but none ever did — it's only attached to Normal and NormalSecondary, the
two focused main views MainViewController already controls.
Keeping the navigation in a separate controller is now in the way: the next
change makes up/down hunk-aware (move by hunk when hunk-select mode is on),
which needs the selection mode that lives in MainViewController. Rather than
teach the generic-looking ViewSelectionController about that mode, fold its
bindings and handlers into MainViewController and delete it. Behavior-preserving.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
The focused main view already lets you point at a diff line and act on it
(dive into staging, edit it, open it in a PR). This makes it a staging surface
in its own right: press space to stage — or unstage — the selected line without
diving into the separate staging view.
To make that usable, the selection is now shown automatically whenever the main
view holds a diff, anchored on the first change line already visible (so the
view doesn't jump), rather than being toggled on demand from the middle of the
view. That frees space for staging and means there's always a line to act on.
Which contexts show a diff is marked by a new types.DiffMainViewContext, because
"shows a diff" is the right signal, not "is stageable": reflog shows a diff (its
selection drives edit/PR/navigation) but can't be staged, while a branch's log
or the status dashboard show no diff and get no selection at all.
Staging is delegated to the side panel beneath via a GetOnStageFocusedMainView
handler mirroring GetOnClickFocusedMainView, so what "stage" means stays the
panel's concern (the working tree stages/unstages; commits will later add to a
custom patch). The files handler resolves the line's patch identity from the
diff-line metadata, maps it to a patch line, and applies a one-line patch,
choosing stage vs unstage from whether the shown diff is the unstaged or staged
side (diffSplitState).
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
