| Commit message (Collapse) | Author | Age |
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Esc ran Toggleterm, which hopped between the newest DOC and the newest
TERMINAL. That distinction never earned its keep. It made Esc unpredictable —
which of three panes you landed on depended on their kinds, not on where you
had been — and it could not alternate between two files at all, which is the
case you hit most. Editing two files, Esc did nothing.
The replacement already existed. Last (SPC j j) is "the pane you were in
before this one, whichever it was": it walks the jump stack for the newest
entry naming a different pane and restores its line and column. So Esc, and
Shift-Esc in tty, now run Last, and Toggleterm is deleted rather than renamed
— a third implementation of "go to the other pane" was the thing to avoid.
SPC w t goes with it; the w group is the four directional moves, and the jump
group already had SPC j j.
Held down, Esc alternates. Two files, a file and its shell, a file and a
+Search — all the same, because Last has no notion of kind to get wrong.
This depends on the swap in the same series: Last reads the stack backwards,
and until hopping stopped appending, the pane you came from could fall off it.
windownav.snap needed only its keys and prose changed — its golden did not
move at all, which is the useful evidence here: for the one scenario the old
builtin handled well, Last produces an identical focus sequence.
Coverage for what it did not handle is new: a unit test opens a second FILE by
looking its name and asserts Esc alternates between two panes of the SAME
kind, which is the case that used to be a no-op.
Docs follow: tutor.txt, docs/helix-keys.md, docs/design.typ, and the builtin
index goldens, which are now one row shorter.
75/75 snapshots, both unit suites, and the macOS ABI build all pass.
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Adds -Dplatform=macos, a fourth backend beside tty, gui and web. Zig keeps the
core, the ptys, every effect and the worker threads; Swift owns NSApplication,
the window, input translation, and drawing the cell grid with CoreText. They
meet at a hand-written C ABI in src/macos/pardes.h, built as a static library
the app links.
The ABI is src/web.zig's boundary with the wasm removed, because both hosts are
the same animal: someone else owns the clock, feeds events in through flat
functions, and reads one packed cell buffer out. The browser proved the shape.
The one divergence is that the browser has no processes and forwards every
effect to JavaScript, whereas forkpty is right here, so src/macos.zig performs
them — spawn, write, resize_pty, save_file, new_file, write_dump, open_link,
set_clipboard. lsp, pipe and watch are answered with nothing and marked; the
core already tolerates that, since the browser answers none of them either.
This deliberately inverts ghostty's split, which was studied first and is
written up in docs/ghostty-macos-notes.md. Ghostty hands Zig a bare NSView*,
installs its own CALayer and owns the frame clock; Swift never renders. Pardes
does the opposite because its frame is already a cell grid and CoreText draws
one natively — the alternative is a second hand-rolled glyph atlas, which is
what most of gui.zig's 4,300 lines already are. It would also have been written
blind: the Swift half cannot be compiled here.
What makes the scaffold verifiable rather than dead code is that the Zig half is
ordinary POSIX and builds and tests on Linux. Borrowing ghostty's best trick,
build.zig translate-C's the header into the test build and src/macos.zig asserts
every constant, struct layout, and exported function's arity and widths against
it. That guard earned its place immediately: pardes_scroll grew a cell
coordinate after the Swift view had been written against the older form.
Skipped, and named as the upgrade path in docs/macos.md: the Xcode project,
xcframework, lipo and codesigning ghostty needs. All four exist for
distribution; a dev build is a swiftc invocation and a directory with a plist.
The Swift app is a scaffold and says so — every uncertain API spelling carries
an UNVERIFIED marker, and no part of it has been compiled.
tty is unaffected: 75/75 snapshot scripts and both unit suites pass.
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search/range look steps, goldens updated
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file:LINE:COL-ENDLINE:ENDCOL, with the two short forms people actually type
reading naturally: file:412:9-21 on one line, file:412-418 whole ones. Ends are
inclusive. A path feature, not a search feature — a ranged path typed in a tag
or middle-clicked out of a shell's output selects just the same; search is only
its first consumer.
The dash is the fussy part. `-` was already a file char, so a ranged word
survives click expansion whole, but a range needs a number on BOTH sides or
my-file:10, build-2 and 2026-07-30 would stop being paths. Table-driven test in
look.zig for exactly that.
Selecting goes through the cellRange/setPaneRange pair the multi-cursor work
left, and hxOff clamps both ends, so a stale range selects what still exists
rather than crashing or reaching past EOF — pinned with an 8:6-400:9 range in a
nine-line file.
Producers: / search, Grep, and five LSP sites through a new spanRow — goto,
references, rename tokens and both symbol lists were throwing away real
protocol ranges at path:line:col. Left alone deliberately: Find rows are bare
paths with nothing to span, a jump is a spot not a span, and the diagnostic and
format paths only ever have a point, where half a range would be worse than
none.
One knock-on worth knowing: n now leaves an EXPLICIT selection, so a topbar
execute chords it. grep.snap's no-match step was silently becoming
`Grep TARGET`; it runs from the leader path now, which never chords, and the
dedicated chord steps stayed where they were.
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It never did — the effect arm was `.watch => {}` with a comment saying a shell
that never delivers the event simply never reloads. That was written as a
deliberate scope cut and it is the whole bug: the user runs pardes-gui.
The tty watcher was fine, and I proved all four suspicions false against a real
binary in a real pty with the write done by a stranger process and NO input
delivered afterwards: the loop does wake (postEvent signals an empty queue),
zig fmt's rename-over does fire MOVED_TO and is caught, three panes across two
directories all reload and closing one leaves its neighbour still following,
and the self-write hash guard does not swallow a real change. The live session
even had its inotify mark on src with the right mask and re-read config.zig
when I touched that directory.
Duplicated rather than shared with tty.zig, the way the two shells already each
own LspJob, forkShell and their pty readers. The headless PARDES_TEST_GRID path
deliberately passes -1: its contract is one frame per scripted input, and a
reload on its own clock would put an unasked-for frame in the stream.
filewatch.snap proved less than it looked. Its real blind spots were the
rename-over shape — the old script only truncated, so it saw CLOSE_WRITE and
never MOVED_TO — multiple directories, and the one that mattered: the suite
only ever runs the TTY binary, so it structurally cannot see a gui-only
regression. It now uses a new `run` directive whose writer is a child of the
RUNNER, so nothing it does reaches an app pty.
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228 in the ring: 3 pardes ships plus all 214 helix runtime themes and all 11
zed variants across its three families. No exclusions.
inherits is what this cost. 76 themes need it, so the reader is two passes now,
and the merge is WHOLE-KEY rather than field-wise because helix merges the
theme body at depth 1 — the three *_transparent themes clear their parent's
background with an empty table, and a field-wise merge would leave it painted.
I had that wrong until I read helix-view/src/theme.rs.
At 214 files the generator meets themes that are SPARSE rather than broken, and
the old fatal-on-anything-missing would have rejected them. Every fallback is
helix's own rule: no background at all means wear the terminal's, so bg and fg
go null (13 themes, correctly); the twelve RGB fields that cannot be null fall
back to ghostty's default palette entries 7 and 0, which is exactly what a
pardes terminal already paints an unstyled ANSI index as. fatal is kept for
what genuinely cannot be read.
Three real bugs surfaced only at scale: #ccc shorthand doubles the nibble
(helix's rule, 58 colours), a quoted inline-table key silently dropped a
selection colour, and four themes name a cursor background EQUAL to the page
because they are about to reverse that cell — taking it painted an invisible
move box. 0 degenerate themes out of 225 now: no fg==bg, no syntax colour on
its own background, no invisible box.
Collisions get an unconditional rule rather than a clever one: a zed variant is
always <name>_zed, because both projects ship gruvbox, ayu and one, and a
conditional tag would move a name when the other source changes. A comptime
assert holds it.
Cost: no-op build 0.257 -> 0.276s, a pardes.zig change 46.8 -> 47.5s, binary
+0.98%. The generator does 217 sources in 54ms.
NextColor stays and is no longer a way to REACH a theme — but the browse got
better, not worse: the generated half sorts by name, so its neighbours are that
theme's own family. theme.golden's fourth click moved from ayu_dark to acid,
which sorting 225 names does; themesel gained a tail capture proving row 228
renders.
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zig build perf drives the core directly — event, effects, one frame, no pty —
over four generated fixtures: 1k lines, 50k, 300k, and 400 lines of 8000
columns, because a file that is long and a file that is wide fail differently.
Every sample seeks somewhere else in the file first, since measuring at line 3
of a 300k-line file hides exactly the bug.
perf record said half the run was scanning for newlines from byte 0. So File
carries a line index, built on demand and invalidated in exactly ONE place —
setContent, the funnel every content swap already goes through. That killed the
scrollbar's per-frame line count (12.6% of the whole run by itself), scrollBy,
ensureCursorVisible, lastNavRow, the syntax window bounds and two O(scroll)
walks. normalKey computed max_line as a const at the top: two full passes over
the buffer on every keystroke of every kind, for three g/G branches. It is lazy
now. The modal primitives each walked the text twice for the same line.
And the visible window was re-parsed on every scrolled row — a third of a
megabyte per keypress on the wide fixture. The highlighted range is remembered,
a scroll inside it is free, and only a re-parse that FOLLOWS a scroll takes
slack: doing it unconditionally made typing 2.1x slower, since every character
paid for a band it could never amortise.
One j on a 19 MB file: 37.8ms -> 266us. Render: 4.1ms -> 77us. Open costs 1.25x
more for the one extra pass, which buys 54x on every frame after, and 8 bytes
per line of memory.
Left standing, measured and named: edit-char is 14ms on 19MB because content is
immutable and every keystroke copies the buffer. A third of that is the index
rebuild, which could be a shift if setContent knew the edit offset; the rest
wants a rope. bodyText's double copy and Surface.print's per-cell decode never
rose above 2% of the profile afterwards, so they were left alone.
No golden moved.
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