| Commit message (Collapse) | Author | Age |
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file; pty/ctl reads back
A read parked on a queue was retried only when some unrelated write had
to wait, so a follower of /log (and a reader of event or pty/data) slept
until then. Pushing a record now marks the turn parked, and giving the
turn up wakes them (measured: stuck past 3 s before, 0 s after).
event and pty/data consume what they read, so a second open for reading
is refused with rio's "file in use" (EBUSY through 9ns); writers still
get in, and pty/data queues output only for an actual reader. pty/ctl
reads back "winsize C R", in the words it takes.
/log fixes from review: a record longer than a read comes in pieces (a
shell read loop failed on long lines), every repeated message is logged,
a record bigger than the ring is cut to fit instead of emptying it, the
ring is reserved at boot so recording never allocates, and panes present
at boot are recorded first.
Co-Authored-By: Claude Opus 5.5 <[email protected]>
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/log is now one ring (64 KiB, 4 KiB on the board) that records new, del,
rename and save, and a msg line for everything the editor says. An open
freezes it, so cat log shows what happened lately and ends; writing
follow to that same open makes reads past it wait for newer records, and
a follower the ring outran reads lost N first.
The message log keeps the pane's serial, not its reusable slot.
A test now fails when the tree serves a file /README never mentions; it
caught pty/status, now documented along with typing through pty/data.
Co-Authored-By: Claude Opus 5.5 <[email protected]>
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the pane a directional Del grows
A pane that joins a column whose only other pane is an untouched empty
scratch (Newcol's, or the stand-in a closed column leaves) takes the column
whole. Checked at the end of the step, since the pane that asked for the
joiner is often the placeholder itself.
Del k|j focuses the pane that took the rows.
Co-Authored-By: Claude Opus 5.5 <[email protected]>
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Del takes a side: `Del k` gives the closed pane's rows to the nearest
expanded pane above it, `Del j` to the one below, each falling back to the
other side when it has none. DelAbove and DelBelow are those two lines, with
no path of their own under SPC.
A bare Del started from a key -- SPC d, Enter on the tag word, a row run from
an output buffer -- on a pane with expanded panes both above and below asks
instead of guessing. The question is a prompt like Save's or a search's
(Pane.Prompt.del_side), so it is painted on the pane's notice band by the
same path, and the next key answers it before any mode sees it: k or Up,
j or Down, anything else keeps the pane, as does a click. Only a key press
sets Pardes.can_ask, so a click, a 9P ctl or event write, a startup line, a
restore and a shell exiting all close the pane at once, the rows going
where layout.absorbVWeight has always sent them. A collapsed pane is not
asked about (it has only a tag row to give), and collapsed neighbours are
passed over (layout.expandedNeighbor, which Collapse now uses too).
removePane and absorbVWeight take the recipient; every other caller passes
null. Three scripts that closed a middle pane with SPC d answer k, which
is where the rows went before, and their goldens are unchanged. delask.snap
covers the question, Esc, j, a clicked DelBelow and a clicked Del.
Co-Authored-By: Claude Opus 5.5 (1M context) <[email protected]>
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shows it
The column grip worked in the GUI but showed nothing anyone could see.
Driving the real SDL window with pixel mouse events, press, drag and
release all reach the core and reorder or resize the column; the feedback
is what failed. The grip kept its muted color while held, and a reorder's
insertion rail was drawn in the gutter cell at the destination edge. The
GUI paints that cell as the column's scroll rail, and at the window's left
edge, the common case of moving the right column first, the dashes were
lost in it. From the leftmost column, a drag short of a neighbour's middle
shows no rail, rightly, since nothing would move, but nothing said the
grip was even held.
A held grip now lights in column_box, the accent its muted color is mixed
from, and the rail takes that color. The rail runs in the seam cell left of
where the column's rule will land, where a border drag's rail runs, for a
reorder and a left-edge move alike; at the window's left edge, which has no
seam, it runs just past the scroll rail, leaving column 0's grip and pane
boxes whole. A carried column's pointer aims at a place, not a word, so the
column tags no longer light the word under it, and a release snaps the
layout as a border drag's does rather than animating it. The preview and the release both
ask layout.columnDrop where the column goes, so the rail stands where the
release puts the edge, and the drag no longer carries its unused column
index.
The GUI test feed takes ESC]777;mouse;<down|up|motion>;<button>;<x>;<y> in
window pixels and dispatches it as an SDL event. test/column_grip.py uses
it to drive the grip through the same pixel-to-cell and tag hit path as a
hand on the mouse, and checks the grip, the rail and the result against
GPU captures and the 9P grid.
Co-Authored-By: Claude Opus 5.5 (1M context) <[email protected]>
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resize columns from their grip
Every tag band (workspace, column, pane) is centred in its row, so text sits
at one baseline offset. Anchors are inset from the column rule by that same
margin, so they are square and the band frames them on the left, top and bottom;
the pane mark moves to stay centred. When the window is not a whole number of
cells, the bands, rules, spines and scroll thumbs at the right and bottom edges
run on through the leftover pixels.
A column grip dropped short of another column's place now moves the column's
left edge, with a dashed rail preview, sharing setColumnPairWidth with the
border drag. A release still on the grip changes nothing, and a pair too
narrow for two MINW columns is left alone.
PARDES_TEST_PAD adds leftover pixels to a test-mode window and capture.
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messages
PDF highlights (hover preview, search, selection) are baked into page rasters,
and any change re-rendered the whole page with MuPDF; the TTY then re-sent it
as base64 (4.7 MB a page), the GUI as a new texture. Worse, a pointer motion
over a PDF invalidated the page even when no preview was shown, so every
motion paid that. Now:
- A raster whose baked highlight set equals the wanted one is left alone.
- A highlighted page keeps its clean rows (before highlights and tint); a
change repaints only the rows of quads that differ, running MuPDF's
highlight pass (pardes_pdf_paint_highlights) over those clean rows and
tinting them: the operations a full render performs, so the pixels are
identical. MuPDF band renders are NOT bit-identical to a whole page (edge
rows, resampled images), so they are never used to patch; the comment
claiming otherwise is corrected.
- ImagePlace.patch hands shells the changed rows; the GUI uploads just those
rows into the texture it holds.
- The TTY probes kitty shared memory (t=s) with an id vaxis never reaches and
sends rasters as a /dev/shm name when the terminal reads it; direct base64
otherwise (ssh).
- Shells that take row patches (GUI, TTY with shm) repaint a selection while
it is dragged instead of only on release.
Latency elsewhere:
- TTY: an animating frame no longer sleeps 16 ms blind; a tick thread posts
into the input queue, so input inside the frame is handled at once.
- TTY and GUI: queued pointer motions coalesce to the last.
- GUI: a skipped swapchain image re-arms the frame (3 retries); animations
still tick while nothing presents.
- Editing: the line index is carried across an edit instead of rebuilt from
a scan of the whole file per keystroke.
Messages fall into their row (ease-in; the GUI slides the band out from under
the tagline, a terminal fades it), stay until the next input as before, linger
MessageLinger ms (default 800), and dissolve (ease-out). MessageAnimation
toggles it; both are settings, in Config and startup files. The snapshot
harness pins the old behaviour. The detached server now ticks animations.
A restored terminal comes back live: the old screen and scrollback (dumped
as clean VT by ghostty's formatter, replayed at the new size; older dumps
fall back to their rendered text), a dim
"restored history" marker, then a new shell in the directory it was in.
Right-click on a line number in a file pane looks at that line (a sticky
context header's number included).
Measured with an external pty driver (TTY), an in-process fence trace
(GUI, PARDES_TEST_LATENCY), and test/pdf_pointer_bench.zig (pixel identity
against the baseline and a whole-page oracle); balanced A/A/B rounds, paired
per-round statistics.
Messages stack: each event gets its own row and its own fall, linger and
dissolve; a line keeps its row until it leaves and a new one fills the first
free row. Announcements and statuses are replaced in place, not stacked.
MessageFall, MessageDissolve and DumpDir are settings Config reports.
Co-Authored-By: Claude Opus 5.5 (1M context) <[email protected]>
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The editor's loop was the only thing that could answer a 9P request, which
made the editor's own syscalls through a mount of its own tree -- a Look at
/mnt/9p/pardes/<me>/anything under a `9ns --mntgen` view, a Save into it --
requests only the blocked loop could serve. The name-based refusal that
followed (ownMountSuffix) and the in-process routing of a mount of oneself
(Client.sameSession) were patches over that, and both are gone, with the
mailbox that shipped every request to the editor's thread.
One rule replaces them, `pardes.turn`: the core is single-threaded, the
editor's thread has the turn by default and gives it up in two kinds of gap
-- while it waits for input and while a step of it is out in a host syscall
-- and a cloud9 connection task takes it in those gaps to answer. `out`
counts the steps that are out, from any thread: while one is, the core reads
consistently but that step still holds pointers into it, so a request that
would change a pane (a write, a truncation, an rmdir) is parked in the
engine and retried when the turn is next given up with nothing out, and the
editor's own wake waits for the count to reach zero. It is never a write of
its own that a step waits on out there -- writes come from a shell
performing a save between steps -- so a parked request is never the
syscall's own, and making a pane or rendering a screen need not park:
every yield sits before its step's mutation, so the layout and the surface
are whole under it. A changing request that queued effects is answered
once the editor has performed them (`echo Save > exec` returns with the
file written, as acme's `put` does), and it settles the way a step does,
because without that a /log reader waited for the user's next keystroke.
Every host syscall on a user path has to give the turn up, not fs.zig's
alone: the first end-to-end run hung in `inotify_add_watch` performing the
new pane's watch effect. PDFs and images are read whole at open, so no
draw goes out into the host. The core's allocator takes its fixed buffer
through the lock-free interface, since a connection task allocates while
the editor's thread is out in a syscall that allocates too. A Restore puts
the replacement in first and releases every task waiting on the old core.
cloud9 (pinned at eb1a104) parks an open, a truncating wstat, a clunk and a
remove on `again`, not only reads and writes, and answers a parked job
whose fid was clunked without asking the backend.
Verified: test/selfmount.py runs the editor under `9ns --mntgen` and
Looks at, reads and Saves its own tree through the mount; a unit test pins
that a change parks while the editor is out mid-step and lands when it
rests, while a read is answered in the window. 9P over the Unix socket
against a tty session, same machine, Debug builds: a read of /index 278us
-> 61us, a truncating body write 1184us -> 609us, exec Save 718us -> 583us;
the gesture benchmark is unchanged (geometric mean 0.997 over 53 cells).
Also from the reviews: a notice chip over an image or PDF pane was painted
out by the picture drawn after the cells, so pictures give up the rows; in
the GUI a tree-sitter context band painted over the chip, so body layers
are emitted first; a message is one row of printable text, its 256-byte
cut never leaves half a glyph, and one wider than its pane keeps its tail
(the file name, the reason) rather than its head.
Co-Authored-By: Claude Fable 5.1 <[email protected]>
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A notice is an overlay now, which is the one place it is NOT like the
tree-sitter context: it takes no row from the body and moves no text. Each one
is a chip as wide as its own message plus a blank cell either side, anchored
to the pane right edge on the body top rows. The rest of each of those rows is
ordinary body text that still reads and still answers a click -- Notices.left
records where each chip starts, and the hit test refuses only the cells it
covers rather than the whole row.
The width is counted in GRID columns rather than scaled into the tagline face
the chip is drawn in, because the canonical grid is what a terminal client
draws and a chip narrower than its own text there would clip it; the narrower
tagline face simply leaves a little more room inside the chip. The tag layer
takes the geometry the grid pass already chose, so the two cannot disagree and
the GUI skipping the cells a tag layer covers leaves no stub behind.
Pane.body_offset is gone with the reservation it existed for, and bodyTop
takes only a rect. The body layer keeps every row it had, the scrollbar runs
the full body again, and the GUI smooth-scroll extents go back to the pane.
Co-Authored-By: Claude Opus 5 (1M context) <[email protected]>
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A message, a leader chord and a prompt used to share one row of body text at
the bottom of a pane, wearing the tagline font and nothing else about a
tagline. Now each one is a TagLayer of its own, emitted through the same
renderHeaderLayer the pane and column tags go through, so it gets the tagline
height, the small-font metrics, the band offset and the border for free --
none of which a body-grid row can have by changing its font role. The text is
right aligned. The prompt stays on the canonical grid because it owns a
cursor, and a cursor has to sit on a real cell.
The body starts BELOW the bands rather than under them, the way tree-sitter
context rows already worked. Pane.body_offset is how many rows they took and
Pardes.bodyTop(pane, rect) is the one place that answers "where does the body
begin" -- replacing fifteen copies of `if (tag_bottom) r.y else r.y + BOX_H`
spread across the paint, hit-test, scroll, PDF and image paths, which is what
let the bands and the text under them come adrift. Every notice is painted on
the grid as well, because the grid is what a terminal client draws and a band
it cannot see is a message it never gets; the GUI skips grid cells a tag layer
covers, so nothing is drawn twice.
Three bugs the bands exposed, fixed here:
- a prompt band flush with the right edge put its caret one column past the
pane, which the detached wire refuses -- so every frame was dropped for as
long as the prompt was open. The band now reserves that column.
- a click on a band mapped to Sel row 0, which is the TAG row: clicking
chrome expanded a word out of the tagline and ran it as a builtin.
- a watched file reloading under the editor changed the core without going
through update, so needs_frame was never set and the reload was never
drawn. Pardes.invalidate() is the name for that, and the file and theme
reloads call it.
A session can now drive its own 9P namespace instead of being refused one:
ownMountSuffix answers what a path names inside this editors own tree and
resolve, readLimit and write serve it from memory rather than making the
syscall that never returns. The match is anchored to whole components under
the registrys 9p/pardes/<name>, because a bare /pardes/<name> anywhere in a
string would claim ~/src/pardes/<name>/README -- and, before write learned the
same trick, write the trees bytes over the real file. readFileLimit and
writeFile refuse instead, having no core to answer from.
A toggle setting SETS when given `on` or `off` and only flips when it is bare,
so the report LocationsConfig prints can be fed back as configuration and mean
what it says.
Snapshots: 97/98, from 0/98. The goldens were several commits stale and 17
scripts had stopped running; `config <line>` is a new script command that
appends to the per-script startup config, so a script that clicks body
coordinates pins `Verbose off` instead of counting the rows an announcement
moves. nested-optout is left failing on purpose: two levels of nesting prepend
vaxis F3 codepoints to typed lines, which is a real bug and is written down in
docs/divergences.md with a repro.
Co-Authored-By: Claude Opus 5 (1M context) <[email protected]>
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The registry sweep could delete a live socket, anywhere on the filesystem. A
reviewer reproduced it: a socket that is bound but has not reached listen(2)
answers ECONNREFUSED exactly like a dead one -- that window is every server's
startup -- and the sweep then followed the entry's symlink and unlinked
whatever absolute path it named. It now follows a target only into the
directory our own sockets live in and only to a `pardes-9p-*.sock` name, it
re-probes immediately before deleting rather than trusting a probe that is by
then several syscalls old, and a readlink that exactly filled its buffer is
treated as the truncation it is. The test grew a case for an entry whose
target is not ours: the entry goes, the file does not.
Ctrl-V in raw tty mode was a black hole when the yank register was empty --
neither typed nor forwarded -- so vim's visual block, readline's quoted-insert
and every other program's Ctrl-V simply vanished. With nothing to paste the
chord belongs to the program again.
The lone-ESC flush added earlier was dead code. vaxis already returns Escape
for a one-byte 0x1b (`Parser.parseGround` asserts `input.len == 1`), so the
carried byte it waited for can never exist; a reviewer showed a 3 ms gap and a
60 ms gap behaving identically. Removed rather than left to imply a guarantee
it never provided.
A shell whose editor is gone can start one again. Naming a live but
unreachable session made `pardes <file>` exit 1, which let a stale environment
variable lock someone out of their own editor; it falls through to an ordinary
session, as it did before the variable existed.
Also: the macOS ABI check for `pardes_topbar_pane_border_px` had been replaced
by a duplicate of the line above it; `--startup` now fails on a leak the way
every other measurement in that file does, and stops calling its maximum a p95
below twenty samples; the served README and the skill no longer tell you to
write to `data` with `>`, which truncates the whole body before the write
lands; `docs/v9fs.md` described the allocate-on-walk design that was rejected;
and `test/fs.py` keys nesting off `PARDES_PID`, so its forwarding case stops
passing only when the runner happens to be inside a live pardes.
fs-test now reaches its one documented pre-existing failure instead of dying
early. Suite 778/783 with the two known crashes.
Co-Authored-By: Claude Opus 5 (1M context) <[email protected]>
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A --startup case in the perf harness times Pardes.init and the first frame for
each boot layout, with the same --json and --base shape as the others, so these
are a baseline rather than a one-off reading. The core boots and paints in
0.22 ms (tty) to 0.30 ms (classic): about one percent of what starting the
editor costs, and nothing to win.
The other 99% is one thing, found with perf record rather than guessed at.
Zig's start.main allocates through the Debug-mode DebugAllocator, which
captures a six-frame stack trace per allocation, and the first capture parses
and sorts the DWARF unwind tables of an 800 MB binary -- 22% of all samples sit
in mem.swap under that pdq sort. It is not the dynamic loader (25 us), not
static initializers (the binary has no .init_array), not paging (435 page
faults), and not lockStderr. std/start.zig:694 hardcodes DebugAllocator(.{}),
so there is no knob short of the build mode.
Controls that pin it down: a bare std.process.Init hello-world starts in 3 ms,
the ReleaseFast pardes-perf binary in 4 ms, /bin/true in 1 ms, and a Debug
pardes in 22 ms. The gui binary's 107 ms first run was cold page cache; warm it
matches the tty one.
So the conclusion recorded in features.txt is to leave it alone. Twenty-two
milliseconds is imperceptible for an editor, and the only lever is switching
the default build mode, which would multiply an already ten-minute build to
save eighteen milliseconds of startup.
Co-Authored-By: Claude Opus 5 (1M context) <[email protected]>
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The Tcreate that replaced acme's /new was a step away from the idiom dressed
up as a step toward it. A pane is named by a server-assigned serial, so the
create ignored the client's name: `mkdir /pane/foo` succeeded and left you
/pane/12. A mkdir that does not make the directory you named is worse than the
read-with-side-effect it replaced, and it broke in the shell workflow that
motivated the change. `create` is out of the declared features, so Tcreate is
EPERM again; Tremove stays, since `rm` to close a pane is unambiguously right.
/pane/new is now opened, not created: the open makes the pane, the read of
that fid answers its serial, two reads agree, and closing it leaves the pane.
That is /net/tcp/clone's mechanism (kernel/network/ip/devip.c, in ipopen),
not acme's, and the difference is deliberate. acme allocates during the walk
and lands inside the new window, so /dev/new/body works in one step, and it
can afford to list `new` because a Plan 9 directory read carries every entry's
stat and nothing walks. A kernel or FUSE mount walks and stats each name a
listing gave it, so allocate-on-walk would make a pane per `ls -l`. Allocating
on open keeps `new` listed -- a stat is not an open -- at the cost of the
one-step new/body. `new` stays unreachable from an editor path, because that
resolution serves Look hover previews.
The idiom pass behind it, read out of the Plan 9 tree at
~/05-genizah/principia-softwarica rather than recalled:
Rerror carries a string, not an errno (man 5 error: `ename[s]`), and acme
names every refusal. The five refusals pardes shares with acme now say what
they mean; the generic sites keep their bare errno rather than invent strings
acme does not have. body and tag declare DMAPPEND, which they had always
behaved as (acme(4): "always appended; the file offset is ignored"), checked
first against Linux's fs/9p, which never maps the bit. excl stays unset
everywhere, because acme sets DMEXCL on nothing. Blocking reads, per-object
addr scope and the readable pane ctl were already right. Real stat sizes and
qid versions stay: acme reports length 0 and version 0 for everything, and
Linux clients need better.
One bug fell out of it. open reset the addr range, so `echo '#0,#5' >addr;
cat addr` answered `0 0` and `cp addr dot` copied zeros. acme(4) makes the
contract explicit -- "a regular expression may be evaluated by writing it to
addr and reading it back" -- and acme gets away with resetting on the 0-to-1
open only because its clients hold the fid across both. A shell cannot: that
is two opens. The register is cleared by truncating it now.
Co-Authored-By: Claude Opus 5 (1M context) <[email protected]>
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Pty children are exec'd with their own TERM/COLORTERM/TERM_PROGRAM instead of
inheriting a .app launch's empty environment, and ttyTaken finally answers on
darwin — libproc walks the tty's foreground process group — so Escape reaches
the child and Exec stops believing every pane sits at its prompt. The
occupancy suite runs on both platforms now.
The workspace tag row moves into the native menu bar as a Builtins menu.
-Dworkspace-tag (default off for -Dplatform=macos, on everywhere else) drives
it, and Pardes.topBarHeight replaces the TOPBAR_H constant so the core stops
reserving the row.
The view pins every variable-font axis to the file's own default (Maple Mono
came up Thin otherwise), shapes ligatures, carries per-shape pointer cursors,
and draws the look-hover affordance as refracted glass. Tag rows fill edge to
edge, with the anchor box painted back on top of that fill and its mode glyph
centred on the same square. Theme accents re-saturated across the set.
Co-Authored-By: Claude Opus 5 (1M context) <[email protected]>
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The 9P tree stops being a command language wearing a filesystem. /new
created a pane as a side effect of a *read*; it is now Tcreate in /pane,
with Tremove to close, which cloud9's engine has always supported and the
editor never declared: tree.zig now says
`features = .{ .create = true, .remove = true }`. Eleven pane ctl verbs
become files that can be read as well as written -- dot, limit, dirty,
mark, scroll, look, exec -- leaving ctl with `get`, the one verb no file
would say better. Root /ctl splits into a read-only /status and the
/look and /exec files whose write IS the click. stat carries real sizes
where it used to answer 0, and qid versions track a pane's revision, so a
client can poll for change without re-reading the body.
Commit a624a56 moved raw-tty keys to an early-return branch that knew only
Ctrl-B and bare Escape, and in the same edit deleted the paste branch below
it. That cost Shift-Escape (the unconditional way out of tty mode) and both
paste chords: Ctrl-V and Ctrl-Shift-V reached the child as keystrokes, so an
agent CLI running in a pane took Ctrl-V for its image-paste binding and
answered "No image found in clipboard". Both are restored, with tests.
Nested detection was not subtly broken but deleted: 60367d8 removed
nested.zig's process-ancestry walk and left "am I inside pardes" derived from
PARDES_FORWARD_LOOK, which read "0" both for --nested and for "the listener
did not come up". PARDES_PID now answers that question on its own, checked
with kill(pid, 0); PARDES_9P and PARDES_PANE answer how to reach it; the flag
is gone. The posted-9P registry also self-heals now -- a session that aborts
cannot unlink its own socket, so posting sweeps entries whose target refuses
a connection, symlinks only and on a definite ECONNREFUSED only.
Elsewhere: tty scrolling is sticky-bottom, following new output only from
the last row, with typing and entering raw mode snapping back to live; the
boot layouts are a Boot enum instead of a chain of ifs, and the bare tty
startup (Boot.tty, which main.zig names) opens an empty text pane under the
shell while tests keep Boot.tty_shell; builtins announce themselves on the
message row under a Verbose setting that is on by default; Config prints
each setting the way you would type it back, so WindowOpacity 70 rather than
"WindowOpacity: 70%"; LocationsConfig opens its window only when called bare;
every tagline puts the word that closes the thing last, and a column now
outlives its panes -- closing the last one leaves an empty pane, and only
Delcol, newly on the column tagline, takes the column away.
Co-Authored-By: Claude Opus 5 (1M context) <[email protected]>
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The served tree loses the self/ level: /index /ctl /new /log /screen
/listeners /pane/<n>/... /os, with /src only in -Dembed-sources=true builds
(default off, on for esp32p4). ctl speaks the editor's own language with two
lowercase verbs, look TEXT and exec TEXT, plus acme's addr verbs; the new/
factory directory becomes one clone file; cons is gone (exec Msg); name and
sel are files; stats report real lengths, modes and mtimes; /log streams
pane new/del/rename/save events. The tree code lives in src/ninep/
(tree, pane, ctl, addr, pty, events, screen, sources); fs.zig keeps host
access, mounts, resolution and find/grep. Same engine and transports.
README (fs-help.txt) and docs rewritten; tests updated and extended.
Co-Authored-By: Claude Fable 5.1 <[email protected]>
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A swipe that was still moving when the fingers lifted stopped dead. The dial
next to it has thrown properly since pardes_rotate_end, and this is that same
curve on the scroll accumulator: velocity sampled between events off the
monotonic clock, weighted toward the newest sample because a flick is decided
by how the hand was moving when it left, and a fling that ramps up from zero
at the floor rather than switching on at it.
A coast stops at the end of a document rather than spinning its remaining
velocity against the edge, which is why spendScroll now reports whether the
pane moved and why paneAt is public. Only a step that delivered a press can
report an edge — the many steps between two rows cross nothing.
Nothing suppresses AppKit's own momentum, and nothing needs to: its momentum
events are ordinary pardes_scroll calls, every one of which cancels the coast
before spending its travel, so on a real trackpad the system takes the gesture
over about a frame after the lift and the tail it ends on is below the floor.
This is the path for devices AppKit does not fling for — and the only one a
script can reach, since NSEvent phases have no public constructor.
momentum.snap asserts both halves, which is why it needs the long scrollback:
a flick with no document left proves nothing. A slow swipe is byte-identical
after the release; a hard one coasts twenty-four rows further on its own, and
a finger back on the pad stops it there.
Co-Authored-By: Claude Opus 5 (1M context) <[email protected]>
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The builtin was gated on the SDL platform, so the macOS shell never registered
it and the setting had nowhere to land. macOS already had transparency, but
only the binary kind a theme decides — a theme with no background of its own
drops the ground and the blur shows through. WindowOpacity is the graded,
theme-independent version, and the window had no way to hear about it.
pardes_window_opacity reports the percentage and acknowledges the request in
one read, beside pardes_theme_bg: an SDL surface can arrive without an alpha
channel and has to be able to refuse, while an AppKit window always composites
per pixel, so there is nothing here to refuse and no rollback to perform.
The view then paints the rule shaders/ui.frag.glsl states for the SDL shell:
backgrounds — ground, cell and band fills, and the chrome rules over them —
take the alpha, glyph ink never does, and the block cursor is exempt because
it is foreground chrome that happens to be carried in a cell background. That
exemption is why the cursor joins the colour in the background run key; it can
no longer share a fill with the cells beside it.
Two things the harness was missing fall out of testing it: it never adopted
the theme background or the opacity, so a Theme or WindowOpacity in a script
moved the core and never reached a pixel. draw-opacity records both ends of
the alpha range, which is what makes the two-sided contract assertable —
60% reads 153..255, and 0% reads 0..255 with the ink still standing.
Co-Authored-By: Claude Opus 5 (1M context) <[email protected]>
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Tag text stopped living in the frame grid when the core moved the topbar, the
column bar and every pane tag into tag layers of their own; the grid keeps the
chrome and the physical grips. readFrame still read the grid alone, so every
capture recorded blank header rows and each script timed out waiting for text
that was on screen but not in the dump. Flatten the layers back over the grid
at one cell per column — the tty backend's spelling, which these goldens exist
to stay comparable with — and follow pardes_font_take to its size out-param.
The goldens were recorded before the column bar and before the tag gap, so
they are rerecorded here: the captures now agree column for column with what
the tty renderer paints today.
Co-Authored-By: Claude Opus 5 (1M context) <[email protected]>
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