| Commit message (Collapse) | Author | Age |
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not windows and a repeat cap
The windows returned wrong matches: a candidate reaching a window's edge was
left to the next window, half a window on, which could answer a match starting
mid-token rather than the leftmost, and addr then pointed data's next write at
the wrong bytes. The repeat cap missed mvzr's own worst case, a chain of a?,
and alternation under a repeat, each exponential inside one mvzr call the
deadline could not interrupt; and it refused ordinary s/S patterns. build.zig
now patches the fetched mvzr at build time with a step counter on its
backtracking recursion (matchPattern), so a fresh fetch keeps it and a moved
anchor stops the build; regexp.zig gives each compiled pattern a budget, about
300 ms here, and a search that spends it fails as taking too long. Windows,
the cap and their special cases are gone, and matches are exact again.
Co-Authored-By: Claude Opus 5.5 <[email protected]>
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'<name>: Modified' read like a failure to retry, and a script that retried
Exit or Restore threw the text away without knowing it. The refusal now names
the word asking and what repeating it does, '<name>: Modified (Exit again to
discard)', and the skill sets it apart from lock's 'file in use', which is
the one to retry.
Co-Authored-By: Claude Opus 5.5 <[email protected]>
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Restore replaces every pane with a dump's, so a pane edited since its last save
lost that text without a word, where Exit asks. acme's Load only adds a dump's
windows and so never asks; Restore now asks what Exit asks (acme's rowclean and
winclean, wind.c:511-529): each modified pane says so once, and Restore again
with nothing edited since goes ahead. Exit and Restore share the check and its
warned-at revision, as acme's winclean clears one dirty flag for any asker.
Co-Authored-By: Claude Opus 5.5 <[email protected]>
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waiting pty/run is cancelled
Review asked the docs to say what a script trips on: acme ignores OTRUNC on
data (fsys.c:543), so truncating it is an extension; addr sits past each write,
so a second echo x > data inserts after the first; and a pty/run line waiting
for a fresh terminal's first prompt waits for ever if none is drawn, so the way
out is to interrupt the read. The lock's retry advice was already there.
Co-Authored-By: Claude Opus 5.5 <[email protected]>
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A client retrying a write that fails the same way pushed one err line after
another until the log's ring held nothing else. The same err as the newest
record is now that record with a count, (x4), as +Messages counts repeats; a
follower that has already read the record still gets each repeat as its own
line, since it may be waiting on exactly that.
Co-Authored-By: Claude Opus 5.5 <[email protected]>
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Kill queued a signal effect for later, so the job it saw running by its marks
could have ended, and another started, before the signal went; and with job
control off the job shares the shell's process group, so the host skipped it
and Kill reported nothing. Kill now calls the host's kill_job while it holds the
turn, and when the only job is the shell's own group says 'Kill: no job to
signal', which also fails a write of Kill to ctl.
Co-Authored-By: Claude Opus 5.5 <[email protected]>
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windowed, 300 ms deadline
mvzr backtracks with no bound on its work (a*a*a*a*x over a hundred a's takes a
second, each repeat multiplying by the haystack length), and a search runs holding
the editor's turn, so one pasted pattern froze the editor. pardes does not write or
vendor a regex engine, so regexp.zig bounds what it hands mvzr: more than four
repeats is refused, a line longer than a window sized from measured worst cases is
searched in half-overlapping windows, and a deadline stops the search. addr names
each failure; normal s/S keeps what it found. The prescan also stops reading an
escaped backslash before n as a newline, and ends a class where mvzr does.
Co-Authored-By: Claude Opus 5.5 <[email protected]>
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Kill quit the editor, which in acme is Exit; acme's Kill stops the
commands it started. Exit now quits as acme's does (exec.c, rowclean):
it refuses once, naming each pane with unsaved text, and quits when
asked again with nothing edited since (a small scratch is not asked
about). Kill, bare or with names, stops the commands pardes typed into a
terminal (an exec, a middle click, a pty/run) while their shell's marks
say they run, by SIGTERM to the terminal's foreground job, never to the
shell (acme posts the kill note, which terminates). Both are session
builtins; the topbar's Kill becomes Exit, same width, and every golden's
topbar row changed by exactly that word (checked line by line); the
builtins script scrolls one more row for the index's new line.
Co-Authored-By: Claude Opus 5.5 <[email protected]>
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The sam-style calling convention for mvzr (a line per haystack, . made
[^\\n] only when a pattern names \\n) lived in addr.zig; normal mode's s
and S called mvzr over the raw selection, where ^ meant the selection's
start and . crossed lines. src/regexp.zig now holds the one Regex
(compile, find) both call, and fs.zig and pardes.zig drop an unused mvzr
import. hxdiff and hxparity stay at their known 17 and 6 mismatches, none
of them regex cases.
Co-Authored-By: Claude Opus 5.5 <[email protected]>
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A first-time user through a mount could not find how to get a terminal,
read path++text as a typo, did not know > on data replaces only the
addressed range, which regexps addr takes, that lock fails fast, what
errors is, where an unknown exec word goes (typed into a terminal, not an
error), that new panes are +New and a column's last pane leaves one, or
which 9ns mount other processes can see. The README (still 45 lines),
docs/fs.md and the skill now say.
Co-Authored-By: Claude Opus 5.5 <[email protected]>
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the reason
Through a mount every refusal reads as Invalid argument, so a shell user
could not tell a missing regexp match from a bad ctl word. Every write or
truncation the tree refuses or that fails now adds err <serial|-> <file>:
<why> to /log. No per-pane readable error file: acme's errors only takes
text, and one stream is simpler to watch.
Co-Authored-By: Claude Opus 5.5 <[email protected]>
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The log said new N / and later del N <cwd> for a terminal, with no rename
in between, though a terminal is named by its directory. setCwd now logs
the rename once the pane has been announced. A terminal's ctl line gave
body length 0 while its body reads its history; it now counts that
history (without keeping a copy).
Co-Authored-By: Claude Opus 5.5 <[email protected]>
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A contended lock parked until the holder unlocked, but through a kernel
or FUSE mount the kernel serialises writes to one file, so the parked
lock held up the holder's own unlock and close on that ctl, and the two
deadlocked. acme's qlock blocks; here the second lock is refused at once
with file in use (EBUSY) and the client retries, and nothing parks on
the lock any more.
Co-Authored-By: Claude Opus 5.5 <[email protected]>
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answering busy
A new terminal's shell takes tens of milliseconds to draw its first
prompt, and a run written meanwhile answered busy, so a script's first
command was lost, while pty/status said busy 0. A line written before the
first prompt now waits for it and is sent then (a respawn in between
keeps it waiting for the new shell), and pty/status's third field says
what a run would be told: busy while a command runs or text is typed at
the prompt, not before the first prompt.
Co-Authored-By: Claude Opus 5.5 <[email protected]>
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failed addr leaves no address
addr's regexps ran mvzr over text[from..hi]: ^ and $ anchored only at the
slice's ends, . matched newlines, the search never wrapped, and every
failure read as bad address syntax. The regexps stay mvzr's, called the
way sam searches (editors/acme/regx.c): one line per haystack, so ^ and $
fall at line boundaries and . never crosses a newline; a pattern naming
\\n runs over the whole text with its . made [^\\n]; /re/ wraps unless
limit is set, and ?re? takes the last match before the range. The ceiling
(mvzr's first alternative, not sam's longest) is documented. A failed
address says why (no match for regexp, address out of range, bad regular
expression), and a failed write to addr leaves no address, so data and
xdata refuse until the next good one instead of writing at the old range.
Co-Authored-By: Claude Opus 5.5 <[email protected]>
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A shell's echo NEW > data opens data with OTRUNC, and truncate() spliced
the whole body away before the write replaced the addressed range: a
five-byte replacement erased a buffer. data and xdata hold what addr
names, so truncating one now deletes that range and nothing else; > on
data replaces the range and : > data deletes it, and only truncating
body clears the buffer.
Co-Authored-By: Claude Opus 5.5 <[email protected]>
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Kill in pardes is acme's Exit, not acme's Kill, which only stops
commands; the README, docs/fs.md and the skill now say so where the root
ctl lists it. Delcol, Collapse and the other column words take a pane's
ctl and act on that pane's column; Newcol and Joincol are the root's.
Co-Authored-By: Claude Opus 5.5 <[email protected]>
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in the root listing's natural place
A write to /focus leaves a folded pane folded, as rio keeps current apart
from unhide; while a column or workspace tag has the keyboard no pane
does, so /focus reads empty and every pane's ctl says notcurrent (an
empty read also no longer answers stale staged bytes). focus, ctl and
commands now list after status, and the discovery test checks the root
as a set rather than by position.
Co-Authored-By: Claude Opus 5.5 <[email protected]>
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Co-Authored-By: Claude Opus 5.5 <[email protected]>
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argument is refused before anything runs
A ctl write failed only on a malformed line: Mount x reported its error
in the editor while the write succeeded, and a bare Mount failed only as
it ran, after earlier lines of the write. acme's ctl answers a command's
error (editors/acme/xfid.c:700). Builtins now declare requires_arg beside
takes_arg (settings: those with a value to set), and the check refuses a
bare one as wrong #args before any line runs; while a ctl runs, the first
error a builtin reports fails the write, quoted with its line, and the
prompt refusal quotes its line too. Docs say what a failure mid-write
leaves done.
Co-Authored-By: Claude Opus 5.5 <[email protected]>
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A script could learn the builtin words only from source or the Help
window. /commands is generated from the registry: one line per builtin,
Word or Word arg, then root or pane for the ctl that takes it, so it is
always this build's own list.
Co-Authored-By: Claude Opus 5.5 <[email protected]>
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and reads the settings, a pane's ctl its own
Every builtin could only be clicked, or written to exec, and the settings
could be read only as the Config window's prose. acme keeps window verbs on
a window's ctl, and webfs and upas/fs keep session settings on a root ctl.
Each builtin now declares its scope (scope = .session; settings are all
session, the rest pane), read by the registry. The root /ctl takes session
builtins and reads every setting in the words a write takes, so its read
written back changes nothing (panel and scene effects now take on/off like
the toggles, to make that true); a pane's ctl takes the pane's builtins
beside get, lock and unlock. Writes are checked whole and refused in Plan
9's ctl words (unknown control message "X", wrong #args ...), which 9ns
now maps to EINVAL (cloud9 re-pinned at a8c7a715). A builtin that would
prompt for its argument fails the write instead, and a refusal is answered
at once, not after the frame.
Co-Authored-By: Claude Opus 5.5 <[email protected]>
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ctl says whether it is current
Scripts had no way to ask which pane has the keyboard or to give it one.
rio answers both through a window's wctl: its read ends with current or
notcurrent, and a write of current takes the keyboard (rio(4)). A pane's
ctl line now ends the same way, and since there is one keyboard for the
whole tree, /focus reads the focused pane's serial and takes a serial to
move the keyboard there, off any header that had it; a serial no pane has
fails with "no such window". fs-bench's stale readdir check is fixed too.
Co-Authored-By: Claude Opus 5.5 <[email protected]>
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Designed by two agents (a designer and an adversarial reviewer) and not yet
implemented; implementation starts in stages, each its own change.
Co-Authored-By: Claude Opus 5.5 <[email protected]>
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The tag's computed path, dirty marker and page were out of the keyboard's
reach: its cursor lived in the text after them. It now lives in the tag as
shown, as in acme where the name is ordinary text at the start of the tag, so
`0` goes to the line's start and motions select and yank the path. The path
stays read-only: an edit that would change it is refused and leaves the
cursor where it was, and typing into a file's path drafts a new name as a
click on it does. Sync moves the tag's positions when the prefix changes
length, so a rename or the dirty marker still never moves the cursor off the
text after it.
Co-Authored-By: Claude Opus 5.5 <[email protected]>
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A tag is a text like the body, so selecting on a regex and piping act on the
text they are pressed in: a prompt records the text it answers for, the tag
keeps the keyboard while it is typed, and a header's prompt goes on the active
pane's band. `/` still searches the body from anywhere, as acme's Look from a
tag searches the body.
Co-Authored-By: Claude Opus 5.5 <[email protected]>
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The workspace and column tags hold nothing but commands, and before they
became texts Enter on one of them ran it: Enter on Newcol made a column.
Since then Enter looked the word up, as it does in a pane's tag, which only
searched for it. It runs it again, and the header lets go of the keyboard
first as a pane tag does.
Co-Authored-By: Claude Opus 5.5 <[email protected]>
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Truncating the tag file replaced its text without an undo point, so the
cleared text was gone for good. It is recorded now like a typed edit, the
history is kept, and docs/fs.md says so.
Co-Authored-By: Claude Opus 5.5 <[email protected]>
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With tags reduced to Texts, what is left of them is the computed prefix, the
default and saved tails, entering and leaving a tag and the headers: that goes
to tagline.zig, as acme keeps the tag half of a window in wind.c. Tag and
header drawing moves next to body drawing in body_layer.zig, and the tag hit
helpers go to tag_layer.zig with the Hit they read, where sameCell now also
tells the lines of a taller tag apart. The docs describe the tag as a Text.
Co-Authored-By: Claude Opus 5.5 <[email protected]>
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A search, pipe or Save prompt wrote its marker and answer onto the end of
the tag, so the tag's cursor, its selection, its 9P writes and a prompt
abandoned by a click all shared one buffer: the abandoned text stayed in
the tag and a 9P write landed inside the prompt. The answer is now its own
Text on the pane, typed in insert mode and shown on the notice band where
it was already drawn, and the tag never holds any of it.
Co-Authored-By: Claude Opus 5.5 <[email protected]>
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Documentation only, no code change: README's reading order and layout,
docs/design.typ's paragraph on where pane kinds and editor parts live,
docs/helix-keys.md's code map (normalInput and the executors now in
normal.zig and edit.zig, insertTab in edit.zig), docs/open-questions.md
(execute and ttyForDir in exec.zig), and the comments that named pardes.zig
for fold, Cell, takesCommandLine and runBuiltin (tools/gen_themes.zig,
themes/helix.zig, detached/wire.zig, host_io.zig, lsp_zls.zig).
docs/design.pdf is a retained fixture and is not regenerated.
Co-Authored-By: Claude Opus 5.5 <[email protected]>
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shut down
The held read is now kept by the Ticket cloud9's Conn.hold() gives its
park and answered through Conn.answerWith(), which makes the answer only
while that very park still waits, instead of walking the engine's slots
by tag; pardes no longer reaches into the engine for it. A second read on
an open whose read is held fails with file in use rather than sitting
parked where nothing answers it, and a read that waits with no open
record to hold it is logged and asserted on. A read on an event or
pty/data open whose pane closed answers acme's "window shut down"
(editors/acme/xfid.c:1005). The pane keeps its run's and its lock's open
handles, checked through openOf on use, not record indices. Docs: lock
from a shell needs a held fd, and a command that clears the screen may
read as cut.
Needs cloud9 zvuqvnzy (cca47d63), which adds Conn.hold, waiting and
answerWith; build.zig.zon still pins 82d8152c until that is pushed and
re-pinned.
Co-Authored-By: Claude Opus 5.5 <[email protected]>
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A clear or reset while the command ran, a start or end mark that came on
the alternate screen, or a garbage end pin read as a complete answer;
now any of them, like a start that scrolled out, answers exit N cut.
The output is read from at most output_rows rows above its end instead
of the whole history on the editor's thread (cut if that clips it), a D
with no status answers exit ? rather than exit 0, and running out of
memory answers error out of memory rather than cut.
Co-Authored-By: Claude Opus 5.5 <[email protected]>
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A client doing an edit of several writes to addr and data had no way to
keep another client's from landing in between. acme's window ctl takes
lock and unlock for this (editors/acme/xfid.c:603-611): a qlock that
blocks a second locker, owned by the fid that wrote it and given up when
that fid is clunked, binding only clients that ask. pardes does the same:
the open's record holds it, a second lock parks until unlock, close or
the pane closing, and no other write is refused for it.
Co-Authored-By: Claude Opus 5.5 <[email protected]>
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Snapshots (and /log's cursor), runs, and the reader_handle constants for
event and pty/data each reused the open handle and each validated
handle and node on its own. Now p.fs.opens is one table of 64 records,
each the node it was opened on and a tagged union of what it holds, like
lib9p's per-fid aux and acme's Fid (editors/acme/dat.h:373-385): one
lookup (openOf), one release, ENFILE when full. A held read lives in
its open's record, so it goes with the release. Opens that hold nothing
answer handle 0 and take no record.
Co-Authored-By: Claude Opus 5.5 <[email protected]>
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A following log, event, pty/data or a pty/run before its answer used to
answer .again and wait for a wakeAll, which only the parked-write path
asked for, so the band-aid had every queue push set turn.parked. Now the
core keeps such a read (ctlfs.hold) and, as the turn is given up after
anything that queued a record, ran a command out or closed a pane,
answers it on its own connection, the way factotum answers the log reads
it keeps and acme an event read. Only a read the engine still holds
parked is answered, because cloud9 tells the backend nothing of a
Tflush, so a flushed read spends no record.
Co-Authored-By: Claude Opus 5.5 <[email protected]>
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Co-Authored-By: Claude Opus 5.5 <[email protected]>
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and E.BUSY
The answer is now the header line (exit N, or exit N cut M when only the
last 64 KiB were kept, or exit N cut when its start scrolled out of the
history), then what the command printed: the screen text between its C and
D marks, which the marks handler pins so scrolling keeps them.
Also from review: a plain /log open honours its offset until follow is
written, so tail -n and less work; whitespace-only run lines are refused.
cloud9 is pinned at 82d8152c: 9ns keeps up to 32 requests in flight per
mount so a waiting read no longer freezes the rest of it, and E.BUSY
replaces the errno pardes spelled locally.
Co-Authored-By: Claude Opus 5.5 <[email protected]>
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/pane/<n>/pty/run takes factotum's rpc shape: write one line on an open,
read the answer on that same open. The answer is exit N once the command
ended and the shell is back at a prompt; busy at once when a command runs,
text is typed at the prompt, or the shell has not drawn its first prompt;
error not run when the shell refused the line without running it (fish on
a syntax error keeps it on the prompt, so it is taken back with Ctrl-U);
error shell gone when the pane closes or its shell is replaced; error no
prompt marks for a shell pardes could not instrument.
The end comes from the shell's OSC 133 marks. ghostty parses D's exit
status and drops it, so the stream now runs through a handler that wraps
ghostty's and follows prompt -> input -> running -> done. The marks pardes
injects into bash and fish carry aid=pardes and only those count, so fish
4's own marks (which doubled ours), a nested shell's, and a stray 133;D in
printed output are ignored.
Checked end to end against real bash and fish: false, exit 7, a syntax
error, sleep, busy while running, and the pane closing mid-command.
Co-Authored-By: Claude Opus 5.5 <[email protected]>
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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 SDL shell shapes words with HarfBuzz, so a font's `->` and `!=` draw as
ligatures, and there was no way to have the plain glyphs back short of
changing font. `Ligatures` is a toggle, on by default; off, no cell goes to
the shaper and every cell draws its own glyph, exactly as a font without
ligatures does.
It exists only where it means something. A new `ligatures` capability, true
for the gui shell alone, gates it like Font and WindowOpacity are gated: it is
not a builtin elsewhere, has no leader path, and Config does not list it,
rather than print a row the TTY could never change. macOS draws CoreText
ligatures of its own, but nothing there reads the setting, so it stays off
there. The table check that kept every toggle unconditional now lets the
ligatures toggle, and only it, carry a capability, and requires that it
carry `ligatures`; every other setting's rule is as it was.
The gui keeps the setting beside its text caches, which were resolved under
it: when the core's value changes, the per-codepoint cells (which record
whether a cell is shaped) and the shaped words are dropped, and the frame the
toggle asked for draws every cell again. The atlas keeps its glyphs: plain
ones draw either way, and a ligature's strip is reused when it comes back.
Co-Authored-By: Claude Opus 5.5 (1M context) <[email protected]>
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first
A message fell in on t*t, an ease-in: it hung near its start for the first
frames and was still moving at its fastest when it hit the row, a sixth of a
row in its last frame. It now decelerates into place with an ease-out cubic,
slide = -(1-t)^3: a quarter of the way in the first frame, and the last
frames only settle it. There is no overshoot. At a row's height and the
dozen frames of the 180 ms fall, a follow-through is a pixel or two, which
reads as a jitter rather than a bounce. MessageFall keeps its 180 ms: the
ease-out puts the chip where it is going within about 100 ms.
The colour leads the motion: alpha = 1 - (1 - min(1, 2t))^2, whole by half
way, so what lands is already legible. The SDL shell used to show the chip
solid while it slid and fade it only on the way out; it now fades it up with
the same alpha, and the rule under a chip carries the chip's fade (a new
TagLayer.fade) instead of standing solid while the chip comes or goes.
The dissolve was an ease-out, (1-t)^2: it lost a tenth of its colour in the
first frame and spent its last frames nearly invisible. An exit eases in
instead, alpha = 1 - t^2 over the same 300 ms: it lets go gently and leaves
faster and faster. t is now counted to the last frame, so that frame shows
it gone rather than it blinking out from 0.3%. 1 - t^3 was the other
candidate; in captures it held the chip nearly untouched for half the
dissolve after the linger had already held it, then dropped a sixth of its
colour a frame, which reads as a pop. It stays in place: the lines stacked
around it do not move, and a drift would read as it leaving its row.
The test pins the shapes: a fast first step into the row, never past it,
solid by half way; a dissolve whose first drop is smaller than its last and
which ends at exactly nothing.
Co-Authored-By: Claude Opus 5.5 (1M context) <[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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their cells
The SDL shell rasterized every cell by its own codepoint, so a font's `->`,
`!=` or `<=` ligature never appeared. Text is now shaped with HarfBuzz 11.0.0,
built from source like FreeType: a lazy build.zig.zon dependency (the tarball
Ghostty pins) compiled only for the gui shell, its FreeType integration
linked against the freetype package, so the binary carries no system
HarfBuzz or FreeType and a tty build never compiles it.
Shaping turns on only the font's ligature features (liga, calt, clig, rlig,
rclt); composition, local forms and fractions stay off, so a cell draws either
its nominal glyph, as it always did, or part of a ligature. A glyph no lookup
of those features covers cannot change, so its cell is resolved alone, and
that resolution is cached by codepoint: in a font without ligatures (Adwaita
Mono) no cell is ever shaped, and the pipeline draws pixel for pixel as
before.
A cell whose glyph a ligature could replace is shaped with its word: the
cells between spaces that share a decoration and a role. A word ends either
side of the cursor, block or bar, so the cell being edited shows its own
character (Ghostty's rule), and inside f|i, f|l and s|t, whose typographic
ligatures do not belong on a grid (Ghostty again). Colours never end a word:
a ligature spans a syntax colour change or a selection edge. A codepoint the
primary font lacks shapes in the fallback face that has it. Taglines are not
shaped: they are drawn at two pitches, and a strip would not line up in one.
HarfBuzz only chooses glyphs; the grid places them. A substituted glyph whose
ink reaches over neighbouring cells that draw nothing of their own (the
spacer glyphs of Fira Code-style fonts such as Maple Mono, or the cells a
merged ligature cluster swallowed) claims them: it is rasterized once as a
strip that many cells wide, and each cell samples its own slice, so
selection, the cursor and per-cell colours work unchanged. Anything the grid
cannot place (several glyphs in one cell, a positioned mark) keeps its
nominal glyphs.
A frame must not pay for this. A shaped word's atlas slots are cached by its
text (checked against the stored text, not just its hash), so a frame costs
one lookup per word and a compare for the rest of the word being walked.
The atlas is keyed by (face, glyph, role, decoration, lead, span), packed into
64 bits so a lookup hashes one word; ASCII glyph ids are a table, and a
face's HarfBuzz state is made when it is first asked about a glyph. Measured
with the latency trace, whose F line now also carries the submit time (CPU =
submit - present entry), in 10 interleaved rounds against main with an A/A
pair, at 160x50 cells: with Adwaita Mono every scenario (idle, scrolling,
typing, terminal output) is as fast or 1-3% faster, and the first frame and
time to first paint are unchanged. With Maple Mono, ligatures cost the first
frame about 0.8 ms (HarfBuzz setup and shaping the screen) and scrolling new
text about 1-2%.
With it the codepoint raster path is gone: grips look up their glyph and
stay centered, since a grip is not text. ui_font_scale_for_height, an
identity kept as a "size token", is removed (px is the size everywhere),
ui_font_has_glyph becomes ui_font_glyph, and the space slot is simply the
first, cleared cell of the atlas rather than a rasterized space. CellStyle.ul
gets an explicit u3 tag so a decoration fits in the packed keys.
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 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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