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Consolidate pane, layout, memory and host code. Serve 9P by default over Unix sockets, with runtime mounts and optional TCP/QUIC transports. Remove FUSE and obsolete proof-of-concept examples.
Fix highlighting and terminal-history performance, expand differential and stress-test infrastructure, sort navigation results while preserving the next occurrence, add syntax-colored Braille minimaps, remove SPC-k, and document 9P interaction as a repository skill.
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A review of what this program does when the environment says no. The finding
that reframes it: there were almost NO panics on ordinary paths — the rule
already held — but there was a great deal of silence, and one case worse than
any panic.
SILENT DATA LOSS ON SAVE. `saveFile` marked the pane saved the moment it
QUEUED the effect, before any host had tried; `host_io.writeFd` returned void,
so a short or failed write was indistinguishable from a complete one; and
`writeFileBytes` returned true regardless. A save to a read-only file, or into
a directory removed under the pane, therefore cleared the tag's ` *` and posted
nothing — and `Del` makes no dirty check, so the next click threw the edits
away with the screen saying they were safe. On a full disk it was worse: the
file is already `O_TRUNC`'d when `write` fails, so the message row said `saved`
over a file that had just been emptied.
Now: `writeFd` reports, `writeFileBytes` returns WHY (`PermissionDenied`,
`NoSpaceLeft`, `ReadOnlyFilesystem`, …) including a failed `close`, which is
where write-back filesystems report at all; the core marks the pane saved
around `perform` rather than at emit, which is also where the bytes are read;
and a host that could not write calls `Pardes.saveFailed`, which puts the
reason on the message row and takes the clean mark back. That is a CALL and
not a return value because host.zig enforces, at comptime, that a `push_`
method reaching every host in a fan-out cannot have one answer — the first
attempt at this changed the signature and the compiler was right to refuse it.
TWO PANICS ON AN ORDINARY KEYSTROKE, in look.zig's number scans. `v = v * 10 +
d` over caller-supplied digits, reached from `parsePathLine` and the `@pN` scan
— which every Look, every right-click and every n/N motion runs on whatever
word is under the pointer. A hash in a log, a CSV column, any output shaped
`foo:99999999999999999999`, and the editor died with "integer overflow". Both
saturate now, the same way acmefs.zig's address parser already did; a saturated
line is refused by `file_pane.open`'s `line <= total` and a saturated pane id
by `focusPaneLine`'s `id < MAX_PANES`, so nothing addressable changes.
A BOOT FILE THAT WILL NOT OPEN joins the missing-name case in the `+Errors`
pane instead of taking the launch down: `pardes /root` resolves as a `.file`,
could not be read, and left `error: PermissionDenied` and a return trace.
`look.readFile` now says which errno it was, so the pane can say "permission
denied" rather than a word from the source code.
The tag-marker test drained no effects and passed anyway, which is exactly the
defect; it drains now.
Co-Authored-By: Claude Opus 5 (1M context) <[email protected]>
Claude-Session: https://claude.ai/code/session_016Q4RATpafkwahrovHQLKRf
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Three changes that all turned out to be the same shape -- a feature that
worked in one direction, or for one pane kind, and quietly did not in the
others.
CLIPBOARD. Every register write emitted set_clipboard, so deleting one
character threw away whatever the desktop was holding; multi-cursor yank took
the join's early return and emitted nothing at all, so the same key reached
the clipboard on one cursor and not on two. Nothing could READ the clipboard:
the SDL shell had no SDL_GetClipboardText anywhere in it, and the tty shell
never asked for OSC 52, so `p` from another application was dead in both.
Now it is helix's split. y/d/c/p/P/R and the acme chords are the DEFAULT
REGISTER and nothing else; the system clipboard is five words on helix's own
letters -- SPC y, SPC Y, SPC p, SPC P, SPC R -- spelled as builtins so they
land in Help and are executable like every other verb. The one exception is
the tag `y` chord, which still mirrors out because a tag is always insert, so
SPC cannot be pressed there, and copying the path out is the whole point of
the chord.
Reading is a new read_clipboard effect answered by an ordinary Event.paste, so
the round trip is honest about being one: SDL and NSPasteboard answer inside
the same drain, the browser answers a promise, and a terminal answers over
OSC 52 or -- far more often -- refuses. A refused read is a paste that does
not happen, and the request dies at the next keystroke rather than landing
minutes late in whatever pane is focused by then.
The tty shell also enables BRACKETED PASTE now and coalesces
paste_start..paste_end into one event. Before this a paste arrived as a flood
of individual key presses: plausible in insert mode, and in normal mode every
pasted character ran as a command.
n/N. They stepped the armed results buffer and immediately Looked each row, so
you could not walk past a hit without opening it. They are a MOTION now:
select the next look-able text, open nothing, and let Enter decide. What they
step is the largest whitespace-delimited run look.resolve can act on
(look.lookableSpan, wrapper punctuation peeled), over a RING of panes -- every
pane that has performed a look, most recent first, then the output buffers
that have not, newest first, and only if both are empty the pane in front of
you. N is the exact inverse of n, computed rather than remembered: both
directions ask the same question about the same spans and compare against the
column the walk parks on, so x presses one way and x back land exactly where
you started, pane boundaries and the ring's seam included.
A ring rather than a list with two ends because a shell's cursor sits at the
prompt, below everything it has printed, so a walk that could not come round
would have nowhere to go on the very first press -- which is the case n/N were
written for.
One motion everywhere, no pane-kind or buffer-kind special case. The only
thing a buffer may change is the GRAIN of what a step selects, and it does it
with one flag rather than a branch: output_pane.Traits.commands (renamed from
`executes`, which named one reader's behaviour rather than the fact) makes a
row select WHOLE, because a ThemeSel line is a word to run and has no path
inside it to pick out. `]d`/`[d` are not n/N -- they are helix's diagnostic
motions, their job is to ARRIVE, and they still reach searchStep.
THE TTY PROMPT. Leaving raw tty blanked the prompt row, and the command you
had typed at that prompt shares the row, so it went too -- a shell out of tty
read as output only. OSC 133 marks the row CELL by cell, so the two are
separable: config.tty_blank = .prompt cuts the prompt's own columns and leaves
the command, left-hugged at column 0 in line with the output under it rather
than in a bay of blanks. .prompt_and_input is the old behaviour, kept.
Because the row is now something you can put a cursor in, enterTty adds the
hidden prompt width back before asking ghostty to walk the shell's own cursor
to it -- the modal column on a cut row is short by exactly that much.
Verified: unit-test 186/186 (nine new), snap 87/87 (new ttyprompt.snap),
hxdiff 481 and hxparity 561 with 0 mismatches, tty and gui both build. And
against the real binaries rather than the harness: in a pty, SPC y emits OSC
52 carrying exactly the selection while plain y emits nothing, SPC p issues
the read and pastes the reply, and a bracketed paste of "dd..." inserts text
instead of deleting two lines. In a real SDL window, SPC y then SPC p round
trips through the system clipboard while the default register holds different
text. Setting tty_blank back to .prompt_and_input reproduces all 86 old
goldens byte for byte.
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