| Commit message (Collapse) | Author | Age |
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An image stb_image could not read opened as an empty image pane, the look succeeding. The bytes' header is now checked at the look (stbi_info_from_memory), and one that is no image it reads fails the look, look: <path>: not an image pardes can read, making no pane.
Co-Authored-By: Claude Opus 5.5 <[email protected]>
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The painters of a pane's body and tag (renderBody and its selection,
gutter, syntax, ANSI and wrap-marker passes; paintPaneTag; paintHeaders;
renderPane; the image and PDF grid paths) take the Surface they paint as a
parameter. The body layer and the tag layers paint straight into their own
temporary surfaces, and the std.mem.swap of p.surface around those calls is
gone. No behaviour change.
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Pure move: the body of `pub const Image = struct { ... }` now sits at the
end of image.zig, dedented, under a "the image pane" banner, so the image
thing (decoding, glyph art, and the pane that shows it) is one file. Its
nine `image.X` self-references lose the prefix; image.zig gains the four
imports the pane code uses. panes.zig keeps `pub const Image =
@import("image.zig");`, so `panes.Image.x` callers are unchanged.
image.zig joins the embedded source list, since the pane code left
panes.zig which was on it.
Co-Authored-By: Claude Opus 5.5 <[email protected]>
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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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`-Dplatform=p4 -Dtarget=riscv32-freestanding` emits a single freestanding OBJECT
exporting a seven-function C ABI, not an executable. The board's toolchain
(../05-zig-p4) owns `_start`, the linker script and the UART driver and links this
in. The seam is bytes rather than types, so neither side can accidentally depend
on the other's internals, and a signature that drifts fails at link time.
The serial line is the whole of the I/O. `src/p4.zig` drives vaxis unchanged over
it: the renderer is a byte writer and `queryTerminalSend` is a byte writer, so the
terminal emulator on the host answers the capability handshake and the firmware
sees a real terminal. Measured going out over the wire on attach: alt screen,
in-band resize, cursor report, kitty keyboard, kitty graphics, DA1.
THREE WORDS EXIST ONLY HERE. `src/board_memory.zig` implements `Peek`, `Poke` and
`Hexdump`, gated on `builtin.os.tag == .freestanding and !isWasm()` - derived from
the TARGET, because they are a property of running with no OS under you rather
than a product option, and because wasm is freestanding too and is exactly what
must be excluded: in a browser an address is an offset into the linear memory this
editor's own heap lives in. Every access goes through `*allowzero volatile`: a
peripheral register is not memory, and address 0 is an ordinary unmapped address
on this bus. One 4 KiB cap per command, set by the console rather than the memory -
an unbounded dump would wedge the only console the board has for eleven hours.
Measured on ESP32-P4 rev v1.3 silicon, driven from a host terminal:
Peek 0x501101a4 0x0e63ce71, then 0xaeaa6919 on a second read - the
RNG register, so the volatile loads are not folded
Poke 0x5011002c 0xdeadbeef LP_STORE0; a later Peek returned 0xdeadbeef
Hexdump 0x5011002c 32 16 bytes a row, hex columns and an ASCII gutter
Peek 0x50110001 `peek: MisalignedAddress` on the message row
That last line is the one that matters. A misaligned 32-bit access traps, and a
trap in firmware is a watchdog reset that takes the session with it, so the check
that turns it into a message is the reason the file is hand-written rather than a
generic reader.
BARE METAL BOOTS AN EMPTY OUTPUT BUFFER. Every other boot layout in `init` makes a
shell, and on this platform that is not a preference but an impossibility: nothing
to fork, no pty to give a terminal pane. Booting one anyway produced precisely what
that describes - a pane whose tag ends in `Filter`, no gutter, no buffer, and every
keystroke vanishing into the Fallback's silent pty. An output buffer is also what
the platform's own words want, since Peek, Poke and Hexdump each fill one.
Sized for the board rather than for a desktop:
* `allocators.zig` gains a p4 tier that is ALL fallback - every capacity is zero,
so each arena spills immediately to the 384 KiB heap the firmware hands over,
and no megabyte-shaped static reservation lands in `.bss`.
* `source_manifest.zig`'s allowlist is EMPTY on p4. The table is ~0.95 MiB of
rodata against a 1.5 MiB flash partition; the firmware's filesystem is the
serial host's, through the Host vtable.
* The grid is clamped and the clamp is measured, not guessed: every cell is paid
for four times (vaxis Screen + InternalScreen, pardes Surface + previous_cells),
so 40x12 fits and 80x24 exhausts the heap during `Pardes.init`.
* `Vaxis.resize` deinits both screens before allocating replacements, so a failed
resize leaves vaxis rendering nothing. The p4 shell keeps the previous geometry
on failure instead of leaving a half-applied one.
Also here: `output_pane_integration_test.zig` had an exhaustive switch over
`Platform` that adding `.p4` left unhandled, which broke `zig build unit-test`
outright - the native test binary is the one consumer no platform build compiles.
346 tests pass again.
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test/ (snapshot parity harness + 18 frozen goldens). One sans-IO core, vaxis tty + SDL3 GPU native + wasm web shells, 18/18 parity with the purged prototype, 7.6k lines vs 12.1k. Fix: gui shell pre-sized the core at init so the greet-releasing resize never fired (blank panes until first interaction); live sessions now init at defaults and get the real grid as a resize event (the shell contract, documented on Options).
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