Supported CLI paths

The path and control tables are generated by node scripts/supported-path-matrix.mjs --write. Set CARVE_RS_BIN to the matching Rust binary when automatic discovery finds another build. Each path checks a marked strong span and an empty input control. yes means both commands exit successfully and the target retains the marker with its expected form. partial means a command runs but an assertion fails; no means a command fails. The inventory, known gaps and focused check counts are audit notes recorded at the pinned commits.

Engine commits: JavaScript 94fd3bb1, PHP 162f1c69, Rust bf67f3c6. The script checks each engine artifact against the hashes in the growth data and refuses other commits until the controls and known gaps are reviewed. The Rust growth measurements used a debug build.

Tracked checkout status: JavaScript M spec, PHP M tests/spec, Rust M tests/spec. Only spec submodule checkouts differ from their pinned gitlinks.

Source	Target	JavaScript	PHP	Rust
carve	html	yes	yes	yes
carve	markdown	yes	yes	yes
carve	plain	yes	yes	yes
carve	ansi	yes	yes	yes
carve	carve	yes	yes	yes
carve	json	yes	yes	yes
html	html	yes	yes	yes
html	markdown	yes	yes	yes
html	plain	yes	yes	yes
html	ansi	yes	yes	yes
html	carve	yes	yes	yes
html	json	yes	yes	yes
markdown	html	yes	yes	yes
markdown	markdown	yes	yes	yes
markdown	plain	yes	yes	yes
markdown	ansi	yes	yes	yes
markdown	carve	yes	yes	yes
markdown	json	yes	yes	yes
djot	html	yes	yes	yes
djot	markdown	yes	yes	yes
djot	plain	yes	yes	yes
djot	ansi	yes	yes	yes
djot	carve	yes	yes	yes
djot	json	yes	yes	yes
bbcode	html	yes	yes	yes
bbcode	markdown	yes	yes	yes
bbcode	plain	yes	yes	yes
bbcode	ansi	yes	yes	yes
bbcode	carve	yes	yes	yes
bbcode	json	yes	yes	yes
ast-json	html	yes	yes	yes
ast-json	markdown	yes	yes	yes
ast-json	plain	yes	yes	yes
ast-json	ansi	yes	yes	yes
ast-json	carve	yes	yes	yes
ast-json	json	yes	yes	yes

Failing controls

None.

Render loss control

A raw HTML block renders in HTML, reports raw-format-dropped in plain text, and is refused by strict plain text rendering.

Control	JavaScript	PHP	Rust
Raw block and strict loss gate	yes	yes	yes

AST controls

Control	JavaScript	PHP	Rust
Heading and paragraph source lines	yes	yes	yes
Malformed AST refusal without output	yes	yes	yes
Excess AST depth refused without output	yes	yes	yes

Formatter control

A heading and a malformed link both reach a stable canonical form on the second pass.

Control	JavaScript	PHP	Rust
Canonical fixed point	yes	yes	yes

Import confidence controls

A plain Markdown literal reports exact confidence. A marked BBCode construct reports the unsupported assessment as fallback. The shared report schema calls the middle confidence level inferred.

Control	JavaScript	PHP	Rust
Exact and fallback report states	yes	yes	yes

Roundtrip export controls

A star bullet is exported and imported again. HTML must carry its marker. Empty input is the negative control.

Target	JavaScript	PHP	Rust
HTML	yes	yes	yes
Markdown	yes	yes	yes

Render feature controls

Each feature uses a Carve document carrying the marker. The negative control is empty input. These checks establish that the marked content reaches each target; they do not assert target-specific structure.

Feature	Target	JavaScript	PHP	Rust
table	html	yes	yes	yes
table	markdown	yes	yes	yes
table	plain	yes	yes	yes
table	ansi	yes	yes	yes
table	carve	yes	yes	yes
table	json	yes	yes	yes
caption	html	yes	yes	yes
caption	markdown	yes	yes	yes
caption	plain	yes	yes	yes
caption	ansi	yes	yes	yes
caption	carve	yes	yes	yes
caption	json	yes	yes	yes
abbreviation	html	yes	yes	yes
abbreviation	markdown	yes	yes	yes
abbreviation	plain	yes	yes	yes
abbreviation	ansi	yes	yes	yes
abbreviation	carve	yes	yes	yes
abbreviation	json	yes	yes	yes
math	html	yes	yes	yes
math	markdown	yes	yes	yes
math	plain	yes	yes	yes
math	ansi	yes	yes	yes
math	carve	yes	yes	yes
math	json	yes	yes	yes
literal	html	yes	yes	yes
literal	markdown	yes	yes	yes
literal	plain	yes	yes	yes
literal	ansi	yes	yes	yes
literal	carve	yes	yes	yes
literal	json	yes	yes	yes

Import feature controls

Each case imports the marked source and renders the result to HTML. Empty input is its negative control. A yes checks retained text and the relevant attribute, table, quote or denied URL shape. The focused contract checks cover detailed reports.

Control	JavaScript	PHP	Rust
HTML attributes	yes	yes	yes
HTML denied URL	yes	yes	yes
HTML empty mark	yes	yes	yes
HTML table	yes	yes	yes
HTML nested containers	yes	yes	yes
BBCode URL attribute	yes	yes	yes
BBCode URL render denial	yes	yes	yes
BBCode empty mark	yes	yes	yes
BBCode table	yes	yes	yes
BBCode nested quote	yes	yes	yes

Public path inventory

Path or option	JavaScript	PHP	Rust
CLI import: HTML, Markdown, Djot, BBCode	yes	yes	yes
CLI input: Carve, AST JSON	yes	yes	yes
CLI output: HTML, Markdown, plain, ANSI, Carve, AST JSON	yes	yes	yes
HTML import modes: safe, semantic, roundtrip	yes	yes	yes
Import fidelity report and loss gate	yes	yes	partial (source path)
Render loss report, strict gate and roundtrip export	partial	partial	partial
Canonical formatter	yes	yes	partial at pin (fixed after pin)
Library AST ingest and serialization	partial	partial	partial
Library callbacks and streaming render	partial	partial	partial
WASM entry point	no (none advertised)	no (none advertised)	no (none advertised)

A partial inventory cell means an entry point is exposed but these probes cover only part of its contract. The CLI grid above checks every source and target pair; focused checks cover the listed behaviors.

Construct gaps at the audited commits

Control	JavaScript	PHP	Rust
128 Markdown native destinations	128/128	67/128, fixed after pin	78/128
Canonical formatter fixtures	passed	passed	4 table cases differ, fixed after pin
Markdown literal report location	passed	passed	missing line:1

Focused checks at these commits

• The import report comparison passed 82 cases across the three engines, including HTML modes and reported loss rows.
• Seven degradation claims passed across the engines for interactive content, captions and math.
• AST ingest compared 2,618 documents across the engines with no observed difference.
• The canonical formatter check passed 88 of 92 fixtures across all three pinned engines. The four Rust table disagreements were fixed after the pin.
• Focused streaming, source position and AST depth suites passed: JavaScript 25 tests, PHP 33 tests and Rust streaming 7 tests.
• The AST and formatter controls above cover one position pair, a malformed root, excess depth and a malformed link.
• Library callbacks and WASM host behavior remain outside the CLI grid. Streaming is covered by the focused suites.