Elamur Groupantsprag-frames-md-text
The groupant beside prag/src/frames_md.rs in the Mova repository: what the code computes, what it never does, how to go back from its outputs, its invariants, cost and checks.
Facts
Implementation material. A Mova code model describes this code at one source revision: partial models, finite checks and their stated scope. It is not a reviewed general exposition, and its labels are shown as written, never raised.
Components
| component | label | where |
|---|---|---|
| approximant | partial source model | forward |
| ast | partial | ../syntax.json |
| composition | partial source model | composition |
| cost | partial source model | cost |
| descriptant | partial source model | epoch-memory |
| invariant | partial source model | invariant |
| tests | bounded native and inspected | ../model.md#evidence |
Obernants
The typed relations around the forward model: the behaviour complement (what the code never does), the reverse reconstruction (every input compatible with an output) and specialised views.
| id | type | label | where |
|---|---|---|---|
prag-frames-md-text-behavior-complement | behavior_complement | partial source model | behavior-complement |
prag-frames-md-text-reverse-reconstruction | reverse_reconstruction | partial source model | reverse-reconstruction |
prag-frames-md-text-escape-image | image_constraint | partial source model | escape-image |
prag-frames-md-text-prefix-precedence | precedence_partition | partial source model | prefix-precedence |
Model text
Subject: prag/src/frames_md.rs SHA-256 023ca98fa461e9d1545915abd8071ecb542cc61999bbf5a054b712e5edf9b5e3. All entries share this exact revision. Status: partial source-derived relations, finite native evidence for pure seams, source inspection for effects. Domain: finite supplied inputs under the stated resource/arithmetic premises. Exclusions are inner source-derived families, not a complete behavioral complement. Reverse relations retain compatible antecedents but no complete inverse solver is implemented.
forward
t prefixes backslash exactly for backslash, backtick, star, underscore, square/angle brackets, pipe and hash, copying other scalars. phrase orders possessor-or-determiner, text-or-id, modifiers, then conjunctions. Recognized possessive pronouns avoid apostrophe-s. ent appends identity only when a resolved pronoun and rendered phrase differ from id ignoring ASCII case. tam_words expands selected dot-separated tags if tam.read.
behavior-complement
Universe: strings/entities/Frames paired with proposed display strings. Exclude dropping a nonalphabet scalar, failing to escape an alphabet scalar, emitting a determiner alongside a possessor, or emitting TAM while read=false. Newline passthrough is allowed.
reverse-reconstruction
t is injective on scalar strings and its image admits escape decoding. phrase loses attrs/appos/and fields and can collapse different text/id/prefix splits. ent loses pron values when the annotation is suppressed; empty TAM admits unread or empty readable tags.
invariant
Character order survives escaping. Possessor wins over determiner. Recursive Vec ordering persists. Entity nesting must be finite and stack-manageable.
cost
t is linear in bytes. phrase costs sum of recursive subtree byte sizes because ancestors copy descendants; stack depth follows entity nesting. No depth cap is enforced.
escape-image
Escaped output is not idempotent; t(t(s)) can add escapes. The native family enumerates 169 pairs including Unicode and the full ten-character escape alphabet.
prefix-precedence
Partition by poss present, else det present, else neither. Changing det with poss fixed cannot alter the prefix. Fixtures cover named/pronoun possessors, modifiers and coordination.
composition
phrase constructs raw text before ent escapes it; ent separately escapes an identity annotation. table escapes tam_words once. Dependency helper semantics are source-inspected.
epoch-memory
Wave14 first modeling epoch, 2026-10-30: preserves rendering and tuning selection semantics. Two public pure tuning seams are now actual production-path calls. Six rendering tests and four tuning tests record field loss, tolerance/duplicate behavior, strict selection thresholds and domain limits. No bug repair or speed claim. Existing semantics retained include newline passthrough, first key/last MId collision, zip truncation and unchecked score arithmetic. Evidence is finite; no parser, teacher, filesystem corpus, journal-backed tune, optimizer training or GPU execution.
limitations
Partial syntax binds source bytes; macro bodies remain opaque and semantic AST is absent. Native/structural checks are not universal proofs or full-system coverage. No approximation error budget or automatic substitution is claimed. File evidence distinguishes executed pure paths and inspected effects.
This page in Markdown → https://md.groupants.elamur.ai/free/en/mova/prag/src/frames_md.rs.groupant/text.groupant/