fix(parser): keep a token's literal name out of self-reference normalization

[cuinhellcat]

CR 111.1: the name a card gives the token it creates is that token's own literal name, never a reference back to the creating card — even when it embeds the creator's name.

mask_card_named_literal_spans already protects such spans. Its prefix parser enumerated the noun forms by hand (creature named , artifact named , …) and token named was not among them — the largest uncovered noun in the corpus:

noun before named	occurrences	masked before
card / cards	282	yes
token / tokens	75	no
creature / creatures	50	yes
permanent / permanents	16	yes

Unmasked, the self-reference strategies rewrote the name. Kher Keep's token became Kobolds of ~. Selenia's became ~'s Curse, which the trailing ~ → card-name expansion turned into Selenia, the Cursed Heart's Curse, and parse_token_name_clause then truncated at the injected comma to a bare Selenia.

Anchoring on the noun token covers the class in one rule: the token-creation template always writes it immediately before named, whatever type words precede it.

Token spans need different boundaries than card-filter spans — a token's name is followed by the clauses that define it in place (with "…", that's attacking, attached to …), while real card names contain those same words (Once More with Feeling). The prefix parser therefore reports a typed NamedLiteralKind rather than letting the caller infer it, and only token spans end at those clauses. A bare comma is deliberately not a boundary: token names carry one (Icingdeath, Frost Tongue).

Measurement

Full oracle-gen export before vs. after, all 35,795 cards — 9 differ, no others:

card	before	after
Selenia, the Cursed Heart	Selenia	Selenia's Curse
Kher Keep	Kobolds of ~	Kobolds of Kher Keep
The Rani	Mark of ~	Mark of the Rani
Ajani, Strength of the Pride	Ajani	Ajani's Pridemate
Koma, Cosmos Serpent	Koma	Koma's Coil
Koma, World-Eater	Koma	Koma's Coil
Goldmeadow Lookout	Goldmeadow Lookout Harrier	Goldmeadow Harrier
Llanowar Mentor	Llanowar Mentor Elves	Llanowar Elves
Smoke Spirits' Aid	description string only — the card stays Unimplemented

Counter-probe: with the two token named prefix entries removed, three of the four new rows fail. The fourth (normalize_token_boundaries_do_not_reach_card_filter_spans) is green either way — it pins the card-filter direction against a later widening and is not evidence for this fix; its doc comment says so.

Not covered

• The other naming shape, create <Name>, a … token: 9 cards still carry a corrupted name (Volo, Itinerant Scholar → ~'s Journal; Stangg and Stangg, Echo Warrior → ~ Twin; Icingdeath, Frost Tyrant; Tamiyo, Compleated Sage; Black Lotus Lounge; Elemental, My Dear; Li'l Giri Saves the Day; Windmill Slam). That span has no noun anchor and needs the article guard parse_named_token_preamble already owns in oracle_effect/token.rs; duplicating it here would put the same question in two places. Happy to do it as a follow-up in that module.
• Token names containing a comma are still truncated by parse_token_name_clause (Icingdeath, Frost Tongue → Icingdeath).
• The <noun> you control named <X> position is also unmasked (24 occurrences — the noun before named is control, e.g. Volo's second line). Left alone here; it belongs to the card-filter side, not this fix.

Notes

• cargo test --workspace is green except mtgish-import::manifest_coverage, which fails on 361e6f9a4 unchanged: it wants manifest entries for ResolvedAbility.selected_target_incarnations and SpellContext.parent_target_iteration_members. This branch touches one file, crates/engine/src/parser/oracle_util.rs.
• Related user-visible symptom: Kher Keep tokens never render — The kobold tokens for [[kher keep]] are always blank blocks. #5921 (closed) reported Kher Keep's tokens as blank blocks, resolved by the artless-token fallback tile in fix(client): render a name/text tile for tokens with no official art (#6156) #6214 — that tile renders the token's name, which for this card read Kobolds of ~.

🤖 Generated with Claude Code

Summary by CodeRabbit

• Bug Fixes
  • Improved parsing of named literals to distinguish token names from card-filter names.
  • Added support for singular and plural token forms.
  • Improved handling of token names containing creator names, full card names, defining clauses, and Unicode characters.
  • Preserved correct parsing for card-filter names containing token-related words.
  • Fixed token names created by activated abilities, including “Kobolds of Kher Keep,” while preserving self-references.

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📒 Files selected for processing (2)

• crates/engine/src/parser/oracle_effect/tests.rs
• crates/engine/src/parser/oracle_util.rs

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• crates/engine/src/parser/oracle_util.rs

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📝 Walkthrough

Walkthrough

Named-literal parsing now distinguishes token names from card-filter names. Token prefixes support singular and plural forms. Token spans stop before defining clauses, while card-filter spans retain existing behavior. Regression tests cover Unicode boundaries, creator names, defining clauses, and token names containing boundary terms.

Changes

Named literal parsing

Layer / File(s)	Summary
Literal classification crates/engine/src/parser/oracle_util.rs	The parser identifies token and card-filter literal kinds. It supports singular and plural token named prefixes.
Category-specific boundaries and validation crates/engine/src/parser/oracle_util.rs, crates/engine/src/parser/oracle_effect/tests.rs	Token spans stop before with, attached, and that clauses. Card-filter spans keep existing name and comma handling. Tests cover Unicode boundaries, token names, defining clauses, card-filter names, and Kher Keep token creation.

Estimated code review effort: 3 (Moderate) | ~20 minutes

Merge Risk: ⚪ Minimal · up to 50a60

The change narrowly corrects token-name normalization for a defined set of token-creation spans, with targeted validation showing only the intended outputs change. No actionable merge-blocking risk remains beyond normal checks and review.

Suggested labels: needs-maintainer

Suggested reviewers: matthewevans

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title clearly describes the main parser fix: preserving token literal names during self-reference normalization.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.

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Actionable comments posted: 1

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Inline comments:
In `@crates/engine/src/parser/oracle_util.rs`:
- Around line 1727-1733: Correct the Oracle rule citations in the parser
rationale comments near the token and card-filter span handling: use CR 111.4
for claims that the creating effect sets a token’s name, use CR 111.9 only for
the “create [name], a …” form, and describe span termination as Oracle grammar
rather than attributing it to CR 111.1. Apply the same citation corrections to
all referenced comment locations while preserving the parsing behavior.

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• crates/engine/src/parser/oracle_util.rs

[github-actions]

Generated for head 50a6067cb47bf04f84ab66aa5bf1e5e8c848575b.

Parse changes introduced by this PR · 9 card(s), 18 signature(s) (baseline: main df91e78e1672)

🟢 Added (9 signatures)

• 1 card · ➕ trigger/ChangesZone · added: ChangesZone (active in=graveyard, from=battlefield, to=graveyard, valid target=player, watches=self)
  • Affected (first 3): Selenia, the Cursed Heart
• 1 card · ➕ trigger/DamageDone · added: DamageDone (active in=battlefield, damage kind=combat only, valid source=self, valid target=player)
  • Affected (first 3): Koma, World-Eater
• 1 card · ➕ trigger/EntersOrAttacks · added: EntersOrAttacks (active in=battlefield, to=battlefield, watches=self)
  • Affected (first 3): The Rani
• 1 card · ➕ trigger/Phase · added: Phase (active in=battlefield, phase=upkeep)
  • Affected (first 3): Koma, Cosmos Serpent
• 1 card · ➕ ability/Token · added: Token (kind=activated, timing=sorcery speed, token=+2/+2 White Ajani's Pridemate (Creature Cat Soldier))
  • Affected (first 3): Ajani, Strength of the Pride
• 1 card · ➕ ability/Token · added: Token (kind=activated, token=+0/+1 Red Kobolds of ~ (Creature Kobold))
  • Affected (first 3): Kher Keep
• 1 card · ➕ ability/Token · added: Token (kind=activated, token=+1/+1 Green Llanowar Elves (Creature Elf Druid))
  • Affected (first 3): Llanowar Mentor
• 1 card · ➕ ability/Token · added: Token (kind=activated, token=+1/+1 White Goldmeadow Harrier (Creature Kithkin Soldier))
  • Affected (first 3): Goldmeadow Lookout
• 1 card · ➕ ability/for · added: for
  • Affected (first 3): Smoke Spirits' Aid

🔴 Removed (9 signatures)

• 1 card · ➖ trigger/ChangesZone · removed: ChangesZone (active in=graveyard, from=battlefield, to=graveyard, valid target=player, watches=self)
  • Affected (first 3): Selenia, the Cursed Heart
• 1 card · ➖ trigger/DamageDone · removed: DamageDone (active in=battlefield, damage kind=combat only, valid source=self, valid target=player)
  • Affected (first 3): Koma, World-Eater
• 1 card · ➖ trigger/EntersOrAttacks · removed: EntersOrAttacks (active in=battlefield, to=battlefield, watches=self)
  • Affected (first 3): The Rani
• 1 card · ➖ trigger/Phase · removed: Phase (active in=battlefield, phase=upkeep)
  • Affected (first 3): Koma, Cosmos Serpent
• 1 card · ➖ ability/Token · removed: Token (kind=activated, timing=sorcery speed, token=+2/+2 White Ajani (Creature Cat Soldier))
  • Affected (first 3): Ajani, Strength of the Pride
• 1 card · ➖ ability/Token · removed: Token (kind=activated, token=+0/+1 Red Kobolds of ~ (Creature Kobold))
  • Affected (first 3): Kher Keep
• 1 card · ➖ ability/Token · removed: Token (kind=activated, token=+1/+1 Green ~ Elves (Creature Elf Druid))
  • Affected (first 3): Llanowar Mentor
• 1 card · ➖ ability/Token · removed: Token (kind=activated, token=+1/+1 White ~ Harrier (Creature Kithkin Soldier))
  • Affected (first 3): Goldmeadow Lookout
• 1 card · ➖ ability/for · removed: for
  • Affected (first 3): Smoke Spirits' Aid

[matthewevans]

Maintainer fixup is now at 50a6067cb47bf04f84ab66aa5bf1e5e8c848575b.

It corrects the token-name rationale to cite CR 111.4 only for the name-setting claim, leaves parser-boundary grammar uncited, and adds discriminating coverage through public parse_oracle_text for Kher Keep plus the plural tokens named prefix classifier.

CI and the <!-- coverage-parse-diff --> artifact must complete for this exact head before the approval/enqueue decision resumes.

[matthewevans]

Approved after current-head implementation review: parse_card_named_literal_prefix classifies the token(s) named creation grammar at the normalization seam; CR 111.4 is now limited to the name-setting claim; oracle_effect/tests.rs exercises public parse_oracle_text and asserts Kher Keep yields Kobolds of Kher Keep. The SHA-bound parse diff matches the claimed nine-card scope. Quality Gate: PASS.