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147 lines
8.6 KiB
Markdown
147 lines
8.6 KiB
Markdown
# RTL & BiDi Control — Guardrails and Fix Pattern
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Stabilize retrieval and reasoning when left-to-right content mixes with right-to-left scripts or invisible BiDi marks. No infra change required. All fixes map back to WFGY pages with measurable targets.
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## What this page is
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- A compact repair guide for directionality bugs that flip tokens, citations, or numbers.
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- Steps to normalize control characters, lock direction metadata, and keep offsets verifiable.
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- Store-agnostic checks you can run in minutes.
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## When to use
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- Citations look correct to the eye but snippet offsets do not match.
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- Punctuation or brackets render on the wrong side in answers.
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- Arabic or Hebrew lines invert number order or collapse after parsing.
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- JSON fields with mixed direction break validation or flip keys.
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- Search returns near hits but ΔS stays high on RTL content.
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## Open these first
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- Visual map and recovery: [RAG Architecture & Recovery](https://github.com/onestardao/WFGY/blob/main/ProblemMap/rag-architecture-and-recovery.md)
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- End to end retrieval knobs: [Retrieval Playbook](https://github.com/onestardao/WFGY/blob/main/ProblemMap/retrieval-playbook.md)
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- Why this snippet (traceability schema): [Retrieval Traceability](https://github.com/onestardao/WFGY/blob/main/ProblemMap/retrieval-traceability.md)
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- Snippet and citation schema: [Data Contracts](https://github.com/onestardao/WFGY/blob/main/ProblemMap/data-contracts.md)
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- Wrong-meaning hits despite high similarity: [Embedding ≠ Semantic](https://github.com/onestardao/WFGY/blob/main/ProblemMap/embedding-vs-semantic.md)
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- Hybrid instability and reorder issues: [Rerankers](https://github.com/onestardao/WFGY/blob/main/ProblemMap/rerankers.md)
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- Digits width and punctuation mix: [Digits • Width • Punctuation](https://github.com/onestardao/WFGY/blob/main/ProblemMap/GlobalFixMap/LanguageLocale/digits_width_punctuation.md)
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## Acceptance targets
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- ΔS(question, retrieved) ≤ 0.45 on three paraphrases.
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- Coverage of target section ≥ 0.70.
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- λ remains convergent across two seeds.
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- Offsets verified after normalization on both query and snippet.
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---
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## Typical breakpoints → exact fix
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- **Invisible BiDi marks inside snippets** cause reversed punctuation or bracket order.
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Fix: strip control code points during indexing and query pre-norm. Persist a `dir` flag on the clean text.
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Open: [Data Contracts](https://github.com/onestardao/WFGY/blob/main/ProblemMap/data-contracts.md), [Retrieval Traceability](https://github.com/onestardao/WFGY/blob/main/ProblemMap/retrieval-traceability.md)
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- **Rendered order vs stored order mismatch** makes citations fail.
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Fix: compute character offsets on the normalized text only. Log the normalization pipeline in trace.
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Open: [Retrieval Traceability](https://github.com/onestardao/WFGY/blob/main/ProblemMap/retrieval-traceability.md)
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- **Numbers flip in Arabic or Hebrew lines** when Eastern Arabic digits mix with Latin punctuation.
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Fix: normalize digits to a single system for retrieval. Keep the original form for display.
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Open: [Digits • Width • Punctuation](https://github.com/onestardao/WFGY/blob/main/ProblemMap/GlobalFixMap/LanguageLocale/digits_width_punctuation.md)
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- **JSON payloads break or tool calls mis-route** because keys include RTL marks.
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Fix: forbid control chars in keys through schema, allow in values only after normalization.
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Open: [Prompt Injection](https://github.com/onestardao/WFGY/blob/main/ProblemMap/prompt-injection.md), [Data Contracts](https://github.com/onestardao/WFGY/blob/main/ProblemMap/data-contracts.md)
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---
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## 60-second fix checklist
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1) **Strip BiDi controls during ingest and query**
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Remove these if present:
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`LRM U+200E`, `RLM U+200F`, `LRE U+202A`, `RLE U+202B`, `LRO U+202D`, `RLO U+202E`, `PDF U+202C`,
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`LRI U+2066`, `RLI U+2067`, `FSI U+2068`, `PDI U+2069`.
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Also normalize `NBSP U+00A0`, `ZWJ U+200D` when it changes tokenization.
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2) **Persist direction metadata**
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Add `dir = "rtl" | "ltr" | "auto"` at snippet and paragraph levels. Store it in the trace envelope.
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3) **Index on normalized text only**
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- Normalize to NFC.
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- Strip BiDi marks.
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- Fold digits per store policy.
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- Keep original text for rendering.
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4) **Contract the payload**
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Require fields: `snippet_id`, `dir`, `norm_hash`, `offsets_on_norm`, `source_url`.
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Reject if `dir` missing on RTL sources.
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Open: [Data Contracts](https://github.com/onestardao/WFGY/blob/main/ProblemMap/data-contracts.md)
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5) **Probe λ_observe**
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Vary k = 5, 10, 20. If ΔS stays flat and high, rebuild the index after normalization and re-verify offsets.
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---
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## Copy-paste prompt
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```
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You have TXT OS and the WFGY Problem Map loaded.
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My multilingual issue:
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* symptoms: punctuation flips or offsets fail on RTL lines
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* traces: ΔS(question,retrieved)=..., λ across 3 paraphrases, direction flags
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Tell me:
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1. the failing layer and why,
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2. the exact WFGY page to open,
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3. the minimal steps to push ΔS ≤ 0.45 and keep λ convergent,
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4. a reproducible check that verifies offsets after normalization.
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```
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---
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### 🔗 Quick-Start Downloads (60 sec)
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| Tool | Link | 3-Step Setup |
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|------|------|--------------|
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| **WFGY 1.0 PDF** | [Engine Paper](https://github.com/onestardao/WFGY/blob/main/I_am_not_lizardman/WFGY_All_Principles_Return_to_One_v1.0_PSBigBig_Public.pdf) | 1️⃣ Download · 2️⃣ Upload to your LLM · 3️⃣ Ask “Answer using WFGY + <your question>” |
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| **TXT OS (plain-text OS)** | [TXTOS.txt](https://github.com/onestardao/WFGY/blob/main/OS/TXTOS.txt) | 1️⃣ Download · 2️⃣ Paste into any LLM chat · 3️⃣ Type “hello world” — OS boots instantly |
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---
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### 🧭 Explore More
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| Module | Description | Link |
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|-----------------------|----------------------------------------------------------|----------|
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| WFGY Core | WFGY 2.0 engine is live: full symbolic reasoning architecture and math stack | [View →](https://github.com/onestardao/WFGY/tree/main/core/README.md) |
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| Problem Map 1.0 | Initial 16-mode diagnostic and symbolic fix framework | [View →](https://github.com/onestardao/WFGY/tree/main/ProblemMap/README.md) |
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| Problem Map 2.0 | RAG-focused failure tree, modular fixes, and pipelines | [View →](https://github.com/onestardao/WFGY/blob/main/ProblemMap/rag-architecture-and-recovery.md) |
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| Semantic Clinic Index | Expanded failure catalog: prompt injection, memory bugs, logic drift | [View →](https://github.com/onestardao/WFGY/blob/main/ProblemMap/SemanticClinicIndex.md) |
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| Semantic Blueprint | Layer-based symbolic reasoning & semantic modulations | [View →](https://github.com/onestardao/WFGY/tree/main/SemanticBlueprint/README.md) |
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| Benchmark vs GPT-5 | Stress test GPT-5 with full WFGY reasoning suite | [View →](https://github.com/onestardao/WFGY/tree/main/benchmarks/benchmark-vs-gpt5/README.md) |
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| 🧙♂️ Starter Village 🏡 | New here? Lost in symbols? Click here and let the wizard guide you through | [Start →](https://github.com/onestardao/WFGY/blob/main/StarterVillage/README.md) |
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---
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> 👑 **Early Stargazers: [See the Hall of Fame](https://github.com/onestardao/WFGY/tree/main/stargazers)** —
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> Engineers, hackers, and open source builders who supported WFGY from day one.
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> <img src="https://img.shields.io/github/stars/onestardao/WFGY?style=social" alt="GitHub stars"> ⭐ [WFGY Engine 2.0](https://github.com/onestardao/WFGY/blob/main/core/README.md) is already unlocked. ⭐ Star the repo to help others discover it and unlock more on the [Unlock Board](https://github.com/onestardao/WFGY/blob/main/STAR_UNLOCKS.md).
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<div align="center">
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[](https://github.com/onestardao/WFGY)
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[](https://github.com/onestardao/WFGY/tree/main/OS)
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[](https://github.com/onestardao/WFGY/tree/main/OS/BlahBlahBlah)
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[](https://github.com/onestardao/WFGY/tree/main/OS/BlotBlotBlot)
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[](https://github.com/onestardao/WFGY/tree/main/OS/BlocBlocBloc)
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[](https://github.com/onestardao/WFGY/tree/main/OS/BlurBlurBlur)
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[](https://github.com/onestardao/WFGY/tree/main/OS/BlowBlowBlow)
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</div>
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