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142 lines
11 KiB
Markdown
142 lines
11 KiB
Markdown
# BiDi and RTL Control Characters: Guardrails and Fix Pattern
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Stabilize Arabic, Hebrew, and mixed LTR/RTL flows when retrieval looks correct but citations or JSON fields render out of order. This page localizes failures caused by invisible BiDi controls and mixed number shapes.
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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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* Snippet and citation schema: [Data Contracts](https://github.com/onestardao/WFGY/blob/main/ProblemMap/data-contracts.md)
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* Why this snippet: [Retrieval Traceability](https://github.com/onestardao/WFGY/blob/main/ProblemMap/retrieval-traceability.md)
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* Tokenizer and casing traps: [tokenizer\_mismatch.md](https://github.com/onestardao/WFGY/blob/main/ProblemMap/GlobalFixMap/LanguageLocale/tokenizer_mismatch.md) · [digits\_width\_punctuation.md](https://github.com/onestardao/WFGY/blob/main/ProblemMap/GlobalFixMap/LanguageLocale/digits_width_punctuation.md) · [diacritics\_and\_folding.md](https://github.com/onestardao/WFGY/blob/main/ProblemMap/GlobalFixMap/LanguageLocale/diacritics_and_folding.md) · [locale\_drift.md](https://github.com/onestardao/WFGY/blob/main/ProblemMap/GlobalFixMap/LanguageLocale/locale_drift.md) · [script\_mixing.md](https://github.com/onestardao/WFGY/blob/main/ProblemMap/GlobalFixMap/LanguageLocale/script_mixing.md)
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* CJK counterpart for word breaks: [cjk\_segmentation\_wordbreak.md](https://github.com/onestardao/WFGY/blob/main/ProblemMap/GlobalFixMap/LanguageLocale/cjk_segmentation_wordbreak.md)
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## Core acceptance targets
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* ΔS(question, retrieved) ≤ 0.45
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* Coverage of target section ≥ 0.70
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* λ remains convergent across 3 paraphrases and 2 seeds
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* Render and storage orders are consistent for fields tagged as `dir` aware
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## Typical failure patterns → exact fix
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| Symptom | Likely cause | Open this |
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| ----------------------------------------------------------------- | ------------------------------------------------------- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
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| Citations render right-to-left and break JSON order | unisolated RLM/LRM/RLE/LRE/RLO/PDF or mixed numerals | [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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| Answer text looks correct, but ΔS spikes and λ flips between runs | invisible controls in prompt or snippet, header reorder | [Retrieval Playbook](https://github.com/onestardao/WFGY/blob/main/ProblemMap/retrieval-playbook.md) |
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| Punctuation mirrors or shifts around anchors | missing isolates, UI direction not declared | [tokenizer\_mismatch.md](https://github.com/onestardao/WFGY/blob/main/ProblemMap/GlobalFixMap/LanguageLocale/tokenizer_mismatch.md) |
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| Arabic-Indic vs European digits change ranking | digit shape inconsistency, analyzer mismatch | [digits\_width\_punctuation.md](https://github.com/onestardao/WFGY/blob/main/ProblemMap/GlobalFixMap/LanguageLocale/digits_width_punctuation.md) |
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| Mixed Hebrew + English entity names fail exact match | script mixing without explicit isolation | [script\_mixing.md](https://github.com/onestardao/WFGY/blob/main/ProblemMap/GlobalFixMap/LanguageLocale/script_mixing.md) |
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## 60-second fix checklist
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1. **Measure**
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Log ΔS(question, retrieved) and ΔS(retrieved, anchor). If ΔS ≥ 0.60, suspect direction controls or digit shapes.
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2. **Normalize direction metadata**
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* On ingest: strip legacy overrides `LRE/RLE/LRO/RLO/PDF` if not required by the source.
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* Keep isolates only: `LRI`, `RLI`, `FSI`, closed by `PDI`.
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* Tag fields with `dir="auto|ltr|rtl"` at render time. Store as logical order.
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3. **Unify digits and punctuation**
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* Convert digits to one canonical shape for indexing.
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* Normalize Arabic comma and question mark to canonical forms in the index layer.
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4. **Schema fences**
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* Contract requires `text`, `dir`, `normalized_text`, `raw_text`, `digit_shape`, `controls_present`.
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* Reject snippets that contain unclosed BiDi controls.
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5. **Retrieval probe**
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* Re-run with k in {5, 10, 20}. If rank stays unstable, rebuild analyzer with explicit direction and the same tokenization used at query time.
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## Minimal schema addon
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```json
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{
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"snippet_id": "S123",
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"raw_text": "…",
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"normalized_text": "…",
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"dir": "rtl",
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"digit_shape": "arabic-indic|european",
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"controls_present": ["RLI","PDI"],
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"offsets": [120, 240]
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}
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```
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## Deep diagnostics
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* **Control scan**. Count and classify BiDi controls per snippet. Fail if any of `LRE/RLE/LRO/RLO/PDF` appear without a matching close.
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* **Render vs storage**. Serialize JSON, render in the UI, then parse back and compare field order and values. Mismatch implies missing isolates or UI `dir` drift.
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* **Anchor triangulation**. Compare ΔS to the expected section and a decoy with similar punctuation density. If close, re-index with digit normalization.
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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 issue: mixed Hebrew/Arabic with English numerals causes wrong citation order.
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Traces: ΔS(question,retrieved)=..., ΔS(retrieved,anchor)=..., λ across 3 paraphrases.
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Do:
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1) Identify direction-control risks and whether digits or punctuation cause rank flips.
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2) Point me to the exact WFGY pages to apply.
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3) Give the minimal steps to push ΔS ≤ 0.45 while keeping λ convergent.
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Return a short JSON plan with {dir_policy, digit_policy, controls_fix, verify_steps}.
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```
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---
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**Next planned page:** `indic_tokenization_schwa.md`
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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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