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pdftract/notes/bf-644ci.md
jedarden 8c2bf56dfd docs(bf-644ci): verify no-mapping.pdf unmapped glyph documentation 
Verified that existing documentation at tests/fixtures/no-mapping.md
comprehensively catalogs the 3 unmapped glyphs (g001, g002, g003)
with CID numbers and explanations for why they're unmapped.

All acceptance criteria met - documentation already complete from
previous bead bf-68f9i.

Closes bf-644ci
2026-07-03 18:32:58 -04:00

2.3 KiB
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bf-644ci: Verify no-mapping.pdf unmapped glyph documentation

Task

Identify and catalog unmapped glyphs in no-mapping.pdf fixture

Verification Summary

Verified that existing documentation at tests/fixtures/no-mapping.md is comprehensive and accurate.

Unmapped Glyphs Confirmed

The fixture contains exactly 3 unmapped glyphs:

  1. /g001 (CID 0)

    • Custom glyph name not in Adobe Glyph List (AGL)
    • Font /CustomNoMap is not a standard Adobe font
    • No ToUnicode CMap present
    • Should recover as "A" via Level 4 glyph shape recognition

  2. /g002 (CID 1)

    • Custom glyph name not in Adobe Glyph List (AGL)
    • Font /CustomNoMap is not a standard Adobe font
    • No ToUnicode CMap present
    • Should recover as "B" via Level 4 glyph shape recognition

  3. /g003 (CID 2)

    • Custom glyph name not in Adobe Glyph List (AGL)
    • Font /CustomNoMap is not a standard Adobe font
    • No ToUnicode CMap present
    • Should recover as "C" via Level 4 glyph shape recognition

Verification Methods

  1. PDF Structure Verification:

    • pdfinfo: Confirms PDF is valid (1 page, 660 bytes, PDF 1.4)
    • pdffonts: Shows CustomNoMap Type 1 font with Custom encoding, no Unicode mapping
    • Direct PDF inspection: Confirmed encoding array /Differences [0 /g001 /g002 /g003]
    • Content stream verification: Confirmed glyph sequence <g001><g002><g003> Tj

  2. Documentation Review:

    • Existing documentation at tests/fixtures/no-mapping.md is comprehensive
    • Includes fixture overview, unmapped glyph details, font configuration, content stream
    • Explains recovery strategy and why fixture exists
    • All acceptance criteria met

Acceptance Criteria Status

  • ✅ Documentation file exists at tests/fixtures/no-mapping.md
  • ✅ Lists 3 specific unmapped glyphs by CID/glyph name
  • ✅ Explains why each glyph is unmapped

Conclusion

The documentation was already created in a previous bead (bf-68f9i) and is accurate and complete. No additional work required.

Related Files

  • tests/fixtures/no-mapping.md - Comprehensive documentation (already exists)
  • tests/fixtures/encoding/no-mapping.pdf - Test fixture
  • tests/fixtures/encoding/no-mapping.txt - Ground truth: "ABC"
  • tests/fixtures/generate_encoding_fixtures.rs - Fixture generator