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Fontspector Technical Report

If you think a check is flawed or have an idea for a check, please file an issue at https://github.com/fonttools/fontspector/issues and remember to include a pointer to the repo and branch you're checking.

Summary

🔥 FAIL⚠️ WARNℹ️ INFO✅ PASS⏩ SKIP
3 51 8 111 50
2% 28% 4% 60% 27%

Meaning of check results:

If you get ERRORs, please help us improve the tool by reporting them at our issue tracker.

(but other kinds of bug reports and/or feature requests are also always welcome, of course!)

Fontspector version: 1.5.0

Universal Profile Checks

Check that glyph for U+0675 ARABIC LETTER HIGH HAMZA is not a mark.

Check ID: arabic_high_hamza
🔥 NotoKufiArabic[wght].ttf
  • 🔥 FAIL

    The arabic letter high hamza (U+0675) should have roughly the same size the arabic letter hamza (U+0621), but a different glyph outline area was detected.

    [code: glyph-area]

Check base characters have non-zero advance width.

Check ID: base_has_width
🔥 NotoKufiArabic[wght].ttf
  • 🔥 FAIL

    The following glyphs had zero advance width:

    • uniFC5F (Some(64607))
    • uniFC60 (Some(64608))
    • uniFC61 (Some(64609))
    • uniFC62 (Some(64610))
    • uniFC63 (Some(64611))
    [code: zero-width-bases]

Check if each glyph has the recommended amount of contours.

Check ID: contour_count
⚠️ NotoKufiArabic[wght].ttf
  • ⚠️ WARN

    This check inspects the glyph outlines and detects the total number of contours in each of them. The expected values are inferred from the typical amounts of contours observed in a large collection of reference font families. The divergences listed below may simply indicate a significantly different design on some of your glyphs. On the other hand, some of these may flag actual bugs in the font such as glyphs mapped to an incorrect codepoint. Please consider reviewing the design and codepoint assignment of these to make sure they are correct.

    The following glyphs do not have the recommended number of contours:
    • uni08AC.fina (unencoded): found 4, expected one of: {3}
    • uni0884 (U+0884): found 4, expected one of: {3, 2}
    • uniFD46 (U+FD46): found 15, expected one of: {34, 28}
    • uniFD4C (U+FD4C): found 21, expected one of: {31, 41, 24}
    • uniFD4A (U+FD4A): found 27, expected one of: {36, 30}
    • uniFD47 (U+FD47): found 15, expected one of: {20, 16}
    • uniFD49 (U+FD49): found 22, expected one of: {16, 21}
    • uniFD48 (U+FD48): found 24, expected one of: {22, 17}
    • uniFDCF (U+FDCF): found 23, expected one of: {16, 15}
    • uniFD41 (U+FD41): found 15, expected one of: {19, 16}
    • uniFD42 (U+FD42): found 17, expected one of: {21, 16}
    • uniFD44 (U+FD44): found 19, expected one of: {18, 23}
    • uniFD43 (U+FD43): found 18, expected one of: {21, 17}
    • uniFD45 (U+FD45): found 18, expected one of: {26, 19}
    • uniFD40 (U+FD40): found 13, expected one of: {15, 12}
    • uniFD4F (U+FD4F): found 15, expected one of: {17, 21}
    • uniFD4B (U+FD4B): found 12, expected one of: {13, 20}
    • uniFDFF (U+FDFF): found 10, expected one of: {18, 15}
    • uniFD4E (U+FD4E): found 20, expected one of: {24, 26}
    • uniFDFE (U+FDFE): found 20, expected one of: {24, 26}
    • uni089C (U+089C): found 2, expected one of: {1}
    • uni089D (U+089D): found 3, expected one of: {2}
    • uni08E3 (U+08E3): found 2, expected one of: {1}
    • uni06D9 (U+06D9): found 1, expected one of: {2, 3}
    • uni08CC (U+08CC): found 3, expected one of: {1, 2}
    • uni08DC (U+08DC): found 9, expected one of: {6, 10}
    • uni08DA (U+08DA): found 14, expected one of: {8, 15, 16}
    • uni08D4 (U+08D4): found 7, expected one of: {9, 4, 6}
    • uni08DE (U+08DE): found 7, expected one of: {8, 5}
    • uni08DD (U+08DD): found 8, expected one of: {3, 9}
    • uni0899 (U+0899): found 10, expected one of: {8, 9}
    • uni089B (U+089B): found 10, expected one of: {12, 9}
    • u10EFD (U+10EFD): found 8, expected one of: {9, 3}
    • uni08B6 (U+08B6): found 4, expected one of: {0, 3}
    • uni08B7 (U+08B7): found 6, expected one of: {5, 4, 0}
    • uni06FF (U+06FF): found 3, expected one of: {4, 2}
    • uniFC09 (U+FC09): found 3, expected one of: {5, 2}
    • uniFC0A (U+FC0A): found 5, expected one of: {4, 3, 8}
    • uniFC0F (U+FC0F): found 4, expected one of: {2, 6, 3}
    • uniFC10 (U+FC10): found 6, expected one of: {8, 5, 3}
    • uniFC3D (U+FC3D): found 2, expected one of: {4, 1}
    • uniFC3E (U+FC3E): found 4, expected one of: {3, 6, 2}
    • uniFC42 (U+FC42): found 3, expected one of: {1, 2}
    • uniFC43 (U+FC43): found 2, expected one of: {1, 6, 4}
    • uniFC4F (U+FC4F): found 3, expected one of: {2, 5}
    • uniFC59 (U+FC59): found 4, expected one of: {3}
    • uniFC5A (U+FC5A): found 6, expected one of: {5}
    • uniFC67 (U+FC67): found 4, expected one of: {5, 3, 7}
    • uniFC6A (U+FC6A): found 3, expected one of: {2, 5, 4}
    • uniFC6B (U+FC6B): found 4, expected one of: {6, 5, 3}
    • uniFC6D (U+FC6D): found 4, expected one of: {3, 6, 5}
    • uniFC83 (U+FC83): found 2, expected one of: {1, 5}
    • uniFC84 (U+FC84): found 4, expected one of: {3, 2, 7}
    • uniFC8A (U+FC8A): found 3, expected one of: {2, 5, 4}
    • uniFC8B (U+FC8B): found 4, expected one of: {3, 6, 5}
    • uniFC8D (U+FC8D): found 4, expected one of: {6, 3, 5}
    • uniFC95 (U+FC95): found 4, expected one of: {3}
    • uniFCCC (U+FCCC): found 3, expected one of: {2, 1}
    • uniFCFB (U+FCFB): found 2, expected one of: {5, 1, 4}
    • uniFD0E (U+FD0E): found 2, expected one of: {3, 1, 5}
    • uniFD17 (U+FD17): found 2, expected one of: {5, 7, 1}
    • uniFD2B (U+FD2B): found 3, expected one of: {2, 6, 4}
    • uniFBDA (U+FBDA): found 4, expected one of: {2, 3}
    • uniFBDC (U+FBDC): found 4, expected one of: {2, 3}
    • uniFBE3 (U+FBE3): found 4, expected one of: {3, 2}
    • uniFBDF (U+FBDF): found 6, expected one of: {4, 5}
    • uniFCD9 (U+FCD9): found 3, expected one of: {2, 4}
    • uni06C5.fina (U+FBE1): found 4, expected one of: {2}
    [code: contour-count]

Detect any interpolation issues in the font.

Check ID: interpolation_issues
⚠️ NotoKufiArabic[wght].ttf
  • ⚠️ WARN

    Glyph uni062D.fina has interpolation issues:

    • Kink in contour 0 at node 12
    [code: glyph]
  • ⚠️ WARN

    Glyph uniFC01 has interpolation issues:

    • Kink in contour 2 at node 12
    [code: glyph]
  • ⚠️ WARN

    Glyph uniFC06 has interpolation issues:

    • Kink in contour 2 at node 12
    [code: glyph]
  • ⚠️ WARN

    Glyph uniFC07 has interpolation issues:

    • Kink in contour 2 at node 12
    [code: glyph]
  • ⚠️ WARN

    Glyph uniFC0C has interpolation issues:

    • Kink in contour 3 at node 12
    [code: glyph]
  • ⚠️ WARN

    Glyph uniFC0D has interpolation issues:

    • Kink in contour 3 at node 12
    [code: glyph]
  • ⚠️ WARN

    Glyph uniFC15 has interpolation issues:

    • Kink in contour 2 at node 12
    [code: glyph]
  • ⚠️ WARN

    Glyph uniFC1A has interpolation issues:

    • Kink in contour 2 at node 12
    [code: glyph]
  • ⚠️ WARN

    Glyph uniFC1D has interpolation issues:

    • Kink in contour 1 at node 12
    [code: glyph]
  • ⚠️ WARN

    Glyph uniFC1E has interpolation issues:

    • Kink in contour 1 at node 12
    [code: glyph]
  • ⚠️ WARN

    Glyph uniFC20 has interpolation issues:

    • Kink in contour 2 at node 12
    [code: glyph]
  • ⚠️ WARN

    Glyph uniFC23 has interpolation issues:

    • Kink in contour 3 at node 12
    [code: glyph]
  • ⚠️ WARN

    Glyph uniFC24 has interpolation issues:

    • Kink in contour 3 at node 12
    [code: glyph]
  • ⚠️ WARN

    Glyph uniFC26 has interpolation issues:

    • Kink in contour 2 at node 12
    [code: glyph]
  • ⚠️ WARN

    Glyph uniFC2E has interpolation issues:

    • Kink in contour 3 at node 12
    [code: glyph]
  • ⚠️ WARN

    Glyph uniFC2F has interpolation issues:

    • Kink in contour 3 at node 12
    [code: glyph]
  • ⚠️ WARN

    Glyph uniFC33 has interpolation issues:

    • Kink in contour 4 at node 12
    [code: glyph]
  • ⚠️ WARN

    Glyph uniFC39 has interpolation issues:

    • Kink in contour 1 at node 12
    [code: glyph]
  • ⚠️ WARN

    Glyph uniFC3A has interpolation issues:

    • Kink in contour 1 at node 12
    [code: glyph]
  • ⚠️ WARN

    Glyph uniFC40 has interpolation issues:

    • Kink in contour 1 at node 12
    [code: glyph]
  • ⚠️ WARN

    Glyph uniFC41 has interpolation issues:

    • Kink in contour 1 at node 12
    [code: glyph]
  • ⚠️ WARN

    Glyph uniFC46 has interpolation issues:

    • Kink in contour 2 at node 12
    [code: glyph]
  • ⚠️ WARN

    Glyph uniFC47 has interpolation issues:

    • Kink in contour 2 at node 12
    [code: glyph]
  • ⚠️ WARN

    Glyph uniFC4C has interpolation issues:

    • Kink in contour 2 at node 12
    [code: glyph]
  • ⚠️ WARN

    Glyph uniFC4D has interpolation issues:

    • Kink in contour 2 at node 12
    [code: glyph]
  • ⚠️ WARN

    Glyph uniFC56 has interpolation issues:

    • Kink in contour 3 at node 12
    [code: glyph]
  • ⚠️ WARN

    Glyph uniFC57 has interpolation issues:

    • Kink in contour 3 at node 12
    [code: glyph]
  • ⚠️ WARN

    Glyph uniFD0A has interpolation issues:

    • Kink in contour 4 at node 12
    [code: glyph]
  • ⚠️ WARN

    Glyph uniFD0B has interpolation issues:

    • Kink in contour 4 at node 12
    [code: glyph]
  • ⚠️ WARN

    Glyph uniFD26 has interpolation issues:

    • Kink in contour 4 at node 12
    [code: glyph]
  • ⚠️ WARN

    Glyph uniFD27 has interpolation issues:

    • Kink in contour 4 at node 12
    [code: glyph]
  • ⚠️ WARN

    Glyph uniFD58 has interpolation issues:

    • Kink in contour 4 at node 12
    [code: glyph]
  • ⚠️ WARN

    Glyph uniFD5F has interpolation issues:

    • Kink in contour 3 at node 12
    [code: glyph]
  • ⚠️ WARN

    Glyph uniFD64 has interpolation issues:

    • Kink in contour 3 at node 12
    [code: glyph]
  • ⚠️ WARN

    Glyph uniFD6A has interpolation issues:

    • Kink in contour 6 at node 12
    [code: glyph]
  • ⚠️ WARN

    Glyph uniFD71 has interpolation issues:

    • Kink in contour 4 at node 12
    [code: glyph]
  • ⚠️ WARN

    Glyph uniFD7E has interpolation issues:

    • Kink in contour 6 at node 12
    [code: glyph]
  • ⚠️ WARN

    Glyph uniFD87 has interpolation issues:

    • Kink in contour 3 at node 12
    [code: glyph]
  • ⚠️ WARN

    Glyph uniFDBD has interpolation issues:

    • Kink in contour 4 at node 12
    [code: glyph]
  • ⚠️ WARN

    Glyph uniFEA6 has interpolation issues:

    • Kink in contour 0 at node 12
    [code: glyph]

Are there caret positions declared for every ligature?

Check ID: ligature_carets
⚠️ NotoKufiArabic[wght].ttf
  • ⚠️ WARN

    This font lacks caret positioning values for these ligature glyphs:

    • uniFD42
    • uniFDFE
    • uniFD4D
    • uniFD40
    • uniFD41
    • uniFD4E
    • uniFDCF
    • uniFD45
    • uniFD47
    • uniFD4A
    • uniFD44
    • uniFD4F
    • uniFD4B
    • uniFD49
    • uniFDFF
    • uniFD48
    • uniFD43
    [code: incomplete-caret-pos-data]

Ensure variable fonts include an avar table.

Check ID: mandatory_avar_table
⚠️ NotoKufiArabic[wght].ttf
  • ⚠️ WARN

    The font does not include an avar table.

    [code: missing-avar]

Ensure indic fonts have the Indian Rupee Sign glyph.

Check ID: rupee
⚠️ NotoKufiArabic[wght].ttf
  • ⚠️ WARN

    Font is missing the Indian Rupee Sign glyph. Please add a glyph for Indian Rupee Sign (₹) at codepoint U+20B9.

    [code: missing-rupee]

Check font contains no unreachable glyphs

Check ID: unreachable_glyphs
⚠️ NotoKufiArabic[wght].ttf
  • ⚠️ WARN

    The following glyphs could not be reached by codepoint or substitution rules:

    • uni06F7.mark
    [code: unreachable-glyphs]

Glyph names are all valid?

Check ID: valid_glyphnames
⚠️ NotoKufiArabic[wght].ttf
  • ⚠️ WARN

    The following glyph names are too long: "twodotshorizontalcenter_tahabovear, twodotshorizontalabovear.diagonal, twodotshorizontalabove_tahabovear, twodotshorizontalbelow_tahabovear"

    [code: legacy-long-names]

Whitespace glyphs have ink?

Check ID: whitespace_ink
🔥 NotoKufiArabic[wght].ttf
  • 🔥 FAIL

    The following glyphs have ink; they should be replaced by an empty glyph:

    • uni06DD
    • uni0604
    • uni200C
    • uni200E
    • uni0600
    • uni08E2
    • uni200D
    • uni0891
    • uni0605
    • uni0601
    • uni200F
    • uni0890
    • uni0603
    • uni0602
    [code: has-ink]

Metadata Checks

Check for codepoints not covered by METADATA subsets.

Check ID: googlefonts/metadata/unreachable_subsetting
⚠️ variable-ttf
  • ⚠️ WARN

    fonts/NotoKufiArabic/googlefonts/variable-ttf/NotoKufiArabic[wght].ttf: The following codepoints supported by the font are not covered by any subsets defined in the font's metadata file, and will never be served. You can solve this by either manually adding additional subset declarations to METADATA.pb, or by editing the glyphset definitions.

    • U+02D8 BREVE: try adding one of: canadian-aboriginal, yi
    • U+02D9 DOT ABOVE: try adding one of: yi, canadian-aboriginal
    • U+02DB OGONEK: try adding one of: canadian-aboriginal, yi
    • U+0302 COMBINING CIRCUMFLEX ACCENT: try adding one of: coptic, math, cherokee, tifinagh
    • U+0306 COMBINING BREVE: try adding one of: tifinagh, old-permic
    • U+0307 COMBINING DOT ABOVE: try adding one of: old-permic, syriac, tai-le, tifinagh, todhri, duployan, math, hebrew, coptic, canadian-aboriginal, malayalam
    • U+030A COMBINING RING ABOVE: try adding one of: syriac, duployan
    • U+030B COMBINING DOUBLE ACUTE ACCENT: try adding one of: osage, cherokee
    • U+030C COMBINING CARON: try adding one of: tai-le, cherokee
    • U+0326 COMBINING COMMA BELOW: try adding math
    • U+0327 COMBINING CEDILLA: try adding math
    • U+200F RIGHT-TO-LEFT MARK: try adding one of: hebrew, thaana, syriac, phags-pa, nko
    • U+202F NARROW NO-BREAK SPACE: try adding one of: mongolian, phags-pa, yi
    • U+221A SQUARE ROOT: try adding math
    • U+25CC DOTTED CIRCLE: try adding one of: pahawh-hmong, siddham, malayalam, masaram-gondi, khojki, saurashtra, kayah-li, sinhala, caucasian-albanian, tai-tham, wancho, chakma, buhid, marchen, khmer, lao, zanabazar-square, tai-le, soyombo, bengali, phags-pa, myanmar, sogdian, elbasan, symbols, ahom, dogra, gunjala-gondi, grantha, khudawadi, mahajani, miao, music, tagalog, tibetan, oriya, rejang, coptic, syriac, hanunoo, warang-citi, meetei-mayek, tamil, thaana, nko, kannada, devanagari, duployan, adlam, yi, tifinagh, sundanese, osage, new-tai-lue, mandaic, psalter-pahlavi, javanese, tagbanwa, cham, mende-kikakui, manichaean, hanifi-rohingya, buginese, bassa-vah, lepcha, limbu, bhaiksuki, canadian-aboriginal, hebrew, tai-viet, math, syloti-nagri, thai, batak, kaithi, armenian, brahmi, modi, old-permic, sharada, takri, telugu, tirhuta, gujarati, newa, mongolian, gurmukhi, balinese, kharoshthi

    Or you can add the above codepoints to one of the subsets supported by the font: arabic, latin-ext, latin

    [code: unreachable-subsetting]

Glyphset Checks

Shapes languages in all GF glyphsets.

Check ID: googlefonts/glyphsets/shape_languages
⚠️ NotoKufiArabic[wght].ttf
  • ⚠️ WARN

    Warning language shaping:

    Message Languages
    Auxiliary orthography codepoints: * fi_Latn (Finnish)
    The following auxiliary characters are missing from the font: Ǥ
    The following auxiliary characters are missing from the font: Ŋ
    The following auxiliary characters are missing from the font: Ŧ
    The following auxiliary characters are missing from the font: Ʒ
    The following auxiliary characters are missing from the font: Ǯ
    The following auxiliary characters are missing from the font: ǥ
    The following auxiliary characters are missing from the font: ŋ
    The following auxiliary characters are missing from the font: ŧ
    The following auxiliary characters are missing from the font: ʒ
    The following auxiliary characters are missing from the font: ǯ
    Auxiliary orthography codepoints: * ca_Latn (Catalan)
    The following auxiliary characters are missing from the font: Ŀ
    The following auxiliary characters are missing from the font: ŀ
    Auxiliary orthography codepoints: * nb_Latn (Norwegian Bokmål)
    The following auxiliary characters are missing from the font: Ŋ
    The following auxiliary characters are missing from the font: Ŧ
    The following auxiliary characters are missing from the font: ŋ
    The following auxiliary characters are missing from the font: ŧ
    Auxiliary orthography codepoints: * nl_Latn (Dutch)
    The following auxiliary characters are missing from the font: IJ
    The following auxiliary characters are missing from the font: ij
    Auxiliary orthography codepoints: * en_Latn (English)
    The following auxiliary characters are missing from the font: ʻ
    Auxiliary orthography codepoints: * de_Latn (German)
    The following auxiliary characters are missing from the font: ſ * fr_Latn (French)
    [code: warning-language-shaping]

Font has correct separator glyphs?

Check ID: googlefonts/separator_glyphs
⚠️ NotoKufiArabic[wght].ttf
  • ⚠️ WARN

    The following separator glyphs are missing:

    • U+2028
    • U+2029
    [code: missing-separator-glyphs]

Font File Checks

Ensure fonts have ScriptLangTags declared on the 'meta' table.

Check ID: googlefonts/meta/script_lang_tags
⚠️ NotoKufiArabic[wght].ttf
  • ⚠️ WARN

    This font file does not have a 'meta' table.

    [code: lacks-meta-table]

Shaping Checks

Ensure soft_dotted characters lose their dot when combined with marks that replace the dot.

Check ID: soft_dotted
⚠️ NotoKufiArabic[wght].ttf
  • ⚠️ WARN

    The dot of soft dotted characters used in orthographies must disappear in the following strings:

    • į̄

    • į̂

    • į́

    • į̌

    • į̀

    • į̃The dot of soft dotted characters should disappear in other cases, for example:

    • į̨̄

    • į̨̇

    • į̨̊

    • į̨̋

    • į̨̆

    • į̨̂

    • į̨́

    • į̨̌

    • į̨̀

    • į̨̈

    • į̨̃

    • į̦̄

    • į̦̇

    • į̦̊

    • į̦̋

    • į̦̆

    • į̦̂

    • į̦́

    • į̦̌

    • į̦̀

    • į̦̈

    • į̦̃

    • į̧̄

    • į̧̇

    • į̧̊

    • į̧̋

    • į̧̆

    • į̧̂

    • į̧́

    • į̧̌

    • į̧̀

    • į̧̈

    • į̧̃

    • į̇

    • į̊

    • į̋

    • į̆

    • į̈

    [code: soft-dotted]