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Fontbakery 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/fontbakery/issues and remember to include a pointer to the repo and branch you're checking.

DEPRECATION WARNING

By late-December 2024, FontBakery version 0.13.0 introduced a new naming scheme for the check-IDs.

Fontbakery detected usage of old IDs and performed an automatic backwards-compatibility translation for you.
This automatic translation will be deprecated in the next major release.

Please start using the new check-IDs as documented at /Lib/fontbakery/legacy_checkids.py

The following legacy check-IDs were detected:
- com.google.fonts/check/outline_jaggy_segments
- com.google.fonts/check/version_bump
- com.google.fonts/check/outline_semi_vertical
- com.google.fonts/check/outline_colinear_vectors
- com.google.fonts/check/ttx_roundtrip
- com.google.fonts/check/outline_alignment_miss
- com.google.fonts/check/outline_short_segments
- com.google.fonts/check/fontdata_namecheck

Summary

💥 ERROR ☠ FATAL 🔥 FAIL ⚠️ WARN ⏩ SKIP ℹ️ INFO ✅ PASS
2 0 4 11 55 6 160
1% 0% 2% 5% 23% 3% 67%

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!)

FontBakery version: 0.13.1

OpenType Specification Checks

⚠️⚠️⏩⏩⏩⏩⏩⏩⏩⏩⏩⏩⏩⏩⏩⏩⏩⏩⏩

Check GDEF mark glyph class doesn't have characters that are not marks.

Check ID: <FontBakeryCheck:opentype/gdef_non_mark_chars>
⚠️ NotoSansLimbu-Regular.ttf
  • ⚠️ WARN

    The following non-mark characters should not be in the GDEF mark glyph class: U+1929, U+192A and U+192B

    [code: non-mark-chars]

Check glyphs in mark glyph class are non-spacing.

Check ID: <FontBakeryCheck:opentype/gdef_spacing_marks>
⚠️ NotoSansLimbu-Regular.ttf
  • ⚠️ WARN

    The following glyphs seem to be spacing (because they have width > 0 on the hmtx table) so they may be in the GDEF mark glyph class by mistake, or they should have zero width instead: uni1921 (U+1921), uni1929 (U+1929) and uni192B (U+192B)

    [code: spacing-mark-glyphs]

Universal Profile Checks

🔥🔥⚠️⚠️⏩⏩⏩⏩⏩⏩⏩⏩⏩⏩⏩⏩⏩⏩⏩⏩⏩⏩ℹ️ℹ️

EXPERIMENTAL CHECK - Since 2024/12/28
Check base characters have non-zero advance width.

Check ID: <FontBakeryCheck:base_has_width>
🔥 NotoSansLimbu-Regular.ttf
  • 🔥 FAIL

    The following glyphs had zero advance width: - uni192A (U+192A)

    [code: zero-width-bases]

Check if each glyph has the recommended amount of contours.

Check ID: <FontBakeryCheck:contour_count>
⚠️ NotoSansLimbu-Regular.ttf
  • ⚠️ WARN

    This check inspects the glyph outlines and detects the total number of contours in each of them. The expected values are infered from the typical ammounts 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:

    - Glyph name: aogonek	Contours detected: 3	Expected: 2
    
    - Glyph name: uogonek	Contours detected: 2	Expected: 1
    
    - Glyph name: aogonek	Contours detected: 3	Expected: 2
    
    - Glyph name: uogonek	Contours detected: 2	Expected: 1
    
    [code: contour-count]

Check math signs have the same width.

Check ID: <FontBakeryCheck:math_signs_width>
⚠️ NotoSansLimbu-Regular.ttf
  • ⚠️ WARN

    The most common width is 572 among a set of 6 math glyphs. The following math glyphs have a different width, though:

    Width = 322: minus

    [code: width-outliers]

Glyph names are all valid?

Check ID: <FontBakeryCheck:valid_glyphnames>
🔥 NotoSansLimbu-Regular.ttf
  • 🔥 FAIL

    The following glyph names do not comply with naming conventions: danda-deva

    A glyph name must be entirely comprised of characters from the following set: A-Z a-z 0-9 .(period) (underscore). A glyph name must not start with a digit or period. There are a few exceptions such as the special glyph ".notdef". The glyph names "twocents", "a1", and "" are all valid, while "2cents" and ".twocents" are not.

    [code: found-invalid-names]

Article Checks

⚠️

Validate size, and resolution of article images, and ensure article page has minimum length and includes visual assets.

Check ID: <FontBakeryCheck:googlefonts/article/images>
⚠️ NotoSansLimbu-Regular.ttf
  • ⚠️ WARN

    Article page is too short!

    [code: length-requirements-not-met]
  • ⚠️ WARN

    Article page lacks visual assets.

    [code: missing-visual-asset]
  • ✅ PASS

    ok

Metadata Checks

⚠️⚠️⏩⏩⏩⏩ℹ️

Check samples can be rendered.

Check ID: <FontBakeryCheck:googlefonts/metadata/can_render_samples>
⚠️ NotoSansLimbu-Regular.ttf
  • ⚠️ WARN

    Aparently there's no sample strings for 'sa_Limb' in the gflanguages package.

    [code: no-sample-string]

Check for codepoints not covered by METADATA subsets.

Check ID: <FontBakeryCheck:googlefonts/metadata/unreachable_subsetting>
⚠️ NotoSansLimbu-Regular.ttf
  • ⚠️ WARN

    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: yi, canadian-aboriginal
    • U+02D9 DOT ABOVE: try adding one of: yi, canadian-aboriginal
    • U+02DB OGONEK: try adding one of: yi, canadian-aboriginal
    • U+0302 COMBINING CIRCUMFLEX ACCENT: try adding one of: cherokee, coptic, math, tifinagh
    • U+0306 COMBINING BREVE: try adding one of: old-permic, tifinagh
    • U+0307 COMBINING DOT ABOVE: try adding one of: hebrew, canadian-aboriginal, tifinagh, malayalam, syriac, todhri, tai-le, math, coptic, duployan, old-permic
    • 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: cherokee, tai-le
    • U+0326 COMBINING COMMA BELOW: try adding math
    • U+0327 COMBINING CEDILLA: try adding math
    • U+0328 COMBINING OGONEK: not included in any glyphset definition

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

    [code: unreachable-subsetting]

Glyphset Checks

💥

Shapes languages in all GF glyphsets.

Check ID: <FontBakeryCheck:googlefonts/glyphsets/shape_languages>
💥 NotoSansLimbu-Regular.ttf
  • 💥 ERROR

    Failed with ModuleNotFoundError: No module named 'shaperglot.checker'

      File "/Users/simon/work/gf-dashboard/venv/lib/python3.13/site-packages/fontbakery/checkrunner.py", line 222, in _run_check
        subresults = list(subresults)
      File "/Users/simon/work/gf-dashboard/venv/lib/python3.13/site-packages/fontbakery/checks/vendorspecific/googlefonts/glyphsets/shape_languages.py", line 19, in check_glyphsets_shape_languages
        from shaperglot.checker import Checker
    
    
    [code: failed-check]

Description Checks

🔥🔥⚠️⚠️⏩

Does DESCRIPTION file contain broken links?

Check ID: <FontBakeryCheck:googlefonts/description/broken_links>
🔥 NotoSansLimbu-Regular.ttf

DESCRIPTION.en_us.html should end in a linebreak.

Check ID: <FontBakeryCheck:googlefonts/description/eof_linebreak>
⚠️ METADATA.pb
  • ⚠️ WARN

    The last characther on DESCRIPTION.en_us.html is not a line-break. Please add it.

    [code: missing-eof-linebreak]

On a family update, the DESCRIPTION.en_us.html file should ideally also be updated.

Check ID: <FontBakeryCheck:googlefonts/description/family_update>
⚠️ NotoSansLimbu-Regular.ttf
  • ⚠️ WARN

    The DESCRIPTION.en_us.html file in this family has not changed in comparison to the latest font release on the google/fonts github repo. Please consider mentioning note-worthy improvements made to the family recently.

    [code: description-not-updated]

DESCRIPTION.en_us.html must have more than 200 bytes.

Check ID: <FontBakeryCheck:googlefonts/description/min_length>
🔥 METADATA.pb
  • 🔥 FAIL

    DESCRIPTION.en_us.html must have size larger than 200 bytes.

    [code: too-short]

Shaping Checks

💥⏩⏩⏩

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

Check ID: <FontBakeryCheck:soft_dotted>
💥 NotoSansLimbu-Regular.ttf
  • 💥 ERROR

    Failed with ModuleNotFoundError: No module named 'shaperglot.checker'

      File "/Users/simon/work/gf-dashboard/venv/lib/python3.13/site-packages/fontbakery/checkrunner.py", line 222, in _run_check
        subresults = list(subresults)
      File "/Users/simon/work/gf-dashboard/venv/lib/python3.13/site-packages/fontbakery/checks/soft_dotted.py", line 144, in check_soft_dotted
        from shaperglot.checker import Checker
    
    
    [code: failed-check]

Outline Checks

⚠️

Are any segments inordinately short?

Check ID: <FontBakeryCheck:outline_short_segments>
⚠️ NotoSansLimbu-Regular.ttf
  • ⚠️ WARN

    The following glyphs have segments which seem very short:

    * uni1903 (U+1903) contains a short segment L<<146.0,358.0>--<155.0,358.0>>
    
    * uni1905 (U+1905) contains a short segment B<<402.0,324.0>-<392.0,324.0>-<382.0,323.0>>
    
    * uni1906 (U+1906) contains a short segment B<<252.0,159.0>-<252.0,156.0>-<251.0,149.0>>
    
    * uni1906 (U+1906) contains a short segment B<<251.0,149.0>-<250.0,142.0>-<250.0,139.0>>
    
    * uni1907 (U+1907) contains a short segment L<<428.0,386.0>--<426.0,366.0>>
    
    * uni1907 (U+1907) contains a short segment L<<245.0,192.0>--<248.0,212.0>>
    
    * uni1917 (U+1917) contains a short segment B<<108.0,493.0>-<107.0,484.0>-<106.5,475.5>>
    
    * uni1917 (U+1917) contains a short segment B<<106.5,475.5>-<106.0,467.0>-<106.0,459.0>>
    
    * uni194A (U+194A) contains a short segment L<<26.0,-5.0>--<23.0,1.0>>
    
    * uni194A (U+194A) contains a short segment L<<468.0,580.0>--<474.0,573.0>>
    
    * uni194D (U+194D) contains a short segment B<<281.0,583.0>-<289.0,583.0>-<295.0,583.0>>
    
    * uni194D (U+194D) contains a short segment B<<295.0,583.0>-<301.0,583.0>-<308.0,584.0>>
    
    * uni194D (U+194D) contains a short segment B<<263.0,540.0>-<259.0,541.0>-<254.5,541.0>>
    
    * uni194D (U+194D) contains a short segment B<<254.5,541.0>-<250.0,541.0>-<245.0,541.0>>
    
    * M (U+004D) contains a short segment L<<177.0,626.0>--<173.0,626.0>>
    
    * M (U+004D) contains a short segment L<<450.0,129.0>--<454.0,129.0>>
    
    * N (U+004E) contains a short segment L<<176.0,593.0>--<172.0,593.0>>
    
    * N (U+004E) contains a short segment L<<582.0,123.0>--<586.0,123.0>>
    
    * Nacute (U+0143) contains a short segment L<<176.0,593.0>--<172.0,593.0>>
    
    * Nacute (U+0143) contains a short segment L<<582.0,123.0>--<586.0,123.0>>
    
    * Ncaron (U+0147) contains a short segment L<<176.0,593.0>--<172.0,593.0>>
    
    * Ncaron (U+0147) contains a short segment L<<582.0,123.0>--<586.0,123.0>>
    
    * Ncommaaccent (U+0145) contains a short segment L<<176.0,593.0>--<172.0,593.0>>
    
    * Ncommaaccent (U+0145) contains a short segment L<<582.0,123.0>--<586.0,123.0>>
    
    * Ntilde (U+00D1) contains a short segment L<<176.0,593.0>--<172.0,593.0>>
    
    * Ntilde (U+00D1) contains a short segment L<<582.0,123.0>--<586.0,123.0>>
    
    * Q (U+0051) contains a short segment B<<416.0,-9.0>-<410.0,-9.0>-<403.5,-9.5>>
    
    * Q (U+0051) contains a short segment B<<403.5,-9.5>-<397.0,-10.0>-<391.0,-10.0>>
    
    * Uogonek (U+0172) contains a short segment B<<539.5,-158.5>-<551.0,-156.0>-<559.0,-155.0>>
    
    * W (U+0057) contains a short segment B<<468.0,577.5>-<463.0,600.0>-<461.0,609.0>>
    
    * Wacute (U+1E82) contains a short segment B<<468.0,577.5>-<463.0,600.0>-<461.0,609.0>>
    
    * Wcircumflex (U+0174) contains a short segment B<<468.0,577.5>-<463.0,600.0>-<461.0,609.0>>
    
    * Wdieresis (U+1E84) contains a short segment B<<468.0,577.5>-<463.0,600.0>-<461.0,609.0>>
    
    * Wgrave (U+1E80) contains a short segment B<<468.0,577.5>-<463.0,600.0>-<461.0,609.0>>
    
    * a (U+0061) contains a short segment L<<399.0,76.0>--<395.0,76.0>>
    
    * aacute (U+00E1) contains a short segment L<<399.0,76.0>--<395.0,76.0>>
    
    * abreve (U+0103) contains a short segment L<<399.0,76.0>--<395.0,76.0>>
    
    * acircumflex (U+00E2) contains a short segment L<<399.0,76.0>--<395.0,76.0>>
    
    * adieresis (U+00E4) contains a short segment L<<399.0,76.0>--<395.0,76.0>>
    
    * agrave (U+00E0) contains a short segment L<<399.0,76.0>--<395.0,76.0>>
    
    * amacron (U+0101) contains a short segment L<<399.0,76.0>--<395.0,76.0>>
    
    * aogonek (U+0105) contains a short segment L<<399.0,76.0>--<395.0,76.0>>
    
    * aring (U+00E5) contains a short segment L<<399.0,76.0>--<395.0,76.0>>
    
    * at (U+0040) contains a short segment B<<613.0,293.0>-<612.0,275.0>-<612.0,267.5>>
    
    * at (U+0040) contains a short segment B<<612.0,267.5>-<612.0,260.0>-<612.0,257.0>>
    
    * atilde (U+00E3) contains a short segment L<<399.0,76.0>--<395.0,76.0>>
    
    * d (U+0064) contains a short segment L<<446.0,72.0>--<442.0,72.0>>
    
    * dcaron (U+010F) contains a short segment L<<446.0,72.0>--<442.0,72.0>>
    
    * dcroat (U+0111) contains a short segment L<<445.0,72.0>--<441.0,72.0>>
    
    * euro (U+20AC) contains a short segment B<<184.0,390.0>-<183.0,380.0>-<183.0,371.0>>
    
    * euro (U+20AC) contains a short segment B<<183.0,371.0>-<183.0,362.0>-<183.0,352.0>>
    
    * euro (U+20AC) contains a short segment B<<183.0,352.0>-<183.0,343.0>-<183.0,332.5>>
    
    * euro (U+20AC) contains a short segment B<<183.0,332.5>-<183.0,322.0>-<184.0,311.0>>
    
    * euro (U+20AC) contains a short segment B<<95.0,311.0>-<94.0,323.0>-<94.0,331.0>>
    
    * euro (U+20AC) contains a short segment B<<94.0,331.0>-<94.0,339.0>-<94.0,352.0>>
    
    * euro (U+20AC) contains a short segment B<<94.0,352.0>-<94.0,363.0>-<94.5,373.5>>
    
    * euro (U+20AC) contains a short segment B<<94.5,373.5>-<95.0,384.0>-<95.0,390.0>>
    
    * germandbls (U+00DF) contains a short segment B<<382.0,412.0>-<382.0,399.0>-<388.5,388.0>>
    
    * m (U+006D) contains a short segment L<<169.0,463.0>--<174.0,463.0>>
    
    * n (U+006E) contains a short segment L<<169.0,463.0>--<174.0,463.0>>
    
    * nacute (U+0144) contains a short segment L<<169.0,463.0>--<174.0,463.0>>
    
    * ncaron (U+0148) contains a short segment L<<169.0,463.0>--<174.0,463.0>>
    
    * ncommaaccent (U+0146) contains a short segment L<<169.0,463.0>--<174.0,463.0>>
    
    * ntilde (U+00F1) contains a short segment L<<169.0,463.0>--<174.0,463.0>>
    
    * p (U+0070) contains a short segment L<<169.0,463.0>--<173.0,463.0>>
    
    * r (U+0072) contains a short segment L<<167.0,438.0>--<171.0,438.0>>
    
    * racute (U+0155) contains a short segment L<<167.0,438.0>--<171.0,438.0>>
    
    * rcaron (U+0159) contains a short segment L<<167.0,438.0>--<171.0,438.0>>
    
    * trademark (U+2122) contains a short segment L<<386.0,633.0>--<382.0,633.0>>
    
    * two (U+0032) contains a short segment L<<159.0,84.0>--<159.0,80.0>>
    
    * u (U+0075) contains a short segment L<<448.0,71.0>--<444.0,71.0>>
    
    * uacute (U+00FA) contains a short segment L<<448.0,71.0>--<444.0,71.0>>
    
    * ucircumflex (U+00FB) contains a short segment L<<448.0,71.0>--<444.0,71.0>>
    
    * udieresis (U+00FC) contains a short segment L<<448.0,71.0>--<444.0,71.0>>
    
    * ugrave (U+00F9) contains a short segment L<<448.0,71.0>--<444.0,71.0>>
    
    * uhungarumlaut (U+0171) contains a short segment L<<448.0,71.0>--<444.0,71.0>>
    
    * umacron (U+016B) contains a short segment L<<448.0,71.0>--<444.0,71.0>>
    
    * uogonek (U+0173) contains a short segment L<<448.0,71.0>--<444.0,71.0>>
    
    * uring (U+016F) contains a short segment L<<448.0,71.0>--<444.0,71.0>>
    
    [code: found-short-segments]

Font File Checks

⚠️⏩⏩⏩⏩⏩⏩⏩⏩⏩⏩ℹ️ℹ️

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

Check ID: <FontBakeryCheck:googlefonts/meta/script_lang_tags>
⚠️ NotoSansLimbu-Regular.ttf
  • ⚠️ WARN

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

    [code: lacks-meta-table]