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.

Summary

💥 ERROR 🔥 FAIL ⚠️ WARN ⏩ SKIP ℹ️ INFO ✅ PASS
2 0 18 63 17 365
1% 0% 5% 18% 5% 107%

Note: The following loglevels were omitted in this report: SKIP, INFO, PASS, DEBUG

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: 0.9.2

Section: Google Fonts

⚠️⚠️⚠️⚠️⚠️⚠️⚠️⚠️⚠️⚠️⚠️⏩⏩⏩⏩⏩⏩⏩⏩⏩⏩⏩⏩⏩⏩⏩⏩⏩⏩⏩⏩⏩⏩⏩⏩⏩⏩ℹ️ℹ️ℹ️ℹ️ℹ️ℹ️ℹ️ℹ️ℹ️ℹ️ℹ️ℹ️ℹ️

Checking OS/2 achVendID.

Check ID: <FontBakeryCheck:com.google.fonts/check/vendor_id>
⚠️ InstrumentSans[wdth,wght].ttf
  • ⚠️ WARN

    OS/2 VendorID value 'NONE' is not yet recognized. If you registered it recently, then it's safe to ignore this warning message. Otherwise, you should set it to your own unique 4 character code, and register it with Microsoft at https://www.microsoft.com/typography/links/vendorlist.aspx [code: unknown]

⚠️ InstrumentSans-Italic[wdth,wght].ttf
  • ⚠️ WARN

    OS/2 VendorID value 'NONE' is not yet recognized. If you registered it recently, then it's safe to ignore this warning message. Otherwise, you should set it to your own unique 4 character code, and register it with Microsoft at https://www.microsoft.com/typography/links/vendorlist.aspx [code: unknown]

Check for codepoints not covered by METADATA subsets.

Check ID: <FontBakeryCheck:com.google.fonts/check/metadata/unreachable_subsetting>
⚠️ InstrumentSans[wdth,wght].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+02C7 CARON: try adding one of: canadian-aboriginal, tifinagh
    • U+02D8 BREVE: try adding canadian-aboriginal
    • U+02D9 DOT ABOVE: try adding canadian-aboriginal
    • U+02DB OGONEK: try adding canadian-aboriginal
    • U+02DD DOUBLE ACUTE ACCENT: not included in any glyphset definition
    • U+0300 COMBINING GRAVE ACCENT: try adding one of: coptic, cherokee, tai-le
    • U+0301 COMBINING ACUTE ACCENT: try adding one of: coptic, cherokee, tai-le, tifinagh
    • U+0302 COMBINING CIRCUMFLEX ACCENT: try adding one of: coptic, cherokee, tifinagh
    • U+0303 COMBINING TILDE: not included in any glyphset definition
    • U+0304 COMBINING MACRON: try adding one of: coptic, cherokee, gothic, tifinagh
    • U+0306 COMBINING BREVE: try adding tifinagh
    • U+0307 COMBINING DOT ABOVE: try adding one of: coptic, malayalam, canadian-aboriginal, tai-le, tifinagh
    • U+0308 COMBINING DIAERESIS: try adding one of: coptic, gothic, tai-le
    • U+030A COMBINING RING ABOVE: not included in any glyphset definition
    • U+030B COMBINING DOUBLE ACUTE ACCENT: try adding cherokee
    • U+030C COMBINING CARON: try adding one of: cherokee, tai-le
    • U+0312 COMBINING TURNED COMMA ABOVE: not included in any glyphset definition
    • U+0326 COMBINING COMMA BELOW: not included in any glyphset definition
    • U+0327 COMBINING CEDILLA: not included in any glyphset definition
    • U+0328 COMBINING OGONEK: not included in any glyphset definition
    • U+2030 PER MILLE SIGN: not included in any glyphset definition
    • U+2190 LEFTWARDS ARROW: not included in any glyphset definition
    • U+2192 RIGHTWARDS ARROW: not included in any glyphset definition
    • U+2194 LEFT RIGHT ARROW: not included in any glyphset definition
    • U+2195 UP DOWN ARROW: not included in any glyphset definition
    • U+2196 NORTH WEST ARROW: not included in any glyphset definition
    • U+2197 NORTH EAST ARROW: not included in any glyphset definition
    • U+2198 SOUTH EAST ARROW: not included in any glyphset definition
    • U+2199 SOUTH WEST ARROW: 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, menu [code: unreachable-subsetting]

⚠️ InstrumentSans-Italic[wdth,wght].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+02C7 CARON: try adding one of: canadian-aboriginal, tifinagh
    • U+02D8 BREVE: try adding canadian-aboriginal
    • U+02D9 DOT ABOVE: try adding canadian-aboriginal
    • U+02DB OGONEK: try adding canadian-aboriginal
    • U+02DD DOUBLE ACUTE ACCENT: not included in any glyphset definition
    • U+0300 COMBINING GRAVE ACCENT: try adding one of: coptic, cherokee, tai-le
    • U+0301 COMBINING ACUTE ACCENT: try adding one of: coptic, cherokee, tai-le, tifinagh
    • U+0302 COMBINING CIRCUMFLEX ACCENT: try adding one of: coptic, cherokee, tifinagh
    • U+0303 COMBINING TILDE: not included in any glyphset definition
    • U+0304 COMBINING MACRON: try adding one of: coptic, cherokee, gothic, tifinagh
    • U+0306 COMBINING BREVE: try adding tifinagh
    • U+0307 COMBINING DOT ABOVE: try adding one of: coptic, malayalam, canadian-aboriginal, tai-le, tifinagh
    • U+0308 COMBINING DIAERESIS: try adding one of: coptic, gothic, tai-le
    • U+030A COMBINING RING ABOVE: not included in any glyphset definition
    • U+030B COMBINING DOUBLE ACUTE ACCENT: try adding cherokee
    • U+030C COMBINING CARON: try adding one of: cherokee, tai-le
    • U+0312 COMBINING TURNED COMMA ABOVE: not included in any glyphset definition
    • U+0326 COMBINING COMMA BELOW: not included in any glyphset definition
    • U+0327 COMBINING CEDILLA: not included in any glyphset definition
    • U+0328 COMBINING OGONEK: not included in any glyphset definition
    • U+2030 PER MILLE SIGN: not included in any glyphset definition
    • U+2190 LEFTWARDS ARROW: not included in any glyphset definition
    • U+2192 RIGHTWARDS ARROW: not included in any glyphset definition
    • U+2194 LEFT RIGHT ARROW: not included in any glyphset definition
    • U+2195 UP DOWN ARROW: not included in any glyphset definition
    • U+2196 NORTH WEST ARROW: not included in any glyphset definition
    • U+2197 NORTH EAST ARROW: not included in any glyphset definition
    • U+2198 SOUTH EAST ARROW: not included in any glyphset definition
    • U+2199 SOUTH WEST ARROW: 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, menu [code: unreachable-subsetting]

Is there kerning info for non-ligated sequences?

Check ID: <FontBakeryCheck:com.google.fonts/check/kerning_for_non_ligated_sequences>
⚠️ InstrumentSans[wdth,wght].ttf
  • ⚠️ WARN

    GPOS table lacks kerning info for the following non-ligated sequences:

    - f + f
    
    - f + i
    
    - i + f
    
    - f + l
    
    - l + i
    
    - i + l
    
    - w + w
    
    - hyphen + greater
    
    - less + hyphen [code: lacks-kern-info]
    
⚠️ InstrumentSans-Italic[wdth,wght].ttf
  • ⚠️ WARN

    GPOS table lacks kerning info for the following non-ligated sequences:

    - f + f
    
    - f + i
    
    - i + f
    
    - f + l
    
    - l + i
    
    - i + l
    
    - w + w
    
    - hyphen + greater
    
    - less + hyphen [code: lacks-kern-info]
    

A static fonts directory with at least two fonts must accompany variable fonts

Check ID: <FontBakeryCheck:com.google.fonts/check/repo/vf_has_static_fonts>
⚠️ InstrumentSans[wdth,wght].ttf
  • ⚠️ WARN

    Please consider adding a subdirectory called "static/" and including in it static font files. [code: missing]

⚠️ InstrumentSans-Italic[wdth,wght].ttf
  • ⚠️ WARN

    Please consider adding a subdirectory called "static/" and including in it static font files. [code: missing]

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

Check ID: <FontBakeryCheck:com.google.fonts/check/description/family_update>
⚠️ InstrumentSans-Italic[wdth,wght].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]

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

Check ID: <FontBakeryCheck:com.google.fonts/check/meta/script_lang_tags>
⚠️ InstrumentSans[wdth,wght].ttf
  • ⚠️ WARN

    This font file does not have a 'meta' table. [code: lacks-meta-table]

⚠️ InstrumentSans-Italic[wdth,wght].ttf
  • ⚠️ WARN

    This font file does not have a 'meta' table. [code: lacks-meta-table]

Section: Universal

💥💥⚠️⚠️⚠️⏩⏩⏩⏩⏩⏩⏩⏩⏩⏩ℹ️ℹ️ℹ️ℹ️

Glyph names are all valid?

Check ID: <FontBakeryCheck:com.google.fonts/check/valid_glyphnames>
⚠️ InstrumentSans[wdth,wght].ttf
  • ⚠️ WARN

    The following glyph names may be too long for some legacy systems which may expect a maximum 31-characters length limit: periodcentered.loclCAT.case.ss01 [code: legacy-long-names]

⚠️ InstrumentSans-Italic[wdth,wght].ttf
  • ⚠️ WARN

    The following glyph names may be too long for some legacy systems which may expect a maximum 31-characters length limit: periodcentered.loclCAT.case.ss01 [code: legacy-long-names]

Detect any interpolation issues in the font.

Check ID: <FontBakeryCheck:com.google.fonts/check/interpolation_issues>
⚠️ InstrumentSans-Italic[wdth,wght].ttf
  • ⚠️ WARN

    Interpolation issues were found in the font: - Contour 2 start point differs in glyph 'perthousand.tf' between location <fontTools.ttLib.ttGlyphSet._TTGlyphSetGlyf object at 0x1073b4f10> and location <fontTools.ttLib.ttGlyphSet._TTGlyphSetGlyf object at 0x10736cee0>

    - Contour 6 start point differs in glyph 'perthousand.tf' between location <fontTools.ttLib.ttGlyphSet._TTGlyphSetGlyf object at 0x1073b4f10> and location <fontTools.ttLib.ttGlyphSet._TTGlyphSetGlyf object at 0x10736cee0> [code: interpolation-issues]
    

Check accent of Lcaron, dcaron, lcaron, tcaron (derived from com.google.fonts/check/alt_caron)

Check ID: <FontBakeryCheck:com.google.fonts/check/alt_caron:googlefonts>
💥 InstrumentSans[wdth,wght].ttf
  • 💥 ERROR

    Failed with TypeError: cannot unpack non-iterable float object

💥 InstrumentSans-Italic[wdth,wght].ttf
  • 💥 ERROR

    Failed with TypeError: cannot unpack non-iterable float object

Section: Shaping Checks

⚠️⚠️⚠️⚠️⏩⏩⏩⏩⏩⏩

Ensure dotted circle glyph is present and can attach marks.

Check ID: <FontBakeryCheck:com.google.fonts/check/dotted_circle>
⚠️ InstrumentSans[wdth,wght].ttf
  • ⚠️ WARN

    No dotted circle glyph present [code: missing-dotted-circle]

⚠️ InstrumentSans-Italic[wdth,wght].ttf
  • ⚠️ WARN

    No dotted circle glyph present [code: missing-dotted-circle]

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

Check ID: <FontBakeryCheck:com.google.fonts/check/soft_dotted>
⚠️ InstrumentSans[wdth,wght].ttf
  • ⚠️ WARN

    The dot of soft dotted characters should disappear in other cases, for example: ĩ̦ ĭ̦ i̦̇ i̦̊ i̦̋ ǐ̦ i̦̒ j̦̀ j̦́ ĵ̦ j̦̃ j̦̄ j̦̆ j̦̇ j̦̈ j̦̊ j̦̋ ǰ̦ j̦̒ į̦̀

    Your font fully covers the following languages that require the soft-dotted feature: Dutch (Latn, 31,709,104 speakers).

    Your font does not cover the following languages that require the soft-dotted feature: Aghem (Latn, 38,843 speakers), Belarusian (Cyrl, 10,064,517 speakers), Basaa (Latn, 332,940 speakers), Lithuanian (Latn, 2,357,094 speakers), Igbo (Latn, 27,823,640 speakers), Ukrainian (Cyrl, 29,273,587 speakers), Navajo (Latn, 166,319 speakers). [code: soft-dotted]

⚠️ InstrumentSans-Italic[wdth,wght].ttf
  • ⚠️ WARN

    The dot of soft dotted characters should disappear in other cases, for example: ĩ̦ ĭ̦ i̦̇ i̦̊ i̦̋ ǐ̦ i̦̒ j̦̀ j̦́ ĵ̦ j̦̃ j̦̄ j̦̆ j̦̇ j̦̈ j̦̊ j̦̋ ǰ̦ j̦̒ į̦̀

    Your font fully covers the following languages that require the soft-dotted feature: Dutch (Latn, 31,709,104 speakers).

    Your font does not cover the following languages that require the soft-dotted feature: Aghem (Latn, 38,843 speakers), Igbo (Latn, 27,823,640 speakers), Navajo (Latn, 166,319 speakers), Lithuanian (Latn, 2,357,094 speakers), Belarusian (Cyrl, 10,064,517 speakers), Basaa (Latn, 332,940 speakers), Ukrainian (Cyrl, 29,273,587 speakers). [code: soft-dotted]