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
0 6 23 115 15 306
0% 2% 7% 34% 4% 89%

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

🔥🔥🔥🔥⚠️⚠️⚠️⚠️⚠️⚠️⚠️⚠️⚠️⚠️⚠️⚠️⚠️⏩⏩⏩⏩⏩⏩⏩⏩⏩⏩⏩⏩⏩⏩⏩⏩⏩⏩⏩⏩⏩⏩⏩⏩⏩⏩⏩⏩⏩⏩⏩⏩⏩⏩⏩⏩⏩⏩⏩⏩⏩⏩⏩⏩⏩⏩ℹ️ℹ️ℹ️ℹ️ℹ️ℹ️ℹ️ℹ️ℹ️ℹ️ℹ️

Check Google Fonts glyph coverage.

Check ID: <FontBakeryCheck:com.google.fonts/check/glyph_coverage>
🔥 Mate-Regular.ttf
  • 🔥 FAIL

    Missing required codepoints:

    - 0x1E9E (LATIN CAPITAL LETTER SHARP S)
    

    [code: missing-codepoints]

🔥 Mate-Italic.ttf
  • 🔥 FAIL

    Missing required codepoints:

    - 0x1E9E (LATIN CAPITAL LETTER SHARP S)
    

    [code: missing-codepoints]

Check for codepoints not covered by METADATA subsets.

Check ID: <FontBakeryCheck:com.google.fonts/check/metadata/unreachable_subsetting>
⚠️ Mate-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+02C7 CARON: try adding one of: tifinagh, canadian-aboriginal
    • 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, tai-le, cherokee
    • U+0301 COMBINING ACUTE ACCENT: try adding one of: coptic, tai-le, tifinagh, cherokee
    • U+0302 COMBINING CIRCUMFLEX ACCENT: try adding one of: coptic, tifinagh, cherokee
    • U+0303 COMBINING TILDE: not included in any glyphset definition
    • U+0304 COMBINING MACRON: try adding one of: coptic, tifinagh, gothic, cherokee
    • U+0306 COMBINING BREVE: try adding tifinagh
    • U+0307 COMBINING DOT ABOVE: try adding one of: coptic, malayalam, tifinagh, canadian-aboriginal, tai-le
    • U+0308 COMBINING DIAERESIS: try adding one of: coptic, tai-le, gothic
    • 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: tai-le, cherokee
    • 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+0394 GREEK CAPITAL LETTER DELTA: try adding greek
    • U+03A9 GREEK CAPITAL LETTER OMEGA: try adding greek
    • U+03BC GREEK SMALL LETTER MU: try adding greek
    • U+03C0 GREEK SMALL LETTER PI: try adding greek
    • U+2021 DOUBLE DAGGER: not included in any glyphset definition
    • U+2030 PER MILLE SIGN: not included in any glyphset definition
    • U+2126 OHM SIGN: not included in any glyphset definition
    • U+212E ESTIMATED SYMBOL: not included in any glyphset definition
    • U+2202 PARTIAL DIFFERENTIAL: not included in any glyphset definition
    • U+2206 INCREMENT: not included in any glyphset definition
    • U+220F N-ARY PRODUCT: not included in any glyphset definition
    • U+2211 N-ARY SUMMATION: not included in any glyphset definition
    • U+221A SQUARE ROOT: not included in any glyphset definition
    • U+221E INFINITY: not included in any glyphset definition
    • U+222B INTEGRAL: not included in any glyphset definition
    • U+2248 ALMOST EQUAL TO: not included in any glyphset definition
    • U+2260 NOT EQUAL TO: not included in any glyphset definition
    • U+2264 LESS-THAN OR EQUAL TO: not included in any glyphset definition
    • U+2265 GREATER-THAN OR EQUAL TO: not included in any glyphset definition
    • U+25CA LOZENGE: not included in any glyphset definition
    • U+F8FF : not included in any glyphset definition
    • U+FB01 LATIN SMALL LIGATURE FI: not included in any glyphset definition
    • U+FB02 LATIN SMALL LIGATURE FL: 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]

⚠️ Mate-Italic.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: tai-le, cherokee, coptic
    • U+0301 COMBINING ACUTE ACCENT: try adding one of: tai-le, cherokee, coptic, tifinagh
    • U+0302 COMBINING CIRCUMFLEX ACCENT: try adding one of: cherokee, coptic, tifinagh
    • U+0303 COMBINING TILDE: not included in any glyphset definition
    • U+0304 COMBINING MACRON: try adding one of: tifinagh, cherokee, coptic, gothic
    • U+0306 COMBINING BREVE: try adding tifinagh
    • U+0307 COMBINING DOT ABOVE: try adding one of: coptic, malayalam, tifinagh, tai-le, canadian-aboriginal
    • U+0308 COMBINING DIAERESIS: try adding one of: tai-le, coptic, gothic
    • 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: tai-le, cherokee
    • 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+0394 GREEK CAPITAL LETTER DELTA: try adding greek
    • U+03A9 GREEK CAPITAL LETTER OMEGA: try adding greek
    • U+03BC GREEK SMALL LETTER MU: try adding greek
    • U+03C0 GREEK SMALL LETTER PI: try adding greek
    • U+2021 DOUBLE DAGGER: not included in any glyphset definition
    • U+2030 PER MILLE SIGN: not included in any glyphset definition
    • U+2126 OHM SIGN: not included in any glyphset definition
    • U+212E ESTIMATED SYMBOL: not included in any glyphset definition
    • U+2202 PARTIAL DIFFERENTIAL: not included in any glyphset definition
    • U+2206 INCREMENT: not included in any glyphset definition
    • U+220F N-ARY PRODUCT: not included in any glyphset definition
    • U+2211 N-ARY SUMMATION: not included in any glyphset definition
    • U+221A SQUARE ROOT: not included in any glyphset definition
    • U+221E INFINITY: not included in any glyphset definition
    • U+222B INTEGRAL: not included in any glyphset definition
    • U+2248 ALMOST EQUAL TO: not included in any glyphset definition
    • U+2260 NOT EQUAL TO: not included in any glyphset definition
    • U+2264 LESS-THAN OR EQUAL TO: not included in any glyphset definition
    • U+2265 GREATER-THAN OR EQUAL TO: not included in any glyphset definition
    • U+25CA LOZENGE: not included in any glyphset definition
    • U+F8FF : not included in any glyphset definition
    • U+FB01 LATIN SMALL LIGATURE FI: not included in any glyphset definition
    • U+FB02 LATIN SMALL LIGATURE FL: 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]

Copyright notice on METADATA.pb should not contain 'Reserved Font Name'.

Check ID: <FontBakeryCheck:com.google.fonts/check/metadata/reserved_font_name>
⚠️ Mate-Regular.ttf
  • ⚠️ WARN

    METADATA.pb: copyright field ("Copyright 2011 The Mate Project Authors (https://github.com/etunni/mate) with Reserved Font Name "Mate"") contains "Reserved Font Name". This is an error except in a few specific rare cases. [code: rfn]

⚠️ Mate-Italic.ttf
  • ⚠️ WARN

    METADATA.pb: copyright field ("Copyright 2011 The Mate Project Authors (https://github.com/etunni/mate) with Reserved Font Name "Mate"") contains "Reserved Font Name". This is an error except in a few specific rare cases. [code: rfn]

Are there caret positions declared for every ligature?

Check ID: <FontBakeryCheck:com.google.fonts/check/ligature_carets>
⚠️ Mate-Regular.ttf
  • ⚠️ WARN

    This font lacks caret positioning values for these ligature glyphs: - dolar.alt

    [code: incomplete-caret-pos-data]

Is there kerning info for non-ligated sequences?

Check ID: <FontBakeryCheck:com.google.fonts/check/kerning_for_non_ligated_sequences>
⚠️ Mate-Regular.ttf
  • ⚠️ WARN

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

    - U + S
    
    - S + dollar
    
    - dollar + dollar
    
    - dollar + S
    
    - dollar + s
    
    - s + s
    
    - s + dollar
    
    - f + i
    
    - i + l
    
    - u + S [code: lacks-kern-info]
    
⚠️ Mate-Italic.ttf
  • ⚠️ WARN

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

    - f + i
    
    - i + l [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>
⚠️ Mate-Regular.ttf
  • ⚠️ WARN

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

⚠️ Mate-Italic.ttf
  • ⚠️ WARN

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

Ensure METADATA.pb does not use escaped strings.

Check ID: <FontBakeryCheck:com.google.fonts/check/metadata/escaped_strings>
🔥 Mate-Regular.ttf
  • 🔥 FAIL

    Found escaped chars at 'Copyright 2011 The Mate Project Authors (https://github.com/etunni/mate) with Reserved Font Name '. Please use an unicode string instead. [code: escaped-strings]

  • 🔥 FAIL

    Found escaped chars at 'Copyright 2011 The Mate Project Authors (https://github.com/etunni/mate) with Reserved Font Name '. Please use an unicode string instead. [code: escaped-strings]

🔥 Mate-Italic.ttf
  • 🔥 FAIL

    Found escaped chars at 'Copyright 2011 The Mate Project Authors (https://github.com/etunni/mate) with Reserved Font Name '. Please use an unicode string instead. [code: escaped-strings]

  • 🔥 FAIL

    Found escaped chars at 'Copyright 2011 The Mate Project Authors (https://github.com/etunni/mate) with Reserved Font Name '. Please use an unicode string instead. [code: escaped-strings]

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>
⚠️ Mate-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]

⚠️ Mate-Italic.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>
⚠️ Mate-Regular.ttf
  • ⚠️ WARN

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

⚠️ Mate-Italic.ttf
  • ⚠️ WARN

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

Section: Universal

🔥🔥⚠️⚠️⚠️⚠️⚠️⚠️⏩⏩⏩⏩⏩⏩⏩⏩⏩⏩ℹ️ℹ️ℹ️ℹ️

Font contains '.notdef' as its first glyph?

Check ID: <FontBakeryCheck:com.google.fonts/check/mandatory_glyphs>
🔥 Mate-Regular.ttf
  • 🔥 FAIL

    The '.notdef' glyph should contain a drawing, but it is blank. [code: notdef-is-blank]

🔥 Mate-Italic.ttf
  • 🔥 FAIL

    The '.notdef' glyph should contain a drawing, but it is blank. [code: notdef-is-blank]

Each font in set of sibling families must have the same set of vertical metrics values.

Check ID: <FontBakeryCheck:com.google.fonts/check/superfamily/vertical_metrics>
⚠️ Mate-Regular.ttf
  • ⚠️ WARN

    usWinAscent is not the same across the super-family: Mate: 1041 Mate Italic: 1041 Mate SC: 1039 [code: superfamily-vertical-metrics]

  • ⚠️ WARN

    usWinDescent is not the same across the super-family: Mate: 307 Mate Italic: 307 Mate SC: 262 [code: superfamily-vertical-metrics]

⚠️ Mate-Italic.ttf
  • ⚠️ WARN

    usWinAscent is not the same across the super-family: Mate: 1041 Mate Italic: 1041 Mate SC: 1039 [code: superfamily-vertical-metrics]

  • ⚠️ WARN

    usWinDescent is not the same across the super-family: Mate: 307 Mate Italic: 307 Mate SC: 262 [code: superfamily-vertical-metrics]

Check font contains no unreachable glyphs

Check ID: <FontBakeryCheck:com.google.fonts/check/unreachable_glyphs>
⚠️ Mate-Regular.ttf
  • ⚠️ WARN

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

    - ethbar
    

    [code: unreachable-glyphs]

⚠️ Mate-Italic.ttf
  • ⚠️ WARN

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

    - dolar.alt
    
    - ethbar
    

    [code: unreachable-glyphs]

Check if each glyph has the recommended amount of contours.

Check ID: <FontBakeryCheck:com.google.fonts/check/contour_count>
⚠️ Mate-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: asterisk	Contours detected: 5	Expected: 1 or 4
    
    - Glyph name: p	Contours detected: 1	Expected: 2
    
    - Glyph name: thorn	Contours detected: 1	Expected: 2
    
    - Glyph name: aogonek	Contours detected: 3	Expected: 2
    
    - Glyph name: eogonek	Contours detected: 3	Expected: 2
    
    - Glyph name: Uogonek	Contours detected: 2	Expected: 1
    
    - Glyph name: uogonek	Contours detected: 2	Expected: 1
    
    - Glyph name: uni2113	Contours detected: 1	Expected: 2
    
    - Glyph name: Uogonek	Contours detected: 2	Expected: 1
    
    - Glyph name: aogonek	Contours detected: 3	Expected: 2
    
    - Glyph name: asterisk	Contours detected: 5	Expected: 1 or 4
    
    - Glyph name: eogonek	Contours detected: 3	Expected: 2
    
    - Glyph name: p	Contours detected: 1	Expected: 2
    
    - Glyph name: thorn	Contours detected: 1	Expected: 2
    
    - Glyph name: uni2113	Contours detected: 1	Expected: 2
    
    - Glyph name: uogonek	Contours detected: 2	Expected: 1
    

    [code: contour-count]

⚠️ Mate-Italic.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: asterisk	Contours detected: 5	Expected: 1 or 4
    
    - Glyph name: aogonek	Contours detected: 3	Expected: 2
    
    - Glyph name: eogonek	Contours detected: 3	Expected: 2
    
    - Glyph name: Racute	Contours detected: 2	Expected: 3
    
    - Glyph name: uni0156	Contours detected: 2	Expected: 3
    
    - Glyph name: Rcaron	Contours detected: 2	Expected: 3
    
    - Glyph name: Uogonek	Contours detected: 2	Expected: 1
    
    - Glyph name: uogonek	Contours detected: 2	Expected: 1
    
    - Glyph name: uni2113	Contours detected: 1	Expected: 2
    
    - Glyph name: notequal	Contours detected: 3	Expected: 1
    
    - Glyph name: Racute	Contours detected: 2	Expected: 3
    
    - Glyph name: Rcaron	Contours detected: 2	Expected: 3
    
    - Glyph name: Uogonek	Contours detected: 2	Expected: 1
    
    - Glyph name: aogonek	Contours detected: 3	Expected: 2
    
    - Glyph name: asterisk	Contours detected: 5	Expected: 1 or 4
    
    - Glyph name: eogonek	Contours detected: 3	Expected: 2
    
    - Glyph name: fi	Contours detected: 1	Expected: 3
    
    - Glyph name: notequal	Contours detected: 3	Expected: 1
    
    - Glyph name: uni0156	Contours detected: 2	Expected: 3
    
    - Glyph name: uni2113	Contours detected: 1	Expected: 2
    
    - Glyph name: uogonek	Contours detected: 2	Expected: 1
    

    [code: contour-count]

Section: Shaping Checks

⚠️⚠️⚠️⚠️⏩⏩⏩⏩⏩⏩

Ensure dotted circle glyph is present and can attach marks.

Check ID: <FontBakeryCheck:com.google.fonts/check/dotted_circle>
⚠️ Mate-Regular.ttf
  • ⚠️ WARN

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

⚠️ Mate-Italic.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>
⚠️ Mate-Regular.ttf
  • ⚠️ WARN

    The dot of soft dotted characters used in orthographies must disappear in the following strings: į̀ į́ į̂ į̃ į̄ į̌

    The dot of soft dotted characters should disappear in other cases, for example: i̦̇ i̦̊ i̦̋ ǐ̦ i̦̒ j̦̀ j̦́ j̦̃ j̦̄ j̦̆ j̦̇ j̦̈ j̦̊ j̦̋ ǰ̦ j̦̒ į̆ į̇ į̈ į̊

    Your font fully covers the following languages that require the soft-dotted feature: Dutch (Latn, 31,709,104 speakers), Lithuanian (Latn, 2,357,094 speakers).

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

⚠️ Mate-Italic.ttf
  • ⚠️ WARN

    The dot of soft dotted characters used in orthographies must disappear in the following strings: į̀ į́ į̂ į̃ į̄ į̌

    The dot of soft dotted characters should disappear in other cases, for example: i̦̇ i̦̊ i̦̋ ǐ̦ i̦̒ j̦̀ j̦́ j̦̃ j̦̄ j̦̆ j̦̇ j̦̈ j̦̊ j̦̋ ǰ̦ j̦̒ į̆ į̇ į̈ į̊

    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), Ukrainian (Cyrl, 29,273,587 speakers), Lithuanian (Latn, 2,357,094 speakers), Navajo (Latn, 166,319 speakers), Igbo (Latn, 27,823,640 speakers). [code: soft-dotted]