FontBakery Check 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/outline_short_segments
- com.google.fonts/check/version_bump
- com.google.fonts/check/outline_semi_vertical
- com.google.fonts/check/fontdata_namecheck
- com.google.fonts/check/outline_alignment_miss
- com.google.fonts/check/ttx_roundtrip
- com.google.fonts/check/outline_colinear_vectors

Summary

💥 ERROR	☠ FATAL	🔥 FAIL	⚠️ WARN	⏩ SKIP	ℹ️ INFO	✅ PASS
2	0	3	9	52	8	164
1%	0%	1%	4%	22%	3%	69%

Meaning of check results:

💥 An ERROR is something wrong with FontBakery itself, possibly a bug.
☠ A FATAL is an extremely severe issue that must be addressed immediately.
🔥 A FAIL is a problem with the font that must be fixed.
⚠️ A WARN is something that you should consider addressing.
ℹ️ An INFO result simply prints something useful. Typically stats.
✅ A PASS means the font looks good for the given checking routine.
⏩ And a SKIP happens when the check does not apply to the given font.

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

Universal Profile Checks

🔥⚠️⚠️⚠️⏩⏩⏩⏩⏩⏩⏩⏩⏩⏩⏩⏩⏩⏩⏩⏩⏩ℹ️ℹ️

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

Check ID: <FontBakeryCheck:base_has_width>

🔥 Alata-Regular.ttf

🔥 FAIL
The following glyphs had zero advance width: - uni0326.1 (U+F6C3)
[code: zero-width-bases]

Check if each glyph has the recommended amount of contours.

Check ID: <FontBakeryCheck:contour_count>

⚠️ Alata-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: uni0228	Contours detected: 2	Expected: 1

- Glyph name: uni0229	Contours detected: 3	Expected: 2

- Glyph name: uni1E08	Contours detected: 3	Expected: 2

- Glyph name: uni1E09	Contours detected: 3	Expected: 2

- Glyph name: uni1E1C	Contours detected: 3	Expected: 2

- Glyph name: uni1E1D	Contours detected: 4	Expected: 3

- Glyph name: uni0228	Contours detected: 2	Expected: 1

- Glyph name: uni0229	Contours detected: 3	Expected: 2

- Glyph name: uni1E08	Contours detected: 3	Expected: 2

- Glyph name: uni1E09	Contours detected: 3	Expected: 2

- Glyph name: uni1E1C	Contours detected: 3	Expected: 2

- Glyph name: uni1E1D	Contours detected: 4	Expected: 3

[code: contour-count]

Check math signs have the same width.

Check ID: <FontBakeryCheck:math_signs_width>

⚠️ Alata-Regular.ttf

⚠️ WARN
The most common width is 646 among a set of 5 math glyphs. The following math glyphs have a different width, though:

Width = 647: plus, plusminus

Width = 555: equal, notequal, divide

Width = 828: logicalnot

Width = 569: minus

Width = 554: approxequal
[code: width-outliers]

Check font contains no unreachable glyphs

Check ID: <FontBakeryCheck:unreachable_glyphs>

⚠️ Alata-Regular.ttf

⚠️ WARN
The following glyphs could not be reached by codepoint or substitution rules:
```
- ij_acute
```
[code: unreachable-glyphs]

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>

⚠️ Alata-Regular.ttf

⚠️ WARN
Family metadata at /Users/simon/others-repos/fonts//ofl/alata does not have an article.
[code: lacks-article]

Metadata Checks

⚠️⏩⏩⏩ℹ️

Check for codepoints not covered by METADATA subsets.

Check ID: <FontBakeryCheck:googlefonts/metadata/unreachable_subsetting>

⚠️ Alata-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: tifinagh, coptic, math, cherokee
- U+0306 COMBINING BREVE: try adding one of: tifinagh, old-permic
- U+0307 COMBINING DOT ABOVE: try adding one of: malayalam, old-permic, coptic, tifinagh, todhri, canadian-aboriginal, math, duployan, tai-le, hebrew, syriac
- 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+030F COMBINING DOUBLE GRAVE ACCENT: not included in any glyphset definition
- U+0311 COMBINING INVERTED BREVE: try adding one of: todhri, coptic
- U+0312 COMBINING TURNED COMMA ABOVE: try adding math
- U+031B COMBINING HORN: not included in any glyphset definition
- U+0324 COMBINING DIAERESIS BELOW: try adding one of: syriac, duployan, cherokee
- U+0325 COMBINING RING BELOW: try adding syriac
- 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
- U+032D COMBINING CIRCUMFLEX ACCENT BELOW: try adding one of: syriac, sunuwar
- U+032E COMBINING BREVE BELOW: try adding syriac
- U+032F COMBINING INVERTED BREVE BELOW: try adding math
- U+0330 COMBINING TILDE BELOW: try adding one of: syriac, math, cherokee
- U+0331 COMBINING MACRON BELOW: try adding one of: thai, gothic, cherokee, tifinagh, caucasian-albanian, sunuwar, syriac
- U+0332 COMBINING LOW LINE: try adding math
- U+0335 COMBINING SHORT STROKE OVERLAY: not included in any glyphset definition
- U+0394 GREEK CAPITAL LETTER DELTA: try adding one of: math, greek, elbasan
- U+039C GREEK CAPITAL LETTER MU: try adding one of: math, greek, elbasan
- U+03A9 GREEK CAPITAL LETTER OMEGA: try adding one of: math, greek, elbasan
- U+03B4 GREEK SMALL LETTER DELTA: try adding one of: greek, math
- U+03BC GREEK SMALL LETTER MU: try adding one of: greek, math
- U+03C0 GREEK SMALL LETTER PI: try adding one of: yi, greek, math
- U+03C9 GREEK SMALL LETTER OMEGA: try adding one of: greek, math
- U+0E3F THAI CURRENCY SYMBOL BAHT: try adding thai
- U+2000 EN QUAD: try adding symbols2
- U+2001 EM QUAD: try adding symbols2
- U+2003 EM SPACE: try adding nushu
- U+2004 THREE-PER-EM SPACE: try adding symbols2
- U+2005 FOUR-PER-EM SPACE: try adding symbols2
- U+2006 SIX-PER-EM SPACE: try adding symbols2
- U+2007 FIGURE SPACE: try adding symbols2
- U+2008 PUNCTUATION SPACE: try adding symbols2
- U+200A HAIR SPACE: try adding symbols2
- U+200C ZERO WIDTH NON-JOINER: try adding one of: gujarati, tagbanwa, grantha, sharada, sinhala, arabic, bhaiksuki, hanunoo, newa, tai-viet, phags-pa, tai-tham, tamil, syloti-nagri, thaana, brahmi, chakma, khmer, tai-le, buhid, sogdian, saurashtra, mongolian, warang-citi, kaithi, rejang, sundanese, malayalam, lepcha, thai, zanabazar-square, takri, meetei-mayek, yi, masaram-gondi, oriya, avestan, kayah-li, mandaic, kannada, psalter-pahlavi, syriac, gurmukhi, limbu, tibetan, gunjala-gondi, tifinagh, tirhuta, kharoshthi, batak, buginese, devanagari, modi, nko, cham, hebrew, siddham, javanese, myanmar, balinese, hatran, pahawh-hmong, mahajani, bengali, lao, duployan, hanifi-rohingya, tagalog, khojki, new-tai-lue, khudawadi, manichaean, telugu, dogra
- U+200D ZERO WIDTH JOINER: try adding one of: gujarati, tagbanwa, grantha, sharada, sinhala, arabic, bhaiksuki, hanunoo, newa, tai-viet, phags-pa, tai-tham, tamil, syloti-nagri, thaana, brahmi, chakma, khmer, tai-le, buhid, sogdian, saurashtra, mongolian, warang-citi, kaithi, rejang, sundanese, malayalam, lepcha, thai, zanabazar-square, takri, meetei-mayek, yi, masaram-gondi, oriya, avestan, kayah-li, mandaic, kannada, psalter-pahlavi, syriac, gurmukhi, limbu, tibetan, gunjala-gondi, tifinagh, tirhuta, kharoshthi, batak, buginese, devanagari, modi, nko, cham, hebrew, siddham, javanese, myanmar, balinese, pahawh-hmong, mahajani, bengali, lao, duployan, hanifi-rohingya, old-hungarian, tagalog, khojki, new-tai-lue, khudawadi, manichaean, telugu, dogra
- U+2010 HYPHEN: try adding one of: sundanese, coptic, arabic, yi, sora-sompeng, syloti-nagri, kayah-li, kharoshthi, armenian, lisu, hebrew, cham, kaithi
- U+2011 NON-BREAKING HYPHEN: try adding one of: yi, syloti-nagri, arabic
- U+2012 FIGURE DASH: not included in any glyphset definition
- U+2015 HORIZONTAL BAR: try adding adlam
- U+201B SINGLE HIGH-REVERSED-9 QUOTATION MARK: try adding adlam
- U+2021 DOUBLE DAGGER: try adding adlam
- U+202F NARROW NO-BREAK SPACE: try adding one of: yi, phags-pa, mongolian
- U+2030 PER MILLE SIGN: try adding adlam
- U+203C DOUBLE EXCLAMATION MARK: try adding math
- U+2052 COMMERCIAL MINUS SIGN: not included in any glyphset definition
- U+205F MEDIUM MATHEMATICAL SPACE: try adding math
- U+2070 SUPERSCRIPT ZERO: try adding math
- U+2074 SUPERSCRIPT FOUR: try adding math
- U+2075 SUPERSCRIPT FIVE: try adding math
- U+2076 SUPERSCRIPT SIX: try adding math
- U+2077 SUPERSCRIPT SEVEN: try adding math
- U+2078 SUPERSCRIPT EIGHT: try adding math
- U+2079 SUPERSCRIPT NINE: try adding math
- U+2080 SUBSCRIPT ZERO: try adding math
- U+2081 SUBSCRIPT ONE: try adding math
- U+2082 SUBSCRIPT TWO: try adding math
- U+2083 SUBSCRIPT THREE: try adding math
- U+2084 SUBSCRIPT FOUR: try adding math
- U+2085 SUBSCRIPT FIVE: try adding math
- U+2086 SUBSCRIPT SIX: try adding math
- U+2087 SUBSCRIPT SEVEN: try adding math
- U+2088 SUBSCRIPT EIGHT: try adding math
- U+2089 SUBSCRIPT NINE: try adding math
- U+2105 CARE OF: try adding math
- U+2116 NUMERO SIGN: try adding cyrillic
- U+2117 SOUND RECORDING COPYRIGHT: try adding math
- U+2120 SERVICE MARK: try adding math
- U+2126 OHM SIGN: try adding math
- U+212E ESTIMATED SYMBOL: try adding math
- U+2150 VULGAR FRACTION ONE SEVENTH: try adding symbols
- U+2151 VULGAR FRACTION ONE NINTH: try adding symbols
- U+2152 VULGAR FRACTION ONE TENTH: try adding symbols
- U+2153 VULGAR FRACTION ONE THIRD: try adding symbols
- U+2154 VULGAR FRACTION TWO THIRDS: try adding symbols
- U+2155 VULGAR FRACTION ONE FIFTH: try adding symbols
- U+2156 VULGAR FRACTION TWO FIFTHS: try adding symbols
- U+2158 VULGAR FRACTION FOUR FIFTHS: try adding symbols
- U+2159 VULGAR FRACTION ONE SIXTH: try adding symbols
- U+215A VULGAR FRACTION FIVE SIXTHS: try adding symbols
- U+215B VULGAR FRACTION ONE EIGHTH: try adding symbols
- U+215C VULGAR FRACTION THREE EIGHTHS: try adding symbols
- U+215D VULGAR FRACTION FIVE EIGHTHS: try adding symbols
- U+215E VULGAR FRACTION SEVEN EIGHTHS: try adding symbols
- U+2190 LEFTWARDS ARROW: try adding one of: symbols, math
- U+2192 RIGHTWARDS ARROW: try adding one of: symbols, math
- U+2196 NORTH WEST ARROW: try adding one of: symbols, math
- U+2197 NORTH EAST ARROW: try adding one of: symbols, math
- U+2198 SOUTH EAST ARROW: try adding one of: symbols, math
- U+2199 SOUTH WEST ARROW: try adding one of: symbols, math
- U+2202 PARTIAL DIFFERENTIAL: try adding math
- U+2205 EMPTY SET: try adding math
- U+2206 INCREMENT: try adding math
- U+220F N-ARY PRODUCT: try adding math
- U+2211 N-ARY SUMMATION: try adding math
- U+2219 BULLET OPERATOR: try adding one of: yi, symbols, tai-tham, math
- U+221A SQUARE ROOT: try adding math
- U+221E INFINITY: try adding math
- U+222B INTEGRAL: try adding math
- U+2248 ALMOST EQUAL TO: try adding math
- U+2260 NOT EQUAL TO: try adding math
- U+2264 LESS-THAN OR EQUAL TO: try adding math
- U+2265 GREATER-THAN OR EQUAL TO: try adding math
- U+25CA LOZENGE: try adding one of: symbols, math
- U+25CC DOTTED CIRCLE: try adding one of: symbols, tagbanwa, sharada, hanunoo, syloti-nagri, warang-citi, kaithi, lepcha, meetei-mayek, oriya, kayah-li, psalter-pahlavi, limbu, gunjala-gondi, batak, adlam, cham, javanese, pahawh-hmong, osage, lao, armenian, manichaean, dogra, grantha, tifinagh, phags-pa, sogdian, wancho, mongolian, zanabazar-square, rejang, malayalam, music, takri, yi, masaram-gondi, mandaic, syriac, bassa-vah, devanagari, modi, bengali, canadian-aboriginal, miao, duployan, tagalog, khojki, new-tai-lue, telugu, elbasan, gujarati, sinhala, tamil, thaana, tai-tham, math, brahmi, chakma, khmer, caucasian-albanian, kharoshthi, myanmar, balinese, mende-kikakui, hanifi-rohingya, tai-viet, bhaiksuki, newa, ahom, tai-le, buhid, saurashtra, sundanese, thai, marchen, kannada, gurmukhi, soyombo, tibetan, tirhuta, buginese, nko, hebrew, siddham, old-permic, coptic, mahajani, khudawadi
- U+25FC BLACK MEDIUM SQUARE: try adding symbols
- U+27E8 MATHEMATICAL LEFT ANGLE BRACKET: try adding math
- U+27E9 MATHEMATICAL RIGHT ANGLE BRACKET: try adding math
- U+F6C3 : not included in any glyphset definition
- U+FB00 LATIN SMALL LIGATURE FF: 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
- U+FB03 LATIN SMALL LIGATURE FFI: not included in any glyphset definition
- U+FB04 LATIN SMALL LIGATURE FFL: 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, vietnamese
[code: unreachable-subsetting]

Glyphset Checks

💥

Shapes languages in all GF glyphsets.

Check ID: <FontBakeryCheck:googlefonts/glyphsets/shape_languages>

💥 Alata-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

🔥🔥⚠️⚠️ℹ️ℹ️

Does DESCRIPTION file contain broken links?

Check ID: <FontBakeryCheck:googlefonts/description/broken_links>

🔥 Alata-Regular.ttf

🔥 FAIL
The following links are broken in the description file: https://www.2xux.com/ (status code: 405)
[code: broken-links]

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>

⚠️ Alata-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>

💥 Alata-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

⚠️

Do outlines contain any jaggy segments?

Check ID: <FontBakeryCheck:outline_jaggy_segments>

⚠️ Alata-Regular.ttf

⚠️ WARN

The following glyphs have jaggy segments:

* Eng (U+014A): L<<184.0,735.0>--<184.0,594.0>>/B<<184.0,594.0>-<196.0,650.0>-<230.0,683.5>> = 12.094757077012089

* braceleft (U+007B): B<<238.5,328.0>-<216.0,306.0>-<187.0,302.0>>/B<<187.0,302.0>-<230.0,298.0>-<259.0,261.0>> = 13.167858971922941

* braceleft.case: B<<238.5,347.0>-<216.0,325.0>-<187.0,322.0>>/B<<187.0,322.0>-<230.0,318.0>-<259.0,281.0>> = 11.220686783715234

* braceright (U+007D): B<<202.0,261.0>-<231.0,298.0>-<274.0,302.0>>/B<<274.0,302.0>-<246.0,306.0>-<223.0,328.0>> = 13.444648024100703

* braceright.case: B<<202.0,301.0>-<231.0,338.0>-<274.0,342.0>>/B<<274.0,342.0>-<246.0,345.0>-<223.0,367.0>> = 11.43004923623014

* nine (U+0039): B<<380.0,269.0>-<395.0,294.0>-<404.0,304.0>>/B<<404.0,304.0>-<390.0,291.0>-<365.0,281.0>> = 5.133883900844735

* nine.lf: B<<380.0,269.0>-<395.0,294.0>-<404.0,304.0>>/B<<404.0,304.0>-<390.0,291.0>-<365.0,281.0>> = 5.133883900844735

* nine.osf: B<<380.0,108.0>-<395.0,133.0>-<404.0,143.0>>/B<<404.0,143.0>-<390.0,130.0>-<365.0,120.0>> = 5.133883900844735

* nine.tf: B<<362.0,269.0>-<377.0,294.0>-<386.0,304.0>>/B<<386.0,304.0>-<372.0,291.0>-<347.0,281.0>> = 5.133883900844735

* nine.tosf: B<<366.0,106.0>-<381.0,131.0>-<390.0,141.0>>/B<<390.0,141.0>-<376.0,128.0>-<351.0,118.0>> = 5.133883900844735

* six (U+0036): B<<262.0,450.0>-<255.0,437.0>-<250.0,432.0>>/B<<250.0,432.0>-<265.0,446.0>-<291.5,455.5>> = 1.974934010881775

* six.lf: B<<262.0,450.0>-<255.0,437.0>-<250.0,432.0>>/B<<250.0,432.0>-<265.0,446.0>-<291.5,455.5>> = 1.974934010881775

* six.osf: B<<243.5,451.0>-<236.0,437.0>-<231.0,432.0>>/B<<231.0,432.0>-<246.0,446.0>-<272.5,455.5>> = 1.974934010881775

* six.tf: B<<262.0,450.0>-<255.0,437.0>-<250.0,432.0>>/B<<250.0,432.0>-<265.0,446.0>-<291.5,455.5>> = 1.974934010881775

* six.tosf: B<<262.0,450.0>-<255.0,437.0>-<250.0,432.0>>/B<<250.0,432.0>-<265.0,446.0>-<291.5,455.5>> = 1.974934010881775

[code: found-jaggy-segments]

Font File Checks

⚠️⏩⏩⏩⏩⏩⏩⏩⏩⏩⏩ℹ️ℹ️

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

Check ID: <FontBakeryCheck:googlefonts/meta/script_lang_tags>

⚠️ Alata-Regular.ttf

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

DEPRECATION WARNING

Summary

Universal Profile Checks

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

Check if each glyph has the recommended amount of contours.

Check math signs have the same width.

Check font contains no unreachable glyphs

Article Checks

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

Metadata Checks

Check for codepoints not covered by METADATA subsets.

Glyphset Checks

Shapes languages in all GF glyphsets.

Description Checks

Does DESCRIPTION file contain broken links?

DESCRIPTION.en_us.html should end in a linebreak.

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

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

Shaping Checks

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

Outline Checks

Do outlines contain any jaggy segments?

Font File Checks

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

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