bugFree UCS Outline Fonts - Bugs: bug #51850, Insular letter issues


bug #51850: Insular letter issues

Submitted by:  David Corbett <dscorbett>
Submitted on:  Fri 25 Aug 2017 05:21:38 PM UTC  
Category:  individual character(s) Severity:  3 - Normal
Item Group:  character substitution issue Status:  None
Privacy:  Public Assigned to:  None
Open/Closed:  Open Release:  development

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Wed 28 Nov 2018 04:34:37 PM UTC, comment #2:

U+1D79 LATIN SMALL LETTER INSULAR G is missing from FreeSerif Italic, Bold, and Bold Italic variants, although exists in the regular FreeSerif font.

Phil Krylov <philkrylov>
Wed 28 Nov 2018 03:00:55 PM UTC, comment #1:

U+A765 has a couple more problems:
1) It has a diagonal stroke while the overall consensus in the discussion linked below is to maintain the horizontal stroke variant as the default and probably choose a diagonal variant using a feature, as, e.g. Junicode font does, using the same feature that is used for insular forms. At least until the diagonal variant is accepted as a separate Unicode entity.
2) It exists in FreeSerif but is missing from Italic/Bold/Bold Italic.

Phil Krylov <philkrylov>
Fri 25 Aug 2017 05:21:38 PM UTC, original submission:

notes/usage.txt is out of date with respect to the insular features.

'cv03' substitutes k with kappa. Kappa, being a Greek letter, has a different approach to serifs which does not match the other insular small letters. I suggest using kra instead.

U+A765 LATIN SMALL LETTER THORN WITH STROKE always has an insular-style descender, instead of just when 'cv03' is activated.

'cv03' decomposes some precomposed characters like ī and ō, but that has no visible effect.


⟨Ḋ Ḟ Ġ Ṡ Ṫ ḋ ḟ ġ ṡ ṫ⟩ are used in Irish so they should have insular variants.

Old-fashioned Latin uses a circumflex instead of a macron, so circumflexed vowels should have insular variants.

Modern editions of Latin poetry sometimes use breves on vowels, so such vowels should have insular variants.

E caudata (ę) was used in Latin and Irish so it should have an insular variant.

I suggest using the Old English variants of small/capital thorn when 'cv03'/'cv04' are enabled. They look noticeably different from the default glyphs used by most fonts, including FreeSerif, which is designed for Icelandic.

lat_Muncial does not look good compared to the other insular letters. Specifically, its terminals do not match the other insular letters’.

Old manuscripts often use combining letters to save space, so the combining Latin letters U+0363, U+0364, U+0365, U+0369, U+036C, U+036D, U+1DCA, U+1DD4, U+1DDA, U+1DDB, U+1DDC, U+1DDF, U+1DE4, U+1DE6, and U+1DEB should have insular variants.

Like æ, other ligatures involving a and e should be insularized: U+0153, U+1DD5, U+1DD6, U+A733, U+A735, U+A737, U+A739, U+A73B, U+A73D.

Consider an insular variant of ⟨j⟩ to match ⟨i⟩.

There are other glyph variants used in the medieval British Isles not included in FreeSerif. I am not sure if these are intentional omissions; this is why I’ve been asking about the scope of the project.

David Corbett <dscorbett>


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