bugFree UCS Outline Fonts - Bugs: bug #55117, U+1D58 MODIFIER LETTER SMALL U is...


bug #55117: U+1D58 MODIFIER LETTER SMALL U is badly positioned in FreeSerif Italic

Submitter:  Phil Krylov <philkrylov>
Submitted:  Tue 27 Nov 2018 01:04:11 PM UTC
Category:  individual character(s) Severity:  3 - Normal
Item Group:  letter positioning poor Status:  Fix posted
Privacy:  Public Assigned to:  Stevan_White
Open/Closed:  Open Release:  * development
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Wed 28 Nov 2018 04:53:13 PM UTC, comment #5: 

Probably the bug could be extended to all modifier characters - consider the behavior of U+02D9 and U+02BC here:


Considering IPA and kerning: do you think that phonetic transcription does not deserve good kerning? Do you think I need to switch off character kerning for my transcriptions (consisting not only of IPA letters but also some ASCII) to make them look consistently ugly? Do I have to bring forth an example of usage of a character in a [current] orthography of a [living] language to add kerning to that character?

Phil Krylov <philkrylov>
Wed 28 Nov 2018 03:44:40 PM UTC, comment #4: 

Thnak you, U+1D58 now looks much better! However, U+2071 superscript i not so much: cf. Avestan vāⁱti, fravāyeⁱti

Phil Krylov <philkrylov>
Tue 27 Nov 2018 09:59:12 PM UTC, comment #3: 

Oh.  We have a double misunderstanding.

Yes the superscript w is kerned -- for use in an orthography of some North American languages.

But that isn't why the superscript u looked bad: it was simply displaced.  For IPA kerning isn't appropriate.

I fixed the entire range of superscript latin letters in this face.  In SVN.

Steve White <Stevan_White>
Group administrator
Tue 27 Nov 2018 08:57:23 PM UTC, comment #2: 

Well, I mean it lacks kerning while e.g. superscript w has it. Both are used in different phonetic transcription systems. E.g. see https://www.unicode.org/L2/L2002/02141-n2419-uralic-phonetic.pdf (the document that introduced the character to Unicode)

Phil Krylov <philkrylov>
Tue 27 Nov 2018 07:44:34 PM UTC, comment #1: 

It isn't kerning -- the horizontal positioning is off.  Same for all the supescript latin letters.

Steve White <Stevan_White>
Group administrator
Tue 27 Nov 2018 01:04:11 PM UTC, original submission:  

Both on the left side (too far) and on the right side (touching the next character. E.g., try bᵘ̯ožḯ (also exposing another problem with missing anchors).

Phil Krylov <philkrylov>


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    Follow 4 latest changes.

    Date Changed by Updated Field Previous Value => Replaced by
    2018-11-27 Stevan_White StatusConfirmed Fix posted
    2018-11-27 Stevan_White StatusNone Confirmed
        Assigned toNone Stevan_White
        SummaryU+1D58 MODIFIER LETTER SMALL U has bad kerning in FreeSerif Italic U+1D58 MODIFIER LETTER SMALL U is badly positioned in FreeSerif Italic

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