[Webkit-unassigned] [Bug 181829] New: Implement pseudo-scripts

bugzilla-daemon at webkit.org bugzilla-daemon at webkit.org
Thu Jan 18 20:05:29 PST 2018


https://bugs.webkit.org/show_bug.cgi?id=181829

            Bug ID: 181829
           Summary: Implement pseudo-scripts
           Product: WebKit
           Version: WebKit Nightly Build
          Hardware: Unspecified
                OS: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: MathML
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: lambda at liu.ms

>From MathML 3 spec:

> There are a number of characters in the UCS that traditionally have been taken to have a natural ‘script’ aspect. The visual presentation of these characters is similar to a script, that is, raised from the baseline, and smaller than the base font size. The degree symbol and prime characters are examples. For use in text, such characters occur in sequence with the identifier they follow, and are typically rendered using the same font. These characters are called pseudo-scripts here.

The standard suggests to use explicit script markup. However, the rendering of those characters shall be treated differently (e.g. not raised).

The list of those characters:
U+0022  QUOTATION MARK
U+0027  APOSTROPHE
U+002A  ASTERISK
U+0060  GRAVE ACCENT
U+00AA  FEMININE ORDINAL INDICATOR
U+00B0  DEGREE SIGN
U+00B2  SUPERSCRIPT TWO
U+00B3  SUPERSCRIPT THREE
U+00B4  ACUTE ACCENT
U+00B9  SUPERSCRIPT ONE
U+00BA  MASCULINE ORDINAL INDICATOR
U+2018  LEFT SINGLE QUOTATION MARK
U+2019  RIGHT SINGLE QUOTATION MARK
U+201A  SINGLE LOW-9 QUOTATION MARK
U+201B  SINGLE HIGH-REVERSED-9 QUOTATION MARK
U+201C  LEFT DOUBLE QUOTATION MARK
U+201D  RIGHT DOUBLE QUOTATION MARK
U+201E  DOUBLE LOW-9 QUOTATION MARK
U+201F  DOUBLE HIGH-REVERSED-9 QUOTATION MARK
U+2032  PRIME
U+2033  DOUBLE PRIME
U+2034  TRIPLE PRIME
U+2035  REVERSED PRIME
U+2036  REVERSED DOUBLE PRIME
U+2037  REVERSED TRIPLE PRIME
U+2057  QUADRUPLE PRIME

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