w3c / w3c/mathml-core

Vertical alignment of prime

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Dominant language
HTML
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56
Forks
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Description

In a TeX expression such as $f_c'$, the prime is treated as a superscript. A prime can be rendered using character , U+2032. But the bottom of the ink in that glyph is higher than in characters used in other superscripts, such the "2" used in $x^2$.

If I place U+2032 into the second child of a <msup> element, Firefox lowers the glyph so that the prime is at the correct vertical alignment. At this date, Chrome Canary does no such adjustment.

Which behavior is correct? MathML-Core is silent on this question. I think the standard behavior should be spelled out.

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Research direction

Start with the MathML-Core draft and the issue’s Firefox and Chrome Canary behavior comparison. Determine whether the standard should define vertical alignment for U+2032 in an msup element, and document the expected behavior and relevant wording when the specification is updated.

Written by the indexing model from the issue text.

Assessment

Tech stack
tex
Domain
documentation, web-dev
Issue type
Documentation
Difficulty
5/5
Estimated time
Over a week
Activity status
Stale
Clarity
Needs clarification
Newbie friendliness
35/100

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