HTML5 spec suggests the style of <abbr> and <acronym> is:
abbr[title], acronym[title] { text-decoration: dotted underline; }
http://www.w3.org/TR/html5/rendering.html#phrasing-content-0
However, we still use:
abbr[title], acronym[title] { border-block-end: dotted 1px; }
Our style has trouble with some fonts which have large internal leading
and/or external leading (e.g., Meiryo, new Japanese font on Windows
Vista or later). With such fonts, the border-bottom is rendered too far
from the glyphs and may overlap with the next line.
Therefore, we should use the suggested style.
Blink uses same style as our current style. IE doesn't have any special
style for them (i.e., rendered like simple <span>).
The bug to change the style:
https://bugzilla.mozilla.org/show_bug.cgi?id=1157083
--
Masayuki Nakano <masay...@d-toybox.com>
Manager, Internationalization, Mozilla Japan.
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