https://bugzilla.wikimedia.org/show_bug.cgi?id=49965
Web browser: ---
Bug ID: 49965
Summary: Superscripts and subscripts change line height
Product: MediaWiki
Version: unspecified
Hardware: All
OS: All
Status: UNCONFIRMED
Severity: normal
Priority: Unprioritized
Component: Skin and page rendering
Assignee: [email protected]
Reporter: [email protected]
CC: [email protected]
Classification: Unclassified
Mobile Platform: ---
When adding superscripts and/or subscripts to a text, the line height of the
line increases.
This leads to uneven line spacing between lines which
1) is very bad typographic style
2) makes it hard (if not impossible) to distinguish between spacing produced by
new paragraphs and spacing produced because of the reported issue.
3) simply looks ugly
Especially point 2) is detrimental for all Wikipedia projects since it conceals
the intended structure of the text and therefore makes texts and content harder
to understand and to follow.
I know, that this is basically a browser issue (I tested Firefox 21 as well as
Internet Explorer 10 on Windows 7 with Vector skin) and not MediaWiki's fault.
However I think we should consider adding some workaround to fix the bad
rendering of sub- and supscripts in modern browsers.
A quick fix I tested would be changing the <sup> and <sub> tags style to
include "line-height:0;". This makes texts look reasonable, with the downside
that (with the current default line height of the surrounding text) subscripts
would touch superscripts of the following line if they happened to be at the
same position (very unlikely though). This could be easily fixed by increasing
the default line-height, though.
However, I'm no specialist with CSS, so it's likely there could be a better
solution around.
I hope we can find a solution for this issue. It's especially annoying in
scientific articles on chemical, physical or mathematical topics, where many
super- and subscript are used. In some articles there are fewer lines with the
intended line height than there are with increased line height.
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