https://bugzilla.wikimedia.org/show_bug.cgi?id=25645
Summary: Improve decision when to render a formula as HTML
Product: MediaWiki extensions
Version: any
Platform: All
OS/Version: All
Status: NEW
Severity: enhancement
Priority: Normal
Component: texvc
AssignedTo: wikibugs-l@lists.wikimedia.org
ReportedBy: m...@pberndt.com
PNG rendering tends to produce quite unreadable text as the fonts (especially
font sizes) of text and formulas don't match.
Unfortunately enforcing PNG- or HTML-rendering does not help: The setting "HTML
if very simple or else PNG" does render some pretty simple formulas (like $D_f
\subseteq \R$) as images while "HTML if possible or else PNG" produces HTML for
some formulas which clearly look better when rendered as an image, like
$X_1(u,v) = X_u(u,v) = \tfrac{\partial X}{\partial u}(u,v) = DX_{(u,v)}(e_1)$
I suggest implementing one of the following:
* Implement a better mechanism to decide if a formula can be rendered as HTML.
IMO sub-/superscript is quite readable in HTML-View, while multiline formulas
(Fractions, Cases, Text above equal signs, ..) look better as PNGs
* Use HTML for scriptstyle math per default unless it contains fractions
* Add an attribute to the <math> tag so that authors can decide how to display
the formula: "text" math is rendered as HTML while "display" formulas are
rendered as PNGs in displaystyle and inserted into a separate line, slightly
indented (As if one wrote "\n:<math>..</math>" in WP)
The latter would also improve semantics, which (I guess) would allow for
simpler integration of math rendering with the PDF-Extension.
The problem lately led to multiple discussions in German WP regarding whether
to use TeX for inline math at all, so I'd appreciate a quick (technical)
solution :-)
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