math inside text mode inside math mode

[rspuzio]

If one types something like "[ a=b \text{ if $c=d$} ]" into LaTeX, one gets something
like "a=b if c=d" as output. However, in Planetary/LaTeXML, one instead gets
something like "a=b if". This is causing the entry

http://planetmath.org/mobiusfunction

to no longer render properly.

[dginev]

If you paste the source of that piecewise sum:

\[
\sum_{d | n} \mu(d) = 
\begin{cases}
1 & \text{if $n = 1$}\\
0 & \text{if $n > 1$}
\end{cases}
\]

into http://latexml.mathweb.org/editor, things look as they should. Next, I checked the actual MathML in the page you linked to and there are a few irregularities with it (there shouldn't be HTML entity encoding going inside the annotation elements. The way things are now, the TeX source looks garbled). My suspicion is that the error here is rooted in the way PlanetMath send data to LaTeXML OR has been fixed in one of the newer revisions of LaTeXML.