\compose{\line(100)}{\rm striked text}
which produces
You just have to manually play till you get that 100-pixel width right.
No. I don't think "canonical TeX" supports it in math mode either, but feel free to correct me if I'm wrong about that. Either way, it would be easy to implement a \strike{whatever} command in mimetex, but I don't have the spare time to deal with it right now. In the meantime, if you really want to, you can fake it using
\compose{\line(100)}{\rm striked text}
which produces
%7D%7B%5Crm%20striked%20text%7D)
You just have to manually play till you get that 100-pixel width right.
\compose{\line(100)}{\rm striked text}
which produces
You just have to manually play till you get that 100-pixel width right.