Improve IRuby display #67
Description
@zverok wrote,
Is this difference between text/html and text/plain ok? As far as I can understand, IRuby prefers to output text/html, when finds it, and it completely hides the fact that we are working with SymEngine object.
BTW, I like to do HTML representation of such kind of objects this way (look on blue-ish entities, and hover the mouse over them): basic text is as simple as possible, background+border shows "it is something more complex", tooltip shows inspect results.
See #59 (comment)