matcher text doesn't work for children structural elements

[yshavit]

e.g. > - foo should match any block quote that has the text - foo, which includes:

> - foo bar

But it doesn't -- I think because StringMatcher::matches_any doesn't render structural elements.

I think I actually did that on purpose, so that for inlined elements, the matcher works on the displayed text, not the markdown:

hello _world_

hello world

... would match against hello world.

But maybe that's not a good idea, or isn't sufficient.

[yshavit]

Kicking this out of the 1.0-beta milestone, as I'm not sure what I even want to do in this case.

[yshavit]

Relates to #248 a bit

[yshavit]

In the general case, this is too fraught. I don't want to start guessing whether > - is structural or is expecting to match against a literal - foo.

But maybe > - foo should be two structural things in a row, so basically > * | - foo? That would make sense!

In the short term, maybe I should at least just warn when I detect something like that.