Juanjo Alvarez Martinez

The problem is probably the `@` in the `@token` (and `@type`, `@pos`, etc...) since XPath uses the `@` symbol to retrieve attribute values.

More info: the xpath library seems to be Ok and it even have a [test](https://github.com/antchfx/xpath/blob/master/xpath_test.go#L288) for this case so unless we're hitting a corner case with it with our specific...

Yeah, `_BBLFSH` it was just an example, but the user would still use `@` and it would be translated internally (would still be ugly on the fixtures). The length is...

Nope, no scaping of symbols in property names for XPath 1.0 as far as I investigated. Double quotes doesn't work either. This would also affect users, actually I found about...

@cbeauchesne FastAPI problems fixed and ready for review (also removed the do-not-merge tag).