[wrCisco]

I compiled and tried the new cli cssparser, it went almost all well and good with various pseudo-classes, pseudo-elements, at-rules, vendor-prefixed properties (these with warnings, since they are not part of the standard) and vendor-prefixed at-rules (@-o-keyframes and the likes... not likely to be used in an epub, I just had an old css for a web page with animations...).

I encountered two problems:
- it didn't recognized the "@import" rule at the beginning of the stylesheet, and it deleted the space between "import" and the subsequent "url(...);" when printing;
- (minor) it lost one level of indentation in the serialization of nested at rules, so this code

@media amzn-mobi {
  @media only screen and (max-width: 650px) {
    p:nth-of-type(2n+3)::first-letter {
      color: red;
    }
  }
  .aclass:not(.anotherclass), h1 + p > span:last-child {
    color: blue;
  }
}

became

@media amzn-mobi {
    @media only screen and (max-width: 650px) {
    p:nth-of-type(2n+3)::first-letter {
        color:red;
    }
}

.aclass:not(.anotherclass),h1 + p > span:last-child {
    color:blue;
}    
}

(it's just an example: I know this code doesn't work on mobi, and probably this feature of nested conditional group rules is not even part of the epub standard, since it's still a candidate recommendation for the w3c, but it has been supported by all major browser engines for many years now).

A heads up on the more recent version of the Sigil fork for the gumbo query integration (https://github.com/kevinhendricks/Sigil): I had to replace "#include <exception>" with "#include <stdexcept>" in Query/CParser.cpp in order to compile it on Linux.

As for the Sigil's python interface, I couldn't got it to work with a list of integers as argument for the "runInPython" method: I had to convert all the numbers to strings. Then, with a QStringList, it was easy enough... Is it expected? (Maybe I just got it all wrong with the QVariant conversions).