QCommandLineParser::helpText() produces unreadable helps for long arguments

If we add one long option, say

QCommandLineOption(
     QStringList() << QStringLiteral("looooooooooooong-option") << QStringLiteral("looooong-opt-alias"),
     QStringLiteral("Some long but meaningful option description"),
     QStringLiteral("looooooooooooong-option"))

helpText produces really unureadable text. And there is no way to get all the data back to produce elegant help text.

More of it, helpText' lines are always 80 chars wide even if terminal window is wider. So the example above results in description column only 3 characters wide!

As far as I know, there is no standard for help descriptions. Some programs (clang) always starts option description output on 27'th column. If option name is long, description goes to next line. Some (gcc) starts after option name, but continues on next line from 28'th column. Either way theirs help is readable even for options with long names (or long synonym list).