Even though I'm having --warn-missing-arg = NO switch in AppledocSettings.plist, appledoc scripts returns the value 1.
I.e. Xcode does not show a warning up but error saying:
(null): Description for parameter 'currentDir' missing for +[FSUtils directoryContent:]!
appledoc version: 2.0.5 (build 789)
Command /bin/sh failed with exit code 1
Xcode support was patched in over existing festures, so it's not very well integrated. You have to use --exit-threshold to suppress warnings being reported, as described here.
I see. Thanks for this hint, any workaround is appreciated.