In the linked example package.keywords file, the line: kde-base/qimageblitz-0.0.4 is missing a preceding '='. It is otherwise correctly formed. Reproducible: Always
I forgot to link directly to the package.keywords file: https://www2.mailstation.de/gitweb/?p=genkde4svn-pub.git;a=blob_plain;f=Documentation/package.keywords.4.0.0;hb=HEAD
Not the GDP's problem. Documents in /proj/ are the responsibility of those projects. Reassigning.
A sed call gone wrong, thanks for the report!