Man pages matching name iquotedprintablestream in section 3bobcat:

iquotedprintablestream.3bobcat.en	debian 10 / libbobcat-dev
iquotedprintablestream.3bobcat.en	debian 11 / libbobcat-dev
iquotedprintablestream.3bobcat.en	debian 12 / libbobcat-dev