The book was typeset by the authors, so it seems unlikely.<p>K&amp;R style is clearly in evidence in source code from 1973 such as <a href="https:&#x2F;&#x2F;github.com&#x2F;dspinellis&#x2F;unix-history-repo&#x2F;blob&#x2F;Research-V3&#x2F;sys&#x2F;ken&#x2F;main.c" rel="nofollow">https:&#x2F;&#x2F;github.com&#x2F;dspinellis&#x2F;unix-history-repo&#x2F;blob&#x2F;Researc...</a>