This one's even worse because we have a line break in the middle of a \defn:

Cv-unqualified scalar types, trivially copyable class types\iref{class}, arrays of
such types, and cv-qualified versions of these
types are collectively called \defn{trivially
copyable types}.

This means to search for all occurrences of "trivially copyable types" you need to search in the generated PDF rather than the sources.

This example also unnecessarily splits "arrays of such types" across two lines.

I wouldn't be opposed to that being changed :-)

We should decide whether "semantic line breaks" should become an editorial guideline.
Pros: see above
Cons: We can no longer press "M-q" (reformat paragraph to fit window width) in emacs to auto-reformat overlong lines. (Not that I do that frequently, because it likely adds no-op diffs to a change.)

Editorial meeting consensus: This is already the convention; we simply need to document this policy.

Added a sentence to the "Source code formatting" section of our "Specification Style Guidelines".

Thanks! Should we close this now then?

Since we're probably not doing fixes for violations unless we're editing in the vicinity, let's close this issue.