[stringbuf.virtuals] has "Returns:" inside Effects:

[jwakely]

We could change the Effects: to say something like "The result is c" and then change the Returns: to:

Returns: The result as described above, or traits::eof() to indicate failure.

[jwakely]

Or follow the style of the overflow function right below it, so the Effects: say "Signals success by returning c."

[jwakely]

Same issue in [filebuf.virtuals] and [depr.strstreambuf.virtuals].

[jwakely]

I've just re-noticed the same thing in [filebuf.virtuals], I'll fix it the same way.