bug#50839: 28.0.50; Odd things in comp-ctxt doc string

[Stefan Kangas]

Lars Ingebrigtsen <larsi@gnus.org> writes:

>>     (and (string-match "\n" string)
>>          (error "Contains newline: %s" string))
>>
>> Maybe this is okay as this should pretty much only be called from
>> macros?
>
> I think that should be OK.

Thanks, I've now made that change on master.