[PATCH] manual: Document compiler and memory barriers

[Florian Weimer]

* Rafal Luzynski:

> 12.12.2019 13:41 Florian Weimer <fweimer@redhat.com> wrote:
>> 
>> * Rafal Luzynski:
>> 
>> > [...]
>> > AFAIK "e.g.," should be "e.g.,@:" to avoid a long space which should
>> > normally be used between sentences.
>> 
>> I think the Texinfo manual is incomplete.  Clearly this does not happen
>> for all such periods, only those that are followed by whitespace in some
>> sense.  It's not easy to infer this from the Texinfo sources, but I
>> think that . ? ! followed by any of " ' ) ] (, possibly with repeats,
>> followed by whitespace causes that whitespace to be widened.  So “e.g.,”
>> should be fine on its own.
>
> I am not an expert but I was told this here:
>
> https://sourceware.org/ml/libc-alpha/2017-10/msg01302.html
>
> Also I think I did some tests by that time and indeed there was a difference
> in the PDF version.  But maybe my memory is bad.

I just tried it, and I don't see a difference in following whitespace
between “e.g.,” and e.g.,@:”.

Thanks,
Florian