[PATCH] manual: Document compiler and memory barriers

[Andreas Schwab]

On Dez 12 2019, Florian Weimer wrote:

> 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.

Only characters with \sfcode > 0 change the \spacefactor.

Andreas.

-- 
Andreas Schwab, SUSE Labs, schwab@suse.de
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