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Am 18.02.2016 um 03:27 schrieb Wiktor S.:

> It may be possible that Quake was the only instance of this weird
> rep/movsl in the "wild".

I sure hope so, because the longer I think about this, the more certain 
I am it's not just weird: it's _wrong_, and it has been wrong all this time.

If that line ever worked as (probably) intended, that either

a) just so happened, by triggering bug in gas that remained undiscovered 
all this time, or

b) was achieved on purpose, by way of some trick that people since 
forgot about, and which is no longer present in the build environment, 
or was broken because that trick, too, relied on buggy behaviour.

E.g. someone might have wanted to make the assembly sources usable on 
SVR4 'as' (see "info gas machine i386 i386-options"), by defining '/' to 
expand to ' '.

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