https://sourceware.org/bugzilla/show_bug.cgi?id=32073
--- Comment #19 from Jan Beulich <jbeulich at suse dot com> ---
(In reply to Michael Matz from comment #14)
> The scrubber removes whitespace between tokens of different classes, but
> retains
> whitespace between token of same class, which sometimes makes it so that
> whitespace in macro invocation does or does not separate arguments, the
> difference visible in e.g.:
>
> invoke 1 2
> invoke 1 + 2 3
But that's the whole issue: This isn't how the scrubber works. It's not
uniformly "different classes" (there's not really a proper concept of tokens
either). Boundaries between what may be numbers or identifiers are different
from boundaries between operators and alike. The original report that I started
this effort from was (iirc) something like
invoke (1) (2)
where the (pretty obviously) two arguments become just one.
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