> To summarize: stencil expressions (expr_) currently do not contain
> information for how to place stencils with respect to others. They
> contain information passed to the backends on how to lay out
> stencils. If we adopt either Keith's patch or my first one (which I
> created before I thought this fully over), we will create one
> stencil primitive that uses the stencil's expression to influence
> layout decisions. This does not seem consistent with current
> practice and I believe we should find a solution that avoids it.
I think that Keith's (or your) patch is small enough to allow an
deviation from the `ideal' to fix a real bug. Maybe it helps to add a
remark to the source code that this stencil primitive is a temporary
hack until a better, more generic solution gets implemented.
Werner
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