sparse(speye(2), 1)

[David Bateman]

Kim Hansen wrote:
> This looks like a bug:
> ===========================
> octave:8> sparse(speye (2),1)
> warning: implicit conversion from real sparse matrix to real scalar
> ans = Compressed Column Sparse (rows = 1, cols = 1, nnz = 0)
> 
> octave:9>
> ===========================
> 
> If I wanted to add tests in order to avoid these bugs to creep back
> into the code later, where should I put them?
> 

I'd say something like the attached is needed to address this. It
doesn't use is_scalar_type to check if the value is scalar, since as you
previously pointed out "sparse(sparse(1),1)" is legal.

D.
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