text on zero width rect leads to nans

[byorgey]

(Reported by tad.doxsee at gmail; imported from http://code.google.com/p/diagrams/issues/detail?id=90)

text "junk" # fontSize 10 <> rect 0 20 

results in nans in the svg file and the entire svg is blank in a browser. If the rect has nonzero width

text "junk" # fontSize 10 <> rect 50 20

then everything is OK.

What version of the product are you using? 0.5
On what operating system? Ubuntu 12.04
Using the Cairo backend.

[byorgey]

Hmm, what would you expect rect 0 20 to mean? Are you trying to create a horizontal "strut" (i.e. a diagram that produces no output but takes up some space)? If so, you should use strutX.

However, I do agree the behavior of rect with arguments of 0 ought to be improved; see #43.