Hairlines not properly exported with cairo-pdf / cairo-svg?

[yuhuu gmx de]

Hi,

when using cairo-pdf or cairo-svg export-filters and also when printing from within dia, all lines with a 
line width between 0.00 and 0.05cm appear with the same thickness of 0.05cm. On a printout this is way too 
much for a "hairline".
Using the other svg-export-filters, hairlines are exported as they should so line widths of 0.00 vs 0.01 vs 
0.03 vs 0.05 can be easily differentiated.

So my question:
There seems to be a kind of minimum line width limit in the context of cairo exports. Can this anyhow be 
"screwed down" to make the hairlines appear properly in pdfs and printouts? Or am I the only one having this 
problem?

Thanks and regards

Ferd
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