[QGIS-Developer] Python expression function

Siki Zoltan siki at agt.bme.hu
Wed May 17 23:09:33 PDT 2017

Dear Developers,

I found some strange behaviour of Python expression functions if variable 
length parameter list is given (e.g args=-1).
If there is a NULL value among the parameters the function is not called.
See the discussion on

If it a feature or a bug?


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