prism.py with arguments erratically corrupts text with repeating elements

[jlu5]

Using prism 0.2.8 and WeeChat 1.3.

Certain queries like: /prism hello there hello and /prism test test testtest work properly, but only when no arguments (-r/-e/-w/etc) are specified. When this is done, some strange corruption happens to the text:

/prism -r test test testtest gives test, while /prism -r hello there hello returns nothing but a space.