<p:terminal> some characters not picked up

[jakst685]

Using:
pf-3.0.M2
jsf-2.0
gf-3.1.1

Some characters, like '+' and '&' are ignored or replaced by blankspace when "injected" as parameters to the handleCommand() method bound to the <p:terminal> component. I guess it goes through some regexp in the jQuery lib which replaces those characters before the handleCommand() method. I just want to know if this is a feature or possible defect or if this can be somehow avoided.
It is reproducable in the Showcase Lab.
Regards
Jakob