[mew-int 2732] hyper estraier search

Hi again,

two questions on using hyper estraier with mew:
1) is wildcard search possible? Hyper Estraier user's guide at 
hyperestraier.sourceforge.net says the wildcard symbol is "*". 
However, when I press "k /", and put in "pattern*" as Hyper Estraier 
virtual pattern, I get results for the literal string "pattern*", 
instead of "pattern<anything here>".

I've noticed I can get substring matches when searching header fields 
like to/from/subject/head without needing to specify wildcard symbols 
(i.e. to=atter also matches any of {"pattern", "patter", "patterns", 
....}. Is there any way to search the message body like this?

2) can I use "OR" and "NOT" and in Hyper Estraier virtual patterns, 
as the manual explains for mewl patterns? If I put "!" or "|" in the 
pattern, Mew replies with "filter not is invalid", resp. "filter or 
is invalid".

kind regards,

Thomas