regexp strangeness

[Kay Nick]

Hey all,

the documentation to regexp says:

'\w'
          Match any word character

what exactly is a word character (maybe even more important what isn't)?
Am I right in assuming its
[abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ]? What about non
english characters like öäßłńŚ?


And here some other strange (to me) behavior:

>> regexp("#w#","#\w#")  
ans =  1                        <- seems to work in general...
>> regexp("#d#","#\w#")
ans = [](1x0)                    <- why?

>> regexp("#d#","#\\w#")       <- so we need to double escape these
special characters... no mention of that in the help... :-(
ans =  1
>> regexp("#j#","#\\w#")       
ans =  1                        <- ok
>> regexp("#E#","#\\w#")
ans =  1                        <- ok
>> regexp("#E#","#\\w*#")
ans =  1                        <- ok
>> regexp("##","#\\w*#")
ans =  1                        <- ok
>> regexp("#.#","#\\w*#")
ans = [](1x0)                    <- why?

Especially the last one >> regexp("#.#","#\\w*#") ans = [](1x0) looks
like a bug to me. Or am I getting something wrong here?

Thanks


Kay