can't use word include non alphabet

[pebble8888]

It doesn't work for "struct->member" and "struct.member"

[pebble8888]

It works for "struct.member" with :Rno , :Rho and :Ro .
"struct.member" is not word, so It doesn't work for :R , :Rh and :R .

But it doesn't work yet for "struct->member" for :Ro .
I have no way to work it yet.