Comment 7 for bug 754572

Oh I see your point. I just tried out the mode (creating tag on the fly) you suggest and it's good.

But regarding with the tags, I think there're are the 2 problems:
1. the problem raised in this bug -- @home and @home) are different tags
2. cannot support multi-word tags, cuz the tag is separated by the space. (for example, one cannot use "normal life" as a tag name)

I think we need to restrict on the tag name a bit: by limiting the tag_name to be some non-special chars? (example of special characters: [()\//{}\[\]], so these character cannot be used as tag name)
But this cannot solve the second problem