I tried `(\s|\t).*[\b\w*\s\b]`, this one is almost ok but I want also except lines with #.

```
#Name                       Type       Allowable values                        
#========================== =========  ========================================
_absolute-path-base-uri     String     -                                       
add-xml-decl                Boolean    y/n, yes/no, t/f, true/false, 1/0       

```