/
.*               # Match any quantity of any character (or 
                 # none at all)
(                # group together, and capture.
    [\$#\%>~]    # match any one of the following: $#%>~
  |              # OR
    \@\w~\$      # match literal @, a word character, and $
  |              # OR
    \\\[\\e\[0m\\\] \[0m
                 # match "\[\e[0m\] [0m"
)                # end capturing / grouping.
\s?              # match a single optional whitespace
/x               # End regexp.