## Here is an example for manpages.
syntax man "\.[1-9]x?$"
magic "troff or preprocessor input"
comment ".\""
color green "\.(SH|SS|TH) .*$"
color brightgreen "\.(SH|SS|TH) " "\.([HIT]P)"
color brightred "\.(B[IR]?|I[BR]?|R[BI]|S[BM]) .*$"
color brightblue "\.(B[IR]?|I[BR]?|R[BI]|S[BM]) " "\.([LP]?P)$"
color magenta "\\f[BIPR]"
color yellow "\.(br|DT|RS|RE|PD)"
# Comments.
color cyan "\.?\\\".*$"
# Trailing whitespace.
color ,green "[[:space:]]+$"