## Here is an example for awk.
##
syntax "awk" "\.awk$"
## records
icolor brightred "\$[0-9A-Z_!@#$*?-]+"
## awk-set variables
color red "\<(ARGC|ARGIND|ARGV|BINMODE|CONVFMT|ENVIRON|ERRNO|FIELDWIDTHS)\>"
color red "\<(FILENAME|FNR|FS|IGNORECASE|LINT|NF|NR|OFMT|OFS|ORS)\>"
color red "\<(PROCINFO|RS|RT|RSTART|RLENGTH|SUBSEP|TEXTDOMAIN)\>"
## function declarations and special patterns
color brightgreen "\<(function|extension|BEGIN|END)\>"
## operators
color green "(\{|\}|\(|\)|\;|\]|\[|\\|<|>|!|=|&|\+|-|\*|%|/|\?:|\^|\|)"
## flow control
color brightyellow "\<(for|if|while|do|else|in|delete|exit)\>"
color brightyellow "\<(break|continue|return)\>"
## I/O statements
color brightgreen "\<(close|getline|next|nextfile|print|printf)\>"
color brightgreen "\<(system|fflush)\>"
## standard functions
color magenta "\<(atan2|cos|exp|int|log|rand|sin|sqrt|srand)\>"
color magenta "\<(asort|asorti|gensub|gsub|index|length|match)\>"
color magenta "\<(split|sprintf|strtonum|sub|substr|tolower|toupper)\>"
color magenta "\<(mktime|strftime|systime)\>"
color magenta "\<(and|compl|lshift|or|rshift|xor)\>"
color magenta "\<(bindtextdomain|dcgettext|dcngettext)\>"

##
## String highlighting. You will in general want your comments and
## strings to come last, because syntax highlighting rules will be
## applied in the order they are read in.
color brightyellow "<[^= ]*>" ""(\\.|[^"])*""

## Comment highlighting
color brightblue "(^|[[:space:]])#.*$"

## Trailing whitespace
color ,green "[[:space:]]+$"