## Here is an example for awk.

syntax awk "\.awk$"

magic "awk script"

comment "#"

# 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)\>"

# Strings.

color brightyellow "<[^= 	]*>" ""(\\.|[^"])*""

# Comments.

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

# Trailing whitespace.

color ,green "[[:space:]]+$"