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## Syntax highlighting for Haskell files.

## Original author:  Alex Taber
## License:  GPL version 3

syntax "haskell" "\.hs$"
comment "--"

# Keywords
color red "\<(as|case|of|class|data|default|deriving|do|forall|foreign|hiding|if|then|else|import|infix(l|r)?|instance|let|in|mdo|module|newtype|qualified|type|where)\>"

# Various symbols
color cyan "\||@|!|:|_|~|=|\\|;|\(\)|,|\[|\]|\{|\}"

# Operators
color magenta "==|/=|&&|\|\||<|>|<=|>="

# More symbols
color cyan "->|<-|=>"
color magenta "\.|\$"

# Data constructors
color magenta "\<(True|False|Nothing|Just|Left|Right|LT|EQ|GT)\>"
# Data classes
color magenta "\<(Bounded|Data|Enum|Eq|Floating|Fractional|Functor|Integral|Monad|MonadPlus|Num|Ord|Read|Real|RealFloat|RealFrac|Show|Typeable)\>"

# Special keyword
color brightred "undefined"

# Strings
color yellow ""([^\"]|\\.)*""
# Characters
color brightyellow "'([^\']|\\.)'"

# Comments
color green "--.*"
color green start="\{-" end="-\}"

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