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/usr/share/highlight/langDefs/netrexx.lang is in highlight-common 3.8-2.

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-- Language definition generated by lang2to3

Description="NetRexx"

Keywords={
  { Id=1,
    List={"class", "private", "public", "abstract", "final", "interface", "dependent", "adapter", "deprecated", "extends", "uses", "implements", "method", "native", "returns", "signals", "properties", "private", "public", "inheritable", "constant", "static", "volatile", "unused", "transient", "indirect"},
  },
  { Id=2,
    List={"do", "label", "protect", "catch", "finally", "end", "signal", "if", "then", "else", "select", "case", "when", "otherwise", "loop", "forever", "for", "to", "by", "over", "until", "while", "leave", "iterate", "return", "exit"},
  },
  { Id=3,
    List={"ask", "digits", "form", "null", "source", "this", "super", "parent", "sourceline", "version", "trace", "var", "all", "results", "off", "methods", "package", "import", "numeric", "scientific", "engineering"},
  },
  { Id=4,
    Regex=[[(\w+)\s*\(]],
  },
}

Strings={
  Delimiter=[["|']],
}

IgnoreCase=false

Comments={
  { Block=false,
    Delimiter= { [[\-\-]] },
  },
  { Block=true,
    Nested=false,
    Delimiter= { [[\/\*]],[[\*\/]],}
  }
}

Operators=[[\(|\)|\[|\]|\{|\}|\,|\;|\.|\:|\&|\<|\>|\!|\=|\/|\*|\%|\+|\-|\~]]

--FIXME no default escchar param: regex(\\\d{3}|\\x\p{XDigit}{2}|\\[ntvbrfa\\\?'"])