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/usr/share/highlight/langDefs/nasal.lang is in highlight-common 3.9-1+deb7u1.

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-- Language definition generated by lang2to3

Description="Nasal"

Keywords={
  { Id=1,
    List={"and",  "or",  "nil",  "if",  "elsif",  "else",  "for",  "foreach", "while",  "return", "break",  "continue",  "func",  "size",  "keys",  "append",  "pop",  "int",  "streq",  "substr", "contains", "typeof"},
  },
  { Id=2,
    List={"parents", "me", "arg"},
  },
}

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

IgnoreCase=false

Comments={
  { Block=false,
    Delimiter= { [[#]] },
  },
}

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

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