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

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-- Language definition generated by lang2to3

Description="Pyrex"

Keywords={
  { Id=1,
    List={"global", "nextgroup", "pythonfunction", "skipwhite", "contained", "chr", "cmp", "coerce", "compile", "complex", "delattr", "dir", "divmod", "eval", "execfile", "filter", "getattr", "globals", "hasattr", "hash", "hex", "id", "input", "intern", "isinstance", "issubclass", "len", "list", "locals", "long", "map", "max", "min", "oct", "open", "ord", "pow", "range", "raw_input", "reduce", "reload", "repr", "round", "setattr", "slice", "str", "tuple", "type", "vars", "xrange", "apply", "sizeof", "abs", "callable", "exec"},
  },
  { Id=2,
    List={"import", "from", "self", "public", "extern", "struct", "as", "break", "continue", "del", "except", "finally", "pass", "print", "raise", "return", "lambda", "class", "try", "assert", "def", "for", "while", "if", "elif", "else", "and", "in", "is", "not", "or", "cdef", "ctypedef"},
  },
  { Id=3,
    List={"arithmeticerror", "assertionerror", "attributeerror", "eoferror", "exception", "floatingpointerror", "ioerror", "importerror", "indexerror", "keyerror", "keyboardinterrupt", "lookuperror", "memoryerror", "nameerror", "notimplementederror", "oserror", "overflowerror", "runtimeerror", "standarderror", "syntaxerror", "systemerror", "systemexit", "typeerror", "valueerror", "zerodivisionerror", "environmenterror", "void", "char", "int", "float", "object"},
  },
}

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

IgnoreCase=true

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

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

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