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/usr/share/highlight/langDefs/spn.lang is in highlight-common 3.18-3.

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-- Language definition generated by lang2to3

Description="SPIN SQL"

Keywords={
  { Id=1,
    List={"assert", "init", "priority", "proctype", "provided", "active", "break", "do", "else", "empty", "enabled", "eval", "fi", "full", "goto", "if", "inline", "len", "nempty", "nfull", "od", "of", "printf", "run", "skip", "timeout", "xr", "xs", "unless", "_last", "_pid", "cond_expr", "false", "np_", "pc_value", "STDIN", "true", "accept", "end", "progress", "atomic", "d_step", "hidden", "ltl", "never", "notrace", "trace", "show"},
  },
  { Id=2,
    List={"bit", "bool", "byte", "chan", "int", "local", "mtype", "short", "typedef", "unsigned"},
  },
}

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

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

IgnoreCase=true

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

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