m4_define(`__SKILL_CHOOSE_STYLE',
   `m4_define(`__SKILL',m4_defn(`$1'))m4_undefine(`$1')')m4_dnl
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m4_define(`__SKILL_ERLANG_STYLE',`from_id (<<"`$1'">>) ->
   #skill
   {
      id = <<"$1">>,
      module = $2,
      name = <<"$3">>,
      cost = $4,
      reserve = $5,
      targets = $6,
      locations = $7,
      duration = $8,
      uses = $9,
      chance = $10,
      power = $11,
      range = $12
   };
')m4_dnl
m4_define(`__SKILL_USE_ERLANG_STYLE',
   `__SKILL_CHOOSE_STYLE(`__SKILL_ERLANG_STYLE')')m4_dnl
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m4_define(`__SKILL_JSON_STYLE',`   {
      "msg": "add_skill",
      "id": "$1",
      "nam": "$3",
      "cos": $4,
      "res": $5,
      "tar": $6,
      "loc": $7,
      "dur": $8,
      "use": $9,
      "cha": $10,
      "pow": $11,
      "ran": $12
   },
')m4_dnl
m4_define(`__SKILL_USE_JSON_STYLE',
   `__SKILL_CHOOSE_STYLE(`__SKILL_JSON_STYLE')')m4_dnl
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m4_ifelse(__CODE_STYLE(),
   erlang, `__SKILL_USE_ERLANG_STYLE()',
   __CODE_STYLE(), json, `__SKILL_USE_JSON_STYLE()')m4_dnl