melee-roguelite/lib/fennel.lua

package.preload["fennel.repl"] = package.preload["fennel.repl"] or function(...)
  local utils = require("fennel.utils")
  local parser = require("fennel.parser")
  local compiler = require("fennel.compiler")
  local specials = require("fennel.specials")
  local unpack = (table.unpack or _G.unpack)
  local function default_read_chunk(parser_state)
    local function _481_()
      if (0 < parser_state["stack-size"]) then
        return ".."
      else
        return ">> "
      end
    end
    io.write(_481_())
    io.flush()
    local input = io.read()
    return (input and (input .. "\n"))
  end
  local function default_on_values(xs)
    io.write(table.concat(xs, "\9"))
    return io.write("\n")
  end
  local function default_on_error(errtype, err, lua_source)
    local function _483_()
      local _482_ = errtype
      if (_482_ == "Lua Compile") then
        return ("Bad code generated - likely a bug with the compiler:\n" .. "--- Generated Lua Start ---\n" .. lua_source .. "--- Generated Lua End ---\n")
      elseif (_482_ == "Runtime") then
        return (compiler.traceback(tostring(err), 4) .. "\n")
      else
        local _ = _482_
        return ("%s error: %s\n"):format(errtype, tostring(err))
      end
    end
    return io.write(_483_())
  end
  local save_source = table.concat({"local ___i___ = 1", "while true do", " local name, value = debug.getlocal(1, ___i___)", " if(name and name ~= \"___i___\") then", " ___replLocals___[name] = value", " ___i___ = ___i___ + 1", " else break end end"}, "\n")
  local function splice_save_locals(env, lua_source)
    env.___replLocals___ = (env.___replLocals___ or {})
    local spliced_source = {}
    local bind = "local %s = ___replLocals___['%s']"
    for line in lua_source:gmatch("([^\n]+)\n?") do
      table.insert(spliced_source, line)
    end
    for name in pairs(env.___replLocals___) do
      table.insert(spliced_source, 1, bind:format(name, name))
    end
    if ((1 < #spliced_source) and (spliced_source[#spliced_source]):match("^ *return .*$")) then
      table.insert(spliced_source, #spliced_source, save_source)
    end
    return table.concat(spliced_source, "\n")
  end
  local function completer(env, scope, text)
    local matches = {}
    local input_fragment = text:gsub(".*[%s)(]+", "")
    local stop_looking_3f = false
    local function add_partials(input, tbl, prefix, method_3f)
      for k in utils.allpairs(tbl) do
        local k0
        if ((tbl == env) or (tbl == env.___replLocals___)) then
          k0 = scope.unmanglings[k]
        else
          k0 = k
        end
        if ((#matches < 2000) and (type(k0) == "string") and (input == k0:sub(0, #input)) and (not method_3f or ("function" == type(tbl[k0])))) then
          local function _487_()
            if method_3f then
              return (prefix .. ":" .. k0)
            else
              return (prefix .. k0)
            end
          end
          table.insert(matches, _487_())
        end
      end
      return nil
    end
    local function descend(input, tbl, prefix, add_matches, method_3f)
      local splitter
      if method_3f then
        splitter = "^([^:]+):(.*)"
      else
        splitter = "^([^.]+)%.(.*)"
      end
      local head, tail = input:match(splitter)
      local raw_head
      if ((tbl == env) or (tbl == env.___replLocals___)) then
        raw_head = scope.manglings[head]
      else
        raw_head = head
      end
      if (type(tbl[raw_head]) == "table") then
        stop_looking_3f = true
        if method_3f then
          return add_partials(tail, tbl[raw_head], (prefix .. head), true)
        else
          return add_matches(tail, tbl[raw_head], (prefix .. head))
        end
      end
    end
    local function add_matches(input, tbl, prefix)
      local prefix0
      if prefix then
        prefix0 = (prefix .. ".")
      else
        prefix0 = ""
      end
      if (not input:find("%.") and input:find(":")) then
        return descend(input, tbl, prefix0, add_matches, true)
      elseif not input:find("%.") then
        return add_partials(input, tbl, prefix0)
      else
        return descend(input, tbl, prefix0, add_matches, false)
      end
    end
    for _, source in ipairs({scope.specials, scope.macros, (env.___replLocals___ or {}), env, env._G}) do
      add_matches(input_fragment, source)
      if stop_looking_3f then
        break
      end
    end
    return matches
  end
  local commands = {}
  local function command_3f(input)
    return input:match("^%s*,")
  end
  local function command_docs()
    local _496_
    do
      local tbl_13_auto = {}
      for name, f in pairs(commands) do
        tbl_13_auto[(#tbl_13_auto + 1)] = ("  ,%s - %s"):format(name, ((compiler.metadata):get(f, "fnl/docstring") or "undocumented"))
      end
      _496_ = tbl_13_auto
    end
    return table.concat(_496_, "\n")
  end
  commands.help = function(_, _0, on_values)
    return on_values({("Welcome to Fennel.\nThis is the REPL where you can enter code to be evaluated.\nYou can also run these repl commands:\n\n" .. command_docs() .. "\n  ,exit - Leave the repl.\n\nUse (doc something) to see descriptions for individual macros and special forms.\n\nFor more information about the language, see https://fennel-lang.org/reference")})
  end
  do end (compiler.metadata):set(commands.help, "fnl/docstring", "Show this message.")
  local function reload(module_name, env, on_values, on_error)
    local _497_, _498_ = pcall(specials["load-code"]("return require(...)", env), module_name)
    if ((_497_ == true) and (nil ~= _498_)) then
      local old = _498_
      local _
      package.loaded[module_name] = nil
      _ = nil
      local ok, new = pcall(require, module_name)
      local new0
      if not ok then
        on_values({new})
        new0 = old
      else
        new0 = new
      end
      if ((type(old) == "table") and (type(new0) == "table")) then
        for k, v in pairs(new0) do
          old[k] = v
        end
        for k in pairs(old) do
          if (nil == (new0)[k]) then
            old[k] = nil
          end
        end
        package.loaded[module_name] = old
      end
      return on_values({"ok"})
    elseif ((_497_ == false) and (nil ~= _498_)) then
      local msg = _498_
      local function _503_()
        local _502_ = msg:gsub("\n.*", "")
        return _502_
      end
      return on_error("Runtime", _503_())
    end
  end
  local function run_command(read, on_error, f)
    local _505_, _506_, _507_ = pcall(read)
    if ((_505_ == true) and (_506_ == true) and (nil ~= _507_)) then
      local val = _507_
      return f(val)
    elseif ((_505_ == false) and true and true) then
      local _3fparse_ok = _506_
      local _3ferr = _507_
      return on_error("Parse", "Couldn't parse input.")
    end
  end
  commands.reload = function(env, read, on_values, on_error)
    local function _509_(_241)
      return reload(tostring(_241), env, on_values, on_error)
    end
    return run_command(read, on_error, _509_)
  end
  do end (compiler.metadata):set(commands.reload, "fnl/docstring", "Reload the specified module.")
  commands.reset = function(env, _, on_values)
    env.___replLocals___ = {}
    return on_values({"ok"})
  end
  do end (compiler.metadata):set(commands.reset, "fnl/docstring", "Erase all repl-local scope.")
  commands.complete = function(env, read, on_values, on_error, scope, chars)
    local function _510_()
      return on_values(completer(env, scope, string.char(unpack(chars)):gsub(",complete +", ""):sub(1, -2)))
    end
    return run_command(read, on_error, _510_)
  end
  do end (compiler.metadata):set(commands.complete, "fnl/docstring", "Print all possible completions for a given input symbol.")
  local function apropos_2a(pattern, module, prefix, seen, names)
    for name, module0 in pairs(module) do
      if (("string" == type(name)) and (package ~= module0)) then
        local _511_ = type(module0)
        if (_511_ == "function") then
          if ((prefix .. name)):match(pattern) then
            table.insert(names, (prefix .. name))
          end
        elseif (_511_ == "table") then
          if not seen[module0] then
            local _514_
            do
              local _513_ = seen
              _513_[module0] = true
              _514_ = _513_
            end
            apropos_2a(pattern, module0, (prefix .. name:gsub("%.", "/") .. "."), _514_, names)
          end
        end
      end
    end
    return names
  end
  local function apropos(pattern)
    local names = apropos_2a(pattern, package.loaded, "", {}, {})
    local tbl_13_auto = {}
    for _, name in ipairs(names) do
      tbl_13_auto[(#tbl_13_auto + 1)] = name:gsub("^_G%.", "")
    end
    return tbl_13_auto
  end
  commands.apropos = function(env, read, on_values, on_error, scope)
    local function _518_(_241)
      return on_values(apropos(tostring(_241)))
    end
    return run_command(read, on_error, _518_)
  end
  do end (compiler.metadata):set(commands.apropos, "fnl/docstring", "Print all functions matching a pattern in all loaded modules.")
  local function apropos_follow_path(path)
    local paths
    do
      local tbl_13_auto = {}
      for p in path:gmatch("[^%.]+") do
        tbl_13_auto[(#tbl_13_auto + 1)] = p
      end
      paths = tbl_13_auto
    end
    local tgt = package.loaded
    for _, path0 in ipairs(paths) do
      local _520_
      do
        local _519_ = path0:gsub("%/", ".")
        _520_ = _519_
      end
      tgt = tgt[_520_]
      if (nil == tgt) then
        break
      end
    end
    return tgt
  end
  local function apropos_doc(pattern)
    local names = {}
    for _, path in ipairs(apropos(".*")) do
      local tgt = apropos_follow_path(path)
      if ("function" == type(tgt)) then
        local _522_ = (compiler.metadata):get(tgt, "fnl/docstring")
        if (nil ~= _522_) then
          local docstr = _522_
          if docstr:match(pattern) then
            table.insert(names, path)
          end
        end
      end
    end
    return names
  end
  commands["apropos-doc"] = function(env, read, on_values, on_error, scope)
    local function _526_(_241)
      return on_values(apropos_doc(tostring(_241)))
    end
    return run_command(read, on_error, _526_)
  end
  do end (compiler.metadata):set(commands["apropos-doc"], "fnl/docstring", "Print all functions that match the pattern in their docs")
  local function apropos_show_docs(pattern)
    for _, path in ipairs(apropos(pattern)) do
      local tgt = apropos_follow_path(path)
      if (("function" == type(tgt)) and (compiler.metadata):get(tgt, "fnl/docstring")) then
        print(specials.doc(tgt, path))
        print()
      end
    end
    return nil
  end
  commands["apropos-show-docs"] = function(env, read, _, on_error, scope)
    local function _528_(_241)
      return apropos_show_docs(tostring(_241))
    end
    return run_command(read, on_error, _528_)
  end
  do end (compiler.metadata):set(commands["apropos-show-docs"], "fnl/docstring", "Print all documentations matching a pattern in function name")
  local function load_plugin_commands()
    if (utils.root and utils.root.options and utils.root.options.plugins) then
      for _, plugin in ipairs(utils.root.options.plugins) do
        for name, f in pairs(plugin) do
          local _529_ = name:match("^repl%-command%-(.*)")
          if (nil ~= _529_) then
            local cmd_name = _529_
            commands[cmd_name] = (commands[cmd_name] or f)
          end
        end
      end
      return nil
    end
  end
  local function run_command_loop(input, read, loop, env, on_values, on_error, scope, chars)
    load_plugin_commands()
    local command_name = input:match(",([^%s/]+)")
    do
      local _532_ = commands[command_name]
      if (nil ~= _532_) then
        local command = _532_
        command(env, read, on_values, on_error, scope, chars)
      else
        local _ = _532_
        if ("exit" ~= command_name) then
          on_values({"Unknown command", command_name})
        end
      end
    end
    if ("exit" ~= command_name) then
      return loop()
    end
  end
  local function repl(options)
    local old_root_options = utils.root.options
    local env
    if options.env then
      env = specials["wrap-env"](options.env)
    else
      env = setmetatable({}, {__index = (rawget(_G, "_ENV") or _G)})
    end
    local save_locals_3f = ((options.saveLocals ~= false) and env.debug and env.debug.getlocal)
    local opts = {}
    local _
    for k, v in pairs(options) do
      opts[k] = v
    end
    _ = nil
    local read_chunk = (opts.readChunk or default_read_chunk)
    local on_values = (opts.onValues or default_on_values)
    local on_error = (opts.onError or default_on_error)
    local pp = (opts.pp or tostring)
    local byte_stream, clear_stream = parser.granulate(read_chunk)
    local chars = {}
    local read, reset = nil, nil
    local function _537_(parser_state)
      local c = byte_stream(parser_state)
      table.insert(chars, c)
      return c
    end
    read, reset = parser.parser(_537_)
    local scope = compiler["make-scope"]()
    opts.useMetadata = (options.useMetadata ~= false)
    if (opts.allowedGlobals == nil) then
      opts.allowedGlobals = specials["current-global-names"](opts.env)
    end
    if opts.registerCompleter then
      local function _541_()
        local _539_ = env
        local _540_ = scope
        local function _542_(...)
          return completer(_539_, _540_, ...)
        end
        return _542_
      end
      opts.registerCompleter(_541_())
    end
    local function print_values(...)
      local vals = {...}
      local out = {}
      env._, env.__ = vals[1], vals
      for i = 1, select("#", ...) do
        table.insert(out, pp(vals[i]))
      end
      return on_values(out)
    end
    local function loop()
      for k in pairs(chars) do
        chars[k] = nil
      end
      local ok, parse_ok_3f, x = pcall(read)
      local src_string = string.char(unpack(chars))
      reset()
      utils.root.options = opts
      if not ok then
        on_error("Parse", parse_ok_3f)
        clear_stream()
        return loop()
      elseif command_3f(src_string) then
        return run_command_loop(src_string, read, loop, env, on_values, on_error, scope, chars)
      else
        if parse_ok_3f then
          do
            local _544_, _545_ = nil, nil
            local function _547_()
              local _546_ = opts
              _546_["env"] = env
              _546_["source"] = src_string
              _546_["scope"] = scope
              return _546_
            end
            _544_, _545_ = pcall(compiler.compile, x, _547_())
            if ((_544_ == false) and (nil ~= _545_)) then
              local msg = _545_
              clear_stream()
              on_error("Compile", msg)
            elseif ((_544_ == true) and (nil ~= _545_)) then
              local src = _545_
              local src0
              if save_locals_3f then
                src0 = splice_save_locals(env, src)
              else
                src0 = src
              end
              local _549_, _550_ = pcall(specials["load-code"], src0, env)
              if ((_549_ == false) and (nil ~= _550_)) then
                local msg = _550_
                clear_stream()
                on_error("Lua Compile", msg, src0)
              elseif (true and (nil ~= _550_)) then
                local _0 = _549_
                local chunk = _550_
                local function _551_()
                  return print_values(chunk())
                end
                local function _552_()
                  local function _553_(...)
                    return on_error("Runtime", ...)
                  end
                  return _553_
                end
                xpcall(_551_, _552_())
              end
            end
          end
          utils.root.options = old_root_options
          return loop()
        end
      end
    end
    return loop()
  end
  return repl
end
package.preload["fennel.specials"] = package.preload["fennel.specials"] or function(...)
  local utils = require("fennel.utils")
  local view = require("fennel.view")
  local parser = require("fennel.parser")
  local compiler = require("fennel.compiler")
  local unpack = (table.unpack or _G.unpack)
  local SPECIALS = compiler.scopes.global.specials
  local function wrap_env(env)
    local function _309_(_, key)
      if (type(key) == "string") then
        return env[compiler["global-unmangling"](key)]
      else
        return env[key]
      end
    end
    local function _311_(_, key, value)
      if (type(key) == "string") then
        env[compiler["global-unmangling"](key)] = value
        return nil
      else
        env[key] = value
        return nil
      end
    end
    local function _313_()
      local function putenv(k, v)
        local _314_
        if (type(k) == "string") then
          _314_ = compiler["global-unmangling"](k)
        else
          _314_ = k
        end
        return _314_, v
      end
      return next, utils.kvmap(env, putenv), nil
    end
    return setmetatable({}, {__index = _309_, __newindex = _311_, __pairs = _313_})
  end
  local function current_global_names(env)
    local mt
    do
      local _316_ = getmetatable(env)
      local function _317_()
        local __pairs = (_316_).__pairs
        return __pairs
      end
      if (((_G.type(_316_) == "table") and true) and _317_()) then
        local __pairs = (_316_).__pairs
        local tbl_10_auto = {}
        for k, v in __pairs(env) do
          local _318_, _319_ = k, v
          if ((nil ~= _318_) and (nil ~= _319_)) then
            local k_11_auto = _318_
            local v_12_auto = _319_
            tbl_10_auto[k_11_auto] = v_12_auto
          end
        end
        mt = tbl_10_auto
      elseif (_316_ == nil) then
        mt = (env or _G)
      else
      mt = nil
      end
    end
    return (mt and utils.kvmap(mt, compiler["global-unmangling"]))
  end
  local function load_code(code, environment, filename)
    local environment0 = (environment or rawget(_G, "_ENV") or _G)
    if (rawget(_G, "setfenv") and rawget(_G, "loadstring")) then
      local f = assert(_G.loadstring(code, filename))
      _G.setfenv(f, environment0)
      return f
    else
      return assert(load(code, filename, "t", environment0))
    end
  end
  local function doc_2a(tgt, name)
    if not tgt then
      return (name .. " not found")
    else
      local docstring = (((compiler.metadata):get(tgt, "fnl/docstring") or "#<undocumented>")):gsub("\n$", ""):gsub("\n", "\n  ")
      local mt = getmetatable(tgt)
      if ((type(tgt) == "function") or ((type(mt) == "table") and (type(mt.__call) == "function"))) then
        local arglist = table.concat(((compiler.metadata):get(tgt, "fnl/arglist") or {"#<unknown-arguments>"}), " ")
        local _323_
        if (#arglist > 0) then
          _323_ = " "
        else
          _323_ = ""
        end
        return string.format("(%s%s%s)\n  %s", name, _323_, arglist, docstring)
      else
        return string.format("%s\n  %s", name, docstring)
      end
    end
  end
  local function doc_special(name, arglist, docstring, body_form_3f)
    compiler.metadata[SPECIALS[name]] = {["fnl/arglist"] = arglist, ["fnl/docstring"] = docstring, ["fnl/body-form?"] = body_form_3f}
    return nil
  end
  local function compile_do(ast, scope, parent, start)
    local start0 = (start or 2)
    local len = #ast
    local sub_scope = compiler["make-scope"](scope)
    for i = start0, len do
      compiler.compile1(ast[i], sub_scope, parent, {nval = 0})
    end
    return nil
  end
  SPECIALS["do"] = function(ast, scope, parent, opts, start, chunk, sub_scope, pre_syms)
    local start0 = (start or 2)
    local sub_scope0 = (sub_scope or compiler["make-scope"](scope))
    local chunk0 = (chunk or {})
    local len = #ast
    local retexprs = {returned = true}
    local function compile_body(outer_target, outer_tail, outer_retexprs)
      if (len < start0) then
        compiler.compile1(nil, sub_scope0, chunk0, {tail = outer_tail, target = outer_target})
      else
        for i = start0, len do
          local subopts = {nval = (((i ~= len) and 0) or opts.nval), tail = (((i == len) and outer_tail) or nil), target = (((i == len) and outer_target) or nil)}
          local _ = utils["propagate-options"](opts, subopts)
          local subexprs = compiler.compile1(ast[i], sub_scope0, chunk0, subopts)
          if (i ~= len) then
            compiler["keep-side-effects"](subexprs, parent, nil, ast[i])
          end
        end
      end
      compiler.emit(parent, chunk0, ast)
      compiler.emit(parent, "end", ast)
      return (outer_retexprs or retexprs)
    end
    if (opts.target or (opts.nval == 0) or opts.tail) then
      compiler.emit(parent, "do", ast)
      return compile_body(opts.target, opts.tail)
    elseif opts.nval then
      local syms = {}
      for i = 1, opts.nval do
        local s = ((pre_syms and pre_syms[i]) or compiler.gensym(scope))
        do end (syms)[i] = s
        retexprs[i] = utils.expr(s, "sym")
      end
      local outer_target = table.concat(syms, ", ")
      compiler.emit(parent, string.format("local %s", outer_target), ast)
      compiler.emit(parent, "do", ast)
      return compile_body(outer_target, opts.tail)
    else
      local fname = compiler.gensym(scope)
      local fargs
      if scope.vararg then
        fargs = "..."
      else
        fargs = ""
      end
      compiler.emit(parent, string.format("local function %s(%s)", fname, fargs), ast)
      utils.hook("do", ast, sub_scope0)
      return compile_body(nil, true, utils.expr((fname .. "(" .. fargs .. ")"), "statement"))
    end
  end
  doc_special("do", {"..."}, "Evaluate multiple forms; return last value.", true)
  SPECIALS.values = function(ast, scope, parent)
    local len = #ast
    local exprs = {}
    for i = 2, len do
      local subexprs = compiler.compile1(ast[i], scope, parent, {nval = ((i ~= len) and 1)})
      table.insert(exprs, subexprs[1])
      if (i == len) then
        for j = 2, #subexprs do
          table.insert(exprs, subexprs[j])
        end
      end
    end
    return exprs
  end
  doc_special("values", {"..."}, "Return multiple values from a function. Must be in tail position.")
  local function deep_tostring(x, key_3f)
    local elems = {}
    if utils["sequence?"](x) then
      local _332_
      do
        local tbl_13_auto = {}
        for _, v in ipairs(x) do
          tbl_13_auto[(#tbl_13_auto + 1)] = deep_tostring(v)
        end
        _332_ = tbl_13_auto
      end
      return ("[" .. table.concat(_332_, " ") .. "]")
    elseif utils["table?"](x) then
      local _333_
      do
        local tbl_13_auto = {}
        for k, v in pairs(x) do
          tbl_13_auto[(#tbl_13_auto + 1)] = (deep_tostring(k, true) .. " " .. deep_tostring(v))
        end
        _333_ = tbl_13_auto
      end
      return ("{" .. table.concat(_333_, " ") .. "}")
    elseif (key_3f and (type(x) == "string") and x:find("^[-%w?\\^_!$%&*+./@:|<=>]+$")) then
      return (":" .. x)
    elseif (type(x) == "string") then
      return string.format("%q", x):gsub("\\\"", "\\\\\""):gsub("\"", "\\\"")
    else
      return tostring(x)
    end
  end
  local function set_fn_metadata(arg_list, docstring, parent, fn_name)
    if utils.root.options.useMetadata then
      local args
      local function _335_(_241)
        return ("\"%s\""):format(deep_tostring(_241))
      end
      args = utils.map(arg_list, _335_)
      local meta_fields = {"\"fnl/arglist\"", ("{" .. table.concat(args, ", ") .. "}")}
      if docstring then
        table.insert(meta_fields, "\"fnl/docstring\"")
        table.insert(meta_fields, ("\"" .. docstring:gsub("%s+$", ""):gsub("\\", "\\\\"):gsub("\n", "\\n"):gsub("\"", "\\\"") .. "\""))
      end
      local meta_str = ("require(\"%s\").metadata"):format((utils.root.options.moduleName or "fennel"))
      return compiler.emit(parent, ("pcall(function() %s:setall(%s, %s) end)"):format(meta_str, fn_name, table.concat(meta_fields, ", ")))
    end
  end
  local function get_fn_name(ast, scope, fn_name, multi)
    if (fn_name and (fn_name[1] ~= "nil")) then
      local _338_
      if not multi then
        _338_ = compiler["declare-local"](fn_name, {}, scope, ast)
      else
        _338_ = (compiler["symbol-to-expression"](fn_name, scope))[1]
      end
      return _338_, not multi, 3
    else
      return nil, true, 2
    end
  end
  local function compile_named_fn(ast, f_scope, f_chunk, parent, index, fn_name, local_3f, arg_name_list, arg_list, docstring)
    for i = (index + 1), #ast do
      compiler.compile1(ast[i], f_scope, f_chunk, {nval = (((i ~= #ast) and 0) or nil), tail = (i == #ast)})
    end
    local _341_
    if local_3f then
      _341_ = "local function %s(%s)"
    else
      _341_ = "%s = function(%s)"
    end
    compiler.emit(parent, string.format(_341_, fn_name, table.concat(arg_name_list, ", ")), ast)
    compiler.emit(parent, f_chunk, ast)
    compiler.emit(parent, "end", ast)
    set_fn_metadata(arg_list, docstring, parent, fn_name)
    utils.hook("fn", ast, f_scope)
    return utils.expr(fn_name, "sym")
  end
  local function compile_anonymous_fn(ast, f_scope, f_chunk, parent, index, arg_name_list, arg_list, docstring, scope)
    local fn_name = compiler.gensym(scope)
    return compile_named_fn(ast, f_scope, f_chunk, parent, index, fn_name, true, arg_name_list, arg_list, docstring)
  end
  SPECIALS.fn = function(ast, scope, parent)
    local f_scope
    do
      local _343_ = compiler["make-scope"](scope)
      do end (_343_)["vararg"] = false
      f_scope = _343_
    end
    local f_chunk = {}
    local fn_sym = utils["sym?"](ast[2])
    local multi = (fn_sym and utils["multi-sym?"](fn_sym[1]))
    local fn_name, local_3f, index = get_fn_name(ast, scope, fn_sym, multi)
    local arg_list = compiler.assert(utils["table?"](ast[index]), "expected parameters table", ast)
    compiler.assert((not multi or not multi["multi-sym-method-call"]), ("unexpected multi symbol " .. tostring(fn_name)), fn_sym)
    local function get_arg_name(arg)
      if utils["varg?"](arg) then
        compiler.assert((arg == arg_list[#arg_list]), "expected vararg as last parameter", ast)
        f_scope.vararg = true
        return "..."
      elseif (utils["sym?"](arg) and (tostring(arg) ~= "nil") and not utils["multi-sym?"](tostring(arg))) then
        return compiler["declare-local"](arg, {}, f_scope, ast)
      elseif utils["table?"](arg) then
        local raw = utils.sym(compiler.gensym(scope))
        local declared = compiler["declare-local"](raw, {}, f_scope, ast)
        compiler.destructure(arg, raw, ast, f_scope, f_chunk, {declaration = true, nomulti = true, symtype = "arg"})
        return declared
      else
        return compiler.assert(false, ("expected symbol for function parameter: %s"):format(tostring(arg)), ast[2])
      end
    end
    local arg_name_list = utils.map(arg_list, get_arg_name)
    local index0, docstring = nil, nil
    if ((type(ast[(index + 1)]) == "string") and ((index + 1) < #ast)) then
      index0, docstring = (index + 1), ast[(index + 1)]
    else
      index0, docstring = index, nil
    end
    if fn_name then
      return compile_named_fn(ast, f_scope, f_chunk, parent, index0, fn_name, local_3f, arg_name_list, arg_list, docstring)
    else
      return compile_anonymous_fn(ast, f_scope, f_chunk, parent, index0, arg_name_list, arg_list, docstring, scope)
    end
  end
  doc_special("fn", {"name?", "args", "docstring?", "..."}, "Function syntax. May optionally include a name and docstring.\nIf a name is provided, the function will be bound in the current scope.\nWhen called with the wrong number of args, excess args will be discarded\nand lacking args will be nil, use lambda for arity-checked functions.", true)
  SPECIALS.lua = function(ast, _, parent)
    compiler.assert(((#ast == 2) or (#ast == 3)), "expected 1 or 2 arguments", ast)
    local _348_
    do
      local _347_ = utils["sym?"](ast[2])
      if _347_ then
        _348_ = tostring(_347_)
      else
        _348_ = _347_
      end
    end
    if ("nil" ~= _348_) then
      table.insert(parent, {ast = ast, leaf = tostring(ast[2])})
    end
    local _352_
    do
      local _351_ = utils["sym?"](ast[3])
      if _351_ then
        _352_ = tostring(_351_)
      else
        _352_ = _351_
      end
    end
    if ("nil" ~= _352_) then
      return tostring(ast[3])
    end
  end
  SPECIALS.doc = function(ast, scope, parent)
    assert(utils.root.options.useMetadata, "can't look up doc with metadata disabled.")
    compiler.assert((#ast == 2), "expected one argument", ast)
    local target = tostring(ast[2])
    local special_or_macro = (scope.specials[target] or scope.macros[target])
    if special_or_macro then
      return ("print(%q)"):format(doc_2a(special_or_macro, target))
    else
      local _let_355_ = compiler.compile1(ast[2], scope, parent, {nval = 1})
      local value = _let_355_[1]
      return ("print(require('%s').doc(%s, '%s'))"):format((utils.root.options.moduleName or "fennel"), tostring(value), tostring(ast[2]))
    end
  end
  doc_special("doc", {"x"}, "Print the docstring and arglist for a function, macro, or special form.")
  local function dot(ast, scope, parent)
    compiler.assert((1 < #ast), "expected table argument", ast)
    local len = #ast
    local _let_357_ = compiler.compile1(ast[2], scope, parent, {nval = 1})
    local lhs = _let_357_[1]
    if (len == 2) then
      return tostring(lhs)
    else
      local indices = {}
      for i = 3, len do
        local index = ast[i]
        if ((type(index) == "string") and utils["valid-lua-identifier?"](index)) then
          table.insert(indices, ("." .. index))
        else
          local _let_358_ = compiler.compile1(index, scope, parent, {nval = 1})
          local index0 = _let_358_[1]
          table.insert(indices, ("[" .. tostring(index0) .. "]"))
        end
      end
      if (tostring(lhs):find("[{\"0-9]") or ("nil" == tostring(lhs))) then
        return ("(" .. tostring(lhs) .. ")" .. table.concat(indices))
      else
        return (tostring(lhs) .. table.concat(indices))
      end
    end
  end
  SPECIALS["."] = dot
  doc_special(".", {"tbl", "key1", "..."}, "Look up key1 in tbl table. If more args are provided, do a nested lookup.")
  SPECIALS.global = function(ast, scope, parent)
    compiler.assert((#ast == 3), "expected name and value", ast)
    compiler.destructure(ast[2], ast[3], ast, scope, parent, {forceglobal = true, nomulti = true, symtype = "global"})
    return nil
  end
  doc_special("global", {"name", "val"}, "Set name as a global with val.")
  SPECIALS.set = function(ast, scope, parent)
    compiler.assert((#ast == 3), "expected name and value", ast)
    compiler.destructure(ast[2], ast[3], ast, scope, parent, {noundef = true, symtype = "set"})
    return nil
  end
  doc_special("set", {"name", "val"}, "Set a local variable to a new value. Only works on locals using var.")
  local function set_forcibly_21_2a(ast, scope, parent)
    compiler.assert((#ast == 3), "expected name and value", ast)
    compiler.destructure(ast[2], ast[3], ast, scope, parent, {forceset = true, symtype = "set"})
    return nil
  end
  SPECIALS["set-forcibly!"] = set_forcibly_21_2a
  local function local_2a(ast, scope, parent)
    compiler.assert((#ast == 3), "expected name and value", ast)
    compiler.destructure(ast[2], ast[3], ast, scope, parent, {declaration = true, nomulti = true, symtype = "local"})
    return nil
  end
  SPECIALS["local"] = local_2a
  doc_special("local", {"name", "val"}, "Introduce new top-level immutable local.")
  SPECIALS.var = function(ast, scope, parent)
    compiler.assert((#ast == 3), "expected name and value", ast)
    compiler.destructure(ast[2], ast[3], ast, scope, parent, {declaration = true, isvar = true, nomulti = true, symtype = "var"})
    return nil
  end
  doc_special("var", {"name", "val"}, "Introduce new mutable local.")
  local function kv_3f(t)
    local _362_
    do
      local tbl_13_auto = {}
      for k in pairs(t) do
        local _363_
        if not ("number" == type(k)) then
          _363_ = k
        else
        _363_ = nil
        end
        tbl_13_auto[(#tbl_13_auto + 1)] = _363_
      end
      _362_ = tbl_13_auto
    end
    return (_362_)[1]
  end
  SPECIALS.let = function(ast, scope, parent, opts)
    local bindings = ast[2]
    local pre_syms = {}
    compiler.assert((utils["table?"](bindings) and not kv_3f(bindings)), "expected binding sequence", bindings)
    compiler.assert(((#bindings % 2) == 0), "expected even number of name/value bindings", ast[2])
    compiler.assert((#ast >= 3), "expected body expression", ast[1])
    for _ = 1, (opts.nval or 0) do
      table.insert(pre_syms, compiler.gensym(scope))
    end
    local sub_scope = compiler["make-scope"](scope)
    local sub_chunk = {}
    for i = 1, #bindings, 2 do
      compiler.destructure(bindings[i], bindings[(i + 1)], ast, sub_scope, sub_chunk, {declaration = true, nomulti = true, symtype = "let"})
    end
    return SPECIALS["do"](ast, scope, parent, opts, 3, sub_chunk, sub_scope, pre_syms)
  end
  doc_special("let", {"[name1 val1 ... nameN valN]", "..."}, "Introduces a new scope in which a given set of local bindings are used.", true)
  local function get_prev_line(parent)
    if ("table" == type(parent)) then
      return get_prev_line((parent.leaf or parent[#parent]))
    else
      return (parent or "")
    end
  end
  local function disambiguate_3f(rootstr, parent)
    local function _367_()
      local _366_ = get_prev_line(parent)
      if (nil ~= _366_) then
        local prev_line = _366_
        return prev_line:match("%)$")
      end
    end
    return (rootstr:match("^{") or _367_())
  end
  SPECIALS.tset = function(ast, scope, parent)
    compiler.assert((#ast > 3), "expected table, key, and value arguments", ast)
    local root = (compiler.compile1(ast[2], scope, parent, {nval = 1}))[1]
    local keys = {}
    for i = 3, (#ast - 1) do
      local _let_369_ = compiler.compile1(ast[i], scope, parent, {nval = 1})
      local key = _let_369_[1]
      table.insert(keys, tostring(key))
    end
    local value = (compiler.compile1(ast[#ast], scope, parent, {nval = 1}))[1]
    local rootstr = tostring(root)
    local fmtstr
    if disambiguate_3f(rootstr, parent) then
      fmtstr = "do end (%s)[%s] = %s"
    else
      fmtstr = "%s[%s] = %s"
    end
    return compiler.emit(parent, fmtstr:format(rootstr, table.concat(keys, "]["), tostring(value)), ast)
  end
  doc_special("tset", {"tbl", "key1", "...", "keyN", "val"}, "Set the value of a table field. Can take additional keys to set\nnested values, but all parents must contain an existing table.")
  local function calculate_target(scope, opts)
    if not (opts.tail or opts.target or opts.nval) then
      return "iife", true, nil
    elseif (opts.nval and (opts.nval ~= 0) and not opts.target) then
      local accum = {}
      local target_exprs = {}
      for i = 1, opts.nval do
        local s = compiler.gensym(scope)
        do end (accum)[i] = s
        target_exprs[i] = utils.expr(s, "sym")
      end
      return "target", opts.tail, table.concat(accum, ", "), target_exprs
    else
      return "none", opts.tail, opts.target
    end
  end
  local function if_2a(ast, scope, parent, opts)
    local do_scope = compiler["make-scope"](scope)
    local branches = {}
    local wrapper, inner_tail, inner_target, target_exprs = calculate_target(scope, opts)
    local body_opts = {nval = opts.nval, tail = inner_tail, target = inner_target}
    local function compile_body(i)
      local chunk = {}
      local cscope = compiler["make-scope"](do_scope)
      compiler["keep-side-effects"](compiler.compile1(ast[i], cscope, chunk, body_opts), chunk, nil, ast[i])
      return {chunk = chunk, scope = cscope}
    end
    for i = 2, (#ast - 1), 2 do
      local condchunk = {}
      local res = compiler.compile1(ast[i], do_scope, condchunk, {nval = 1})
      local cond = res[1]
      local branch = compile_body((i + 1))
      branch.cond = cond
      branch.condchunk = condchunk
      branch.nested = ((i ~= 2) and (next(condchunk, nil) == nil))
      table.insert(branches, branch)
    end
    local has_else_3f = ((#ast > 3) and ((#ast % 2) == 0))
    local else_branch = (has_else_3f and compile_body(#ast))
    local s = compiler.gensym(scope)
    local buffer = {}
    local last_buffer = buffer
    for i = 1, #branches do
      local branch = branches[i]
      local fstr
      if not branch.nested then
        fstr = "if %s then"
      else
        fstr = "elseif %s then"
      end
      local cond = tostring(branch.cond)
      local cond_line
      if ((cond == "true") and branch.nested and (i == #branches) and not has_else_3f) then
        cond_line = "else"
      else
        cond_line = fstr:format(cond)
      end
      if branch.nested then
        compiler.emit(last_buffer, branch.condchunk, ast)
      else
        for _, v in ipairs(branch.condchunk) do
          compiler.emit(last_buffer, v, ast)
        end
      end
      compiler.emit(last_buffer, cond_line, ast)
      compiler.emit(last_buffer, branch.chunk, ast)
      if (i == #branches) then
        if has_else_3f then
          compiler.emit(last_buffer, "else", ast)
          compiler.emit(last_buffer, else_branch.chunk, ast)
        elseif (inner_target and (cond_line ~= "else")) then
          compiler.emit(last_buffer, "else", ast)
          compiler.emit(last_buffer, ("%s = nil"):format(inner_target), ast)
        end
        compiler.emit(last_buffer, "end", ast)
      elseif not (branches[(i + 1)]).nested then
        local next_buffer = {}
        compiler.emit(last_buffer, "else", ast)
        compiler.emit(last_buffer, next_buffer, ast)
        compiler.emit(last_buffer, "end", ast)
        last_buffer = next_buffer
      end
    end
    if (wrapper == "iife") then
      local iifeargs = ((scope.vararg and "...") or "")
      compiler.emit(parent, ("local function %s(%s)"):format(tostring(s), iifeargs), ast)
      compiler.emit(parent, buffer, ast)
      compiler.emit(parent, "end", ast)
      return utils.expr(("%s(%s)"):format(tostring(s), iifeargs), "statement")
    elseif (wrapper == "none") then
      for i = 1, #buffer do
        compiler.emit(parent, buffer[i], ast)
      end
      return {returned = true}
    else
      compiler.emit(parent, ("local %s"):format(inner_target), ast)
      for i = 1, #buffer do
        compiler.emit(parent, buffer[i], ast)
      end
      return target_exprs
    end
  end
  SPECIALS["if"] = if_2a
  doc_special("if", {"cond1", "body1", "...", "condN", "bodyN"}, "Conditional form.\nTakes any number of condition/body pairs and evaluates the first body where\nthe condition evaluates to truthy. Similar to cond in other lisps.")
  local function remove_until_condition(bindings)
    if ("until" == bindings[(#bindings - 1)]) then
      table.remove(bindings, (#bindings - 1))
      return table.remove(bindings)
    end
  end
  local function compile_until(condition, scope, chunk)
    if condition then
      local _let_379_ = compiler.compile1(condition, scope, chunk, {nval = 1})
      local condition_lua = _let_379_[1]
      return compiler.emit(chunk, ("if %s then break end"):format(tostring(condition_lua)), utils.expr(condition, "expression"))
    end
  end
  SPECIALS.each = function(ast, scope, parent)
    compiler.assert((#ast >= 3), "expected body expression", ast[1])
    local binding = compiler.assert(utils["table?"](ast[2]), "expected binding table", ast)
    local _ = compiler.assert((2 <= #binding), "expected binding and iterator", binding)
    local until_condition = remove_until_condition(binding)
    local iter = table.remove(binding, #binding)
    local destructures = {}
    local new_manglings = {}
    local sub_scope = compiler["make-scope"](scope)
    local function destructure_binding(v)
      compiler.assert(("string" ~= type(v)), ("unexpected iterator clause " .. tostring(v)), binding)
      if utils["sym?"](v) then
        return compiler["declare-local"](v, {}, sub_scope, ast, new_manglings)
      else
        local raw = utils.sym(compiler.gensym(sub_scope))
        do end (destructures)[raw] = v
        return compiler["declare-local"](raw, {}, sub_scope, ast)
      end
    end
    local bind_vars = utils.map(binding, destructure_binding)
    local vals = compiler.compile1(iter, sub_scope, parent)
    local val_names = utils.map(vals, tostring)
    local chunk = {}
    compiler.emit(parent, ("for %s in %s do"):format(table.concat(bind_vars, ", "), table.concat(val_names, ", ")), ast)
    for raw, args in utils.stablepairs(destructures) do
      compiler.destructure(args, raw, ast, sub_scope, chunk, {declaration = true, nomulti = true, symtype = "each"})
    end
    compiler["apply-manglings"](sub_scope, new_manglings, ast)
    compile_until(until_condition, sub_scope, chunk)
    compile_do(ast, sub_scope, chunk, 3)
    compiler.emit(parent, chunk, ast)
    return compiler.emit(parent, "end", ast)
  end
  doc_special("each", {"[key value (iterator)]", "..."}, "Runs the body once for each set of values provided by the given iterator.\nMost commonly used with ipairs for sequential tables or pairs for  undefined\norder, but can be used with any iterator.", true)
  local function while_2a(ast, scope, parent)
    local len1 = #parent
    local condition = (compiler.compile1(ast[2], scope, parent, {nval = 1}))[1]
    local len2 = #parent
    local sub_chunk = {}
    if (len1 ~= len2) then
      for i = (len1 + 1), len2 do
        table.insert(sub_chunk, parent[i])
        do end (parent)[i] = nil
      end
      compiler.emit(parent, "while true do", ast)
      compiler.emit(sub_chunk, ("if not %s then break end"):format(condition[1]), ast)
    else
      compiler.emit(parent, ("while " .. tostring(condition) .. " do"), ast)
    end
    compile_do(ast, compiler["make-scope"](scope), sub_chunk, 3)
    compiler.emit(parent, sub_chunk, ast)
    return compiler.emit(parent, "end", ast)
  end
  SPECIALS["while"] = while_2a
  doc_special("while", {"condition", "..."}, "The classic while loop. Evaluates body until a condition is non-truthy.", true)
  local function for_2a(ast, scope, parent)
    local ranges = compiler.assert(utils["table?"](ast[2]), "expected binding table", ast)
    local until_condition = remove_until_condition(ast[2])
    local binding_sym = table.remove(ast[2], 1)
    local sub_scope = compiler["make-scope"](scope)
    local range_args = {}
    local chunk = {}
    compiler.assert(utils["sym?"](binding_sym), ("unable to bind %s %s"):format(type(binding_sym), tostring(binding_sym)), ast[2])
    compiler.assert((#ast >= 3), "expected body expression", ast[1])
    compiler.assert((#ranges <= 3), "unexpected arguments", ranges[4])
    for i = 1, math.min(#ranges, 3) do
      range_args[i] = tostring((compiler.compile1(ranges[i], sub_scope, parent, {nval = 1}))[1])
    end
    compiler.emit(parent, ("for %s = %s do"):format(compiler["declare-local"](binding_sym, {}, sub_scope, ast), table.concat(range_args, ", ")), ast)
    compile_until(until_condition, sub_scope, chunk)
    compile_do(ast, sub_scope, chunk, 3)
    compiler.emit(parent, chunk, ast)
    return compiler.emit(parent, "end", ast)
  end
  SPECIALS["for"] = for_2a
  doc_special("for", {"[index start stop step?]", "..."}, "Numeric loop construct.\nEvaluates body once for each value between start and stop (inclusive).", true)
  local function native_method_call(ast, _scope, _parent, target, args)
    local _let_383_ = ast
    local _ = _let_383_[1]
    local _0 = _let_383_[2]
    local method_string = _let_383_[3]
    local call_string
    if ((target.type == "literal") or (target.type == "varg") or (target.type == "expression")) then
      call_string = "(%s):%s(%s)"
    else
      call_string = "%s:%s(%s)"
    end
    return utils.expr(string.format(call_string, tostring(target), method_string, table.concat(args, ", ")), "statement")
  end
  local function nonnative_method_call(ast, scope, parent, target, args)
    local method_string = tostring((compiler.compile1(ast[3], scope, parent, {nval = 1}))[1])
    local args0 = {tostring(target), unpack(args)}
    return utils.expr(string.format("%s[%s](%s)", tostring(target), method_string, table.concat(args0, ", ")), "statement")
  end
  local function double_eval_protected_method_call(ast, scope, parent, target, args)
    local method_string = tostring((compiler.compile1(ast[3], scope, parent, {nval = 1}))[1])
    local call = "(function(tgt, m, ...) return tgt[m](tgt, ...) end)(%s, %s)"
    table.insert(args, 1, method_string)
    return utils.expr(string.format(call, tostring(target), table.concat(args, ", ")), "statement")
  end
  local function method_call(ast, scope, parent)
    compiler.assert((2 < #ast), "expected at least 2 arguments", ast)
    local _let_385_ = compiler.compile1(ast[2], scope, parent, {nval = 1})
    local target = _let_385_[1]
    local args = {}
    for i = 4, #ast do
      local subexprs
      local _386_
      if (i ~= #ast) then
        _386_ = 1
      else
      _386_ = nil
      end
      subexprs = compiler.compile1(ast[i], scope, parent, {nval = _386_})
      utils.map(subexprs, tostring, args)
    end
    if ((type(ast[3]) == "string") and utils["valid-lua-identifier?"](ast[3])) then
      return native_method_call(ast, scope, parent, target, args)
    elseif (target.type == "sym") then
      return nonnative_method_call(ast, scope, parent, target, args)
    else
      return double_eval_protected_method_call(ast, scope, parent, target, args)
    end
  end
  SPECIALS[":"] = method_call
  doc_special(":", {"tbl", "method-name", "..."}, "Call the named method on tbl with the provided args.\nMethod name doesn't have to be known at compile-time; if it is, use\n(tbl:method-name ...) instead.")
  SPECIALS.comment = function(ast, _, parent)
    local els = {}
    for i = 2, #ast do
      table.insert(els, view(ast[i], {["one-line?"] = true}))
    end
    return compiler.emit(parent, ("-- " .. table.concat(els, " ")), ast)
  end
  doc_special("comment", {"..."}, "Comment which will be emitted in Lua output.", true)
  local function hashfn_max_used(f_scope, i, max)
    local max0
    if f_scope.symmeta[("$" .. i)].used then
      max0 = i
    else
      max0 = max
    end
    if (i < 9) then
      return hashfn_max_used(f_scope, (i + 1), max0)
    else
      return max0
    end
  end
  SPECIALS.hashfn = function(ast, scope, parent)
    compiler.assert((#ast == 2), "expected one argument", ast)
    local f_scope
    do
      local _391_ = compiler["make-scope"](scope)
      do end (_391_)["vararg"] = false
      _391_["hashfn"] = true
      f_scope = _391_
    end
    local f_chunk = {}
    local name = compiler.gensym(scope)
    local symbol = utils.sym(name)
    local args = {}
    compiler["declare-local"](symbol, {}, scope, ast)
    for i = 1, 9 do
      args[i] = compiler["declare-local"](utils.sym(("$" .. i)), {}, f_scope, ast)
    end
    local function walker(idx, node, parent_node)
      if (utils["sym?"](node) and (tostring(node) == "$...")) then
        parent_node[idx] = utils.varg()
        f_scope.vararg = true
        return nil
      else
        return (utils["list?"](node) or utils["table?"](node))
      end
    end
    utils["walk-tree"](ast[2], walker)
    compiler.compile1(ast[2], f_scope, f_chunk, {tail = true})
    local max_used = hashfn_max_used(f_scope, 1, 0)
    if f_scope.vararg then
      compiler.assert((max_used == 0), "$ and $... in hashfn are mutually exclusive", ast)
    end
    local arg_str
    if f_scope.vararg then
      arg_str = tostring(utils.varg())
    else
      arg_str = table.concat(args, ", ", 1, max_used)
    end
    compiler.emit(parent, string.format("local function %s(%s)", name, arg_str), ast)
    compiler.emit(parent, f_chunk, ast)
    compiler.emit(parent, "end", ast)
    return utils.expr(name, "sym")
  end
  doc_special("hashfn", {"..."}, "Function literal shorthand; args are either $... OR $1, $2, etc.")
  local function arithmetic_special(name, zero_arity, unary_prefix, nval, ast, scope, parent)
    local len = #ast
    local operands = {}
    local padded_op = (" " .. name .. " ")
    for i = 2, len do
      local subexprs
      local _395_
      if (i < len) then
        _395_ = 1
      else
      _395_ = nil
      end
      subexprs = compiler.compile1(ast[i], scope, parent, {nval = _395_})
      utils.map(subexprs, tostring, operands)
    end
    local _397_ = #operands
    if (_397_ == 0) then
      local _399_
      do
        local _398_ = zero_arity
        compiler.assert(_398_, "Expected more than 0 arguments", ast)
        _399_ = _398_
      end
      return utils.expr(_399_, "literal")
    elseif (_397_ == 1) then
      if unary_prefix then
        return ("(" .. unary_prefix .. padded_op .. operands[1] .. ")")
      else
        return operands[1]
      end
    else
      local _ = _397_
      return ("(" .. table.concat(operands, padded_op) .. ")")
    end
  end
  local function define_arithmetic_special(name, zero_arity, unary_prefix, lua_name)
    local _405_
    do
      local _402_ = (lua_name or name)
      local _403_ = zero_arity
      local _404_ = unary_prefix
      local function _406_(...)
        return arithmetic_special(_402_, _403_, _404_, 1, ...)
      end
      _405_ = _406_
    end
    SPECIALS[name] = _405_
    return doc_special(name, {"a", "b", "..."}, "Arithmetic operator; works the same as Lua but accepts more arguments.")
  end
  define_arithmetic_special("+", "0")
  define_arithmetic_special("..", "''")
  define_arithmetic_special("^")
  define_arithmetic_special("-", nil, "")
  define_arithmetic_special("*", "1")
  define_arithmetic_special("%")
  define_arithmetic_special("/", nil, "1")
  define_arithmetic_special("//", nil, "1")
  SPECIALS["or"] = function(ast, scope, parent)
    return arithmetic_special("or", "false", nil, nil, ast, scope, parent)
  end
  SPECIALS["and"] = function(ast, scope, parent)
    return arithmetic_special("and", "true", nil, nil, ast, scope, parent)
  end
  doc_special("and", {"a", "b", "..."}, "Boolean operator; works the same as Lua but accepts more arguments.")
  doc_special("or", {"a", "b", "..."}, "Boolean operator; works the same as Lua but accepts more arguments.")
  local function bitop_special(native_name, lib_name, zero_arity, unary_prefix, ast, scope, parent)
    if (#ast == 1) then
      return compiler.assert(zero_arity, "Expected more than 0 arguments.", ast)
    else
      local len = #ast
      local operands = {}
      local padded_native_name = (" " .. native_name .. " ")
      local prefixed_lib_name = ("bit." .. lib_name)
      for i = 2, len do
        local subexprs
        local _407_
        if (i ~= len) then
          _407_ = 1
        else
        _407_ = nil
        end
        subexprs = compiler.compile1(ast[i], scope, parent, {nval = _407_})
        utils.map(subexprs, tostring, operands)
      end
      if (#operands == 1) then
        if utils.root.options.useBitLib then
          return (prefixed_lib_name .. "(" .. unary_prefix .. ", " .. operands[1] .. ")")
        else
          return ("(" .. unary_prefix .. padded_native_name .. operands[1] .. ")")
        end
      else
        if utils.root.options.useBitLib then
          return (prefixed_lib_name .. "(" .. table.concat(operands, ", ") .. ")")
        else
          return ("(" .. table.concat(operands, padded_native_name) .. ")")
        end
      end
    end
  end
  local function define_bitop_special(name, zero_arity, unary_prefix, native)
    local _417_
    do
      local _413_ = native
      local _414_ = name
      local _415_ = zero_arity
      local _416_ = unary_prefix
      local function _418_(...)
        return bitop_special(_413_, _414_, _415_, _416_, ...)
      end
      _417_ = _418_
    end
    SPECIALS[name] = _417_
    return nil
  end
  define_bitop_special("lshift", nil, "1", "<<")
  define_bitop_special("rshift", nil, "1", ">>")
  define_bitop_special("band", "0", "0", "&")
  define_bitop_special("bor", "0", "0", "|")
  define_bitop_special("bxor", "0", "0", "~")
  doc_special("lshift", {"x", "n"}, "Bitwise logical left shift of x by n bits.\nOnly works in Lua 5.3+ or LuaJIT with the --use-bit-lib flag.")
  doc_special("rshift", {"x", "n"}, "Bitwise logical right shift of x by n bits.\nOnly works in Lua 5.3+ or LuaJIT with the --use-bit-lib flag.")
  doc_special("band", {"x1", "x2", "..."}, "Bitwise AND of any number of arguments.\nOnly works in Lua 5.3+ or LuaJIT with the --use-bit-lib flag.")
  doc_special("bor", {"x1", "x2", "..."}, "Bitwise OR of any number of arguments.\nOnly works in Lua 5.3+ or LuaJIT with the --use-bit-lib flag.")
  doc_special("bxor", {"x1", "x2", "..."}, "Bitwise XOR of any number of arguments.\nOnly works in Lua 5.3+ or LuaJIT with the --use-bit-lib flag.")
  doc_special("..", {"a", "b", "..."}, "String concatenation operator; works the same as Lua but accepts more arguments.")
  local function native_comparator(op, _419_, scope, parent)
    local _arg_420_ = _419_
    local _ = _arg_420_[1]
    local lhs_ast = _arg_420_[2]
    local rhs_ast = _arg_420_[3]
    local _let_421_ = compiler.compile1(lhs_ast, scope, parent, {nval = 1})
    local lhs = _let_421_[1]
    local _let_422_ = compiler.compile1(rhs_ast, scope, parent, {nval = 1})
    local rhs = _let_422_[1]
    return string.format("(%s %s %s)", tostring(lhs), op, tostring(rhs))
  end
  local function double_eval_protected_comparator(op, chain_op, ast, scope, parent)
    local arglist = {}
    local comparisons = {}
    local vals = {}
    local chain = string.format(" %s ", (chain_op or "and"))
    for i = 2, #ast do
      table.insert(arglist, tostring(compiler.gensym(scope)))
      table.insert(vals, tostring((compiler.compile1(ast[i], scope, parent, {nval = 1}))[1]))
    end
    for i = 1, (#arglist - 1) do
      table.insert(comparisons, string.format("(%s %s %s)", arglist[i], op, arglist[(i + 1)]))
    end
    return string.format("(function(%s) return %s end)(%s)", table.concat(arglist, ","), table.concat(comparisons, chain), table.concat(vals, ","))
  end
  local function define_comparator_special(name, lua_op, chain_op)
    do
      local op = (lua_op or name)
      local function opfn(ast, scope, parent)
        compiler.assert((2 < #ast), "expected at least two arguments", ast)
        if (3 == #ast) then
          return native_comparator(op, ast, scope, parent)
        else
          return double_eval_protected_comparator(op, chain_op, ast, scope, parent)
        end
      end
      SPECIALS[name] = opfn
    end
    return doc_special(name, {"a", "b", "..."}, "Comparison operator; works the same as Lua but accepts more arguments.")
  end
  define_comparator_special(">")
  define_comparator_special("<")
  define_comparator_special(">=")
  define_comparator_special("<=")
  define_comparator_special("=", "==")
  define_comparator_special("not=", "~=", "or")
  local function define_unary_special(op, realop)
    local function opfn(ast, scope, parent)
      compiler.assert((#ast == 2), "expected one argument", ast)
      local tail = compiler.compile1(ast[2], scope, parent, {nval = 1})
      return ((realop or op) .. tostring(tail[1]))
    end
    SPECIALS[op] = opfn
    return nil
  end
  define_unary_special("not", "not ")
  doc_special("not", {"x"}, "Logical operator; works the same as Lua.")
  define_unary_special("bnot", "~")
  doc_special("bnot", {"x"}, "Bitwise negation; only works in Lua 5.3+ or LuaJIT with the --use-bit-lib flag.")
  define_unary_special("length", "#")
  doc_special("length", {"x"}, "Returns the length of a table or string.")
  do end (SPECIALS)["~="] = SPECIALS["not="]
  SPECIALS["#"] = SPECIALS.length
  SPECIALS.quote = function(ast, scope, parent)
    compiler.assert((#ast == 2), "expected one argument")
    local runtime, this_scope = true, scope
    while this_scope do
      this_scope = this_scope.parent
      if (this_scope == compiler.scopes.compiler) then
        runtime = false
      end
    end
    return compiler["do-quote"](ast[2], scope, parent, runtime)
  end
  doc_special("quote", {"x"}, "Quasiquote the following form. Only works in macro/compiler scope.")
  local macro_loaded = {}
  local function safe_getmetatable(tbl)
    local mt = getmetatable(tbl)
    assert((mt ~= getmetatable("")), "Illegal metatable access!")
    return mt
  end
  local safe_require = nil
  local function safe_compiler_env()
    return {table = utils.copy(table), math = utils.copy(math), string = utils.copy(string), pairs = pairs, ipairs = ipairs, select = select, tostring = tostring, tonumber = tonumber, bit = rawget(_G, "bit"), pcall = pcall, xpcall = xpcall, next = next, print = print, type = type, assert = assert, error = error, setmetatable = setmetatable, getmetatable = safe_getmetatable, require = safe_require, rawlen = rawget(_G, "rawlen"), rawget = rawget, rawset = rawset, rawequal = rawequal}
  end
  local function combined_mt_pairs(env)
    local combined = {}
    local _let_425_ = getmetatable(env)
    local __index = _let_425_["__index"]
    if ("table" == type(__index)) then
      for k, v in pairs(__index) do
        combined[k] = v
      end
    end
    for k, v in next, env, nil do
      combined[k] = v
    end
    return next, combined, nil
  end
  local function make_compiler_env(ast, scope, parent, _3fopts)
    local provided
    do
      local _427_ = (_3fopts or utils.root.options)
      if ((_G.type(_427_) == "table") and ((_427_)["compiler-env"] == "strict")) then
        provided = safe_compiler_env()
      elseif ((_G.type(_427_) == "table") and (nil ~= (_427_).compilerEnv)) then
        local compilerEnv = (_427_).compilerEnv
        provided = compilerEnv
      elseif ((_G.type(_427_) == "table") and (nil ~= (_427_)["compiler-env"])) then
        local compiler_env = (_427_)["compiler-env"]
        provided = compiler_env
      else
        local _ = _427_
        provided = safe_compiler_env(false)
      end
    end
    local env
    local function _429_(base)
      return utils.sym(compiler.gensym((compiler.scopes.macro or scope), base))
    end
    local function _430_()
      return compiler.scopes.macro
    end
    local function _431_(symbol)
      compiler.assert(compiler.scopes.macro, "must call from macro", ast)
      return compiler.scopes.macro.manglings[tostring(symbol)]
    end
    local function _432_(form)
      compiler.assert(compiler.scopes.macro, "must call from macro", ast)
      return compiler.macroexpand(form, compiler.scopes.macro)
    end
    env = {_AST = ast, _CHUNK = parent, _IS_COMPILER = true, _SCOPE = scope, _SPECIALS = compiler.scopes.global.specials, _VARARG = utils.varg(), ["macro-loaded"] = macro_loaded, unpack = unpack, ["assert-compile"] = compiler.assert, list = utils.list, ["list?"] = utils["list?"], ["multi-sym?"] = utils["multi-sym?"], sequence = utils.sequence, ["sequence?"] = utils["sequence?"], sym = utils.sym, ["sym?"] = utils["sym?"], ["table?"] = utils["table?"], ["varg?"] = utils["varg?"], view = view, gensym = _429_, ["get-scope"] = _430_, ["in-scope?"] = _431_, macroexpand = _432_}
    env._G = env
    return setmetatable(env, {__index = provided, __newindex = provided, __pairs = combined_mt_pairs})
  end
  local cfg = string.gmatch(package.config, "([^\n]+)")
  local dirsep, pathsep, pathmark = (cfg() or "/"), (cfg() or ";"), (cfg() or "?")
  local pkg_config = {dirsep = dirsep, pathmark = pathmark, pathsep = pathsep}
  local function escapepat(str)
    return string.gsub(str, "[^%w]", "%%%1")
  end
  local function search_module(modulename, pathstring)
    local pathsepesc = escapepat(pkg_config.pathsep)
    local pattern = ("([^%s]*)%s"):format(pathsepesc, pathsepesc)
    local no_dot_module = modulename:gsub("%.", pkg_config.dirsep)
    local fullpath = ((pathstring or utils["fennel-module"].path) .. pkg_config.pathsep)
    local function try_path(path)
      local filename = path:gsub(escapepat(pkg_config.pathmark), no_dot_module)
      local filename2 = path:gsub(escapepat(pkg_config.pathmark), modulename)
      local _433_ = (io.open(filename) or io.open(filename2))
      if (nil ~= _433_) then
        local file = _433_
        file:close()
        return filename
      end
    end
    local function find_in_path(start)
      local _435_ = fullpath:match(pattern, start)
      if (nil ~= _435_) then
        local path = _435_
        return (try_path(path) or find_in_path((start + #path + 1)))
      end
    end
    return find_in_path(1)
  end
  local function make_searcher(options)
    local function _437_(module_name)
      local opts = utils.copy(utils.root.options)
      for k, v in pairs((options or {})) do
        opts[k] = v
      end
      opts["module-name"] = module_name
      local _438_ = search_module(module_name)
      if (nil ~= _438_) then
        local filename = _438_
        local _441_
        do
          local _439_ = filename
          local _440_ = opts
          local function _442_(...)
            return utils["fennel-module"].dofile(_439_, _440_, ...)
          end
          _441_ = _442_
        end
        return _441_, filename
      end
    end
    return _437_
  end
  local function macro_globals(env, globals)
    local allowed = current_global_names(env)
    for _, k in pairs((globals or {})) do
      table.insert(allowed, k)
    end
    return allowed
  end
  local function fennel_macro_searcher(module_name)
    local opts
    do
      local _444_ = utils.copy(utils.root.options)
      do end (_444_)["env"] = "_COMPILER"
      _444_["allowedGlobals"] = nil
      opts = _444_
    end
    local _445_ = search_module(module_name, utils["fennel-module"]["macro-path"])
    if (nil ~= _445_) then
      local filename = _445_
      local _448_
      do
        local _446_ = filename
        local _447_ = opts
        local function _449_(...)
          return utils["fennel-module"].dofile(_446_, _447_, ...)
        end
        _448_ = _449_
      end
      return _448_, filename
    end
  end
  local function lua_macro_searcher(module_name)
    local _451_ = search_module(module_name, package.path)
    if (nil ~= _451_) then
      local filename = _451_
      local code
      do
        local f = io.open(filename)
        local function close_handlers_7_auto(ok_8_auto, ...)
          f:close()
          if ok_8_auto then
            return ...
          else
            return error(..., 0)
          end
        end
        local function _453_()
          return assert(f:read("*a"))
        end
        code = close_handlers_7_auto(_G.xpcall(_453_, (package.loaded.fennel or debug).traceback))
      end
      local chunk = load_code(code, make_compiler_env(), filename)
      return chunk, filename
    end
  end
  local macro_searchers = {lua_macro_searcher, fennel_macro_searcher}
  local function search_macro_module(modname, n)
    local _455_ = macro_searchers[n]
    if (nil ~= _455_) then
      local f = _455_
      local _456_, _457_ = f(modname)
      if ((nil ~= _456_) and true) then
        local loader = _456_
        local _3ffilename = _457_
        return loader, _3ffilename
      else
        local _ = _456_
        return search_macro_module(modname, (n + 1))
      end
    end
  end
  local function metadata_only_fennel(modname)
    if ((modname == "fennel.macros") or (package and package.loaded and ("table" == type(package.loaded[modname])) and (package.loaded[modname].metadata == compiler.metadata))) then
      return {metadata = compiler.metadata}
    end
  end
  local function _461_(modname)
    local function _462_()
      local loader, filename = search_macro_module(modname, 1)
      compiler.assert(loader, (modname .. " module not found."))
      do end (macro_loaded)[modname] = loader(modname, filename)
      return macro_loaded[modname]
    end
    return (macro_loaded[modname] or metadata_only_fennel(modname) or _462_())
  end
  safe_require = _461_
  local function add_macros(macros_2a, ast, scope)
    compiler.assert(utils["table?"](macros_2a), "expected macros to be table", ast)
    for k, v in pairs(macros_2a) do
      compiler.assert((type(v) == "function"), "expected each macro to be function", ast)
      do end (scope.macros)[k] = v
    end
    return nil
  end
  local function resolve_module_name(_463_, scope, parent, opts)
    local _arg_464_ = _463_
    local filename = _arg_464_["filename"]
    local second = _arg_464_[2]
    local filename0 = (filename or (utils["table?"](second) and second.filename))
    local module_name = utils.root.options["module-name"]
    local modexpr = compiler.compile(second, opts)
    local modname_chunk = load_code(modexpr)
    return modname_chunk(module_name, filename0)
  end
  SPECIALS["require-macros"] = function(ast, scope, parent, real_ast)
    compiler.assert((#ast == 2), "Expected one module name argument", (real_ast or ast))
    local modname = resolve_module_name(ast, scope, parent, {})
    compiler.assert(("string" == type(modname)), "module name must compile to string", (real_ast or ast))
    if not macro_loaded[modname] then
      local loader, filename = search_macro_module(modname, 1)
      compiler.assert(loader, (modname .. " module not found."), ast)
      do end (macro_loaded)[modname] = loader(modname, filename)
    end
    return add_macros(macro_loaded[modname], ast, scope, parent)
  end
  doc_special("require-macros", {"macro-module-name"}, "Load given module and use its contents as macro definitions in current scope.\nMacro module should return a table of macro functions with string keys.\nConsider using import-macros instead as it is more flexible.")
  local function emit_included_fennel(src, path, opts, sub_chunk)
    local subscope = compiler["make-scope"](utils.root.scope.parent)
    local forms = {}
    if utils.root.options.requireAsInclude then
      subscope.specials.require = compiler["require-include"]
    end
    for _, val in parser.parser(parser["string-stream"](src), path) do
      table.insert(forms, val)
    end
    for i = 1, #forms do
      local subopts
      if (i == #forms) then
        subopts = {tail = true}
      else
        subopts = {nval = 0}
      end
      utils["propagate-options"](opts, subopts)
      compiler.compile1(forms[i], subscope, sub_chunk, subopts)
    end
    return nil
  end
  local function include_path(ast, opts, path, mod, fennel_3f)
    utils.root.scope.includes[mod] = "fnl/loading"
    local src
    do
      local f = assert(io.open(path))
      local function close_handlers_7_auto(ok_8_auto, ...)
        f:close()
        if ok_8_auto then
          return ...
        else
          return error(..., 0)
        end
      end
      local function _469_()
        return f:read("*all"):gsub("[\13\n]*$", "")
      end
      src = close_handlers_7_auto(_G.xpcall(_469_, (package.loaded.fennel or debug).traceback))
    end
    local ret = utils.expr(("require(\"" .. mod .. "\")"), "statement")
    local target = ("package.preload[%q]"):format(mod)
    local preload_str = (target .. " = " .. target .. " or function(...)")
    local temp_chunk, sub_chunk = {}, {}
    compiler.emit(temp_chunk, preload_str, ast)
    compiler.emit(temp_chunk, sub_chunk)
    compiler.emit(temp_chunk, "end", ast)
    for i, v in ipairs(temp_chunk) do
      table.insert(utils.root.chunk, i, v)
    end
    if fennel_3f then
      emit_included_fennel(src, path, opts, sub_chunk)
    else
      compiler.emit(sub_chunk, src, ast)
    end
    utils.root.scope.includes[mod] = ret
    return ret
  end
  local function include_circular_fallback(mod, modexpr, fallback, ast)
    if (utils.root.scope.includes[mod] == "fnl/loading") then
      compiler.assert(fallback, "circular include detected", ast)
      return fallback(modexpr)
    end
  end
  SPECIALS.include = function(ast, scope, parent, opts)
    compiler.assert((#ast == 2), "expected one argument", ast)
    local modexpr
    do
      local _472_, _473_ = pcall(resolve_module_name, ast, scope, parent, opts)
      if ((_472_ == true) and (nil ~= _473_)) then
        local modname = _473_
        modexpr = utils.expr(string.format("%q", modname), "literal")
      elseif (true and (nil ~= _473_)) then
        local _ = _472_
        local err = _473_
        modexpr = (compiler.compile1(ast[2], scope, parent, {nval = 1}))[1]
      else
      modexpr = nil
      end
    end
    if ((modexpr.type ~= "literal") or ((modexpr[1]):byte() ~= 34)) then
      if opts.fallback then
        return opts.fallback(modexpr)
      else
        return compiler.assert(false, "module name must be string literal", ast)
      end
    else
      local mod = load_code(("return " .. modexpr[1]))()
      local oldmod = utils.root.options["module-name"]
      local _
      utils.root.options["module-name"] = mod
      _ = nil
      local res
      local function _477_()
        local _476_ = search_module(mod)
        if (nil ~= _476_) then
          local fennel_path = _476_
          return include_path(ast, opts, fennel_path, mod, true)
        else
          local _0 = _476_
          local lua_path = search_module(mod, package.path)
          if lua_path then
            return include_path(ast, opts, lua_path, mod, false)
          elseif opts.fallback then
            return opts.fallback(modexpr)
          else
            return compiler.assert(false, ("module not found " .. mod), ast)
          end
        end
      end
      res = ((utils["member?"](mod, (utils.root.options.skipInclude or {})) and utils.expr("nil --[[SKIPPED INCLUDE]]--", "literal")) or include_circular_fallback(mod, modexpr, opts.fallback, ast) or utils.root.scope.includes[mod] or _477_())
      utils.root.options["module-name"] = oldmod
      return res
    end
  end
  doc_special("include", {"module-name-literal"}, "Like require but load the target module during compilation and embed it in the\nLua output. The module must be a string literal and resolvable at compile time.")
  local function eval_compiler_2a(ast, scope, parent)
    local env = make_compiler_env(ast, scope, parent)
    local opts = utils.copy(utils.root.options)
    opts.scope = compiler["make-scope"](compiler.scopes.compiler)
    opts.allowedGlobals = macro_globals(env, current_global_names())
    return load_code(compiler.compile(ast, opts), wrap_env(env))(opts["module-name"], ast.filename)
  end
  SPECIALS.macros = function(ast, scope, parent)
    compiler.assert((#ast == 2), "Expected one table argument", ast)
    return add_macros(eval_compiler_2a(ast[2], scope, parent), ast, scope, parent)
  end
  doc_special("macros", {"{:macro-name-1 (fn [...] ...) ... :macro-name-N macro-body-N}"}, "Define all functions in the given table as macros local to the current scope.")
  SPECIALS["eval-compiler"] = function(ast, scope, parent)
    local old_first = ast[1]
    ast[1] = utils.sym("do")
    local val = eval_compiler_2a(ast, scope, parent)
    do end (ast)[1] = old_first
    return val
  end
  doc_special("eval-compiler", {"..."}, "Evaluate the body at compile-time. Use the macro system instead if possible.", true)
  return {doc = doc_2a, ["current-global-names"] = current_global_names, ["load-code"] = load_code, ["macro-loaded"] = macro_loaded, ["macro-searchers"] = macro_searchers, ["make-compiler-env"] = make_compiler_env, ["search-module"] = search_module, ["make-searcher"] = make_searcher, ["wrap-env"] = wrap_env}
end
package.preload["fennel.compiler"] = package.preload["fennel.compiler"] or function(...)
  local utils = require("fennel.utils")
  local parser = require("fennel.parser")
  local friend = require("fennel.friend")
  local unpack = (table.unpack or _G.unpack)
  local scopes = {}
  local function make_scope(parent)
    local parent0 = (parent or scopes.global)
    local _176_
    if parent0 then
      _176_ = ((parent0.depth or 0) + 1)
    else
      _176_ = 0
    end
    return {includes = setmetatable({}, {__index = (parent0 and parent0.includes)}), macros = setmetatable({}, {__index = (parent0 and parent0.macros)}), manglings = setmetatable({}, {__index = (parent0 and parent0.manglings)}), refedglobals = setmetatable({}, {__index = (parent0 and parent0.refedglobals)}), specials = setmetatable({}, {__index = (parent0 and parent0.specials)}), symmeta = setmetatable({}, {__index = (parent0 and parent0.symmeta)}), unmanglings = setmetatable({}, {__index = (parent0 and parent0.unmanglings)}), gensyms = setmetatable({}, {__index = (parent0 and parent0.gensyms)}), autogensyms = setmetatable({}, {__index = (parent0 and parent0.autogensyms)}), vararg = (parent0 and parent0.vararg), depth = _176_, hashfn = (parent0 and parent0.hashfn), parent = parent0}
  end
  local function assert_msg(ast, msg)
    local ast_tbl
    if ("table" == type(ast)) then
      ast_tbl = ast
    else
      ast_tbl = {}
    end
    local m = getmetatable(ast)
    local filename = ((m and m.filename) or ast_tbl.filename or "unknown")
    local line = ((m and m.line) or ast_tbl.line or "?")
    local target = tostring((utils["sym?"](ast_tbl[1]) or ast_tbl[1] or "()"))
    return string.format("%s:%s: Compile error in '%s': %s", filename, line, target, msg)
  end
  local function assert_compile(condition, msg, ast)
    if not condition then
      local _let_179_ = (utils.root.options or {})
      local source = _let_179_["source"]
      local unfriendly = _let_179_["unfriendly"]
      utils.root.reset()
      if (unfriendly or not friend or not _G.io or not _G.io.read) then
        error(assert_msg(ast, msg), 0)
      else
        friend["assert-compile"](condition, msg, ast, source)
      end
    end
    return condition
  end
  scopes.global = make_scope()
  scopes.global.vararg = true
  scopes.compiler = make_scope(scopes.global)
  scopes.macro = scopes.global
  local serialize_subst = {["\7"] = "\\a", ["\8"] = "\\b", ["\9"] = "\\t", ["\n"] = "n", ["\11"] = "\\v", ["\12"] = "\\f"}
  local function serialize_string(str)
    local function _182_(_241)
      return ("\\" .. _241:byte())
    end
    return string.gsub(string.gsub(string.format("%q", str), ".", serialize_subst), "[\128-\255]", _182_)
  end
  local function global_mangling(str)
    if utils["valid-lua-identifier?"](str) then
      return str
    else
      local function _183_(_241)
        return string.format("_%02x", _241:byte())
      end
      return ("__fnl_global__" .. str:gsub("[^%w]", _183_))
    end
  end
  local function global_unmangling(identifier)
    local _185_ = string.match(identifier, "^__fnl_global__(.*)$")
    if (nil ~= _185_) then
      local rest = _185_
      local _186_
      local function _187_(_241)
        return string.char(tonumber(_241:sub(2), 16))
      end
      _186_ = string.gsub(rest, "_[%da-f][%da-f]", _187_)
      return _186_
    else
      local _ = _185_
      return identifier
    end
  end
  local allowed_globals = nil
  local function global_allowed_3f(name)
    return (not allowed_globals or utils["member?"](name, allowed_globals))
  end
  local function unique_mangling(original, mangling, scope, append)
    if (scope.unmanglings[mangling] and not scope.gensyms[mangling]) then
      return unique_mangling(original, (original .. append), scope, (append + 1))
    else
      return mangling
    end
  end
  local function local_mangling(str, scope, ast, temp_manglings)
    assert_compile(not utils["multi-sym?"](str), ("unexpected multi symbol " .. str), ast)
    local raw
    if ((utils["lua-keywords"])[str] or str:match("^%d")) then
      raw = ("_" .. str)
    else
      raw = str
    end
    local mangling
    local function _191_(_241)
      return string.format("_%02x", _241:byte())
    end
    mangling = string.gsub(string.gsub(raw, "-", "_"), "[^%w_]", _191_)
    local unique = unique_mangling(mangling, mangling, scope, 0)
    do end (scope.unmanglings)[unique] = str
    do
      local manglings = (temp_manglings or scope.manglings)
      do end (manglings)[str] = unique
    end
    return unique
  end
  local function apply_manglings(scope, new_manglings, ast)
    for raw, mangled in pairs(new_manglings) do
      assert_compile(not scope.refedglobals[mangled], ("use of global " .. raw .. " is aliased by a local"), ast)
      do end (scope.manglings)[raw] = mangled
    end
    return nil
  end
  local function combine_parts(parts, scope)
    local ret = (scope.manglings[parts[1]] or global_mangling(parts[1]))
    for i = 2, #parts do
      if utils["valid-lua-identifier?"](parts[i]) then
        if (parts["multi-sym-method-call"] and (i == #parts)) then
          ret = (ret .. ":" .. parts[i])
        else
          ret = (ret .. "." .. parts[i])
        end
      else
        ret = (ret .. "[" .. serialize_string(parts[i]) .. "]")
      end
    end
    return ret
  end
  local function next_append()
    utils.root.scope["gensym-append"] = ((utils.root.scope["gensym-append"] or 0) + 1)
    return ("_" .. utils.root.scope["gensym-append"] .. "_")
  end
  local function gensym(scope, base, _3fsuffix)
    local mangling = ((base or "") .. next_append() .. (_3fsuffix or ""))
    while scope.unmanglings[mangling] do
      mangling = ((base or "") .. next_append() .. (_3fsuffix or ""))
    end
    scope.unmanglings[mangling] = (base or true)
    do end (scope.gensyms)[mangling] = true
    return mangling
  end
  local function autogensym(base, scope)
    local _194_ = utils["multi-sym?"](base)
    if (nil ~= _194_) then
      local parts = _194_
      parts[1] = autogensym(parts[1], scope)
      return table.concat(parts, ((parts["multi-sym-method-call"] and ":") or "."))
    else
      local _ = _194_
      local function _195_()
        local mangling = gensym(scope, base:sub(1, ( - 2)), "auto")
        do end (scope.autogensyms)[base] = mangling
        return mangling
      end
      return (scope.autogensyms[base] or _195_())
    end
  end
  local function check_binding_valid(symbol, scope, ast)
    local name = tostring(symbol)
    assert_compile(not name:find("&"), "illegal character &")
    assert_compile(not (scope.specials[name] or scope.macros[name]), ("local %s was overshadowed by a special form or macro"):format(name), ast)
    return assert_compile(not utils["quoted?"](symbol), string.format("macro tried to bind %s without gensym", name), symbol)
  end
  local function declare_local(symbol, meta, scope, ast, temp_manglings)
    check_binding_valid(symbol, scope, ast)
    local name = tostring(symbol)
    assert_compile(not utils["multi-sym?"](name), ("unexpected multi symbol " .. name), ast)
    do end (scope.symmeta)[name] = meta
    return local_mangling(name, scope, ast, temp_manglings)
  end
  local function hashfn_arg_name(name, multi_sym_parts, scope)
    if not scope.hashfn then
      return nil
    elseif (name == "$") then
      return "$1"
    elseif multi_sym_parts then
      if (multi_sym_parts and (multi_sym_parts[1] == "$")) then
        multi_sym_parts[1] = "$1"
      end
      return table.concat(multi_sym_parts, ".")
    end
  end
  local function symbol_to_expression(symbol, scope, reference_3f)
    utils.hook("symbol-to-expression", symbol, scope, reference_3f)
    local name = symbol[1]
    local multi_sym_parts = utils["multi-sym?"](name)
    local name0 = (hashfn_arg_name(name, multi_sym_parts, scope) or name)
    local parts = (multi_sym_parts or {name0})
    local etype = (((#parts > 1) and "expression") or "sym")
    local local_3f = scope.manglings[parts[1]]
    if (local_3f and scope.symmeta[parts[1]]) then
      scope.symmeta[parts[1]]["used"] = true
    end
    assert_compile(not scope.macros[parts[1]], "tried to reference a macro at runtime", symbol)
    assert_compile((not reference_3f or local_3f or ("_ENV" == parts[1]) or global_allowed_3f(parts[1])), ("unknown global in strict mode: " .. tostring(parts[1])), symbol)
    if (allowed_globals and not local_3f) then
      utils.root.scope.refedglobals[parts[1]] = true
    end
    return utils.expr(combine_parts(parts, scope), etype)
  end
  local function emit(chunk, out, ast)
    if (type(out) == "table") then
      return table.insert(chunk, out)
    else
      return table.insert(chunk, {ast = ast, leaf = out})
    end
  end
  local function peephole(chunk)
    if chunk.leaf then
      return chunk
    elseif ((#chunk >= 3) and ((chunk[(#chunk - 2)]).leaf == "do") and not (chunk[(#chunk - 1)]).leaf and (chunk[#chunk].leaf == "end")) then
      local kid = peephole(chunk[(#chunk - 1)])
      local new_chunk = {ast = chunk.ast}
      for i = 1, (#chunk - 3) do
        table.insert(new_chunk, peephole(chunk[i]))
      end
      for i = 1, #kid do
        table.insert(new_chunk, kid[i])
      end
      return new_chunk
    else
      return utils.map(chunk, peephole)
    end
  end
  local function ast_source(ast)
    local m = getmetatable(ast)
    return ((m and m.line and m) or (("table" == type(ast)) and ast) or {})
  end
  local function flatten_chunk_correlated(main_chunk, options)
    local function flatten(chunk, out, last_line, file)
      local last_line0 = last_line
      if chunk.leaf then
        out[last_line0] = ((out[last_line0] or "") .. " " .. chunk.leaf)
      else
        for _, subchunk in ipairs(chunk) do
          if (subchunk.leaf or (#subchunk > 0)) then
            local source = ast_source(subchunk.ast)
            if (file == source.filename) then
              last_line0 = math.max(last_line0, (source.line or 0))
            end
            last_line0 = flatten(subchunk, out, last_line0, file)
          end
        end
      end
      return last_line0
    end
    local out = {}
    local last = flatten(main_chunk, out, 1, options.filename)
    for i = 1, last do
      if (out[i] == nil) then
        out[i] = ""
      end
    end
    return table.concat(out, "\n")
  end
  local function flatten_chunk(sm, chunk, tab, depth)
    if chunk.leaf then
      local code = chunk.leaf
      local info = chunk.ast
      if sm then
        table.insert(sm, {(info and info.filename), (info and info.line)})
      end
      return code
    else
      local tab0
      do
        local _208_ = tab
        if (_208_ == true) then
          tab0 = "  "
        elseif (_208_ == false) then
          tab0 = ""
        elseif (_208_ == tab) then
          tab0 = tab
        elseif (_208_ == nil) then
          tab0 = ""
        else
        tab0 = nil
        end
      end
      local function parter(c)
        if (c.leaf or (#c > 0)) then
          local sub = flatten_chunk(sm, c, tab0, (depth + 1))
          if (depth > 0) then
            return (tab0 .. sub:gsub("\n", ("\n" .. tab0)))
          else
            return sub
          end
        end
      end
      return table.concat(utils.map(chunk, parter), "\n")
    end
  end
  local fennel_sourcemap = {}
  local function make_short_src(source)
    local source0 = source:gsub("\n", " ")
    if (#source0 <= 49) then
      return ("[fennel \"" .. source0 .. "\"]")
    else
      return ("[fennel \"" .. source0:sub(1, 46) .. "...\"]")
    end
  end
  local function flatten(chunk, options)
    local chunk0 = peephole(chunk)
    if options.correlate then
      return flatten_chunk_correlated(chunk0, options), {}
    else
      local sm = {}
      local ret = flatten_chunk(sm, chunk0, options.indent, 0)
      if sm then
        sm.short_src = (options.filename or make_short_src((options.source or ret)))
        if options.filename then
          sm.key = ("@" .. options.filename)
        else
          sm.key = ret
        end
        fennel_sourcemap[sm.key] = sm
      end
      return ret, sm
    end
  end
  local function make_metadata()
    local function _217_(self, tgt, key)
      if self[tgt] then
        return self[tgt][key]
      end
    end
    local function _219_(self, tgt, key, value)
      self[tgt] = (self[tgt] or {})
      do end (self[tgt])[key] = value
      return tgt
    end
    local function _220_(self, tgt, ...)
      local kv_len = select("#", ...)
      local kvs = {...}
      if ((kv_len % 2) ~= 0) then
        error("metadata:setall() expected even number of k/v pairs")
      end
      self[tgt] = (self[tgt] or {})
      for i = 1, kv_len, 2 do
        self[tgt][kvs[i]] = kvs[(i + 1)]
      end
      return tgt
    end
    return setmetatable({}, {__index = {get = _217_, set = _219_, setall = _220_}, __mode = "k"})
  end
  local function exprs1(exprs)
    return table.concat(utils.map(exprs, tostring), ", ")
  end
  local function keep_side_effects(exprs, chunk, start, ast)
    local start0 = (start or 1)
    for j = start0, #exprs do
      local se = exprs[j]
      if ((se.type == "expression") and (se[1] ~= "nil")) then
        emit(chunk, string.format("do local _ = %s end", tostring(se)), ast)
      elseif (se.type == "statement") then
        local code = tostring(se)
        local disambiguated
        if (code:byte() == 40) then
          disambiguated = ("do end " .. code)
        else
          disambiguated = code
        end
        emit(chunk, disambiguated, ast)
      end
    end
    return nil
  end
  local function handle_compile_opts(exprs, parent, opts, ast)
    if opts.nval then
      local n = opts.nval
      local len = #exprs
      if (n ~= len) then
        if (len > n) then
          keep_side_effects(exprs, parent, (n + 1), ast)
          for i = (n + 1), len do
            exprs[i] = nil
          end
        else
          for i = (#exprs + 1), n do
            exprs[i] = utils.expr("nil", "literal")
          end
        end
      end
    end
    if opts.tail then
      emit(parent, string.format("return %s", exprs1(exprs)), ast)
    end
    if opts.target then
      local result = exprs1(exprs)
      local function _228_()
        if (result == "") then
          return "nil"
        else
          return result
        end
      end
      emit(parent, string.format("%s = %s", opts.target, _228_()), ast)
    end
    if (opts.tail or opts.target) then
      return {returned = true}
    else
      local _230_ = exprs
      _230_["returned"] = true
      return _230_
    end
  end
  local function find_macro(ast, scope, multi_sym_parts)
    local function find_in_table(t, i)
      if (i <= #multi_sym_parts) then
        return find_in_table((utils["table?"](t) and t[multi_sym_parts[i]]), (i + 1))
      else
        return t
      end
    end
    local macro_2a = (utils["sym?"](ast[1]) and scope.macros[tostring(ast[1])])
    if (not macro_2a and multi_sym_parts) then
      local nested_macro = find_in_table(scope.macros, 1)
      assert_compile((not scope.macros[multi_sym_parts[1]] or (type(nested_macro) == "function")), "macro not found in imported macro module", ast)
      return nested_macro
    else
      return macro_2a
    end
  end
  local function macroexpand_2a(ast, scope, once)
    local _234_
    if utils["list?"](ast) then
      _234_ = find_macro(ast, scope, utils["multi-sym?"](ast[1]))
    else
    _234_ = nil
    end
    if (_234_ == false) then
      return ast
    elseif (nil ~= _234_) then
      local macro_2a = _234_
      local old_scope = scopes.macro
      local _
      scopes.macro = scope
      _ = nil
      local ok, transformed = nil, nil
      local function _236_()
        return macro_2a(unpack(ast, 2))
      end
      ok, transformed = xpcall(_236_, debug.traceback)
      scopes.macro = old_scope
      assert_compile(ok, transformed, ast)
      if (once or not transformed) then
        return transformed
      else
        return macroexpand_2a(transformed, scope)
      end
    else
      local _ = _234_
      return ast
    end
  end
  local function compile_special(ast, scope, parent, opts, special)
    local exprs = (special(ast, scope, parent, opts) or utils.expr("nil", "literal"))
    local exprs0
    if ("table" ~= type(exprs)) then
      exprs0 = utils.expr(exprs, "expression")
    else
      exprs0 = exprs
    end
    local exprs2
    if utils["expr?"](exprs0) then
      exprs2 = {exprs0}
    else
      exprs2 = exprs0
    end
    if not exprs2.returned then
      return handle_compile_opts(exprs2, parent, opts, ast)
    elseif (opts.tail or opts.target) then
      return {returned = true}
    else
      return exprs2
    end
  end
  local function compile_function_call(ast, scope, parent, opts, compile1, len)
    local fargs = {}
    local fcallee = (compile1(ast[1], scope, parent, {nval = 1}))[1]
    assert_compile((("string" == type(ast[1])) or (fcallee.type ~= "literal")), ("cannot call literal value " .. tostring(ast[1])), ast)
    for i = 2, len do
      local subexprs
      local _242_
      if (i ~= len) then
        _242_ = 1
      else
      _242_ = nil
      end
      subexprs = compile1(ast[i], scope, parent, {nval = _242_})
      table.insert(fargs, (subexprs[1] or utils.expr("nil", "literal")))
      if (i == len) then
        for j = 2, #subexprs do
          table.insert(fargs, subexprs[j])
        end
      else
        keep_side_effects(subexprs, parent, 2, ast[i])
      end
    end
    local pat
    if ("string" == type(ast[1])) then
      pat = "(%s)(%s)"
    else
      pat = "%s(%s)"
    end
    local call = string.format(pat, tostring(fcallee), exprs1(fargs))
    return handle_compile_opts({utils.expr(call, "statement")}, parent, opts, ast)
  end
  local function compile_call(ast, scope, parent, opts, compile1)
    utils.hook("call", ast, scope)
    local len = #ast
    local first = ast[1]
    local multi_sym_parts = utils["multi-sym?"](first)
    local special = (utils["sym?"](first) and scope.specials[tostring(first)])
    assert_compile((len > 0), "expected a function, macro, or special to call", ast)
    if special then
      return compile_special(ast, scope, parent, opts, special)
    elseif (multi_sym_parts and multi_sym_parts["multi-sym-method-call"]) then
      local table_with_method = table.concat({unpack(multi_sym_parts, 1, (#multi_sym_parts - 1))}, ".")
      local method_to_call = multi_sym_parts[#multi_sym_parts]
      local new_ast = utils.list(utils.sym(":", nil, scope), utils.sym(table_with_method, nil, scope), method_to_call, select(2, unpack(ast)))
      return compile1(new_ast, scope, parent, opts)
    else
      return compile_function_call(ast, scope, parent, opts, compile1, len)
    end
  end
  local function compile_varg(ast, scope, parent, opts)
    assert_compile(scope.vararg, "unexpected vararg", ast)
    return handle_compile_opts({utils.expr("...", "varg")}, parent, opts, ast)
  end
  local function compile_sym(ast, scope, parent, opts)
    local multi_sym_parts = utils["multi-sym?"](ast)
    assert_compile(not (multi_sym_parts and multi_sym_parts["multi-sym-method-call"]), "multisym method calls may only be in call position", ast)
    local e
    if (ast[1] == "nil") then
      e = utils.expr("nil", "literal")
    else
      e = symbol_to_expression(ast, scope, true)
    end
    return handle_compile_opts({e}, parent, opts, ast)
  end
  local function serialize_number(n)
    local _248_ = string.gsub(tostring(n), ",", ".")
    return _248_
  end
  local function compile_scalar(ast, _scope, parent, opts)
    local serialize
    do
      local _249_ = type(ast)
      if (_249_ == "nil") then
        serialize = tostring
      elseif (_249_ == "boolean") then
        serialize = tostring
      elseif (_249_ == "string") then
        serialize = serialize_string
      elseif (_249_ == "number") then
        serialize = serialize_number
      else
      serialize = nil
      end
    end
    return handle_compile_opts({utils.expr(serialize(ast), "literal")}, parent, opts)
  end
  local function compile_table(ast, scope, parent, opts, compile1)
    local buffer = {}
    for i = 1, #ast do
      local nval = ((i ~= #ast) and 1)
      table.insert(buffer, exprs1(compile1(ast[i], scope, parent, {nval = nval})))
    end
    local function write_other_values(k)
      if ((type(k) ~= "number") or (math.floor(k) ~= k) or (k < 1) or (k > #ast)) then
        if ((type(k) == "string") and utils["valid-lua-identifier?"](k)) then
          return {k, k}
        else
          local _let_251_ = compile1(k, scope, parent, {nval = 1})
          local compiled = _let_251_[1]
          local kstr = ("[" .. tostring(compiled) .. "]")
          return {kstr, k}
        end
      end
    end
    do
      local keys
      do
        local tbl_13_auto = {}
        for k, v in utils.stablepairs(ast) do
          tbl_13_auto[(#tbl_13_auto + 1)] = write_other_values(k, v)
        end
        keys = tbl_13_auto
      end
      local function _256_(_254_)
        local _arg_255_ = _254_
        local k1 = _arg_255_[1]
        local k2 = _arg_255_[2]
        local _let_257_ = compile1(ast[k2], scope, parent, {nval = 1})
        local v = _let_257_[1]
        return string.format("%s = %s", k1, tostring(v))
      end
      utils.map(keys, _256_, buffer)
    end
    return handle_compile_opts({utils.expr(("{" .. table.concat(buffer, ", ") .. "}"), "expression")}, parent, opts, ast)
  end
  local function compile1(ast, scope, parent, opts)
    local opts0 = (opts or {})
    local ast0 = macroexpand_2a(ast, scope)
    if utils["list?"](ast0) then
      return compile_call(ast0, scope, parent, opts0, compile1)
    elseif utils["varg?"](ast0) then
      return compile_varg(ast0, scope, parent, opts0)
    elseif utils["sym?"](ast0) then
      return compile_sym(ast0, scope, parent, opts0)
    elseif (type(ast0) == "table") then
      return compile_table(ast0, scope, parent, opts0, compile1)
    elseif ((type(ast0) == "nil") or (type(ast0) == "boolean") or (type(ast0) == "number") or (type(ast0) == "string")) then
      return compile_scalar(ast0, scope, parent, opts0)
    else
      return assert_compile(false, ("could not compile value of type " .. type(ast0)), ast0)
    end
  end
  local function destructure(to, from, ast, scope, parent, opts)
    local opts0 = (opts or {})
    local _let_259_ = opts0
    local isvar = _let_259_["isvar"]
    local declaration = _let_259_["declaration"]
    local forceglobal = _let_259_["forceglobal"]
    local forceset = _let_259_["forceset"]
    local symtype = _let_259_["symtype"]
    local symtype0 = ("_" .. (symtype or "dst"))
    local setter
    if declaration then
      setter = "local %s = %s"
    else
      setter = "%s = %s"
    end
    local new_manglings = {}
    local function getname(symbol, up1)
      local raw = symbol[1]
      assert_compile(not (opts0.nomulti and utils["multi-sym?"](raw)), ("unexpected multi symbol " .. raw), up1)
      if declaration then
        return declare_local(symbol, nil, scope, symbol, new_manglings)
      else
        local parts = (utils["multi-sym?"](raw) or {raw})
        local meta = scope.symmeta[parts[1]]
        assert_compile(not raw:find(":"), "cannot set method sym", symbol)
        if ((#parts == 1) and not forceset) then
          assert_compile(not (forceglobal and meta), string.format("global %s conflicts with local", tostring(symbol)), symbol)
          assert_compile(not (meta and not meta.var), ("expected var " .. raw), symbol)
          assert_compile((meta or not opts0.noundef), ("expected local " .. parts[1]), symbol)
        end
        if forceglobal then
          assert_compile(not scope.symmeta[scope.unmanglings[raw]], ("global " .. raw .. " conflicts with local"), symbol)
          do end (scope.manglings)[raw] = global_mangling(raw)
          do end (scope.unmanglings)[global_mangling(raw)] = raw
          if allowed_globals then
            table.insert(allowed_globals, raw)
          end
        end
        return symbol_to_expression(symbol, scope)[1]
      end
    end
    local function compile_top_target(lvalues)
      local inits
      local function _265_(_241)
        if scope.manglings[_241] then
          return _241
        else
          return "nil"
        end
      end
      inits = utils.map(lvalues, _265_)
      local init = table.concat(inits, ", ")
      local lvalue = table.concat(lvalues, ", ")
      local plen, plast = #parent, parent[#parent]
      local ret = compile1(from, scope, parent, {target = lvalue})
      if declaration then
        for pi = plen, #parent do
          if (parent[pi] == plast) then
            plen = pi
          end
        end
        if ((#parent == (plen + 1)) and parent[#parent].leaf) then
          parent[#parent]["leaf"] = ("local " .. parent[#parent].leaf)
        elseif (init == "nil") then
          table.insert(parent, (plen + 1), {ast = ast, leaf = ("local " .. lvalue)})
        else
          table.insert(parent, (plen + 1), {ast = ast, leaf = ("local " .. lvalue .. " = " .. init)})
        end
      end
      return ret
    end
    local function destructure_sym(left, rightexprs, up1, top_3f)
      local lname = getname(left, up1)
      check_binding_valid(left, scope, left)
      if top_3f then
        compile_top_target({lname})
      else
        emit(parent, setter:format(lname, exprs1(rightexprs)), left)
      end
      if declaration then
        scope.symmeta[tostring(left)] = {var = isvar}
        return nil
      end
    end
    local function destructure_table(left, rightexprs, top_3f, destructure1)
      local s = gensym(scope, symtype0)
      local right
      do
        local _272_
        if top_3f then
          _272_ = exprs1(compile1(from, scope, parent))
        else
          _272_ = exprs1(rightexprs)
        end
        if (_272_ == "") then
          right = "nil"
        elseif (nil ~= _272_) then
          local right0 = _272_
          right = right0
        else
        right = nil
        end
      end
      emit(parent, string.format("local %s = %s", s, right), left)
      for k, v in utils.stablepairs(left) do
        if not (("number" == type(k)) and tostring(left[(k - 1)]):find("^&")) then
          if (utils["sym?"](v) and (tostring(v) == "&")) then
            local unpack_str = "{(table.unpack or unpack)(%s, %s)}"
            local formatted = string.format(unpack_str, s, k)
            local subexpr = utils.expr(formatted, "expression")
            assert_compile((utils["sequence?"](left) and (nil == left[(k + 2)])), "expected rest argument before last parameter", left)
            destructure1(left[(k + 1)], {subexpr}, left)
          elseif (utils["sym?"](k) and (tostring(k) == "&as")) then
            destructure_sym(v, {utils.expr(tostring(s))}, left)
          elseif (utils["sequence?"](left) and (tostring(v) == "&as")) then
            local _, next_sym, trailing = select(k, unpack(left))
            assert_compile((nil == trailing), "expected &as argument before last parameter", left)
            destructure_sym(next_sym, {utils.expr(tostring(s))}, left)
          else
            local key
            if (type(k) == "string") then
              key = serialize_string(k)
            else
              key = k
            end
            local subexpr = utils.expr(string.format("%s[%s]", s, key), "expression")
            destructure1(v, {subexpr}, left)
          end
        end
      end
      return nil
    end
    local function destructure_values(left, up1, top_3f, destructure1)
      local left_names, tables = {}, {}
      for i, name in ipairs(left) do
        if utils["sym?"](name) then
          table.insert(left_names, getname(name, up1))
        else
          local symname = gensym(scope, symtype0)
          table.insert(left_names, symname)
          do end (tables)[i] = {name, utils.expr(symname, "sym")}
        end
      end
      assert_compile(top_3f, "can't nest multi-value destructuring", left)
      compile_top_target(left_names)
      if declaration then
        for _, sym in ipairs(left) do
          if utils["sym?"](sym) then
            scope.symmeta[tostring(sym)] = {var = isvar}
          end
        end
      end
      for _, pair in utils.stablepairs(tables) do
        destructure1(pair[1], {pair[2]}, left)
      end
      return nil
    end
    local function destructure1(left, rightexprs, up1, top_3f)
      if (utils["sym?"](left) and (left[1] ~= "nil")) then
        destructure_sym(left, rightexprs, up1, top_3f)
      elseif utils["table?"](left) then
        destructure_table(left, rightexprs, top_3f, destructure1)
      elseif utils["list?"](left) then
        destructure_values(left, up1, top_3f, destructure1)
      else
        assert_compile(false, string.format("unable to bind %s %s", type(left), tostring(left)), (((type((up1)[2]) == "table") and (up1)[2]) or up1))
      end
      if top_3f then
        return {returned = true}
      end
    end
    local ret = destructure1(to, nil, ast, true)
    utils.hook("destructure", from, to, scope)
    apply_manglings(scope, new_manglings, ast)
    return ret
  end
  local function require_include(ast, scope, parent, opts)
    opts.fallback = function(e)
      return utils.expr(string.format("require(%s)", tostring(e)), "statement")
    end
    return scopes.global.specials.include(ast, scope, parent, opts)
  end
  local function compile_stream(strm, options)
    local opts = utils.copy(options)
    local old_globals = allowed_globals
    local scope = (opts.scope or make_scope(scopes.global))
    local vals = {}
    local chunk = {}
    do end (function(tgt, m, ...) return tgt[m](tgt, ...) end)(utils.root, "set-reset")
    allowed_globals = opts.allowedGlobals
    if (opts.indent == nil) then
      opts.indent = "  "
    end
    if opts.requireAsInclude then
      scope.specials.require = require_include
    end
    utils.root.chunk, utils.root.scope, utils.root.options = chunk, scope, opts
    for _, val in parser.parser(strm, opts.filename, opts) do
      table.insert(vals, val)
    end
    for i = 1, #vals do
      local exprs = compile1(vals[i], scope, chunk, {nval = (((i < #vals) and 0) or nil), tail = (i == #vals)})
      keep_side_effects(exprs, chunk, nil, vals[i])
    end
    allowed_globals = old_globals
    utils.root.reset()
    return flatten(chunk, opts)
  end
  local function compile_string(str, opts)
    return compile_stream(parser["string-stream"](str), (opts or {}))
  end
  local function compile(ast, opts)
    local opts0 = utils.copy(opts)
    local old_globals = allowed_globals
    local chunk = {}
    local scope = (opts0.scope or make_scope(scopes.global))
    do end (function(tgt, m, ...) return tgt[m](tgt, ...) end)(utils.root, "set-reset")
    allowed_globals = opts0.allowedGlobals
    if (opts0.indent == nil) then
      opts0.indent = "  "
    end
    if opts0.requireAsInclude then
      scope.specials.require = require_include
    end
    utils.root.chunk, utils.root.scope, utils.root.options = chunk, scope, opts0
    local exprs = compile1(ast, scope, chunk, {tail = true})
    keep_side_effects(exprs, chunk, nil, ast)
    allowed_globals = old_globals
    utils.root.reset()
    return flatten(chunk, opts0)
  end
  local function traceback_frame(info)
    if ((info.what == "C") and info.name) then
      return string.format("  [C]: in function '%s'", info.name)
    elseif (info.what == "C") then
      return "  [C]: in ?"
    else
      local remap = fennel_sourcemap[info.source]
      if (remap and remap[info.currentline]) then
        if remap[info.currentline][1] then
          info.short_src = fennel_sourcemap[("@" .. remap[info.currentline][1])].short_src
        else
          info.short_src = remap.short_src
        end
        info.currentline = (remap[info.currentline][2] or -1)
      end
      if (info.what == "Lua") then
        local function _289_()
          if info.name then
            return ("'" .. info.name .. "'")
          else
            return "?"
          end
        end
        return string.format("  %s:%d: in function %s", info.short_src, info.currentline, _289_())
      elseif (info.short_src == "(tail call)") then
        return "  (tail call)"
      else
        return string.format("  %s:%d: in main chunk", info.short_src, info.currentline)
      end
    end
  end
  local function traceback(msg, start)
    local msg0 = tostring((msg or ""))
    if ((msg0:find("^Compile error") or msg0:find("^Parse error")) and not utils["debug-on?"]("trace")) then
      return msg0
    else
      local lines = {}
      if (msg0:find(":%d+: Compile error") or msg0:find(":%d+: Parse error")) then
        table.insert(lines, msg0)
      else
        local newmsg = msg0:gsub("^[^:]*:%d+:%s+", "runtime error: ")
        table.insert(lines, newmsg)
      end
      table.insert(lines, "stack traceback:")
      local done_3f, level = false, (start or 2)
      while not done_3f do
        do
          local _293_ = debug.getinfo(level, "Sln")
          if (_293_ == nil) then
            done_3f = true
          elseif (nil ~= _293_) then
            local info = _293_
            table.insert(lines, traceback_frame(info))
          end
        end
        level = (level + 1)
      end
      return table.concat(lines, "\n")
    end
  end
  local function entry_transform(fk, fv)
    local function _296_(k, v)
      if (type(k) == "number") then
        return k, fv(v)
      else
        return fk(k), fv(v)
      end
    end
    return _296_
  end
  local function mixed_concat(t, joiner)
    local seen = {}
    local ret, s = "", ""
    for k, v in ipairs(t) do
      table.insert(seen, k)
      ret = (ret .. s .. v)
      s = joiner
    end
    for k, v in utils.stablepairs(t) do
      if not seen[k] then
        ret = (ret .. s .. "[" .. k .. "]" .. "=" .. v)
        s = joiner
      end
    end
    return ret
  end
  local function do_quote(form, scope, parent, runtime_3f)
    local function q(x)
      return do_quote(x, scope, parent, runtime_3f)
    end
    if utils["varg?"](form) then
      assert_compile(not runtime_3f, "quoted ... may only be used at compile time", form)
      return "_VARARG"
    elseif utils["sym?"](form) then
      local filename
      if form.filename then
        filename = string.format("%q", form.filename)
      else
        filename = "nil"
      end
      local symstr = tostring(form)
      assert_compile(not runtime_3f, "symbols may only be used at compile time", form)
      if (symstr:find("#$") or symstr:find("#[:.]")) then
        return string.format("sym('%s', {filename=%s, line=%s})", autogensym(symstr, scope), filename, (form.line or "nil"))
      else
        return string.format("sym('%s', {quoted=true, filename=%s, line=%s})", symstr, filename, (form.line or "nil"))
      end
    elseif (utils["list?"](form) and utils["sym?"](form[1]) and (tostring(form[1]) == "unquote")) then
      local payload = form[2]
      local res = unpack(compile1(payload, scope, parent))
      return res[1]
    elseif utils["list?"](form) then
      local mapped
      local function _301_()
        return nil
      end
      mapped = utils.kvmap(form, entry_transform(_301_, q))
      local filename
      if form.filename then
        filename = string.format("%q", form.filename)
      else
        filename = "nil"
      end
      assert_compile(not runtime_3f, "lists may only be used at compile time", form)
      return string.format(("setmetatable({filename=%s, line=%s, bytestart=%s, %s}" .. ", getmetatable(list()))"), filename, (form.line or "nil"), (form.bytestart or "nil"), mixed_concat(mapped, ", "))
    elseif utils["sequence?"](form) then
      local mapped = utils.kvmap(form, entry_transform(q, q))
      local source = getmetatable(form)
      local filename
      if source.filename then
        filename = string.format("%q", source.filename)
      else
        filename = "nil"
      end
      local _304_
      if source then
        _304_ = source.line
      else
        _304_ = "nil"
      end
      return string.format("setmetatable({%s}, {filename=%s, line=%s, sequence=%s})", mixed_concat(mapped, ", "), filename, _304_, "(getmetatable(sequence()))['sequence']")
    elseif (type(form) == "table") then
      local mapped = utils.kvmap(form, entry_transform(q, q))
      local source = getmetatable(form)
      local filename
      if source.filename then
        filename = string.format("%q", source.filename)
      else
        filename = "nil"
      end
      local function _307_()
        if source then
          return source.line
        else
          return "nil"
        end
      end
      return string.format("setmetatable({%s}, {filename=%s, line=%s})", mixed_concat(mapped, ", "), filename, _307_())
    elseif (type(form) == "string") then
      return serialize_string(form)
    else
      return tostring(form)
    end
  end
  return {compile = compile, compile1 = compile1, ["compile-stream"] = compile_stream, ["compile-string"] = compile_string, emit = emit, destructure = destructure, ["require-include"] = require_include, autogensym = autogensym, gensym = gensym, ["do-quote"] = do_quote, ["global-mangling"] = global_mangling, ["global-unmangling"] = global_unmangling, ["apply-manglings"] = apply_manglings, macroexpand = macroexpand_2a, ["declare-local"] = declare_local, ["make-scope"] = make_scope, ["keep-side-effects"] = keep_side_effects, ["symbol-to-expression"] = symbol_to_expression, assert = assert_compile, scopes = scopes, traceback = traceback, metadata = make_metadata()}
end
package.preload["fennel.friend"] = package.preload["fennel.friend"] or function(...)
  local function ast_source(ast)
    local m = getmetatable(ast)
    return ((m and m.line and m) or (("table" == type(ast)) and ast) or {})
  end
  local suggestions = {["unexpected multi symbol (.*)"] = {"removing periods or colons from %s"}, ["use of global (.*) is aliased by a local"] = {"renaming local %s", "refer to the global using _G.%s instead of directly"}, ["local (.*) was overshadowed by a special form or macro"] = {"renaming local %s"}, ["global (.*) conflicts with local"] = {"renaming local %s"}, ["expected var (.*)"] = {"declaring %s using var instead of let/local", "introducing a new local instead of changing the value of %s"}, ["expected macros to be table"] = {"ensuring your macro definitions return a table"}, ["expected each macro to be function"] = {"ensuring that the value for each key in your macros table contains a function", "avoid defining nested macro tables"}, ["macro not found in macro module"] = {"checking the keys of the imported macro module's returned table"}, ["macro tried to bind (.*) without gensym"] = {"changing to %s# when introducing identifiers inside macros"}, ["unknown global in strict mode: (.*)"] = {"looking to see if there's a typo", "using the _G table instead, eg. _G.%s if you really want a global", "moving this code to somewhere that %s is in scope", "binding %s as a local in the scope of this code"}, ["expected a function.* to call"] = {"removing the empty parentheses", "using square brackets if you want an empty table"}, ["cannot call literal value"] = {"checking for typos", "checking for a missing function name"}, ["unexpected vararg"] = {"putting \"...\" at the end of the fn parameters if the vararg was intended"}, ["multisym method calls may only be in call position"] = {"using a period instead of a colon to reference a table's fields", "putting parens around this"}, ["unused local (.*)"] = {"fixing a typo so %s is used", "renaming the local to _%s"}, ["expected parameters"] = {"adding function parameters as a list of identifiers in brackets"}, ["unable to bind (.*)"] = {"replacing the %s with an identifier"}, ["expected rest argument before last parameter"] = {"moving & to right before the final identifier when destructuring"}, ["expected vararg as last parameter"] = {"moving the \"...\" to the end of the parameter list"}, ["expected symbol for function parameter: (.*)"] = {"changing %s to an identifier instead of a literal value"}, ["could not compile value of type "] = {"debugging the macro you're calling to return a list or table"}, ["expected local"] = {"looking for a typo", "looking for a local which is used out of its scope"}, ["expected body expression"] = {"putting some code in the body of this form after the bindings"}, ["expected binding and iterator"] = {"making sure you haven't omitted a local name or iterator"}, ["expected binding sequence"] = {"placing a table here in square brackets containing identifiers to bind"}, ["expected even number of name/value bindings"] = {"finding where the identifier or value is missing"}, ["may only be used at compile time"] = {"moving this to inside a macro if you need to manipulate symbols/lists", "using square brackets instead of parens to construct a table"}, ["unexpected closing delimiter (.)"] = {"deleting %s", "adding matching opening delimiter earlier"}, ["mismatched closing delimiter (.), expected (.)"] = {"replacing %s with %s", "deleting %s", "adding matching opening delimiter earlier"}, ["expected even number of values in table literal"] = {"removing a key", "adding a value"}, ["expected whitespace before opening delimiter"] = {"adding whitespace"}, ["illegal character: (.)"] = {"deleting or replacing %s", "avoiding reserved characters like \", \\, ', ~, ;, @, `, and comma"}, ["could not read number (.*)"] = {"removing the non-digit character", "beginning the identifier with a non-digit if it is not meant to be a number"}, ["can't start multisym segment with a digit"] = {"removing the digit", "adding a non-digit before the digit"}, ["malformed multisym"] = {"ensuring each period or colon is not followed by another period or colon"}, ["method must be last component"] = {"using a period instead of a colon for field access", "removing segments after the colon", "making the method call, then looking up the field on the result"}, ["$ and $... in hashfn are mutually exclusive"] = {"modifying the hashfn so it only contains $... or $, $1, $2, $3, etc"}, ["tried to reference a macro at runtime"] = {"renaming the macro so as not to conflict with locals"}, ["expected even number of pattern/body pairs"] = {"checking that every pattern has a body to go with it", "adding _ before the final body"}, ["unexpected arguments"] = {"removing an argument", "checking for typos"}, ["unexpected iterator clause"] = {"removing an argument", "checking for typos"}}
  local unpack = (table.unpack or _G.unpack)
  local function suggest(msg)
    local suggestion = nil
    for pat, sug in pairs(suggestions) do
      local matches = {msg:match(pat)}
      if (0 < #matches) then
        if ("table" == type(sug)) then
          local out = {}
          for _, s in ipairs(sug) do
            table.insert(out, s:format(unpack(matches)))
          end
          suggestion = out
        else
          suggestion = sug(matches)
        end
      end
    end
    return suggestion
  end
  local function read_line_from_file(filename, line)
    local bytes = 0
    local f = assert(io.open(filename))
    local _
    for _0 = 1, (line - 1) do
      bytes = (bytes + 1 + #f:read())
    end
    _ = nil
    local codeline = f:read()
    f:close()
    return codeline, bytes
  end
  local function read_line_from_string(matcher, target_line, _3fcurrent_line, _3fbytes)
    local this_line, newline = matcher()
    local current_line = (_3fcurrent_line or 1)
    local bytes = ((_3fbytes or 0) + #this_line + #newline)
    if (target_line == current_line) then
      return this_line, (bytes - #this_line - 1)
    elseif this_line then
      return read_line_from_string(matcher, target_line, (current_line + 1), bytes)
    end
  end
  local function read_line(filename, line, source)
    if source then
      return read_line_from_string(string.gmatch((source .. "\n"), "(.-)(\13?\n)"), line)
    else
      return read_line_from_file(filename, line)
    end
  end
  local function friendly_msg(msg, _116_, source)
    local _arg_117_ = _116_
    local filename = _arg_117_["filename"]
    local line = _arg_117_["line"]
    local bytestart = _arg_117_["bytestart"]
    local byteend = _arg_117_["byteend"]
    local ok, codeline, bol = pcall(read_line, filename, line, source)
    local suggestions0 = suggest(msg)
    local out = {msg, ""}
    if (ok and codeline) then
      table.insert(out, codeline)
    end
    if (ok and codeline and bytestart and byteend) then
      table.insert(out, (string.rep(" ", (bytestart - bol - 1)) .. "^" .. string.rep("^", math.min((byteend - bytestart), ((bol + #codeline) - bytestart)))))
    end
    if (ok and codeline and bytestart and not byteend) then
      table.insert(out, (string.rep("-", (bytestart - bol - 1)) .. "^"))
      table.insert(out, "")
    end
    if suggestions0 then
      for _, suggestion in ipairs(suggestions0) do
        table.insert(out, ("* Try %s."):format(suggestion))
      end
    end
    return table.concat(out, "\n")
  end
  local function assert_compile(condition, msg, ast, source)
    if not condition then
      local _let_122_ = ast_source(ast)
      local filename = _let_122_["filename"]
      local line = _let_122_["line"]
      error(friendly_msg(("Compile error in %s:%s\n  %s"):format((filename or "unknown"), (line or "?"), msg), ast_source(ast), source), 0)
    end
    return condition
  end
  local function parse_error(msg, filename, line, bytestart, source)
    return error(friendly_msg(("Parse error in %s:%s\n  %s"):format(filename, line, msg), {filename = filename, line = line, bytestart = bytestart}, source), 0)
  end
  return {["assert-compile"] = assert_compile, ["parse-error"] = parse_error}
end
package.preload["fennel.parser"] = package.preload["fennel.parser"] or function(...)
  local utils = require("fennel.utils")
  local friend = require("fennel.friend")
  local unpack = (table.unpack or _G.unpack)
  local function granulate(getchunk)
    local c, index, done_3f = "", 1, false
    local function _124_(parser_state)
      if not done_3f then
        if (index <= #c) then
          local b = c:byte(index)
          index = (index + 1)
          return b
        else
          local _125_ = getchunk(parser_state)
          local function _126_()
            local char = _125_
            return (char ~= "")
          end
          if ((nil ~= _125_) and _126_()) then
            local char = _125_
            c = char
            index = 2
            return c:byte()
          else
            local _ = _125_
            done_3f = true
            return nil
          end
        end
      end
    end
    local function _130_()
      c = ""
      return nil
    end
    return _124_, _130_
  end
  local function string_stream(str)
    local str0 = str:gsub("^#!", ";;")
    local index = 1
    local function _131_()
      local r = str0:byte(index)
      index = (index + 1)
      return r
    end
    return _131_
  end
  local delims = {[40] = 41, [41] = true, [91] = 93, [93] = true, [123] = 125, [125] = true}
  local function whitespace_3f(b)
    return ((b == 32) or ((b >= 9) and (b <= 13)))
  end
  local function sym_char_3f(b)
    local b0
    if ("number" == type(b)) then
      b0 = b
    else
      b0 = string.byte(b)
    end
    return ((b0 > 32) and not delims[b0] and (b0 ~= 127) and (b0 ~= 34) and (b0 ~= 39) and (b0 ~= 126) and (b0 ~= 59) and (b0 ~= 44) and (b0 ~= 64) and (b0 ~= 96))
  end
  local prefixes = {[35] = "hashfn", [39] = "quote", [44] = "unquote", [96] = "quote"}
  local function parser(getbyte, filename, options)
    local stack = {}
    local line = 1
    local byteindex = 0
    local lastb = nil
    local function ungetb(ub)
      if (ub == 10) then
        line = (line - 1)
      end
      byteindex = (byteindex - 1)
      lastb = ub
      return nil
    end
    local function getb()
      local r = nil
      if lastb then
        r, lastb = lastb, nil
      else
        r = getbyte({["stack-size"] = #stack})
      end
      byteindex = (byteindex + 1)
      if (r == 10) then
        line = (line + 1)
      end
      return r
    end
    assert(((nil == filename) or ("string" == type(filename))), "expected filename as second argument to parser")
    local function parse_error(msg, byteindex_override)
      local _let_136_ = (options or utils.root.options or {})
      local source = _let_136_["source"]
      local unfriendly = _let_136_["unfriendly"]
      utils.root.reset()
      if (unfriendly or not friend or not _G.io or not _G.io.read) then
        return error(string.format("%s:%s: Parse error: %s", (filename or "unknown"), (line or "?"), msg), 0)
      else
        return friend["parse-error"](msg, (filename or "unknown"), (line or "?"), (byteindex_override or byteindex), source)
      end
    end
    local function parse_stream()
      local whitespace_since_dispatch, done_3f, retval = true
      local function dispatch(v)
        local _138_ = stack[#stack]
        if (_138_ == nil) then
          retval, done_3f, whitespace_since_dispatch = v, true, false
          return nil
        elseif ((_G.type(_138_) == "table") and (nil ~= (_138_).prefix)) then
          local prefix = (_138_).prefix
          local source
          do
            local _139_ = table.remove(stack)
            do end (_139_)["byteend"] = byteindex
            source = _139_
          end
          local list = utils.list(utils.sym(prefix, source), v)
          for k, v0 in pairs(source) do
            list[k] = v0
          end
          return dispatch(list)
        elseif (nil ~= _138_) then
          local top = _138_
          whitespace_since_dispatch = false
          return table.insert(top, v)
        end
      end
      local function badend()
        local accum = utils.map(stack, "closer")
        local _141_
        if (#stack == 1) then
          _141_ = ""
        else
          _141_ = "s"
        end
        return parse_error(string.format("expected closing delimiter%s %s", _141_, string.char(unpack(accum))))
      end
      local function skip_whitespace(b)
        if (b and whitespace_3f(b)) then
          whitespace_since_dispatch = true
          return skip_whitespace(getb())
        elseif (not b and (#stack > 0)) then
          return badend()
        else
          return b
        end
      end
      local function parse_comment(b, contents)
        if (b and (10 ~= b)) then
          local function _145_()
            local _144_ = contents
            table.insert(_144_, string.char(b))
            return _144_
          end
          return parse_comment(getb(), _145_())
        elseif (options and options.comments) then
          return dispatch(utils.comment(table.concat(contents), {line = (line - 1), filename = filename}))
        else
          return b
        end
      end
      local function open_table(b)
        if not whitespace_since_dispatch then
          parse_error(("expected whitespace before opening delimiter " .. string.char(b)))
        end
        return table.insert(stack, {bytestart = byteindex, closer = delims[b], filename = filename, line = line})
      end
      local function close_list(list)
        return dispatch(setmetatable(list, getmetatable(utils.list())))
      end
      local function close_sequence(tbl)
        local val = utils.sequence(unpack(tbl))
        for k, v in pairs(tbl) do
          getmetatable(val)[k] = v
        end
        return dispatch(val)
      end
      local function add_comment_at(comments, index, node)
        local _148_ = comments[index]
        if (nil ~= _148_) then
          local existing = _148_
          return table.insert(existing, node)
        else
          local _ = _148_
          comments[index] = {node}
          return nil
        end
      end
      local function next_noncomment(tbl, i)
        if utils["comment?"](tbl[i]) then
          return next_noncomment(tbl, (i + 1))
        else
          return tbl[i]
        end
      end
      local function extract_comments(tbl)
        local comments = {keys = {}, values = {}, last = {}}
        while utils["comment?"](tbl[#tbl]) do
          table.insert(comments.last, 1, table.remove(tbl))
        end
        local last_key_3f = false
        for i, node in ipairs(tbl) do
          if not utils["comment?"](node) then
            last_key_3f = not last_key_3f
          elseif last_key_3f then
            add_comment_at(comments.values, next_noncomment(tbl, i), node)
          else
            add_comment_at(comments.keys, next_noncomment(tbl, i), node)
          end
        end
        for i = #tbl, 1, -1 do
          if utils["comment?"](tbl[i]) then
            table.remove(tbl, i)
          end
        end
        return comments
      end
      local function close_curly_table(tbl)
        local comments = extract_comments(tbl)
        local keys = {}
        local val = {}
        if ((#tbl % 2) ~= 0) then
          byteindex = (byteindex - 1)
          parse_error("expected even number of values in table literal")
        end
        setmetatable(val, tbl)
        for i = 1, #tbl, 2 do
          if ((tostring(tbl[i]) == ":") and utils["sym?"](tbl[(i + 1)]) and utils["sym?"](tbl[i])) then
            tbl[i] = tostring(tbl[(i + 1)])
          end
          val[tbl[i]] = tbl[(i + 1)]
          table.insert(keys, tbl[i])
        end
        tbl.comments = comments
        tbl.keys = keys
        return dispatch(val)
      end
      local function close_table(b)
        local top = table.remove(stack)
        if (top == nil) then
          parse_error(("unexpected closing delimiter " .. string.char(b)))
        end
        if (top.closer and (top.closer ~= b)) then
          parse_error(("mismatched closing delimiter " .. string.char(b) .. ", expected " .. string.char(top.closer)))
        end
        top.byteend = byteindex
        if (b == 41) then
          return close_list(top)
        elseif (b == 93) then
          return close_sequence(top)
        else
          return close_curly_table(top)
        end
      end
      local function parse_string_loop(chars, b, state)
        table.insert(chars, b)
        local state0
        do
          local _158_ = {state, b}
          if ((_G.type(_158_) == "table") and ((_158_)[1] == "base") and ((_158_)[2] == 92)) then
            state0 = "backslash"
          elseif ((_G.type(_158_) == "table") and ((_158_)[1] == "base") and ((_158_)[2] == 34)) then
            state0 = "done"
          else
            local _ = _158_
            state0 = "base"
          end
        end
        if (b and (state0 ~= "done")) then
          return parse_string_loop(chars, getb(), state0)
        else
          return b
        end
      end
      local function escape_char(c)
        return ({[7] = "\\a", [8] = "\\b", [9] = "\\t", [10] = "\\n", [11] = "\\v", [12] = "\\f", [13] = "\\r"})[c:byte()]
      end
      local function parse_string()
        table.insert(stack, {closer = 34})
        local chars = {34}
        if not parse_string_loop(chars, getb(), "base") then
          badend()
        end
        table.remove(stack)
        local raw = string.char(unpack(chars))
        local formatted = raw:gsub("[\7-\13]", escape_char)
        local _162_ = (rawget(_G, "loadstring") or load)(("return " .. formatted))
        if (nil ~= _162_) then
          local load_fn = _162_
          return dispatch(load_fn())
        elseif (_162_ == nil) then
          return parse_error(("Invalid string: " .. raw))
        end
      end
      local function parse_prefix(b)
        table.insert(stack, {prefix = prefixes[b], filename = filename, line = line, bytestart = byteindex})
        local nextb = getb()
        if (whitespace_3f(nextb) or (true == delims[nextb])) then
          if (b ~= 35) then
            parse_error("invalid whitespace after quoting prefix")
          end
          table.remove(stack)
          dispatch(utils.sym("#"))
        end
        return ungetb(nextb)
      end
      local function parse_sym_loop(chars, b)
        if (b and sym_char_3f(b)) then
          table.insert(chars, b)
          return parse_sym_loop(chars, getb())
        else
          if b then
            ungetb(b)
          end
          return chars
        end
      end
      local function parse_number(rawstr)
        local number_with_stripped_underscores = (not rawstr:find("^_") and rawstr:gsub("_", ""))
        if rawstr:match("^%d") then
          dispatch((tonumber(number_with_stripped_underscores) or parse_error(("could not read number \"" .. rawstr .. "\""))))
          return true
        else
          local _168_ = tonumber(number_with_stripped_underscores)
          if (nil ~= _168_) then
            local x = _168_
            dispatch(x)
            return true
          else
            local _ = _168_
            return false
          end
        end
      end
      local function check_malformed_sym(rawstr)
        if (rawstr:match("^~") and (rawstr ~= "~=")) then
          return parse_error("illegal character: ~")
        elseif rawstr:match("%.[0-9]") then
          return parse_error(("can't start multisym segment with a digit: " .. rawstr), (((byteindex - #rawstr) + rawstr:find("%.[0-9]")) + 1))
        elseif (rawstr:match("[%.:][%.:]") and (rawstr ~= "..") and (rawstr ~= "$...")) then
          return parse_error(("malformed multisym: " .. rawstr), ((byteindex - #rawstr) + 1 + rawstr:find("[%.:][%.:]")))
        elseif ((rawstr ~= ":") and rawstr:match(":$")) then
          return parse_error(("malformed multisym: " .. rawstr), ((byteindex - #rawstr) + 1 + rawstr:find(":$")))
        elseif rawstr:match(":.+[%.:]") then
          return parse_error(("method must be last component of multisym: " .. rawstr), ((byteindex - #rawstr) + rawstr:find(":.+[%.:]")))
        else
          return rawstr
        end
      end
      local function parse_sym(b)
        local bytestart = byteindex
        local rawstr = string.char(unpack(parse_sym_loop({b}, getb())))
        if (rawstr == "true") then
          return dispatch(true)
        elseif (rawstr == "false") then
          return dispatch(false)
        elseif (rawstr == "...") then
          return dispatch(utils.varg())
        elseif rawstr:match("^:.+$") then
          return dispatch(rawstr:sub(2))
        elseif not parse_number(rawstr) then
          return dispatch(utils.sym(check_malformed_sym(rawstr), {byteend = byteindex, bytestart = bytestart, filename = filename, line = line}))
        end
      end
      local function parse_loop(b)
        if not b then
        elseif (b == 59) then
          parse_comment(getb(), {";"})
        elseif (type(delims[b]) == "number") then
          open_table(b)
        elseif delims[b] then
          close_table(b)
        elseif (b == 34) then
          parse_string(b)
        elseif prefixes[b] then
          parse_prefix(b)
        elseif (sym_char_3f(b) or (b == string.byte("~"))) then
          parse_sym(b)
        elseif not utils.hook("illegal-char", b, getb, ungetb, dispatch) then
          parse_error(("illegal character: " .. string.char(b)))
        end
        if not b then
          return nil
        elseif done_3f then
          return true, retval
        else
          return parse_loop(skip_whitespace(getb()))
        end
      end
      return parse_loop(skip_whitespace(getb()))
    end
    local function _175_()
      stack, line, byteindex = {}, 1, 0
      return nil
    end
    return parse_stream, _175_
  end
  return {granulate = granulate, parser = parser, ["string-stream"] = string_stream, ["sym-char?"] = sym_char_3f}
end
local utils
package.preload["fennel.view"] = package.preload["fennel.view"] or function(...)
  local type_order = {number = 1, boolean = 2, string = 3, table = 4, ["function"] = 5, userdata = 6, thread = 7}
  local function sort_keys(_1_, _3_)
    local _arg_2_ = _1_
    local a = _arg_2_[1]
    local _arg_4_ = _3_
    local b = _arg_4_[1]
    local ta = type(a)
    local tb = type(b)
    if ((ta == tb) and ((ta == "string") or (ta == "number"))) then
      return (a < b)
    else
      local dta = type_order[ta]
      local dtb = type_order[tb]
      if (dta and dtb) then
        return (dta < dtb)
      elseif dta then
        return true
      elseif dtb then
        return false
      else
        return (ta < tb)
      end
    end
  end
  local function max_index_gap(kv)
    local gap = 0
    if (#kv > 0) then
      local i = 0
      for _, _7_ in ipairs(kv) do
        local _each_8_ = _7_
        local k = _each_8_[1]
        if ((k - i) > gap) then
          gap = (k - i)
        end
        i = k
      end
    end
    return gap
  end
  local function fill_gaps(kv)
    local missing_indexes = {}
    local i = 0
    for _, _11_ in ipairs(kv) do
      local _each_12_ = _11_
      local j = _each_12_[1]
      i = (i + 1)
      while (i < j) do
        table.insert(missing_indexes, i)
        i = (i + 1)
      end
    end
    for _, k in ipairs(missing_indexes) do
      table.insert(kv, k, {k})
    end
    return nil
  end
  local function table_kv_pairs(t, options)
    local assoc_3f = false
    local kv = {}
    local insert = table.insert
    for k, v in pairs(t) do
      if (type(k) ~= "number") then
        assoc_3f = true
      end
      insert(kv, {k, v})
    end
    table.sort(kv, sort_keys)
    if not assoc_3f then
      local gap = max_index_gap(kv)
      if (max_index_gap(kv) > options["max-sparse-gap"]) then
        assoc_3f = true
      else
        fill_gaps(kv)
      end
    end
    if (#kv == 0) then
      return kv, "empty"
    else
      local function _16_()
        if assoc_3f then
          return "table"
        else
          return "seq"
        end
      end
      return kv, _16_()
    end
  end
  local function count_table_appearances(t, appearances)
    if (type(t) == "table") then
      if not appearances[t] then
        appearances[t] = 1
        for k, v in pairs(t) do
          count_table_appearances(k, appearances)
          count_table_appearances(v, appearances)
        end
      else
        appearances[t] = ((appearances[t] or 0) + 1)
      end
    end
    return appearances
  end
  local function save_table(t, seen)
    local seen0 = (seen or {len = 0})
    local id = (seen0.len + 1)
    if not (seen0)[t] then
      seen0[t] = id
      seen0.len = id
    end
    return seen0
  end
  local function detect_cycle(t, seen, _3fk)
    if ("table" == type(t)) then
      seen[t] = true
      local _21_, _22_ = next(t, _3fk)
      if ((nil ~= _21_) and (nil ~= _22_)) then
        local k = _21_
        local v = _22_
        return (seen[k] or detect_cycle(k, seen) or seen[v] or detect_cycle(v, seen) or detect_cycle(t, seen, k))
      end
    end
  end
  local function visible_cycle_3f(t, options)
    return (options["detect-cycles?"] and detect_cycle(t, {}) and save_table(t, options.seen) and (1 < (options.appearances[t] or 0)))
  end
  local function table_indent(t, indent, id)
    local opener_length
    if id then
      opener_length = (#tostring(id) + 2)
    else
      opener_length = 1
    end
    return (indent + opener_length)
  end
  local pp = nil
  local function concat_table_lines(elements, options, multiline_3f, indent, table_type, prefix)
    local indent_str = ("\n" .. string.rep(" ", indent))
    local open
    local _26_
    if ("seq" == table_type) then
      _26_ = "["
    else
      _26_ = "{"
    end
    open = ((prefix or "") .. _26_)
    local close
    if ("seq" == table_type) then
      close = "]"
    else
      close = "}"
    end
    local oneline = (open .. table.concat(elements, " ") .. close)
    if (not options["one-line?"] and (multiline_3f or ((indent + #oneline) > options["line-length"]))) then
      return (open .. table.concat(elements, indent_str) .. close)
    else
      return oneline
    end
  end
  local function pp_associative(t, kv, options, indent, key_3f)
    local multiline_3f = false
    local id = options.seen[t]
    if (options.level >= options.depth) then
      return "{...}"
    elseif (id and options["detect-cycles?"]) then
      return ("@" .. id .. "{...}")
    else
      local visible_cycle_3f0 = visible_cycle_3f(t, options)
      local id0 = (visible_cycle_3f0 and options.seen[t])
      local indent0 = table_indent(t, indent, id0)
      local slength
      local function _31_()
        local _30_ = rawget(_G, "utf8")
        if _30_ then
          return (_30_).len
        else
          return _30_
        end
      end
      local function _33_(_241)
        return #_241
      end
      slength = ((options["utf8?"] and _31_()) or _33_)
      local prefix
      if visible_cycle_3f0 then
        prefix = ("@" .. id0)
      else
        prefix = ""
      end
      local items
      do
        local tbl_13_auto = {}
        for _, _35_ in pairs(kv) do
          local _each_36_ = _35_
          local k = _each_36_[1]
          local v = _each_36_[2]
          local _37_
          do
            local k0 = pp(k, options, (indent0 + 1), true)
            local v0 = pp(v, options, (indent0 + slength(k0) + 1))
            multiline_3f = (multiline_3f or k0:find("\n") or v0:find("\n"))
            _37_ = (k0 .. " " .. v0)
          end
          tbl_13_auto[(#tbl_13_auto + 1)] = _37_
        end
        items = tbl_13_auto
      end
      return concat_table_lines(items, options, multiline_3f, indent0, "table", prefix)
    end
  end
  local function pp_sequence(t, kv, options, indent)
    local multiline_3f = false
    local id = options.seen[t]
    if (options.level >= options.depth) then
      return "[...]"
    elseif (id and options["detect-cycles?"]) then
      return ("@" .. id .. "[...]")
    else
      local visible_cycle_3f0 = visible_cycle_3f(t, options)
      local id0 = (visible_cycle_3f0 and options.seen[t])
      local indent0 = table_indent(t, indent, id0)
      local prefix
      if visible_cycle_3f0 then
        prefix = ("@" .. id0)
      else
        prefix = ""
      end
      local items
      do
        local tbl_13_auto = {}
        for _, _40_ in pairs(kv) do
          local _each_41_ = _40_
          local _0 = _each_41_[1]
          local v = _each_41_[2]
          local _42_
          do
            local v0 = pp(v, options, indent0)
            multiline_3f = (multiline_3f or v0:find("\n"))
            _42_ = v0
          end
          tbl_13_auto[(#tbl_13_auto + 1)] = _42_
        end
        items = tbl_13_auto
      end
      return concat_table_lines(items, options, multiline_3f, indent0, "seq", prefix)
    end
  end
  local function concat_lines(lines, options, indent, force_multi_line_3f)
    if (#lines == 0) then
      if options["empty-as-sequence?"] then
        return "[]"
      else
        return "{}"
      end
    else
      local oneline
      local _45_
      do
        local tbl_13_auto = {}
        for _, line in ipairs(lines) do
          tbl_13_auto[(#tbl_13_auto + 1)] = line:gsub("^%s+", "")
        end
        _45_ = tbl_13_auto
      end
      oneline = table.concat(_45_, " ")
      if (not options["one-line?"] and (force_multi_line_3f or oneline:find("\n") or ((indent + #oneline) > options["line-length"]))) then
        return table.concat(lines, ("\n" .. string.rep(" ", indent)))
      else
        return oneline
      end
    end
  end
  local function pp_metamethod(t, metamethod, options, indent)
    if (options.level >= options.depth) then
      if options["empty-as-sequence?"] then
        return "[...]"
      else
        return "{...}"
      end
    else
      local _
      local function _49_(_241)
        return visible_cycle_3f(_241, options)
      end
      options["visible-cycle?"] = _49_
      _ = nil
      local lines, force_multi_line_3f = metamethod(t, pp, options, indent)
      options["visible-cycle?"] = nil
      local _50_ = type(lines)
      if (_50_ == "string") then
        return lines
      elseif (_50_ == "table") then
        return concat_lines(lines, options, indent, force_multi_line_3f)
      else
        local _0 = _50_
        return error("__fennelview metamethod must return a table of lines")
      end
    end
  end
  local function pp_table(x, options, indent)
    options.level = (options.level + 1)
    local x0
    do
      local _53_
      if options["metamethod?"] then
        local _54_ = x
        if _54_ then
          local _55_ = getmetatable(_54_)
          if _55_ then
            _53_ = (_55_).__fennelview
          else
            _53_ = _55_
          end
        else
          _53_ = _54_
        end
      else
      _53_ = nil
      end
      if (nil ~= _53_) then
        local metamethod = _53_
        x0 = pp_metamethod(x, metamethod, options, indent)
      else
        local _ = _53_
        local _59_, _60_ = table_kv_pairs(x, options)
        if (true and (_60_ == "empty")) then
          local _0 = _59_
          if options["empty-as-sequence?"] then
            x0 = "[]"
          else
            x0 = "{}"
          end
        elseif ((nil ~= _59_) and (_60_ == "table")) then
          local kv = _59_
          x0 = pp_associative(x, kv, options, indent)
        elseif ((nil ~= _59_) and (_60_ == "seq")) then
          local kv = _59_
          x0 = pp_sequence(x, kv, options, indent)
        else
        x0 = nil
        end
      end
    end
    options.level = (options.level - 1)
    return x0
  end
  local function number__3estring(n)
    local _64_ = string.gsub(tostring(n), ",", ".")
    return _64_
  end
  local function colon_string_3f(s)
    return s:find("^[-%w?^_!$%&*+./@|<=>]+$")
  end
  local function pp_string(str, options, indent)
    local escs
    local _65_
    if (options["escape-newlines?"] and (#str < (options["line-length"] - indent))) then
      _65_ = "\\n"
    else
      _65_ = "\n"
    end
    local function _67_(_241, _242)
      return ("\\%03d"):format(_242:byte())
    end
    escs = setmetatable({["\7"] = "\\a", ["\8"] = "\\b", ["\12"] = "\\f", ["\11"] = "\\v", ["\13"] = "\\r", ["\9"] = "\\t", ["\\"] = "\\\\", ["\""] = "\\\"", ["\n"] = _65_}, {__index = _67_})
    return ("\"" .. str:gsub("[%c\\\"]", escs) .. "\"")
  end
  local function make_options(t, options)
    local defaults = {["line-length"] = 80, ["one-line?"] = false, depth = 128, ["detect-cycles?"] = true, ["empty-as-sequence?"] = false, ["metamethod?"] = true, ["prefer-colon?"] = false, ["escape-newlines?"] = false, ["utf8?"] = true, ["max-sparse-gap"] = 10}
    local overrides = {level = 0, appearances = count_table_appearances(t, {}), seen = {len = 0}}
    for k, v in pairs((options or {})) do
      defaults[k] = v
    end
    for k, v in pairs(overrides) do
      defaults[k] = v
    end
    return defaults
  end
  local function _68_(x, options, indent, colon_3f)
    local indent0 = (indent or 0)
    local options0 = (options or make_options(x))
    local x0
    if options0.preprocess then
      x0 = options0.preprocess(x, options0)
    else
      x0 = x
    end
    local tv = type(x0)
    local function _71_()
      local _70_ = getmetatable(x0)
      if _70_ then
        return (_70_).__fennelview
      else
        return _70_
      end
    end
    if ((tv == "table") or ((tv == "userdata") and _71_())) then
      return pp_table(x0, options0, indent0)
    elseif (tv == "number") then
      return number__3estring(x0)
    else
      local function _73_()
        if (colon_3f ~= nil) then
          return colon_3f
        elseif ("function" == type(options0["prefer-colon?"])) then
          return options0["prefer-colon?"](x0)
        else
          return options0["prefer-colon?"]
        end
      end
      if ((tv == "string") and colon_string_3f(x0) and _73_()) then
        return (":" .. x0)
      elseif (tv == "string") then
        return pp_string(x0, options0, indent0)
      elseif ((tv == "boolean") or (tv == "nil")) then
        return tostring(x0)
      else
        return ("#<" .. tostring(x0) .. ">")
      end
    end
  end
  pp = _68_
  local function view(x, options)
    return pp(x, make_options(x, options), 0)
  end
  return view
end
package.preload["fennel.utils"] = package.preload["fennel.utils"] or function(...)
  local view = require("fennel.view")
  local function stablepairs(t)
    local keys = {}
    local used_keys = {}
    local succ = {}
    if (getmetatable(t) and getmetatable(t).keys) then
      for _, k in ipairs(getmetatable(t).keys) do
        if used_keys[k] then
          for i = #keys, 1, -1 do
            if (keys[i] == k) then
              table.remove(keys, i)
            end
          end
        end
        used_keys[k] = true
        table.insert(keys, k)
      end
    else
      for k in pairs(t) do
        table.insert(keys, k)
      end
      local function _77_(_241, _242)
        return (tostring(_241) < tostring(_242))
      end
      table.sort(keys, _77_)
    end
    for i, k in ipairs(keys) do
      succ[k] = keys[(i + 1)]
    end
    local function stablenext(tbl, idx)
      local key
      if (idx == nil) then
        key = keys[1]
      else
        key = succ[idx]
      end
      local value
      if (key == nil) then
        value = nil
      else
        value = tbl[key]
      end
      return key, value
    end
    return stablenext, t, nil
  end
  local function map(t, f, out)
    local out0 = (out or {})
    local f0
    if (type(f) == "function") then
      f0 = f
    else
      local function _81_(_241)
        return (_241)[f]
      end
      f0 = _81_
    end
    for _, x in ipairs(t) do
      local _83_ = f0(x)
      if (nil ~= _83_) then
        local v = _83_
        table.insert(out0, v)
      end
    end
    return out0
  end
  local function kvmap(t, f, out)
    local out0 = (out or {})
    local f0
    if (type(f) == "function") then
      f0 = f
    else
      local function _85_(_241)
        return (_241)[f]
      end
      f0 = _85_
    end
    for k, x in stablepairs(t) do
      local _87_, _88_ = f0(k, x)
      if ((nil ~= _87_) and (nil ~= _88_)) then
        local key = _87_
        local value = _88_
        out0[key] = value
      elseif (nil ~= _87_) then
        local value = _87_
        table.insert(out0, value)
      end
    end
    return out0
  end
  local function copy(from, to)
    local to0 = (to or {})
    for k, v in pairs((from or {})) do
      to0[k] = v
    end
    return to0
  end
  local function member_3f(x, tbl, n)
    local _90_ = tbl[(n or 1)]
    if (_90_ == x) then
      return true
    elseif (_90_ == nil) then
      return nil
    else
      local _ = _90_
      return member_3f(x, tbl, ((n or 1) + 1))
    end
  end
  local function allpairs(tbl)
    assert((type(tbl) == "table"), "allpairs expects a table")
    local t = tbl
    local seen = {}
    local function allpairs_next(_, state)
      local next_state, value = next(t, state)
      if seen[next_state] then
        return allpairs_next(nil, next_state)
      elseif next_state then
        seen[next_state] = true
        return next_state, value
      else
        local _92_ = getmetatable(t)
        if ((_G.type(_92_) == "table") and true) then
          local __index = (_92_).__index
          if ("table" == type(__index)) then
            t = __index
            return allpairs_next(t)
          end
        end
      end
    end
    return allpairs_next
  end
  local function deref(self)
    return self[1]
  end
  local nil_sym = nil
  local function list__3estring(self, tostring2)
    local safe, max = {}, 0
    for k in pairs(self) do
      if ((type(k) == "number") and (k > max)) then
        max = k
      end
    end
    for i = 1, max do
      safe[i] = (((self[i] == nil) and nil_sym) or self[i])
    end
    return ("(" .. table.concat(map(safe, (tostring2 or view)), " ", 1, max) .. ")")
  end
  local function comment_view(c)
    return c, true
  end
  local function sym_3d(a, b)
    return ((deref(a) == deref(b)) and (getmetatable(a) == getmetatable(b)))
  end
  local function sym_3c(a, b)
    return (a[1] < tostring(b))
  end
  local symbol_mt = {"SYMBOL", __fennelview = deref, __tostring = deref, __eq = sym_3d, __lt = sym_3c}
  local expr_mt
  local function _97_(x)
    return tostring(deref(x))
  end
  expr_mt = {"EXPR", __tostring = _97_}
  local list_mt = {"LIST", __fennelview = list__3estring, __tostring = list__3estring}
  local comment_mt = {"COMMENT", __fennelview = comment_view, __tostring = deref, __eq = sym_3d, __lt = sym_3c}
  local sequence_marker = {"SEQUENCE"}
  local vararg = setmetatable({"..."}, {"VARARG", __fennelview = deref, __tostring = deref})
  local getenv
  local function _98_()
    return nil
  end
  getenv = ((os and os.getenv) or _98_)
  local function debug_on_3f(flag)
    local level = (getenv("FENNEL_DEBUG") or "")
    return ((level == "all") or level:find(flag))
  end
  local function list(...)
    return setmetatable({...}, list_mt)
  end
  local function sym(str, _3fsource, _3fscope)
    local s = {str, ["?scope"] = _3fscope}
    for k, v in pairs((_3fsource or {})) do
      if (type(k) == "string") then
        s[k] = v
      end
    end
    return setmetatable(s, symbol_mt)
  end
  nil_sym = sym("nil")
  local function sequence(...)
    return setmetatable({...}, {sequence = sequence_marker})
  end
  local function expr(strcode, etype)
    return setmetatable({strcode, type = etype}, expr_mt)
  end
  local function comment_2a(contents, _3fsource)
    local _let_100_ = (_3fsource or {})
    local filename = _let_100_["filename"]
    local line = _let_100_["line"]
    return setmetatable({contents, filename = filename, line = line}, comment_mt)
  end
  local function varg()
    return vararg
  end
  local function expr_3f(x)
    return ((type(x) == "table") and (getmetatable(x) == expr_mt) and x)
  end
  local function varg_3f(x)
    return ((x == vararg) and x)
  end
  local function list_3f(x)
    return ((type(x) == "table") and (getmetatable(x) == list_mt) and x)
  end
  local function sym_3f(x)
    return ((type(x) == "table") and (getmetatable(x) == symbol_mt) and x)
  end
  local function sequence_3f(x)
    local mt = ((type(x) == "table") and getmetatable(x))
    return (mt and (mt.sequence == sequence_marker) and x)
  end
  local function comment_3f(x)
    return ((type(x) == "table") and (getmetatable(x) == comment_mt) and x)
  end
  local function table_3f(x)
    return ((type(x) == "table") and (x ~= vararg) and (getmetatable(x) ~= list_mt) and (getmetatable(x) ~= symbol_mt) and not comment_3f(x) and x)
  end
  local function multi_sym_3f(str)
    if sym_3f(str) then
      return multi_sym_3f(tostring(str))
    elseif (type(str) ~= "string") then
      return false
    else
      local parts = {}
      for part in str:gmatch("[^%.%:]+[%.%:]?") do
        local last_char = part:sub(( - 1))
        if (last_char == ":") then
          parts["multi-sym-method-call"] = true
        end
        if ((last_char == ":") or (last_char == ".")) then
          parts[(#parts + 1)] = part:sub(1, ( - 2))
        else
          parts[(#parts + 1)] = part
        end
      end
      return ((#parts > 0) and (str:match("%.") or str:match(":")) and not str:match("%.%.") and (str:byte() ~= string.byte(".")) and (str:byte(( - 1)) ~= string.byte(".")) and parts)
    end
  end
  local function quoted_3f(symbol)
    return symbol.quoted
  end
  local function walk_tree(root, f, custom_iterator)
    local function walk(iterfn, parent, idx, node)
      if f(idx, node, parent) then
        for k, v in iterfn(node) do
          walk(iterfn, node, k, v)
        end
        return nil
      end
    end
    walk((custom_iterator or pairs), nil, nil, root)
    return root
  end
  local lua_keywords = {"and", "break", "do", "else", "elseif", "end", "false", "for", "function", "if", "in", "local", "nil", "not", "or", "repeat", "return", "then", "true", "until", "while", "goto"}
  for i, v in ipairs(lua_keywords) do
    lua_keywords[v] = i
  end
  local function valid_lua_identifier_3f(str)
    return (str:match("^[%a_][%w_]*$") and not lua_keywords[str])
  end
  local propagated_options = {"allowedGlobals", "indent", "correlate", "useMetadata", "env", "compiler-env", "compilerEnv"}
  local function propagate_options(options, subopts)
    for _, name in ipairs(propagated_options) do
      subopts[name] = options[name]
    end
    return subopts
  end
  local root
  local function _105_()
  end
  root = {chunk = nil, scope = nil, options = nil, reset = _105_}
  root["set-reset"] = function(_106_)
    local _arg_107_ = _106_
    local chunk = _arg_107_["chunk"]
    local scope = _arg_107_["scope"]
    local options = _arg_107_["options"]
    local reset = _arg_107_["reset"]
    root.reset = function()
      root.chunk, root.scope, root.options, root.reset = chunk, scope, options, reset
      return nil
    end
    return root.reset
  end
  local function hook(event, ...)
    local result = nil
    if (root.options and root.options.plugins) then
      for _, plugin in ipairs(root.options.plugins) do
        do
          local _108_ = plugin[event]
          if (nil ~= _108_) then
            local f = _108_
            result = f(...)
          end
        end
        if (nil ~= result) then
          return result
        end
      end
      return nil
    end
  end
  return {allpairs = allpairs, stablepairs = stablepairs, copy = copy, kvmap = kvmap, map = map, ["walk-tree"] = walk_tree, ["member?"] = member_3f, list = list, sequence = sequence, sym = sym, varg = varg, expr = expr, comment = comment_2a, ["comment?"] = comment_3f, ["expr?"] = expr_3f, ["list?"] = list_3f, ["multi-sym?"] = multi_sym_3f, ["sequence?"] = sequence_3f, ["sym?"] = sym_3f, ["table?"] = table_3f, ["varg?"] = varg_3f, ["quoted?"] = quoted_3f, ["valid-lua-identifier?"] = valid_lua_identifier_3f, ["lua-keywords"] = lua_keywords, hook = hook, ["propagate-options"] = propagate_options, root = root, ["debug-on?"] = debug_on_3f, path = table.concat({"./?.fnl", "./?/init.fnl", getenv("FENNEL_PATH")}, ";"), ["macro-path"] = table.concat({"./?.fnl", "./?/init-macros.fnl", "./?/init.fnl", getenv("FENNEL_MACRO_PATH")}, ";")}
end
utils = require("fennel.utils")
local parser = require("fennel.parser")
local compiler = require("fennel.compiler")
local specials = require("fennel.specials")
local repl = require("fennel.repl")
local view = require("fennel.view")
local function eval_env(env, opts)
  if (env == "_COMPILER") then
    local env0 = specials["make-compiler-env"](nil, compiler.scopes.compiler, {}, opts)
    if (opts.allowedGlobals == nil) then
      opts.allowedGlobals = specials["current-global-names"](env0)
    end
    return specials["wrap-env"](env0)
  else
    return (env and specials["wrap-env"](env))
  end
end
local function eval_opts(options, str)
  local opts = utils.copy(options)
  if (opts.allowedGlobals == nil) then
    opts.allowedGlobals = specials["current-global-names"](opts.env)
  end
  if (not opts.filename and not opts.source) then
    opts.source = str
  end
  if (opts.env == "_COMPILER") then
    opts.scope = compiler["make-scope"](compiler.scopes.compiler)
  end
  return opts
end
local function eval(str, options, ...)
  local opts = eval_opts(options, str)
  local env = eval_env(opts.env, opts)
  local lua_source = compiler["compile-string"](str, opts)
  local loader
  local function _563_(...)
    if opts.filename then
      return ("@" .. opts.filename)
    else
      return str
    end
  end
  loader = specials["load-code"](lua_source, env, _563_(...))
  opts.filename = nil
  return loader(...)
end
local function dofile_2a(filename, options, ...)
  local opts = utils.copy(options)
  local f = assert(io.open(filename, "rb"))
  local source = assert(f:read("*all"), ("Could not read " .. filename))
  f:close()
  opts.filename = filename
  return eval(source, opts, ...)
end
local function syntax()
  local body_3f = {"when", "with-open", "collect", "icollect", "lambda", "\206\187", "macro", "match", "accumulate"}
  local binding_3f = {"collect", "icollect", "each", "for", "let", "with-open", "accumulate"}
  local define_3f = {"fn", "lambda", "\206\187", "var", "local", "macro", "macros", "global"}
  local out = {}
  for k, v in pairs(compiler.scopes.global.specials) do
    local metadata = (compiler.metadata[v] or {})
    do end (out)[k] = {["special?"] = true, ["body-form?"] = metadata["fnl/body-form?"], ["binding-form?"] = utils["member?"](k, binding_3f), ["define?"] = utils["member?"](k, define_3f)}
  end
  for k, v in pairs(compiler.scopes.global.macros) do
    out[k] = {["macro?"] = true, ["body-form?"] = utils["member?"](k, body_3f), ["binding-form?"] = utils["member?"](k, binding_3f), ["define?"] = utils["member?"](k, define_3f)}
  end
  for k, v in pairs(_G) do
    local _564_ = type(v)
    if (_564_ == "function") then
      out[k] = {["global?"] = true, ["function?"] = true}
    elseif (_564_ == "table") then
      for k2, v2 in pairs(v) do
        if (("function" == type(v2)) and (k ~= "_G")) then
          out[(k .. "." .. k2)] = {["function?"] = true, ["global?"] = true}
        end
      end
      out[k] = {["global?"] = true}
    end
  end
  return out
end
local mod = {list = utils.list, ["list?"] = utils["list?"], sym = utils.sym, ["sym?"] = utils["sym?"], sequence = utils.sequence, ["sequence?"] = utils["sequence?"], comment = utils.comment, ["comment?"] = utils["comment?"], varg = utils.varg, path = utils.path, ["macro-path"] = utils["macro-path"], ["sym-char?"] = parser["sym-char?"], parser = parser.parser, granulate = parser.granulate, ["string-stream"] = parser["string-stream"], compile = compiler.compile, ["compile-string"] = compiler["compile-string"], ["compile-stream"] = compiler["compile-stream"], compile1 = compiler.compile1, traceback = compiler.traceback, mangle = compiler["global-mangling"], unmangle = compiler["global-unmangling"], metadata = compiler.metadata, scope = compiler["make-scope"], gensym = compiler.gensym, ["load-code"] = specials["load-code"], ["macro-loaded"] = specials["macro-loaded"], ["macro-searchers"] = specials["macro-searchers"], ["search-module"] = specials["search-module"], ["make-searcher"] = specials["make-searcher"], makeSearcher = specials["make-searcher"], searcher = specials["make-searcher"](), doc = specials.doc, view = view, eval = eval, dofile = dofile_2a, version = "1.0.0-dev", repl = repl, syntax = syntax, loadCode = specials["load-code"], make_searcher = specials["make-searcher"], searchModule = specials["search-module"], macroLoaded = specials["macro-loaded"], compileStream = compiler["compile-stream"], compileString = compiler["compile-string"], stringStream = parser["string-stream"]}
utils["fennel-module"] = mod
do
  local builtin_macros = [===[;; This module contains all the built-in Fennel macros. Unlike all the other
  ;; modules that are loaded by the old bootstrap compiler, this runs in the
  ;; compiler scope of the version of the compiler being defined.
  
  ;; The code for these macros is somewhat idiosyncratic because it cannot use any
  ;; macros which have not yet been defined.
  
  ;; TODO: some of these macros modify their arguments; we should stop doing that,
  ;; but in a way that preserves file/line metadata.
  
  (fn ->* [val ...]
    "Thread-first macro.
  Take the first value and splice it into the second form as its first argument.
  The value of the second form is spliced into the first arg of the third, etc."
    (var x val)
    (each [_ e (ipairs [...])]
      (let [elt (if (list? e) e (list e))]
        (table.insert elt 2 x)
        (set x elt)))
    x)
  
  (fn ->>* [val ...]
    "Thread-last macro.
  Same as ->, except splices the value into the last position of each form
  rather than the first."
    (var x val)
    (each [_ e (pairs [...])]
      (let [elt (if (list? e) e (list e))]
        (table.insert elt x)
        (set x elt)))
    x)
  
  (fn -?>* [val ...]
    "Nil-safe thread-first macro.
  Same as -> except will short-circuit with nil when it encounters a nil value."
    (if (= 0 (select "#" ...))
        val
        (let [els [...]
              e (table.remove els 1)
              el (if (list? e) e (list e))
              tmp (gensym)]
          (table.insert el 2 tmp)
          `(let [,tmp ,val]
             (if ,tmp
                 (-?> ,el ,(unpack els))
                 ,tmp)))))
  
  (fn -?>>* [val ...]
    "Nil-safe thread-last macro.
  Same as ->> except will short-circuit with nil when it encounters a nil value."
    (if (= 0 (select "#" ...))
        val
        (let [els [...]
              e (table.remove els 1)
              el (if (list? e) e (list e))
              tmp (gensym)]
          (table.insert el tmp)
          `(let [,tmp ,val]
             (if ,tmp
                 (-?>> ,el ,(unpack els))
                 ,tmp)))))
  
  (fn ?dot [tbl ...]
    "Nil-safe table look up.
  Same as . (dot), except will short-circuit with nil when it encounters
  a nil value in any of subsequent keys."
    (let [head (gensym :t)
          lookups `(do (var ,head ,tbl) ,head)]
      (each [_ k (ipairs [...])]
        ;; Kinda gnarly to reassign in place like this, but it emits the best lua.
        ;; With this impl, it emits a flat, concise, and readable set of if blocks.
        (table.insert lookups (# lookups) `(if (not= nil ,head)
                                             (set ,head (. ,head ,k)))))
      lookups))
  
  (fn doto* [val ...]
    "Evaluates val and splices it into the first argument of subsequent forms."
    (let [name (gensym)
          form `(let [,name ,val])]
      (each [_ elt (pairs [...])]
        (table.insert elt 2 name)
        (table.insert form elt))
      (table.insert form name)
      form))
  
  (fn when* [condition body1 ...]
    "Evaluate body for side-effects only when condition is truthy."
    (assert body1 "expected body")
    `(if ,condition
         (do
           ,body1
           ,...)))
  
  (fn with-open* [closable-bindings ...]
    "Like `let`, but invokes (v:close) on each binding after evaluating the body.
  The body is evaluated inside `xpcall` so that bound values will be closed upon
  encountering an error before propagating it."
    (let [bodyfn `(fn []
                    ,...)
          closer `(fn close-handlers# [ok# ...]
                    (if ok# ... (error ... 0)))
          traceback `(. (or package.loaded.fennel debug) :traceback)]
      (for [i 1 (length closable-bindings) 2]
        (assert (sym? (. closable-bindings i))
                "with-open only allows symbols in bindings")
        (table.insert closer 4 `(: ,(. closable-bindings i) :close)))
      `(let ,closable-bindings
         ,closer
         (close-handlers# (_G.xpcall ,bodyfn ,traceback)))))
  
  (fn into-val [iter-tbl]
    (var into nil)
    (for [i (length iter-tbl) 2 -1]
      (if (= :into (. iter-tbl i))
          (do (set into (table.remove iter-tbl (+ i 1)))
              (table.remove iter-tbl i))))
    (assert (or (not into) (table? into)) "expected table in :into clause")
    (or into []))
  
  (fn collect* [iter-tbl key-value-expr ...]
    "Returns a table made by running an iterator and evaluating an expression
  that returns key-value pairs to be inserted sequentially into the table.
  This can be thought of as a \"table comprehension\". The provided key-value
  expression must return either 2 values, or nil.
  
  For example,
    (collect [k v (pairs {:apple \"red\" :orange \"orange\"})]
      (values v k))
  returns
    {:red \"apple\" :orange \"orange\"}
  
  Supports an :into clause after the iterator to put results in an existing table.
  Supports early termination with an :until clause."
    (assert (and (sequence? iter-tbl) (>= (length iter-tbl) 2))
            "expected iterator binding table")
    (assert (not= nil key-value-expr) "expected key-value expression")
    (assert (= nil ...)
            "expected exactly one body expression. Wrap multiple expressions with do")
    `(let [tbl# ,(into-val iter-tbl)]
       (each ,iter-tbl
         (match ,key-value-expr
           (k# v#) (tset tbl# k# v#)))
       tbl#))
  
  (fn icollect* [iter-tbl value-expr ...]
    "Returns a sequential table made by running an iterator and evaluating an
  expression that returns values to be inserted sequentially into the table.
  This can be thought of as a \"list comprehension\".
  
  For example,
    (icollect [_ v (ipairs [1 2 3 4 5])] (when (> v 2) (* v v)))
  returns
    [9 16 25]
  
  Supports an :into clause after the iterator to put results in an existing table.
  Supports early termination with an :until clause."
    (assert (and (sequence? iter-tbl) (>= (length iter-tbl) 2))
            "expected iterator binding table")
    (assert (not= nil value-expr) "expected table value expression")
    (assert (= nil ...)
            "expected exactly one body expression. Wrap multiple expressions with do")
    `(let [tbl# ,(into-val iter-tbl)]
       (each ,iter-tbl
         (tset tbl# (+ (length tbl#) 1) ,value-expr))
       tbl#))
  
  (fn accumulate* [iter-tbl accum-expr ...]
    "Accumulation macro.
  It takes a binding table and an expression as its arguments.
  In the binding table, the first symbol is bound to the second value, being an
  initial accumulator variable. The rest are an iterator binding table in the
  format `each` takes.
  It runs through the iterator in each step of which the given expression is
  evaluated, and its returned value updates the accumulator variable.
  It eventually returns the final value of the accumulator variable.
  
  For example,
    (accumulate [total 0
                 _ n (pairs {:apple 2 :orange 3})]
      (+ total n))
  returns
    5"
    (assert (and (sequence? iter-tbl) (>= (length iter-tbl) 4))
            "expected initial value and iterator binding table")
    (assert (not= nil accum-expr) "expected accumulating expression")
    (assert (= nil ...)
            "expected exactly one body expression. Wrap multiple expressions with do")
    (let [accum-var (table.remove iter-tbl 1)
          accum-init (table.remove iter-tbl 1)]
      `(do (var ,accum-var ,accum-init)
           (each ,iter-tbl
             (set ,accum-var ,accum-expr))
           ,accum-var)))
  
  (fn partial* [f ...]
    "Returns a function with all arguments partially applied to f."
    (assert f "expected a function to partially apply")
    (let [bindings []
          args []]
      (each [_ arg (ipairs [...])]
        (if (or (= :number (type arg))
                (= :string (type arg))
                (= :boolean (type arg))
                (= `nil arg))
          (table.insert args arg)
          (let [name (gensym)]
            (table.insert bindings name)
            (table.insert bindings arg)
            (table.insert args name))))
      (let [body (list f (unpack args))]
        (table.insert body _VARARG)
        `(let ,bindings
           (fn [,_VARARG]
             ,body)))))
  
  (fn pick-args* [n f]
    "Creates a function of arity n that applies its arguments to f.
  
  For example,
    (pick-args 2 func)
  expands to
    (fn [_0_ _1_] (func _0_ _1_))"
    (if (and _G.io _G.io.stderr)
        (_G.io.stderr:write
         "-- WARNING: pick-args is deprecated and will be removed in the future.\n"))
    (assert (and (= (type n) :number) (= n (math.floor n)) (>= n 0))
            (.. "Expected n to be an integer literal >= 0, got " (tostring n)))
    (let [bindings []]
      (for [i 1 n]
        (tset bindings i (gensym)))
      `(fn ,bindings
         (,f ,(unpack bindings)))))
  
  (fn pick-values* [n ...]
    "Like the `values` special, but emits exactly n values.
  
  For example,
    (pick-values 2 ...)
  expands to
    (let [(_0_ _1_) ...]
      (values _0_ _1_))"
    (assert (and (= :number (type n)) (>= n 0) (= n (math.floor n)))
            (.. "Expected n to be an integer >= 0, got " (tostring n)))
    (let [let-syms (list)
          let-values (if (= 1 (select "#" ...)) ... `(values ,...))]
      (for [i 1 n]
        (table.insert let-syms (gensym)))
      (if (= n 0) `(values)
          `(let [,let-syms ,let-values]
             (values ,(unpack let-syms))))))
  
  (fn lambda* [...]
    "Function literal with nil-checked arguments.
  Like `fn`, but will throw an exception if a declared argument is passed in as
  nil, unless that argument's name begins with a question mark."
    (let [args [...]
          has-internal-name? (sym? (. args 1))
          arglist (if has-internal-name? (. args 2) (. args 1))
          docstring-position (if has-internal-name? 3 2)
          has-docstring? (and (> (length args) docstring-position)
                              (= :string (type (. args docstring-position))))
          arity-check-position (- 4 (if has-internal-name? 0 1)
                                  (if has-docstring? 0 1))
          empty-body? (< (length args) arity-check-position)]
      (fn check! [a]
        (if (table? a)
            (each [_ a (pairs a)]
              (check! a))
            (let [as (tostring a)]
              (and (not (as:match "^?")) (not= as "&") (not= as "_")
                   (not= as "...") (not= as "&as")))
            (table.insert args arity-check-position
                          `(_G.assert (not= nil ,a)
                                      ,(: "Missing argument %s on %s:%s" :format
                                          (tostring a)
                                          (or a.filename :unknown)
                                          (or a.line "?"))))))
  
      (assert (= :table (type arglist)) "expected arg list")
      (each [_ a (ipairs arglist)]
        (check! a))
      (if empty-body?
          (table.insert args (sym :nil)))
      `(fn ,(unpack args))))
  
  (fn macro* [name ...]
    "Define a single macro."
    (assert (sym? name) "expected symbol for macro name")
    (local args [...])
    `(macros {,(tostring name) (fn ,(unpack args))}))
  
  (fn macrodebug* [form return?]
    "Print the resulting form after performing macroexpansion.
  With a second argument, returns expanded form as a string instead of printing."
    (let [handle (if return? `do `print)]
      `(,handle ,(view (macroexpand form _SCOPE)))))
  
  (fn import-macros* [binding1 module-name1 ...]
    "Binds a table of macros from each macro module according to a binding form.
  Each binding form can be either a symbol or a k/v destructuring table.
  Example:
    (import-macros mymacros                 :my-macros    ; bind to symbol
                   {:macro1 alias : macro2} :proj.macros) ; import by name"
    (assert (and binding1 module-name1 (= 0 (% (select "#" ...) 2)))
            "expected even number of binding/modulename pairs")
    (for [i 1 (select "#" binding1 module-name1 ...) 2]
      (let [(binding modname) (select i binding1 module-name1 ...)
            ;; generate a subscope of current scope, use require-macros
            ;; to bring in macro module. after that, we just copy the
            ;; macros from subscope to scope.
            scope (get-scope)
            subscope (fennel.scope scope)]
        (_SPECIALS.require-macros `(require-macros ,modname) subscope {} ast)
        (if (sym? binding)
            ;; bind whole table of macros to table bound to symbol
            (tset scope.macros (. binding 1) (. macro-loaded modname))
            ;; 1-level table destructuring for importing individual macros
            (table? binding)
            (each [macro-name [import-key] (pairs binding)]
              (assert (= :function (type (. subscope.macros macro-name)))
                      (.. "macro " macro-name " not found in module "
                          (tostring modname)))
              (tset scope.macros import-key (. subscope.macros macro-name))))))
    nil)
  
  ;;; Pattern matching
  
  (fn match-values [vals pattern unifications match-pattern]
    (let [condition `(and)
          bindings []]
      (each [i pat (ipairs pattern)]
        (let [(subcondition subbindings) (match-pattern [(. vals i)] pat
                                                        unifications)]
          (table.insert condition subcondition)
          (each [_ b (ipairs subbindings)]
            (table.insert bindings b))))
      (values condition bindings)))
  
  (fn match-table [val pattern unifications match-pattern]
    (let [condition `(and (= (_G.type ,val) :table))
          bindings []]
      (each [k pat (pairs pattern)]
        (if (= pat `&)
            (do
              (assert (= nil (. pattern (+ k 2)))
                      "expected & rest argument before last parameter")
              (table.insert bindings (. pattern (+ k 1)))
              (table.insert bindings
                            [`(select ,k ((or table.unpack _G.unpack) ,val))]))
            (= k `&as)
            (do
              (table.insert bindings pat)
              (table.insert bindings val))
            (and (= :number (type k)) (= `&as pat))
            (do
              (assert (= nil (. pattern (+ k 2)))
                      "expected &as argument before last parameter")
              (table.insert bindings (. pattern (+ k 1)))
              (table.insert bindings val))
            ;; don't process the pattern right after &/&as; already got it
            (or (not= :number (type k)) (and (not= `&as (. pattern (- k 1)))
                                             (not= `& (. pattern (- k 1)))))
            (let [subval `(. ,val ,k)
                  (subcondition subbindings) (match-pattern [subval] pat
                                                            unifications)]
              (table.insert condition subcondition)
              (each [_ b (ipairs subbindings)]
                (table.insert bindings b)))))
      (values condition bindings)))
  
  (fn match-pattern [vals pattern unifications]
    "Takes the AST of values and a single pattern and returns a condition
  to determine if it matches as well as a list of bindings to
  introduce for the duration of the body if it does match."
    ;; we have to assume we're matching against multiple values here until we
    ;; know we're either in a multi-valued clause (in which case we know the #
    ;; of vals) or we're not, in which case we only care about the first one.
    (let [[val] vals]
      (if (or (and (sym? pattern) ; unification with outer locals (or nil)
                   (not= "_" (tostring pattern)) ; never unify _
                   (or (in-scope? pattern) (= :nil (tostring pattern))))
              (and (multi-sym? pattern) (in-scope? (. (multi-sym? pattern) 1))))
          (values `(= ,val ,pattern) [])
          ;; unify a local we've seen already
          (and (sym? pattern) (. unifications (tostring pattern)))
          (values `(= ,(. unifications (tostring pattern)) ,val) [])
          ;; bind a fresh local
          (sym? pattern)
          (let [wildcard? (: (tostring pattern) :find "^_")]
            (if (not wildcard?) (tset unifications (tostring pattern) val))
            (values (if (or wildcard? (string.find (tostring pattern) "^?")) true
                        `(not= ,(sym :nil) ,val)) [pattern val]))
          ;; guard clause
          (and (list? pattern) (= (. pattern 2) `?))
          (let [(pcondition bindings) (match-pattern vals (. pattern 1)
                                                     unifications)
                condition `(and ,(unpack pattern 3))]
            (values `(and ,pcondition
                          (let ,bindings
                            ,condition)) bindings))
          ;; multi-valued patterns (represented as lists)
          (list? pattern)
          (match-values vals pattern unifications match-pattern)
          ;; table patterns
          (= (type pattern) :table)
          (match-table val pattern unifications match-pattern)
          ;; literal value
          (values `(= ,val ,pattern) []))))
  
  (fn match-condition [vals clauses]
    "Construct the actual `if` AST for the given match values and clauses."
    (if (not= 0 (% (length clauses) 2)) ; treat odd final clause as default
        (table.insert clauses (length clauses) (sym "_")))
    (let [out `(if)]
      (for [i 1 (length clauses) 2]
        (let [pattern (. clauses i)
              body (. clauses (+ i 1))
              (condition bindings) (match-pattern vals pattern {})]
          (table.insert out condition)
          (table.insert out `(let ,bindings
                               ,body))))
      out))
  
  (fn match-val-syms [clauses]
    "How many multi-valued clauses are there? return a list of that many gensyms."
    (let [syms (list (gensym))]
      (for [i 1 (length clauses) 2]
        (let [clause (if (and (list? (. clauses i)) (= `? (. clauses i 2)))
                         (. clauses i 1)
                         (. clauses i))]
          (if (list? clause)
              (each [valnum (ipairs clause)]
                (if (not (. syms valnum))
                    (tset syms valnum (gensym)))))))
      syms))
  
  (fn match* [val ...]
    ;; Old implementation of match macro, which doesn't directly support
    ;; `where' and `or'. New syntax is implemented in `match-where',
    ;; which simply generates old syntax and feeds it to `match*'.
    (let [clauses [...]
          vals (match-val-syms clauses)]
      (assert (= 0 (math.fmod (length clauses) 2))
              "expected even number of pattern/body pairs")
      ;; protect against multiple evaluation of the value, bind against as
      ;; many values as we ever match against in the clauses.
      (list `let [vals val] (match-condition vals clauses))))
  
  ;; Construction of old match syntax from new syntax
  
  (fn partition-2 [seq]
    ;; Partition `seq` by 2.
    ;; If `seq` has odd amount of elements, the last one is dropped.
    ;;
    ;; Input: [1 2 3 4 5]
    ;; Output: [[1 2] [3 4]]
    (let [firsts []
          seconds []
          res []]
      (for [i 1 (length seq) 2]
        (let [first (. seq i)
              second (. seq (+ i 1))]
          (table.insert firsts (if (not= nil first) first `nil))
          (table.insert seconds (if (not= nil second) second `nil))))
      (each [i v1 (ipairs firsts)]
        (let [v2 (. seconds i)]
          (if (not= nil v2)
              (table.insert res [v1 v2]))))
      res))
  
  (fn transform-or [[_ & pats] guards]
    ;; Transforms `(or pat pats*)` lists into match `guard` patterns.
    ;;
    ;; (or pat1 pat2), guard => [(pat1 ? guard) (pat2 ? guard)]
    (let [res []]
      (each [_ pat (ipairs pats)]
        (table.insert res (list pat `? (unpack guards))))
      res))
  
  (fn transform-cond [cond]
    ;; Transforms `where` cond into sequence of `match` guards.
    ;;
    ;; pat => [pat]
    ;; (where pat guard) => [(pat ? guard)]
    ;; (where (or pat1 pat2) guard) => [(pat1 ? guard) (pat2 ? guard)]
    (if (and (list? cond) (= (. cond 1) `where))
        (let [second (. cond 2)]
          (if (and (list? second) (= (. second 1) `or))
              (transform-or second [(unpack cond 3)])
              :else
              [(list second `? (unpack cond 3))]))
        :else
        [cond]))
  
  (fn match-where [val ...]
    "Perform pattern matching on val. See reference for details.
  
  Syntax:
  
  (match data-expression
    pattern body
    (where pattern guard guards*) body
    (where (or pattern patterns*) guard guards*) body)"
    (let [conds-bodies (partition-2 [...])
          else-branch (if (not= 0 (% (select "#" ...) 2))
                          (select (select "#" ...) ...))
          match-body []]
      (each [_ [cond body] (ipairs conds-bodies)]
        (each [_ cond (ipairs (transform-cond cond))]
          (table.insert match-body cond)
          (table.insert match-body body)))
      (if else-branch
          (table.insert match-body else-branch))
      (match* val (unpack match-body))))
  
  {:-> ->*
   :->> ->>*
   :-?> -?>*
   :-?>> -?>>*
   :?. ?dot
   :doto doto*
   :when when*
   :with-open with-open*
   :collect collect*
   :icollect icollect*
   :accumulate accumulate*
   :partial partial*
   :lambda lambda*
   :pick-args pick-args*
   :pick-values pick-values*
   :macro macro*
   :macrodebug macrodebug*
   :import-macros import-macros*
   :match match-where}
  ]===]
  local module_name = "fennel.macros"
  local _
  local function _567_()
    return mod
  end
  package.preload[module_name] = _567_
  _ = nil
  local env
  do
    local _568_ = specials["make-compiler-env"](nil, compiler.scopes.compiler, {})
    do end (_568_)["utils"] = utils
    _568_["fennel"] = mod
    env = _568_
  end
  local built_ins = eval(builtin_macros, {env = env, scope = compiler.scopes.compiler, allowedGlobals = false, useMetadata = true, filename = "src/fennel/macros.fnl", moduleName = module_name})
  for k, v in pairs(built_ins) do
    compiler.scopes.global.macros[k] = v
  end
  compiler.scopes.global.macros["\206\187"] = compiler.scopes.global.macros.lambda
  package.preload[module_name] = nil
end
return mod