def initialize
@emacs_in = STDIN
@emacs_out = STDOUT
@call_level = 0
@last_error = nil
@el4r_is_debug = ENV["EL4R_DEBUG"]
@el4r_homedir = ENV["EL4R_HOME"] || File.expand_path("~/.el4r")
@elvar = ELVariables.new(self)
@el4r_rubyobj_stock = ELRubyObjectStock.new(self)
@el4r_garbage_elobj_ids = []
log = ENV["EL4R_LOG"]
@log = case log
when "stderr"; STDERR
when /^\|/; File.popen($~.post_match, "w")
else; File.open(log || "/tmp/el4r-#{`whoami`.chomp}.#{Process.pid}.log", "w")
end
@el_backtrace_reset_threshold = 1
@el_backtrace = []
end