Ruby

[" ", nil].each do |append_character|

Readline.completion_append_character = append_character

stdin = Tempfile.new("test_readline_stdin")

stdout = Tempfile.new("test_readline_stdout")

begin

actual_text = nil

actual_line_buffer = nil

actual_point = nil

Readline.completion_proc = proc { |text|

actual_text = text

actual_point = Readline.point

actual_line_buffer = Readline.line_buffer

stdin.write("%sfinish\n" % (" " unless append_character))

stdin.close

stdout.close

["complete"]

}

stdin.write("first second\t")

stdin.flush

replace_stdio(stdin.path, stdout.path) {

Readline.readline("> ", false)

}

assert_equal("first second", actual_line_buffer)

assert_equal(12, actual_point)

assert_equal("first complete finish", Readline.line_buffer)

assert_equal(Encoding.find("locale"), Readline.line_buffer.encoding)

assert_equal(true, Readline.line_buffer.tainted?)

assert_equal(21, Readline.point)

ensure

stdin.close(true)

stdout.close(true)

end