尝试使用 target.write 将 5 行减少到 1 时出现上述错误：
target.write("%s \n %s \n %s \n") % [line1, line2, line3]
# target.write("\n")
# target.write(line2)
# target.write("\n")
# target.write(line3)
# target.write("\n")
注释部分运行（当第一行是target.write(line1)，但这不是。
为什么第一行与写出注释掉的六行不同？这是整个脚本：
filename = ARGV.first
script = $0
puts "We're going to erase #{filename}."
puts "If you don't want that hit control C"
puts "If you do want that hit execute or return"
print "? "
STDIN.gets
puts "Opening the file..."
target = File.open(filename, 'w')
puts "Truncating the file. Goodbye!"
target.truncate(target.size)
puts "Now I'm going to ask you for three lines."
print "line1: "; line1 = STDIN.gets.chomp()
print "line2: "; line2 = STDIN.gets.chomp()
print "line3: "; line3 = STDIN.gets.chomp()
puts "I'm going to write these to the file."
target.write("%s \n %s \n %s \n") % [line1, line2, line3]
# target.write("\n")
# target.write(line2)
# target.write("\n")
# target.write(line3)
# target.write("\n")
puts "And finally we close it"
target.close()