ruby - 如何输出转义字符？

Question

我如何通过

a = "blog.posts.[activity]-It's-raining"

到

blog.posts.\[activity\]-It\'s-raining.md

那是带有转义符号的a？一般来说，字符串a必须在控制台(linux)中读取

Answer 1

你可以使用Shellwords.escape:

require "shellwords"
a = "blog.posts.[activity]-It's-raining"
puts Shellwords.escape(a)

这导致:

$ ruby foo.rb
blog.posts.\[activity\]-It\'s-raining