preg_quote() 的 Ruby 等价物是什么? [英] What is the Ruby equivalent of preg_quote()?

问题描述

在 PHP 中，您需要使用 preg_quote() 来转义字符串中在正则表达式中具有特定含义的所有字符，以允许(例如)preg_match() 来搜索那些特殊字符.

In PHP you need to use preg_quote() to escape all the characters in a string that have a particular meaning in a regular expression, to allow (for example) preg_match() to search for those special characters.

以下代码在 Ruby 中的等价物是什么?

What is the equivalent in Ruby of the following code?

// The content of this variable is obtained from user input, in example.
$search = "$var = 100";
if (preg_match('/' . preg_quote($search, '/') . ";/i")) {
  // …
}

推荐答案

你想要Regexp.escape.

str = "[...]"
re = /#{Regexp.escape(str)}/
"la[...]la[...]la".gsub(re,"") #=> "lalala"

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