Regular Expressions: Markdown to HTML anchors

breakdown.js

/  \[([^\]]+)\]\(([^\)]+)\)  /

\[([^\]]+)\]
   \[    Look for a literal left bracket, by escaping it
   (     Start a capture group to retrieve the contents
  [^\]]+ Repeatedly find a character that isn't a closing bracket
   )     Close the capture group
   \]    Look for a literal right bracket, by escaping it

\(([^\)]+)\)
   \(    Look for a literal left parenthesis, by escaping it
   (     Start a capture group to retrieve the contents
  [^\)]+ Repeatedly find something that isn't a right parenthesis
   )     Close the capture group
   \)    Look for a literal right parenthesis, by escaping it

example.cs

using System;
using System.Text.RegularExpressions;
					
public class Program
{
	public static void Main()
	{
		string input = "[I'm an inline-style link](https://www.google.com)";
		
		string replacement = Regex.Replace(input, @"\[([^\]]+)\]\(([^\)]+)\)", m => string.Format(
			"<a href=\"{1}\">{0}</a>",
			m.Groups[1].Value,
			m.Groups[2].Value
		));
		
		Console.WriteLine(replacement);
	}
}

example.js

var markdown = "[I'm an inline-style link](https://www.google.com)";
var html = markdown.replace(/\[([^\]]+)\]\(([^\)]+)\)/, '<a href="$2">$1</a>');

alert(html);

example.php

<?PHP

$markdown = "[I'm an inline-style link](https://www.google.com)";
$html = preg_replace('/\[([^\]]+)\]\(([^\)]+)\)/', '<a href="\2">\1</a>', $markdown);

echo $html;

expression.js

/\[([^\]]+)\]\(([^\)]+)\)/