using System;
using System.Text.RegularExpressions;
public class Example
{
public static void Main()
{
string pattern = @"\s+(?=(?:(?!%}|\{%).)*%\})";
string substitution = @" ";
string input = @"{% url '
someURL
' %}
{% extends ""layout.html"" %}
{% block title %}Page Not found{% endblock %}
{% block content %}
<p>This is not the page you were looking for.</p>
{% endblock content %}";
RegexOptions options = RegexOptions.Singleline;
Regex regex = new Regex(pattern, options);
string result = regex.Replace(input, substitution);
}
}
Please keep in mind that these code samples are automatically generated and are not guaranteed to work. If you find any syntax errors, feel free to submit a bug report. For a full regex reference for C#, please visit: https://msdn.microsoft.com/en-us/library/system.text.regularexpressions.regex(v=vs.110).aspx