using System;
using System.Text.RegularExpressions;
public class Example
{
public static void Main()
{
string pattern = @"(?=(?:(?:\\x1b\[[0-9;]+m)?.){80})(?:(?:\\x1b\[[0-9;]+m)?.){0,80}\K ";
string substitution = @"\n";
string input = @"Morbi leo risus, \x1b[34;1mporta ac consectetur\x1b[39;22m ac, vestibulum at eros. Aenean lacinia bibendum nulla sed consectetur. Nullam id dolor id nibh ultricies vehicula ut id elit. Aenean lacinia bibendum nulla sed consectetur. Curabitur blandit tempus porttitor.";
RegexOptions options = RegexOptions.CultureInvariant;
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