using System;
using System.Text.RegularExpressions;
public class Example
{
public static void Main()
{
string pattern = @"\h*\R(?=[a-z])(?!or$)";
string substitution = @" ";
string input = @"Books are an effective way to
communicate across time, both from the past and into the future.
Chapter 3
The Importance of Reading
or
Literature is the most agreeable way of ignoring life
";
RegexOptions options = RegexOptions.Multiline;
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