using System;
using System.Text.RegularExpressions;
public class Example
{
public static void Main()
{
string pattern = @" \$\K\s*((?:[^<$\s]+|(?!\s+[<$])\s+)*)\s*(?=(?:<(*ACCEPT)|\$|$)(*SKIP)(*F))
|(?!^)<\K\s*((?:[^<$\s]+|(?!\s+[<$])\s+)*)\s*(\$?)
|[^$]+(*SKIP)(*F)";
string substitution = @" \1\2 \3";
string input = @"random < test
nope $ foo $ bar < a $ qux < biz$fx<hk$
$foo<bar<baz$ foo buh<bar<baz$
$ foo $ a < z $ a <b <z$
";
RegexOptions options = RegexOptions.IgnorePatternWhitespace;
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