Regex Tester & Validator

This PCRE regex is designed to extract the file paths of projects (such as .csproj) from a Visual Studio solution (.sln) file. It matches the specific structure of a .sln file's Project declaration, which includes a GUID, project name, and relative path. The \K operator is used to reset the match start, discarding the preceding context and capturing only the exact project file path. It is highly useful for build scripts or developer tools analyzing .NET solution structures.