Regular expression syntax

Media Center's expression language regex() function employs regular expressions (regexs).

Media Center 19

The regex syntax is the Perl Regular Expression Syntax, documented here.

(The regex implementation is from the Boost C++ library, version 1.54.)

Media Center 18 and earlier

The regex implementation has been reported to be the Microsoft 2010 TR1 engine. This is presumed to be a reference to the Microsoft Visual Studio 2010 Standard C++ Library TR1 engine. Programmers' documentation is here.

The TR1 implementation is reported to be based on the Boost library here.

It is supposed that Media Center versions before 2010 used the Standard C++ Library TR1 engine from earlier versions of Visual Studio. Failure of compatibility between different version of this engine have been reported, e.g. here.