The class RegEx provides a high level simplified interface to the regular
expression library, this class only handles narrow character strings, and
regular expressions always follow the "normal" syntax - that is the
-same as the perl / ECMAScript synatx.
+same as the perl / ECMAScript syntax.
typedef bool (*GrepCallback)(const RegEx& expression);
typedef bool (*GrepFileCallback)(const char* file, const RegEx& expression);