fetchNamed
Retrieves the text matching the capturing parentheses named @name.
If @name is a valid sub pattern name but it didn't match anything (e.g. sub pattern "X", matching "b" against "(?P<X>a)?b") then an empty string is returned.
The string is fetched from the string passed to the match function, so you cannot call this function after freeing the string.
Return
The matched substring, or null if an error occurred. You have to free the string yourself
Since
2.14
Parameters
name
name of the subexpression