While testing the xmlFARegExec function if I give the following input
(0|1|2|3|4|5|6|7|8|9) (0,10) (The rule to be used for matching the input _expression_)
_expression_ to be matched 1234567891 (length 10)
This is returning a failure, if I reduce the _expression_ by 1 it works fine. Is this because of incorrect usage?