Quote:
Originally Posted by theducks
It took me a LONG time to get it.
Decoding:
Code:
^ must be at the beginning of the line
( start the [first] capture sequence
the dot any character
{x} Repetition rule 5 exactly 5 times, 2,5 would be 2 to 5 times,
) end of [first] capture
the replace:
\1 use the [first capture value]
IMHO dot is not a great match choice (for ISBN) as it assumes that the input is always a valid ISBN< to write a rule you need to know your data rules, and EXCEPTIONS  >
ISBN 10 can have an 'X' as the last ^(\d{9}(\d|X|x)) not tested
this supposed to say Match the first 9 digits from the start AND match the next if it is a digit OR x (either case) |
Tested, it takes the remaining part of the string:
1616084855IWIWEF -> IWIWEF