996bbeb4af
- fixed some -w dirty internals - there was an error in test.pl that failed to identify a bug. the constructor was always setting $obj->is_valid to BAD_CHECKSUM. - fixed -w dirty line in is_valid_checksum - fixed problem parsing ISBNs without valid country codes which would cause an infinite loop. - added symbolic constants to replace magic return values. - fixed is_valid_checksum which would issue warnings if the string was less than ten characters - added a test.pl which still needs more tests to reach all of the code. - version 1.5 fixed some bugs with checksums - version 1.51 has a few minor doc fixes |
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