I have a number of XML files containing sanskrit texts to be converted to tex. Latex has a maximum of 63 characters per word for its hyphenation to work, everything longer than that will not be hyphenated. Now I would like to grep my files for these words, only that grep doesn't appear to be the right tool here. Some of the words use IAST encoding, others Devangar.  I suppose a perl one-liner could do that? 
Perl one liner to find words longer than 63 characters
grep;regular expression;perl;latex