How to truncating url at the word instead of limit Background info:
By default, Pathauto has a maximum alias length is 100.    

Request: It would be nice if this could truncate at the last space before the limit, instead of truncating directly at the limit, so that there are no partial words in the URL.

What is the easiest way to do this Drupal?
The pathauto module uses the core function truncate_utf8() to truncate the alias. This call by pathauto uses $wordsafe=TRUE in the call to preserve word boundaries.

If you are seeing partial words in the path, this is a core issue for truncate_utf8, not a pathauto issue.