Strict Permalinks does two things:
post_name
portion of the permalink to alphanumerics and hyphensLike me, you may have been under the impression that post slugs are already restricted to alphanumerics and hyphens. In the current WordPress 2.8.5, a title that includes certain kinds of punctuation (e.g., “smartquotes”) will result in URL-encoded characters in the post_name
field. Many browsers handle this oddity seamlessly, however this may cause difficulties when integrating with systems expecting a more limited URL syntax.
strict-permalinks
folder from the /wp-content/plugins/
directorystrict-permalinks
folder to the /wp-content/plugins/
directorypost_title
to post_name
conversion (i.e., the sanitize_title
filter) will be limited to a-z, 0-9 and hyphens (-).