id,summary,reporter,owner,description,type,status,priority,milestone,component,version,severity,resolution,keywords,cc
17771,URL-encoded comment_author_url gets broken by MySQL varchar 200 length limit,tenpura,,"!WordPress sometimes pings back with long permalinks that exceed comment_author_url column length limit of 200, which  results in generating unusable broken links to the post. 
It easily reaches to the limit, especially if the permalink contains url-encoded multibyte title as postname. (e.g. 23 characters of UTF-8 Japanese become a 207 characters long url-encoded string. Incomplete url-encoded string may trigger 400 Bad Request too.)

'''Solution:'''
In pingback(), use shortlink instead of regular permalink if the URL is longer than 200 characters.
It seems to work ok with wp.me shortlinks.",defect (bug),new,normal,Awaiting Review,I18N,3.2,normal,,has-patch,