Take the 2-minute tour ×  I am not here to discuss the
efficiency of using categories as the base for permalinks.  I
would like to know in what file and what line is the code to how
Wordpress picks out a category for the permalink if the post is
in multiple categories. I asked this on IRC a while ago and I
can't find the code anymore.   share|improve this question add
comment  1 Answer  up vote 0 down vote accepted  get_permalink
in /wp-includes/link-template.php, line 80  share|improve this
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