get_post_permalink incorrect documentation and variable name

[filosofo]

Says an argument is an ID when it could be either an ID or an object.

#14294

Makes sense we should ensure the filter always returns an ID, I think. Or maybe always a post object. Not sure which is more expected.

Should always be a post object, so we can use the same callbacks we have on post_link.

That's how I discovered this issue: I was about to create a new callback to handle filtering a custom object type with post_type_link instead of post_link (as the plugin had prior to 3.0), but then I discovered in fact I could just use the existing callback and attach it to post_type_link.

make_argument_actually_integer_but_keep_filter.14299.diff is probably a better approach: it keeps the stated argument value for get_post_permalink as an integer and consistently uses it as such, but explicitly passes the post object to the filter.

I like the latest approach.

(In [15411]) get_post_permalink() should take a post ID and pass the post object to the filter. Note that the filter received a post object previously as the variable. props filosofo, fixes #14299 for trunk.

(In [15412]) get_post_permalink() should take a post ID and pass the post object to the filter. Note that the filter received a post object previously as the variable. props filosofo, fixes #14299 for 3.0.