After bulk comment actions, spaces in a search are removed

[markjaquith]

search for "foo bar" or some other two word term in your comments.

Perform a bulk spam.

On redirect, the space between "foo" and "bar" will be missing.

Confirmed. Really strange.

edit-comments.php handles redirection after a bulk action unlike the other pages. Instead of using wp_get_referer(), remove the query args it needs to, and adds the query args it needs to, it uses a base of "edit-comments.php" then adds on everything, including existing contextual query args such as the search query.

Patch follows the lead set by other pages. Alternatively, we can simply urlencode() $_REQUESTs? on what is currently line 106.

Alternative: Just urlencode() it and move along.

This also exists in 2.8.

I would prefer to fix it the full way but this will have to wait for 3.0 as it is not a regression.

(In [12461]) Ensure that bulk comment actions do not remove spaces from search terms.
Also refactors comment bulk action redirect url building to be consistent with other operations.
Fixes #11471 props nacin.