Adding allowed HTML tags for WP comments30 Oct 2004
I couldn’t find any easy answer to this question myself when I setup custom tags for commenting on this site a while back, and Indranil is trying to figure it out as well, so I figured I’d share a brief “how to” on the subject.
The default WordPress commenting tags allowed are
strong. For myself, and Indranil (and probably many other WordPress users), there is a desire to allow users more freedom in their commenting formatting: specifically, to allow the use of lists and list items.
Whilst this used to be possible with the (deprecated)
my-hacks.php file, this is advised against as the “hacks” system has changed, and chances are that file will be gone in a few releases time. The easiest way to add permitted tags is to edit the file which does the processing,
kses.php. Kses is described in the file header as being a “HTML/XHTML filter that only allows some elements and attributes” — and that’s what it does.
If you open this file, located in the wp-includes directory within your WordPress installation (full path to file should be
/wp-includes/kses.php), and scroll down a little way, you should see a variable
$allowedtags, with an array. (For me, it begins on line 17 of the file: yours may vary.)
By following the format tags are already listed there in, you can probably figure out how it works: for many, it’s just a matter of uncommenting the appropriate tags. I can’t recall if there are options for list tags in there already, I’m sorry: if you see lines which begin with
//'li' => array(), or
//'ol' => array(), or
//'ul' => array(),
then simply delete the preceding slashes (
//). Save the file, and commenting with these tags is now permitted.
If the file didn’t include those commented out lines, then simply add
'li' => array(),<br />
'ol' => array(),<br />
'ul' => array(),
to the array, and save.
There you have it! Of course, it’s possible to permit attributes and the like — take a look at the anchor (
a) part of the array for an example of that — but for lists, that’s mostly uneccessary (so far as I’ve seen, anyway).