I know there are plugins that do this, but since my needs are so small, I'm hoping there's another solution...

I want to edit the <hr /> style in the WordPress editor to have clear: both;. Is there a way to do this in the functions.php or something?

  • 1
    This sort of thing is best done with CSS. Just add the necessary CSS rule to the style.css in your theme folder (/wp-content/themes/theme-name/). – montrealist Jun 3 '13 at 19:36
  • That doesn't seem to work. – JacobTheDev Jun 3 '13 at 21:17

@dalbeab already answered your question, but thought I would point out a way to add horizontal rule to your editor if you wish.

Within functions.php, you can add this:

// add horizontal rule button
function enable_more_buttons($buttons) {
    $buttons[] = 'hr';
    return $buttons;
add_filter('mce_buttons', 'enable_more_buttons');

Then you will have a TinyMCE button that looks like this which will let you add an <hr /> with only 1 click:

enter image description here

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