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The best way to understand what a hook does is to look at where it occurs in the source code.
do_action( "hook_name" )apply_filters( "hook_name", "what_to_filter" ).Remember, this hook may occur in more than one file. Moreover, the hook's context may change from version to version.
This hook occurs 2 times in this file.
| Line | Code |
|---|---|
| 2218 | * be applied to an empty string. |
| 2219 | * |
| 2220 | * @since 2.0.0 |
| 2221 | * |
| 2222 | * @param string $text The text to be formatted. |
| 2223 | * @return string The formatted text after filter is applied. |
| 2224 | */ |
| 2225 | function wp_richedit_pre($text) { |
| 2226 | // Filtering a blank results in an annoying <br />\n |
| 2227 | if ( empty($text) ) return apply_filters('richedit_pre', ''); |
| 2228 | |
| 2229 | $output = convert_chars($text); |
| 2230 | $output = wpautop($output); |
| 2231 | $output = htmlspecialchars($output, ENT_NOQUOTES); |
| 2232 | |
| 2233 | return apply_filters('richedit_pre', $output); |
| 2234 | } |
| 2235 | |
| 2236 | /** |
| 2237 | * Formats text for the HTML editor. |
| 2238 | * |
| 2239 | * Unless $output is empty it will pass through htmlspecialchars before the |
| 2240 | * 'htmledit_pre' filter is applied. |
| 2241 | * |
| 2242 | * @since 2.5.0 |