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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 |
|---|---|
| 2936 | * in a break tag and line feed. |
| 2937 | * |
| 2938 | * If a non-empty string is passed, the filter is evaluated on the wp_richedit_pre() |
| 2939 | * return after being formatted. |
| 2940 | * |
| 2941 | * @since 2.0.0 |
| 2942 | * |
| 2943 | * @param string $output Text for the rich text editor. |
| 2944 | */ |
| 2945 | return apply_filters( 'richedit_pre', '' ); |
| 2946 | } |
| 2947 | |
| 2948 | $output = convert_chars($text); |
| 2949 | $output = wpautop($output); |
| 2950 | $output = htmlspecialchars($output, ENT_NOQUOTES, get_option( 'blog_charset' ) ); |
| 2951 | |
| 2952 | /** This filter is documented in wp-includes/formatting.php */ |
| 2953 | return apply_filters( 'richedit_pre', $output ); |
| 2954 | } |
| 2955 | |
| 2956 | /** |
| 2957 | * Formats text for the HTML editor. |
| 2958 | * |
| 2959 | * Unless $output is empty it will pass through htmlspecialchars before the |
| 2960 | * 'htmledit_pre' filter is applied. |
| 2961 | * |
| 2962 | * @since 2.5.0 |