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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 |
|---|---|
| 2144 | */ |
| 2145 | $fields = apply_filters( 'comment_form_default_fields', $fields ); |
| 2146 | $defaults = array( |
| 2147 | 'fields' => $fields, |
| 2148 | 'comment_field' => '<p class="comment-form-comment"><label for="comment">' . _x( 'Comment', 'noun' ) . '</label> <textarea id="comment" name="comment" cols="45" rows="8" maxlength="65525" aria-required="true" required="required"></textarea></p>', |
| 2149 | /** This filter is documented in wp-includes/link-template.php */ |
| 2150 | 'must_log_in' => '<p class="must-log-in">' . sprintf( |
| 2151 | /* translators: %s: login URL */ |
| 2152 | __( 'You must be <a href="%s">logged in</a> to post a comment.' ), |
| 2153 | wp_login_url( apply_filters( 'the_permalink', get_permalink( $post_id ) ) ) |
| 2154 | ) . '</p>', |
| 2155 | /** This filter is documented in wp-includes/link-template.php */ |
| 2156 | 'logged_in_as' => '<p class="logged-in-as">' . sprintf( |
| 2157 | /* translators: 1: edit user link, 2: accessibility text, 3: user name, 4: logout URL */ |
| 2158 | __( '<a href="%1$s" aria-label="%2$s">Logged in as %3$s</a>. <a href="%4$s">Log out?</a>' ), |
| 2159 | get_edit_user_link(), |
| 2160 | /* translators: %s: user name */ |
| 2161 | esc_attr( sprintf( __( 'Logged in as %s. Edit your profile.' ), $user_identity ) ), |
| 2162 | $user_identity, |
| 2163 | wp_logout_url( apply_filters( 'the_permalink', get_permalink( $post_id ) ) ) |
| 2164 | ) . '</p>', |
| 2165 | 'comment_notes_before' => '<p class="comment-notes"><span id="email-notes">' . __( 'Your email address will not be published.' ) . '</span>'. ( $req ? $required_text : '' ) . '</p>', |
| 2166 | 'comment_notes_after' => '', |
| 2167 | 'id_form' => 'commentform', |
| 2168 | 'id_submit' => 'submit', |
| 2169 | 'class_form' => 'comment-form', |
| 2170 | 'class_submit' => 'submit', |
| 2171 | 'name_submit' => 'submit', |
| 2172 | 'title_reply' => __( 'Leave a Reply' ), |