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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.
| Line | Code |
|---|---|
| 1350 | elseif ( $last_name ) |
| 1351 | $display_name = $last_name; |
| 1352 | else |
| 1353 | $display_name = $user_login; |
| 1354 | } |
| 1355 | $display_name = apply_filters( 'pre_user_display_name', $display_name ); |
| 1356 | |
| 1357 | if ( empty($description) ) |
| 1358 | $description = ''; |
| 1359 | $description = apply_filters('pre_user_description', $description); |
| 1360 | |
| 1361 | if ( empty($rich_editing) ) |
| 1362 | $rich_editing = 'true'; |
| 1363 | |
| 1364 | if ( empty($comment_shortcuts) ) |
| 1365 | $comment_shortcuts = 'false'; |
| 1366 | |
| 1367 | if ( empty($admin_color) ) |
| 1368 | $admin_color = 'fresh'; |