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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 |
|---|---|
| 1366 | elseif ( $last_name ) |
| 1367 | $display_name = $last_name; |
| 1368 | else |
| 1369 | $display_name = $user_login; |
| 1370 | } |
| 1371 | $display_name = apply_filters( 'pre_user_display_name', $display_name ); |
| 1372 | |
| 1373 | if ( empty($description) ) |
| 1374 | $description = ''; |
| 1375 | $description = apply_filters('pre_user_description', $description); |
| 1376 | |
| 1377 | if ( empty($rich_editing) ) |
| 1378 | $rich_editing = 'true'; |
| 1379 | |
| 1380 | if ( empty($comment_shortcuts) ) |
| 1381 | $comment_shortcuts = 'false'; |
| 1382 | |
| 1383 | if ( empty($admin_color) ) |
| 1384 | $admin_color = 'fresh'; |