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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 |
|---|---|
| 959 | |
| 960 | /** |
| 961 | * Filters the list of blocks that can be used as wrapper blocks, allowing |
| 962 | * excerpts to be generated from the `innerBlocks` of these wrappers. |
| 963 | * |
| 964 | * @since 5.8.0 |
| 965 | * |
| 966 | * @param string[] $allowed_wrapper_blocks The list of names of allowed wrapper blocks. |
| 967 | */ |
| 968 | $allowed_wrapper_blocks = apply_filters( 'excerpt_allowed_wrapper_blocks', $allowed_wrapper_blocks ); |
| 969 | |
| 970 | $allowed_blocks = array_merge( $allowed_inner_blocks, $allowed_wrapper_blocks ); |
| 971 | |
| 972 | /** |
| 973 | * Filters the list of blocks that can contribute to the excerpt. |
| 974 | * |
| 975 | * If a dynamic block is added to this list, it must not generate another |
| 976 | * excerpt, as this will cause an infinite loop to occur. |
| 977 | * |