search_index_clear($type = NULL, $sid = NULL, $langcode = NULL) Clears either a part of, or the entire search
search_form_search_block_form_alter(&$form, FormStateInterface $form_state) Implements
search_simplify($text, $langcode = NULL) Simplifies and preprocesses text for searching.
search_expand_cjk($matches) Splits CJK (Chinese, Japanese, Korean) text into tokens. The
_search_index_truncate(&$text) Helper function for array_walk in search_index_split.
_search_find_match_with_simplify($key, $text, $boundary, $langcode = NULL) Finds an appropriate keyword in
Enables site-wide keyword searching. File core/modules/search/search.module
search_index($type, $sid, $langcode, $text) Updates the full-text search index for a particular item.
search_help($route_name, RouteMatchInterface $route_match) Implements
search_excerpt($keys, $text, $langcode = NULL) Returns snippets from a piece of text, with search keywords
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