Word matching regards string as a sequence of words, disregarding punctuation that separates them. It searches the buffer for the same sequence of words. The match found must not extend after that position. If noerror is t , then it returns nil instead of signaling an error. If repeat is non- nil , then the search is repeated that many times.
Point is positioned at the end of the last match.
This function searches backward from point for a word match to string .