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search_fwd ({patt}, [re], [case], [block], [full_len])

     Usage: Searches the current buffer forward from the current
            position for a pattern.

Parameters: Patt .string. is the search pattern.
            Re .int. is non-0 or omitted to use regular
            expressions, and 0 to use the pattern literally.
            If re is non-0, the type of regular expression
            matching is determined by the value:

             VALUE   MATCH DIRECTION             CLOSURE
             -----   ---------------             -------
              1      left to right               minimal
              2      direction of search         minimal
              3      right to left               minimal
             -1      left to right               maximal
             -2      direction of search         maximal
             -3      right to left               maximal

            Case .int. is 0 for case insensitive, non-0 for
            case sensitive, and omitted to use the current search_case
            value.  Block .int. is non-0 to confine the search to
            the currently marked block. Full_len .int. is updated to
            the full length of the pattern matched if it is passed in
            as non-0.  Otherwise, the return value gives length of
            match (based on cursor position after match, NOT the full
            pattern length)

   Returns: 0 if no match found, -1 if error, -2 if huge match
            (more than 65534 characters). Otherwise, the return value
            is the length of the matched text plus 1. Note that if
            there is a \c in the pattern, then the length returned is
            the distance from the cursor to the end of the pattern
            plus 1.