Function Replace-Aux

Part of:

package cl-ppcre
( replace-aux < target-string > < replacement > < pos-list > < reg-list > < start > < end > < preserve-case > < simple-calls > < element-type > )

Auxiliary function used by REGEX-REPLACE and
REGEX-REPLACE-ALL. POS-LIST contains a list with the start and end
positions of all matches while REG-LIST contains a list of arrays
representing the corresponding register start and end positions.