Variable: replace-search-function
replace-search-function is a variable defined in replace.el.gz.
Value
nil
Documentation
Function to use when searching for strings to replace.
It is used by query-replace and replace-string, and is called
with three arguments, as if it were search-forward.
Probably introduced at or before Emacs version 23.1.
Source Code
;; Defined in /usr/src/emacs/lisp/replace.el.gz
(defvar replace-search-function nil
"Function to use when searching for strings to replace.
It is used by `query-replace' and `replace-string', and is called
with three arguments, as if it were `search-forward'.")