Variable: next-error-move-function
next-error-move-function is a buffer-local variable defined in
simple.el.gz.
Documentation
Function to use to move to an error locus.
It takes two arguments, a buffer position in the error buffer
and a buffer position in the error locus buffer.
The buffer for the error locus should already be current.
nil means use goto-char using the second argument position.
Source Code
;; Defined in /usr/src/emacs/lisp/simple.el.gz
(defvar-local next-error-move-function nil
"Function to use to move to an error locus.
It takes two arguments, a buffer position in the error buffer
and a buffer position in the error locus buffer.
The buffer for the error locus should already be current.
nil means use `goto-char' using the second argument position.")