Variable: warning-series
warning-series is a variable defined in warnings.el.gz.
Value
nil
Documentation
Non-nil means treat multiple display-warning calls as a series.
A marker indicates a position in the warnings buffer which is the start of the current series; it means that additional warnings in the same buffer should not move point. If t, the next warning begins a series (and stores a marker here). A symbol with a function definition is like t, except also call that function before the next warning.
Source Code
;; Defined in /usr/src/emacs/lisp/emacs-lisp/warnings.el.gz
;; The autoload cookie is so that programs can bind this variable
;; safely, testing the existing value, before they call one of the
;; warnings functions.
;;;###autoload
(defvar warning-series nil
"Non-nil means treat multiple `display-warning' calls as a series.
A marker indicates a position in the warnings buffer
which is the start of the current series; it means that
additional warnings in the same buffer should not move point.
If t, the next warning begins a series (and stores a marker here).
A symbol with a function definition is like t, except
also call that function before the next warning.")