Variable: grep-last-buffer
grep-last-buffer is a variable defined in grep.el.gz.
Value
nil
Documentation
The most recent grep buffer.
A grep buffer becomes most recent when you select Grep mode in it.
Notice that using C-x ` (next-error) or M-x compile-goto-error (compile-goto-error) modifies
compilation-last-buffer rather than grep-last-buffer.
Source Code
;; Defined in /usr/src/emacs/lisp/progmodes/grep.el.gz
;; override compilation-last-buffer
(defvar grep-last-buffer nil
"The most recent grep buffer.
A grep buffer becomes most recent when you select Grep mode in it.
Notice that using \\[next-error] or \\[compile-goto-error] modifies
`compilation-last-buffer' rather than `grep-last-buffer'.")