Save buffers before running grep commands

* lisp/progmodes/grep.el (grep-ask-about-save): New variable (bug#96).
(grep, lgrep, rgrep): Use it (bug#96).

* doc/emacs/building.texi (Grep Searching): Document
`grep-save-buffers'.

* lisp/progmodes/grep.el (grep-save-buffers): Rename from
`grep-ask-about-save'.
(grep--save-buffers): New function.
(grep, lgrep, rgrep): Use it.

1 files changed, 4 insertions, 0 deletions

diff --git a/etc/NEWS b/etc/NEWS
index 12b98fa989d..8c4fb63fbd4 100644
--- a/etc/NEWS
+++ b/etc/NEWS
@@ -1676,6 +1676,10 @@ behavior, set `diff-switches' to `-c'.
 dynamically.  Any third-party code that changes these templates should
 be updated accordingly.
 
+** The grep/rgrep/lgrep functions will now ask about saving files
+before running.  This is controlled by the `grep-save-buffers'
+variable.
+
 +++
 ** ‘(/ N)’ is now equivalent to ‘(/ 1 N)’ rather than to ‘(/ N 1)’.
 The new behavior is compatible with Common Lisp and with XEmacs.