This should've been commited yesterday, before the funmap change.

 ok millert@

2 files changed, 57 insertions, 2 deletions

diff --git a/usr.bin/mg/def.h b/usr.bin/mg/def.h
index 603a3f77255..6f4734237bf 100644
--- a/usr.bin/mg/def.h
+++ b/usr.bin/mg/def.h
@@ -1,4 +1,4 @@
-/*	$OpenBSD: def.h,v 1.37 2002/03/16 04:17:36 vincent Exp $	*/
+/*	$OpenBSD: def.h,v 1.38 2002/03/16 20:29:21 vincent Exp $	*/
 
 #include <sys/queue.h>
 
@@ -578,6 +578,7 @@ int	 cntnonmatchlines(int, int);
 /* undo.c X */
 void	 free_undo_record(struct undo_rec *);
 int	 undo_init(void);
+int	 undo_dump(void);
 int	 undo_enable(int);
 int	 undo_add_custom(int, LINE *, int, void *, int);
 int	 undo_add_boundary(void);
diff --git a/usr.bin/mg/undo.c b/usr.bin/mg/undo.c
index 5bfecff4e89..9e98d8dae92 100644
--- a/usr.bin/mg/undo.c
+++ b/usr.bin/mg/undo.c
@@ -1,4 +1,4 @@
-/* $OpenBSD: undo.c,v 1.7 2002/02/26 00:45:45 vincent Exp $ */
+/* $OpenBSD: undo.c,v 1.8 2002/03/16 20:29:21 vincent Exp $ */
 /*
  * Copyright (c) 2002 Vincent Labrecque <vincent@openbsd.org>
  *							 All rights reserved.
@@ -377,6 +377,60 @@ undo_add_change(LINE *lp, int offset, int size)
 	return TRUE;
 }
 
+/*
+ * Show the undo records for the current buffer in a new buffer.
+ */
+int
+undo_dump(void)
+{
+	struct undo_rec *rec;
+	BUFFER *bp;
+	MGWIN *wp;
+	char buf[4096], tmp[1024];
+	int num;
+
+	/*
+	 * Prepare the buffer for insertion.
+	 */
+	if ((bp = bfind("*undo*", TRUE)) == NULL)
+		return FALSE;
+
+	bclear(bp);
+	popbuf(bp);
+
+	for (wp = wheadp; wp != NULL; wp = wp->w_wndp)
+		if (wp->w_bufp == bp) {
+			wp->w_dotp = bp->b_linep;
+			wp->w_doto = 0;
+		}
+
+	num = 0;
+	for (rec = LIST_FIRST(&curbp->b_undo); rec != NULL;
+	     rec = LIST_NEXT(rec, next)) {
+		num++;
+		snprintf(buf, sizeof buf,
+		    "Record %d =>\t %s at %d ", num,
+		    (rec->type == DELETE) ? "DELETE":
+		    (rec->type == INSERT) ? "INSERT":
+		    (rec->type == CHANGE) ? "CHANGE":
+		    (rec->type == BOUNDARY) ? "----" : "UNKNOWN",
+		    rec->pos);
+		if (rec->type == DELETE || rec->type == CHANGE) {
+
+			strlcat(buf, "\"", sizeof buf);
+			snprintf(tmp, sizeof tmp, "%.*s", rec->region.r_size,
+			    rec->content);
+			strlcat(buf, tmp, sizeof buf);
+			strlcat(buf, "\"", sizeof buf);
+		}
+		snprintf(tmp, sizeof buf, " [%d]", rec->region.r_size);
+		strlcat(buf, tmp, sizeof buf);
+
+		addlinef(bp, buf);
+	}
+	return TRUE;
+}
+
 int
 undo(int f, int n)
 {