From d313632b04e2277306af74738df0b4444bcad695 Mon Sep 17 00:00:00 2001
From: Hannes Reinecke <hare@suse.de>
Date: Thu, 15 Dec 2005 12:22:42 +0100
Subject: [PATCH] fold multiple consecutive whitespace chars into single '_'

---
 extras/scsi_id/scsi_id.c | 15 ++++++++++++---
 1 file changed, 12 insertions(+), 3 deletions(-)

diff --git a/extras/scsi_id/scsi_id.c b/extras/scsi_id/scsi_id.c
index 39391f6e2..aa1b16009 100644
--- a/extras/scsi_id/scsi_id.c
+++ b/extras/scsi_id/scsi_id.c
@@ -677,13 +677,22 @@ static int per_dev_options(struct sysfs_device *scsi_dev, int *good_bad,
  */
 static void format_serial(char *serial)
 {
-	char *p = serial;
+	char *p = serial, *q;
 
+	q = p;
 	while (*p != '\0') {
-		if (isspace(*p))
-			*p = '_';
+		if (isspace(*p)) {
+			if (q > serial && q[-1] != '_') {
+				*q = '_';
+				q++;
+			}
+		} else {
+			*q = *p;
+			q++;
+		}
 		p++;
 	}
+	*q = '\0';
 }
 
 /*
-- 
2.30.2