From e991e535e44a7809c9150d32527ca6fa3d2baba3 Mon Sep 17 00:00:00 2001
From: Dustin Kirkland <kirkland@ubuntu.com>
Date: Tue, 11 Jun 2019 19:01:41 -0500
Subject: [PATCH] * usr/lib/byobu/disk_io:   - ensure some values are set to
 zero, if unreadable   - fixes a bug where disk_io causes the rest of the
 status line to fail

---
 debian/changelog      | 3 +++
 usr/lib/byobu/disk_io | 6 +++---
 2 files changed, 6 insertions(+), 3 deletions(-)

diff --git a/debian/changelog b/debian/changelog
index c3ff24c0..7b96ffe3 100644
--- a/debian/changelog
+++ b/debian/changelog
@@ -22,6 +22,9 @@ byobu (5.128) unreleased; urgency=medium
     - prefer iwconfig over iw for now, iw is not working for me
   * usr/share/byobu/profiles/tmux:
     - flatten some of our color configuration to match the new tmux format
+  * usr/lib/byobu/disk_io:
+    - ensure some values are set to zero, if unreadable
+    - fixes a bug where disk_io causes the rest of the status line to fail
 
   [ Fede Luzzi ]
   * usr/lib/byobu/include/mondrian, usr/share/byobu/profiles/tmux:
diff --git a/usr/lib/byobu/disk_io b/usr/lib/byobu/disk_io
index 44db71ad..c6c6e02e 100755
--- a/usr/lib/byobu/disk_io
+++ b/usr/lib/byobu/disk_io
@@ -62,15 +62,15 @@ __disk_io() {
 		if [ $t2 -le $t1 ]; then
 			rate=0
 		else
-			[ -r "$cache" ] && read x1 < "$cache"
+			[ -r "$cache" ] && read x1 < "$cache" || x1=0
 			local a1= a2= a3= a4= a5= a6= a7= a8= a9= a10=
 			read a1 a2 a3 a4 a5 a6 a7 a8 a9 a10 other < "/sys/block/$disk/stat"
 			if [ "$i" = "read" ]; then
 				symbol="$ICON_RD"
-				x2="$a3"
+				[ -n "$a3" ] && x2="$a3" || x2=0
 			else
 				symbol="$ICON_WR"
-				x2="$a7"
+				[ -n "$a7" ] && x2="$a7" || x2=0
 			fi
 			printf "%s" "$x2" > "$cache"
 			rate=$((($x2 - $x1) / ($t2 - $t1) * 512 / 1024))