From 3a0df1bd4b7b17b05a5b58a573787174c6038103 Mon Sep 17 00:00:00 2001
From: Jonathon Hall <jonathon.hall@puri.sm>
Date: Tue, 6 Aug 2024 12:43:20 -0400
Subject: [PATCH] change-time.sh: Fix input of 08 and 09

printf was interpreting these as invalid octal numbers, they're
decimal.

Signed-off-by: Jonathon Hall <jonathon.hall@puri.sm>
---
 initrd/bin/change-time.sh | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/initrd/bin/change-time.sh b/initrd/bin/change-time.sh
index 7f1de885..0fb505ce 100755
--- a/initrd/bin/change-time.sh
+++ b/initrd/bin/change-time.sh
@@ -25,8 +25,11 @@ get_date () {
         echo
     done
 
-    # Pad with zeroes to length of maximum value
-    value="$(printf "%0${#max}u" "$value")"
+    # Pad with zeroes to length of maximum value.
+    # The "$((10#$value))" is needed to handle 08 and 09 correctly, which printf
+    # would otherwise interpret as octal.  This effectively strips the leading
+    # zero by evaluating an arithmetic expression with the base set to 10.
+    value="$(printf "%0${#max}u" "$((10#$value))")"
 }
 
 enter_time_and_change()