From a98e0b8479ba670fae601401f9fe1ac86369d619 Mon Sep 17 00:00:00 2001
From: Andrew Cady <d@jerkface.net>
Date: Mon, 26 Jun 2023 09:14:42 -0400
Subject: double-check guid validity

---
 src/partvi | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/partvi b/src/partvi
index 849a300..a993703 100755
--- a/src/partvi
+++ b/src/partvi
@@ -151,6 +151,7 @@ set_var()
 format_guid()
 {
     set -- "$(tr -dc 0-9a-fA-F <<< "$1")"
+    [ ${#1} = 32 ]
     printf '%s\n' "${1:0:8}-${1:8:4}-${1:12:4}-${1:16:4}-${1:20:12}"
 }
 
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