From 4cf70435b27fbe16a539e4d39ae0c745941f4d1c Mon Sep 17 00:00:00 2001
From: Thien-Thi Nguyen <ttn@gnuvola.org>
Date: Thu, 30 Jun 2022 03:34:54 -0400
Subject: [PATCH] fix portability bug: make sure destination file is writeable

Some shells let this go w/o comment, some don't.
Better to be sure.

(ensure): If "$dst" exists, make sure it is writeable.
---
 contrib/gana-update.sh | 1 +
 1 file changed, 1 insertion(+)

diff --git a/contrib/gana-update.sh b/contrib/gana-update.sh
index e16c67413..b20bbaa1d 100755
--- a/contrib/gana-update.sh
+++ b/contrib/gana-update.sh
@@ -22,6 +22,7 @@ ensure ()
 
     if ! diff $src $dst > /dev/null
     then
+        test ! -f $dst || chmod +w $dst
         cp $src $dst
         chmod -w $dst
     fi