From 32a5f60bfe859e9d09013fd9809f183a393f676a Mon Sep 17 00:00:00 2001
From: Erich Eckner <git@eckner.net>
Date: Wed, 27 Jun 2018 20:31:44 +0200
Subject: bin/copy-to-build-support: exit normally on no-matches

---
 bin/copy-to-build-support | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/bin/copy-to-build-support b/bin/copy-to-build-support
index 8625d21..8388675 100755
--- a/bin/copy-to-build-support
+++ b/bin/copy-to-build-support
@@ -144,6 +144,14 @@ sed -n '
       "${tmp_dir}/mysql-command"
   done
 
+if [ ! -s "${tmp_dir}/repo-archs" ]; then
+  >&2 echo 'Nothing to do.'
+  if [ -w "$1" ]; then
+    printf '' > "$1"
+  fi
+  exit 0
+fi
+
 sort -u "${tmp_dir}/repo-archs" | \
   sponge "${tmp_dir}/repo-archs"
 
-- 
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