fix shell globbing in case of no matching files

pkg/de-p1st-repo/PKGBUILD

@@ -2,8 +2,8 @@
 _pkgname=repo
 _reponame=arch
 pkgname="de-p1st-$_pkgname"
-pkgver=0.1.4
-pkgrel=2
+pkgver=0.1.5
+pkgrel=1
 pkgdesc="Bash script to manage remote Arch Linux repository"
 arch=('any')
 url="https://codeberg.org/privacy1st/${_reponame}"

pkg/de-p1st-repo/arch-repo-push-new.sh

@@ -6,11 +6,29 @@ source /etc/de-p1st-repo/arch-repo.cfg || exit
 
 cd "${LOCAL_PKG_DIR}" || exit
 
-# get list of new packages, one package per line
+# check if at least one matching file exists
+match="0"
+for PKG in ./*.pkg.tar.{xz,zst}; do
+    [ -f "$PKG" ] || { echo "No match for pattern $PKG"; continue; }
+
+    # if we are here, then there is at least one match!
+    match="1"
+    break
+done
+
+if [ "$match" = "0" ]; then
+  echo "There are no local packages"
+  exit 0
+fi
+
+
+# Get list of new packages, one package per line.
+# Enable nullglob for the case that e.g. just *.zst but not *.xz packages exist.
+shopt -s nullglob
 rsync --ignore-existing --out-format="%n" --dry-run \
   ./*.pkg.tar.{xz,zst} "${REMOTE_SSH_HOST}":"${REMOTE_PKG_DIR}" > new-pkg.txt || exit
 
-# if there are no new packages, exit
+# if there are no new packages to push/synchronize, then exit
 if [ ! -s new-pkg.txt ]; then
   echo "No new packages.";
   exit 0;

pkg/de-p1st-repo/iterate-files-test.sh

@@ -0,0 +1,21 @@
+#!/bin/bash
+
+source /etc/de-p1st-repo/arch-repo.cfg || exit
+
+
+cd "${LOCAL_PKG_DIR}" || exit
+
+match="0"
+for PKG in ./*.pkg.tar.{xz,zst}; do
+    [ -f "$PKG" ] || { echo "No match for pattern $PKG"; continue; }
+
+    # if we are here, there is at least one match!
+    match="1"
+    break
+done
+
+if [ "$match" = "1" ]; then
+  shopt -s nullglob
+  # print all matching
+  echo ./*.pkg.tar.{xz,zst}
+fi