From ac6f24671cce306251d12c9913e49a622be83981 Mon Sep 17 00:00:00 2001
From: Alexandre Aubin <alex.aubin@mailoo.org>
Date: Tue, 26 Feb 2019 00:59:31 +0100
Subject: [PATCH] In case no file in dir, still an empty string will be read,
 which matches [[:digit:]]* (but won't with +)

---
 data/helpers.d/package | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/data/helpers.d/package b/data/helpers.d/package
index 3924fc14e..000b0ee74 100644
--- a/data/helpers.d/package
+++ b/data/helpers.d/package
@@ -25,7 +25,7 @@ ynh_wait_dpkg_free() {
             while read dpkg_file <&9
             do
                 # Check if the name of this file contains only numbers.
-                if echo "$dpkg_file" | grep -Pq "^[[:digit:]]*$"
+                if echo "$dpkg_file" | grep -Pq "^[[:digit:]]+$"
                 then
                     # If so, that a remaining of dpkg.
                     ynh_print_err "E: dpkg was interrupted, you must manually run 'sudo dpkg --configure -a' to correct the problem."