From e6a1c8c62a13fb08fe28c804528ffb8421673af3 Mon Sep 17 00:00:00 2001
From: Gardouille <gardouille@gmail.com>
Date: Wed, 11 Mar 2020 18:40:37 +0100
Subject: [PATCH] Avoid shortening an already shortened url

---
 url.shortme.sh | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/url.shortme.sh b/url.shortme.sh
index da30115..df501b1 100755
--- a/url.shortme.sh
+++ b/url.shortme.sh
@@ -52,6 +52,13 @@ fi
 
 [ "${debug}" -eq "0" ] && printf "${c_magentab}%-6b${c_reset}\n" "DEBUG − Get URL : URL to be shortened : ${url_to_short}"
 # ]]]
+# Ensure the URL wasn't already shortened [[[
+if printf -- '%s' "${url_to_short}" | grep -q -E -- "${null_service_url}"
+then
+	printf "${c_redb}%b${c_reset}\n" "Error : The url to be shortened (${url_to_short}) already seems to comes from the 0x0 service (${null_service_url})."
+	exit 1
+fi
+# ]]]
 
 # shorten URL
 result=$(curl -sF"shorten=${url_to_short}" "${null_service_url}")