From 72754114f4aee163c751fe44dab05eddf07456e7 Mon Sep 17 00:00:00 2001
From: Solderpunk <solderpunk@sdf.org>
Date: Tue, 18 Aug 2020 21:06:12 +0200
Subject: [PATCH] Error out if a URL attempts to redirect to itself.

---
 av98.py | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/av98.py b/av98.py
index 6036e7e..737edb5 100755
--- a/av98.py
+++ b/av98.py
@@ -416,7 +416,10 @@ Slow internet connection?  Use 'set timeout' to be more patient.""")
         # Redirects
         elif status.startswith("3"):
             new_gi = GeminiItem(gi.absolutise_url(meta))
-            if new_gi.url in self.previous_redirectors:
+            if new_gi.url == gi.url:
+                print("Error: URL redirects to itself!")
+                return
+            elif new_gi.url in self.previous_redirectors:
                 print("Error: caught in redirect loop!")
                 return
             elif len(self.previous_redirectors) == _MAX_REDIRECTS: