From 323e317104b4558046610f491e28510851f0d56d Mon Sep 17 00:00:00 2001
From: deadc0de6 <info@deadc0de.ch>
Date: Mon, 6 May 2019 22:05:41 +0200
Subject: [PATCH] avoid comparing symlink pointing to themselves (#133)

---
 dotdrop/dotdrop.py | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/dotdrop/dotdrop.py b/dotdrop/dotdrop.py
index c020188..a1b6a7e 100644
--- a/dotdrop/dotdrop.py
+++ b/dotdrop/dotdrop.py
@@ -191,6 +191,17 @@ def cmd_compare(o, tmp):
                 same = False
                 continue
             src = tmpsrc
+
+        # is a symlink pointing to itself
+        asrc = os.path.join(o.dotpath, os.path.expanduser(src))
+        adst = os.path.expanduser(dotfile.dst)
+        if os.path.samefile(asrc, adst):
+            if o.debug:
+                line = '=> compare {}: diffing with \"{}\"'
+                LOG.dbg(line.format(dotfile.key, dotfile.dst))
+                LOG.dbg('points to itself')
+            return True
+
         # install dotfile to temporary dir
         ret, insttmp = inst.install_to_temp(t, tmp, src, dotfile.dst)
         if not ret: