From f576a116fde40328e5c0967b90f476b5416acc9b Mon Sep 17 00:00:00 2001
From: Chris Down <chris@chrisdown.name>
Date: Sun, 29 Oct 2017 10:40:38 +0000
Subject: [PATCH] Don't attempt to write to sockets represented as files

Fixes #54.
---
 clipmenud | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/clipmenud b/clipmenud
index da26287..d43d806 100755
--- a/clipmenud
+++ b/clipmenud
@@ -14,7 +14,10 @@ lock_timeout=2
 
 xsel_log=/dev/null
 for file in /proc/self/fd/2 /dev/stderr; do
-    [[ -e "$file" ]] || continue
+    [[ -f "$file" ]] || continue
+    # In Linux, it's not possible to write to a socket represented by a file
+    # (for example, /dev/stderr or /proc/self/fd/2). See issue #54.
+    [[ -f "$(readlink "$file")" ]] || continue
     xsel_log="$file"
     break
 done