From e27949702d25bbe0e9153cf3afea158104c0c383 Mon Sep 17 00:00:00 2001
From: Justin <cattyhouse@users.noreply.github.com>
Date: Sun, 26 Mar 2023 23:07:28 +0800
Subject: xdiff : make sure $DIR is valid

if user run `xdiff --help` , `--help` gets passed to find as an arg, it will cause infinite vimdiff instance coming out, has to kill xdiff's pid to stop it.
---
 xdiff | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/xdiff b/xdiff
index 626e2e5..b388c76 100755
--- a/xdiff
+++ b/xdiff
@@ -21,6 +21,11 @@ fi
 
 DIR=${1:-/etc}
 
+if ! [ -d "$DIR" ] ; then
+    echo "$DIR is not a valid directory" >&2
+    exit 1
+fi
+
 for newfile in $(find "$DIR" -name '*.new-*_*' | sort -V); do
 	$DIFF "$newfile" "${newfile%.new-*_*}"
 done
-- 
cgit 1.4.1