From f0ebb08cd4df636205bef9fa560c6986d0712399 Mon Sep 17 00:00:00 2001
From: William Melody <hi@williammelody.com>
Date: Sun, 7 Jun 2020 13:25:03 -0700
Subject: [PATCH] Use improved `_join()`.

---
 hosts | 20 +++++++++++---------
 1 file changed, 11 insertions(+), 9 deletions(-)

diff --git a/hosts b/hosts
index 55e119a..ec1e0b4 100755
--- a/hosts
+++ b/hosts
@@ -323,19 +323,21 @@ _contains() {
 # _join()
 #
 # Usage:
-#   _join <separator> <array>
+#   _join "," a b c
+#   _join "${an_array[@]}"
 #
-# Examples:
-#   _join , a "b c" d     => a,b c,d
-#   _join / var local tmp => var/local/tmp
-#   _join , "${FOO[@]}"   => a,b,c
+# Returns:
+#   The list or array of items joined into a string with elements divided by
+#   the optional separator if one is provided.
 #
-# More Information:
-#   http://stackoverflow.com/a/17841619
+# More information:
+#   https://stackoverflow.com/a/17841619
 _join() {
-  local IFS="${1}"
+  local _delimiter="${1}"
   shift
-  printf "%s\\n" "${*}"
+  printf "%s" "${1}"
+  shift
+  printf "%s" "${@/#/${_delimiter}}" | tr -d '[:space:]'
 }
 
 # _blank()