From 10b57ec7592972da01d1251079b5160eec089dfd Mon Sep 17 00:00:00 2001
From: Emeric Verschuur <emeric@mbedsys.org>
Date: Sat, 30 Jun 2018 14:13:05 +0200
Subject: [PATCH] Improve join_by to support multi character separator

---
 bashopts.sh | 9 ++++++---
 1 file changed, 6 insertions(+), 3 deletions(-)

diff --git a/bashopts.sh b/bashopts.sh
index e104612..d8891ed 100644
--- a/bashopts.sh
+++ b/bashopts.sh
@@ -387,9 +387,12 @@ bashopts_math_min() {
 
 # join array element
 bashopts_join_by() {
-    local IFS="$1"
-    shift || bashopts_log C "Usage: bashopts_join_by <character> [elt1 [elt2...]]"
-    echo "$*"
+    local sep="$1"
+    shift || bashopts_log C "Usage: bashopts_join_by <separator> [elt1 [elt2...]]"
+    printf "%s" "$1"
+    test $# -gt 1 || return 0
+    shift
+    printf "$sep%s" "$@"
 }
 
 # dump an option value by its name
-- 
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