From 99110ce8d30e1732cd706452261c67a1216b7287 Mon Sep 17 00:00:00 2001
From: James Hegedus <jthegedus@jttech.io>
Date: Tue, 6 Mar 2018 21:37:44 +1100
Subject: [PATCH] add or move asdf to front of PATH

---
 asdf.sh | 13 +++++++++++--
 1 file changed, 11 insertions(+), 2 deletions(-)

diff --git a/asdf.sh b/asdf.sh
index 0a70f3f0..f16b43cd 100644
--- a/asdf.sh
+++ b/asdf.sh
@@ -9,8 +9,17 @@ fi
 export ASDF_DIR
 ASDF_DIR="$(cd "$(dirname "$current_script_path")" &> /dev/null || exit 1; pwd)"
 
-[[ ":$PATH:" != *":${ASDF_DIR}/bin:"* ]] && PATH="${ASDF_DIR}/bin:$PATH"
-[[ ":$PATH:" != *":${ASDF_DIR}/shims:"* ]] && PATH="${ASDF_DIR}/shims:$PATH"
+# Add asdf to PATH
+#
+# if in $PATH, remove, regardless of if it is in the right place (at the front) or not.
+# replace all occurrences - ${parameter//pattern/string}
+ASDF_BIN="${ASDF_DIR}/bin:"
+ASDF_SHIMS="${ASDF_DIR}/shims:"
+[[ ":$PATH:" == *"${ASDF_BIN}"* ]] && PATH="${PATH//$ASDF_BIN/}"
+[[ ":$PATH:" == *"${ASDF_SHIMS}"* ]] && PATH="${PATH//$ASDF_SHIMS/}"
+# add to front of $PATH
+PATH="${ASDF_DIR}/bin:$PATH"
+PATH="${ASDF_DIR}/shims:$PATH"
 
 if [ -n "$ZSH_VERSION" ]; then
   autoload -U bashcompinit