Make variables local

functions/colors.zsh

@@ -35,11 +35,11 @@ function getColor() {
     fi
   else
     # named color added to parameter expansion print -P to test if the name exists in terminal
-    named="%K{$1}"
+    local named="%K{$1}"
     # https://misc.flogisoft.com/bash/tip_colors_and_formatting
-    default="$'\033'\[49m"
+    local default="$'\033'\[49m"
     # http://zsh.sourceforge.net/Doc/Release/Prompt-Expansion.html
-    quoted=$(printf "%q" $(print -P "$named"))
+    local quoted=$(printf "%q" $(print -P "$named"))
     if [[ $quoted = "$'\033'\[49m" && $1 != "black" ]]; then
         # color not found, so try to get the code
         1=$(getColorCode $1)

functions/utilities.zsh

@@ -39,6 +39,7 @@ printSizeHumanReadable() {
 
   # if the base is not Bytes
   if [[ -n $2 ]]; then
+    local idx
     for idx in "${extension[@]}"; do
       if [[ "$2" == "$idx" ]]; then
         break