trap and kill animation properly

files/fastdu

@@ -48,12 +48,13 @@ function siprefix() {
 }
 
 function animate() {
-  CHARS="|/-__-\\"
+  trap "trap - SIGTERM && kill -- -$$" EXIT SIGINT SIGTERM
+  CHARS=( "|  " "/  " " _ " "  \\" "  |" "  \\" " _ " "/  " )
   i=0
   while true; do
     sleep 0.2
-    printf "\r%s\r" ${CHARS:$i:1} >&2
+    printf "\r %s\r" "${CHARS[$i]}" >&2
-    i=$(( (i + 1)%${#CHARS} ))
+    i=$(( (i + 1)%${#CHARS[@]} ))
   done
 }